41st week of 2011 patent applcation highlights part 27 |
Patent application number | Title | Published |
20110249721 | VARIABLE LENGTH CODING OF CODED BLOCK PATTERN (CBP) IN VIDEO COMPRESSION - This disclosure describes techniques for coding video data. As one example, this disclosure describes a coded block pattern (CBP) for a coding unit (CU) of video data that indicates whether or not each of a luminance component (Y), a first chrominance component (U), and a second chrominance component (V) include at least one non-zero coefficient. According to another example, this disclosure describes a CBP that indicates whether respective blocks of a CU include at least on non-zero coefficient. The CBP described herein may be mapped to a single variable length code (VLC) code word. The VLC code word may be used by a coder to code the CU of video data. | 2011-10-13 |
20110249722 | METHOD AND DEVICE FOR SELECTING TRANSFORM MATRICES FOR DOWN-SAMPLING DCT IMAGE USING LEARNING WITH FORGETTING ALGORITHM - Down-sampling of an image may be performed in the DCT domain. A multiple layered network is used to select transform matrices for down-sampling a DCT image of size M×N to a DCT image of size I×J. A spatial domain down-sampling method is selected and applied to the DCT image to produce a down-sampled DCT reference image. A learning with forgetting algorithm is used to apply a decay to the elements of the transform matrix and select a transform matrices which solve an optimization problem. The optimization problem is a function of the visual quality of images obtained using the transform matrices and the computational complexity associated with using the transform matrices. The visual quality is a measure of the difference between the down-sampled DCT image obtained using the transform matrices and the visual quality of the DCT reference image obtained using a spatial domain down-sampling method. | 2011-10-13 |
20110249723 | Frame Buffer Compression and Memory Allocation in a Video Decoder - Frame buffer video compression on an input video stream to efficiently allocate and utilize memory used for storing reference frames in a video decoder includes parsing a video header to obtain a maximum number of reference frames (N), dividing an available frame buffer memory to hold [N+1] compressed frames, controlling a compression process to limit a size of each frame such that said size is not less than a frame buffer memory size divided by [N+1], parsing messages that contain reference frames by looking ahead in an input video stream buffer of the input video stream, and allocating memory for compressing a given reference frame based on a number of needed frames at a frame buffer. A quantization of the compression process may be adjusted to improve a picture quality of the input video stream. | 2011-10-13 |
20110249724 | DIRECTIONAL DISCRETE WAVELET TRANSFORM (DDWT) FOR VIDEO COMPRESSION APPLICATIONS - An apparatus and method for encoding video using directional discrete waveform transforms (DDWT), such as within a codec device. DDWT can be utilized to replace the use of intra transforms and inter transforms within the encoding system. In many ways the output of the DDWT can be compared with that provided using MDDT, however, it does not require a training process while it also provides enhanced encoding of feature edges with desirable visual characteristics. The transforms are applied in at least two passes, along the prediction direction, and then across the prediction direction, instead of being applied in fixed vertical and horizontal directions. Directional scaling is not required prior to the second stage of transforms. | 2011-10-13 |
20110249725 | OPTIMAL SEPARABLE ADAPTIVE LOOP FILTER - An adaptive loop filter utilizing separable filters within a quadtree-based adaptive loop filter (QALF). The filters for at least the P and B pictures are replaced with a separable filter to provide Separable QALF (SQALF). In a preferred embodiment the filter comprises a Wiener filter as a best fit approximation of the non-separable filter. In response to decoding with the SQALF approach, computational complexity in the decoder is reduced without lowering perceived visual quality. Estimation of the separable filter is obtained in the encoder by iteratively minimizing the sum of squares error with the separable filter. The SQALF filtering is described within a video decoder. | 2011-10-13 |
20110249726 | QP ADAPTIVE COEFFICIENTS SCANNING AND APPLICATION - Entropy encoding is performed in the inventive apparatus and method in response to the scanning of transform coefficients following an initial scanning pattern selected on the basis of probability statistics of non-zero coefficients for each block position. These non-zero probability statistics are ranked for a given combination of coding characteristics within the current block to arrive at an initial scanning pattern. The same initial scanning pattern selection is performed in the decoder to allow the transform coefficients to be extracted in their proper order from encoded video data. The pattern selection is applicable to both intra prediction and inter prediction. Transform coefficients are more accurately ordered in response to the invention because in adapting pattern initialization to quantization step size, high-frequency basis functions are properly taken into account. | 2011-10-13 |
20110249727 | ADAPTIVE QUANTIZATION BASED ON SPATIAL ACTIVITY HISTOGRAM - There is provided a method of adapting a Quantization parameter of digitally encoded video, comprising calculating spatial activity values of macroblocks in a picture of interest, creating a histogram of the spatial activity values, determining a change of quantization parameter value for a low activity category ΔQPLA from a skewness parameter of the histogram. There is also provided an apparatus for carrying out the method, and a computer readable product carrying instructions which when executed carry out the method. | 2011-10-13 |
20110249728 | ADAPTIVE QUANTIZATION BASED ON BIT RATIO - There is provided a method of adapting a Quantization parameter of digitally encoded video, comprising using a look-ahead encoding pass to provide look-ahead bit costs for each macroblock in a picture of interest, calculating an activity metric for each macroblock in the picture of interest, determining at least an accumulated look-ahead bit cost threshold for a low macroblock activity category, wherein the low macroblock activity category comprises macroblocks having an activity metric below a pre-determined level, sorting the macroblocks according to the calculated activity metrics of each macroblock to provide sorted macroblocks, adding sorted macroblocks to the low macroblock activity category in ascending activity order and accumulating bit costs of the added sorted macroblocks up to the determined accumulated look-ahead bit cost threshold, and applying a change in quantization parameter, Qp, to the macroblocks of the picture of interest comprising decreasing the Qp value of the macroblocks in the low macroblock activity category. | 2011-10-13 |
20110249729 | ERROR RESILIENT HIERARCHICAL LONG TERM REFERENCE FRAMES - Embodiments of the present invention provide a video encoding system that codes video sequence into a multi-level hierarchy based on levels of long term reference (LTR) frames. According to the present invention, an encoder designates a reference frame as a long term reference (LTR) frame and transmits the LTR frame to a receiver. Upon receiving feedback from the receiver acknowledging receipt of the LTR frame, the encoder periodically codes subsequent frames as reference frames using the acknowledged LTR frame as a reference and designates subsequent reference frames as secondary LTR frames. A determined number of frames after each secondary LTR frame may be coded using a preceding secondary LTR frame as a reference. | 2011-10-13 |
20110249730 | METHOD AND APPARATUS FOR GENERATING VIDEO PACKETS, METHOD AND APPARATUS FOR RESTORING VIDEO - A method and apparatus for generating video packets and a method and apparatus for restoring video are provided. The method of generating video packets includes: generating at least one pixel block consisting of at least one reference pixel and a plurality of neighboring pixels adjacent to the at least one reference pixel from pixels of a video frame; replacing pixel values of the neighboring pixels in the at least one pixel block with pixel difference values, which are difference values between a pixel value of one of pixels adjacent to the neighboring pixels and the pixel values of the neighboring pixels; generating packets so that a pixel value of the at least one reference pixel and the pixel difference values of the neighboring pixels are allocated to different packets according to positions of the pixels; and performing entropy coding of some of the packets including the pixel difference values of the neighboring pixels. | 2011-10-13 |
20110249731 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to one aspect of the present invention, a macroblock may be partitioned into two, or more, sets of blocks. The pixel values for a block within a first set of blocks may be predicted using reconstructed values from only neighboring macroblocks. The pixel values for a block within another set of blocks may be subsequently predicted using reconstructed values from blocks in previously reconstructed sets of blocks and/or reconstructed values from neighboring macroblocks. The pixel values for blocks within a set of blocks may be predicted in parallel. | 2011-10-13 |
20110249732 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to one aspect of the present invention, a macroblock may be partitioned into two, or more, sets of blocks. The pixel values for a block within a first set of blocks may be predicted using reconstructed values from only neighboring macroblocks. The pixel values for a block within another set of blocks may be subsequently predicted using reconstructed values from blocks in previously reconstructed sets of blocks and/or reconstructed values from neighboring macroblocks. The block residuals for the first set of blocks may be signaled, and the block residuals for subsequently predicted blocks may be signaled. The pixel values for blocks within a set of blocks may be predicted in parallel. | 2011-10-13 |
20110249733 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to one aspect of the present invention, a macroblock may be partitioned into two, or more, sets of blocks. According to a second aspect of the present invention, when a block is in a first set of blocks, a predicted intra-prediction mode for the block may be predicted based on the intra-prediction modes of available blocks within the first set and of blocks in available neighboring macroblocks. According to a third aspect of the present invention, when a block is in the first set of blocks, a predicted intra-prediction mode for the block may be predicted based on the intra-prediction modes of blocks in available neighboring macroblocks. | 2011-10-13 |
20110249734 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to one aspect of the present invention, a macroblock may be partitioned into two, or more, sets of blocks. According to another aspect of the present invention, the pixel values for a block within a first set of blocks may be predicted using reconstructed values from only neighboring macroblocks, wherein the reconstructed values may be weighted according to their distance from the block. | 2011-10-13 |
20110249735 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to one aspect of the present invention, a macroblock may be partitioned into two, or more, sets of blocks. The pixel values for a block within a first set of blocks may be predicted using reconstructed values from only neighboring macroblocks. The pixel values for a block within another set of blocks may be subsequently predicted using reconstructed values from blocks in previously reconstructed sets of blocks and/or reconstructed values from neighboring macroblocks. A reconstructed block used in the prediction may be above, below, to left of or to the right of the block being predicted. The pixel values for blocks within a set of blocks may be predicted in parallel. | 2011-10-13 |
20110249736 | Codeword restriction for high performance video coding - A system for encoding and/or decoding video that includes the use of restricted codewords. The use of restricted codewords permits a reduction in the bit-rate of the video bit stream without substantially impacting the resulting image quality. | 2011-10-13 |
20110249737 | MIXED TAP FILTERS - During the prediction stage of a video encoding and/or decoding process, a video coder can use relatively longer filters for certain motion vectors pointing to certain sub-pixel positions and relatively shorter filters for motion vectors pointing to other sub-pixel positions, where a longer filter generally refers to an interpolation filter with a greater number of filter coefficients, also called taps, while a shorter filter generally refers to an interpolation filter with fewer taps. | 2011-10-13 |
20110249738 | MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE DECODING APPARATUS, MOVING IMAGE ENCODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE ENCODING PROGRAM, MOVING IMAGE DECODING PROGRAM, AND MOVING IMAGE ENCODING/ DECODING SYSTEM - In order to improve the encoding efficiency while avoiding an increase in the size or memory band of a frame memory and having adaptability in the encoding/decoding processing of a moving picture, a bit length extension converter converts a target picture having a bit length N into an extended target picture having a bit length M, a compressor encodes the converted picture, and an expander restores the encoded picture. Then, a bit length reduction converter converts the picture into a reproduction picture having a bit length L smaller than the bit length M, and this reproduction picture is stored in a frame memory as a reference picture. | 2011-10-13 |
20110249739 | CONTEXT ADAPTIVE DIRECTIONAL INTRA PREDICTION - Enhanced directional prediction apparatus and methods are taught which are based on edge-based adaptive directional estimation, for providing an improved prediction direction for intra prediction within a coding device. Image gradient vectors are obtained for pixels in the neighborhood of the current block, and edge directions determined. Candidate edge directions are processed to derive a dominant edge direction in response to defining an objective function as a summation of projections to a candidate direction and computing suggested direction of each neighboring pixel. The dominant edge direction may be utilized for the prediction direction, such as in response to a detection mode flag signaled to the decoder, or modified by an angular adjustment, which can be communicated to a decoder. | 2011-10-13 |
20110249740 | MOVING IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THE SAME, AND COMPUTER READABLE STORAGE MEDIUM - A moving image encoding apparatus for dividing an image into image blocks and performing intra-prediction encoding of a target image block using pixel values of an image block adjacent to the target image block, comprises a prediction unit for performing intra-prediction in accordance with one of intra-prediction modes corresponding to divided block sizes and outputting intra-predicted image data for the target image block, a determination unit for, when the target image block is a low frequency band image, determining by detecting a change in the pixel value in the image block whether the target image block includes a gradation image, and a decision unit for, when it is determined that the target image block includes the gradation image, deciding a block size of the intra-prediction so as to cause the prediction unit to preferentially select a minimum block size of the divided block sizes. | 2011-10-13 |
20110249741 | Methods and Systems for Intra Prediction - Aspects of the present invention relate to systems and methods for intra prediction. According to a first aspect of the present invention, a pixel value, in a first block of a macroblock, may be predicted according to a first-direction intra-prediction mode when a flag has a first value and may be predicted according to a second-direction intra-prediction mode when the flag has a second value, wherein the first-direction intra-prediction mode and the second-direction intra-prediction mode are associated with opposite prediction directions. | 2011-10-13 |
20110249742 | COUPLED VIDEO PRE-PROCESSOR AND CODEC INCLUDING REFERENCE PICTURE FILTER THAT MINIMIZES CODING EXPENSE DURING PRE-PROCESSING MODE TRANSITIONS - A video coding system includes a coding engine operable to code source video according to motion compensated prediction techniques, a reference picture cache to store decoded picture data of previously-coded reference pictures, and a programmable filter to apply selected filtering operation(s) to picture data retrieved from the reference picture cache and provided to the coding engine. A video decoding system includes a decoding engine operable to decode coded video data, a reference picture cache to store decoded picture data of previously-decoded reference pictures, and a programmable filter to apply a filtering operation to picture data retrieved from the reference picture cache and provided to the decoding engine as determined by the coded video data. Video coding/decoding systems so configured may avoid coding costs that can be incurred when a pre-processing filter switches pre-processing modes within source data in a manner that causes divergence between stored reference pictures and video pictures input to the coding engine. | 2011-10-13 |
20110249743 | Super-block for high performance video coding - A system for encoding and/or decoding video that includes the use of super blocks. The use of super blocks permits a reduction in the bit-rate of the video bit stream. | 2011-10-13 |
20110249744 | Method and System for Video Processing Utilizing N Scalar Cores and a Single Vector Core - A multimedia processor may comprise a first scalar core, a second scalar core, and a vector core integrated on a single substrate of said multimedia processor. The multimedia processor may receive data and instructions associated with image processing. The multimedia processor may configure the received data and instructions into data and instructions associated with a first image processing program and into data and instructions associated with a second image processing program independent of the first image processing program. The first image processing program may be configured to be handled by the first scalar core and the vector core, while the data and instructions associated with the second image processing program may be configured to be handled by the second scalar core and the vector core. The vector core may communicate data to and from register files in each of the first and second scalar cores. | 2011-10-13 |
20110249745 | BLOCK AND PARTITION SIGNALING TECHNIQUES FOR VIDEO CODING - A video block syntax element indicates whether all of the partitions of a video block are predicted based on a same reference list and no greater than quarter-pixel accuracy is used. If the video block syntax element is set, partition-level signaling of the reference lists is avoided. If the video block syntax element is not set, partition-level signaling of the reference lists occurs. If the video block syntax element is set, partition-level syntax elements may be used for each of the partitions of the video block, wherein the partition-level syntax elements each identify one of the reference lists and motion vector accuracy for a given one of the partitions. | 2011-10-13 |
20110249746 | METHOD FOR BROWSING VIDEO STREAMS - Video equipment, e.g. for TV producers studios, need to display multiple channels of bit-streams simultaneously. Decoding multiple streams of high bit-rate videos is extremely computational intensive. An improved method for browsing an encoded frequency domain video sequence comprises steps of determining a spatial and/or temporal reduction level for browsing a video sequence, determining according to the determined reduction level frames, fields or parts of blocks or macroblocks to be skipped for decoding, and decoding the remaining data to a video with lower spatial and/or temporal resolution. The reduction may include adaptive partial coefficient decoding, motion vector truncation and/or simplified deblocking filtering. The reduction of spatial resolution is advantageously performed in the frequency domain, so that the inverse quantization process and the iDCT processes require less computing. | 2011-10-13 |
20110249747 | MOTION VECTOR DECISION APPARATUS, MOTION VECTOR DECISION METHOD AND COMPUTER READABLE STORAGE MEDIUM - A motion vector decision apparatus used in a moving image encoding apparatus for performing inter-prediction encoding of an encoding target image using a reference image and a motion vector, which decides the motion vector based on a cost calculated using a first weight coefficient as a weight coefficient when a block image included in an encoding target image includes no repetitive pattern, and decides the motion vector based on a cost calculated using a second weight coefficient larger than the first weight coefficient as the weight coefficient when the block image includes the repetitive pattern. | 2011-10-13 |
20110249748 | METHODS AND DEVICES FOR INCORPORATING DEBLOCKING INTO ENCODED VIDEO - Encoders and methods of encoding that incorporate deblocking into the encoding process. An encoder performs a two-cycle encoding process. First, an original block is processed and then reconstructed and deblocked. The reconstruction and the deblocked reconstruction are compared to the original and an intermediate block is created that contains the portions of the reconstruction or the deblocked reconstruction that are more similar to the original. In the second cycle, the intermediate block serves to generate a modified original block, which is then used in a prediction process to create a new prediction block. The new prediction block as compared to the original gives new residuals. The new prediction and new residuals are entropy coded to generate the encoded video data. The new prediction block and new residuals incorporate the deblocking elements selectively identified during the first cycle, thereby eliminating the need for deblocking at the decoder. The prediction operation may be motion prediction or spatial prediction. | 2011-10-13 |
20110249749 | Moving Picture Decoding Method and Moving Picture Encoding Method - High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image. | 2011-10-13 |
20110249750 | IMAGING DEVICE - An imaging device includes: a frame rate conversion unit synthesizing images captured at a second frame rate higher than a first frame rate to convert the images into a synthesized image having the first frame rate; a motion estimation unit performing a motion estimation between consecutive frames of the images captured at the second frame rate; a motion vector synthesis unit synthesizing motion vectors having the second frame rate obtained as a result of the motion estimation, so as to generate a synthesized motion vector of a target macroblock in the synthesized image; a motion blur amount determination unit which counts, in an area surrounding the target macroblock, the number of macroblocks having the same synthesized motion vector as that of the target macroblock and compares a value derived from the number of counted macroblocks with a threshold value, the counting and the comparison being performed for each target macroblock; and a motion vector selection unit selecting the synthesized motion vector when the value derived from the number of counted macroblocks is determined, as a result of the comparison, to exceed the threshold value. | 2011-10-13 |
20110249751 | PREDICTION OF IMAGES BY REPARTITIONING OF A PORTION OF REFERENCE CAUSAL ZONE, CODING AND DECODING USING SUCH A PREDICTION - A method is provided for decoding a data stream representative of an image or of a sequence of images, the stream comprising data representative of at least one portion of one of the images, the method implementing a step of predicting a motion vector of a partition of a current image portion, with respect to a reference causal zone which has been partitioned according to a mode of coding determined for the zone. The prediction step comprises, in relation to said current partition: partitioning anew at least one portion of the reference causal zone into a plurality of reference partitions, determining motion vectors respectively associated with reference partitions obtained subsequent to the new partitioning, determining a predictor motion vector on the basis of said determined motion vectors, and predicting the motion vector of said current partition on the basis of said determined predictor motion vector. | 2011-10-13 |
20110249752 | METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FO DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts. | 2011-10-13 |
20110249753 | METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FO DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts. | 2011-10-13 |
20110249754 | VARIABLE LENGTH CODING OF CODED BLOCK PATTERN (CBP) IN VIDEO COMPRESSION - In one example, this disclosure describes method of coding video data. The method comprises coding a block of video data as one or more luminance blocks of transform coefficients and one or more chrominance blocks of transform coefficients, and coding a coded block pattern (CBP) for the block of video data. The CBP comprises syntax information that identifies whether non-zero data is included in each of the luminance blocks and each of the chrominance blocks. Coding the CBP includes selecting one or more variable length coding (VLC) tables based on a transform size used in performing one or more transforms on the one or more luminance blocks. | 2011-10-13 |
20110249755 | MOVING IMAGE CODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE CODING APPARATUS, MOVING IMAGE DECODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - The coding method includes: transforming pixel values of an image into a two-dimensional matrix including N coefficients in a frequency domain; quantizing the N coefficients to generate N quantized coefficients; generating a one-dimensional sequence based on the two-dimensional matrix and tree structure information that defines a binary tree; and coding the one-dimensional sequence and at least some of the N quantized coefficients. The generating includes: determining, based on the two-dimensional matrix, a reference destination information item indicating positions of the N quantized coefficients in the two-dimensional matrix to be referenced to by the N leaf nodes, respectively (S | 2011-10-13 |
20110249756 | Skin Tone and Feature Detection for Video Conferencing Compression - In many videoconferencing applications, bandwidth is at a premium, and thus, it is important to encode a given video frame intelligently. It is often desirable that a larger amount of information be spent encoding the more important parts of the video frame, e.g., human facial features, whereas the less important parts of the video frame can be compressed at higher rates. Thus, there is need for an apparatus, computer readable medium, processor, and method for intelligent skin tone and facial feature aware videoconferencing compression that can “suggest” intelligent macroblock compression ratios to a video encoder. The suggestion of compression rates can be based at least in part on a determination of which macroblocks in a given video frame are likely to contain skin tones, likely to contain features (e.g., edges), likely to contain features in or near skin tone regions, or likely to contain neither skin tones nor features. | 2011-10-13 |
20110249757 | METHOD AND DEVICE FOR OVERLAYING 3D GRAPHICS OVER 3D VIDEO - A method of decoding and outputting video information suitable for three-dimensional [3D] display, the video information comprising encoded main video information suitable for displaying on a 2D display and encoded additional video information for enabling three-dimensional [3D] display, the method comprising: receiving or generating three-dimensional [3D] overlay information to be overlayed over the video information; buffering a first part of the overlay information to be overlayed over the main video information in a first buffer; buffering a second part of overlay information to be overlayed over the additional video information in a second buffer; decoding the main video information and the additional video information and generating as a series of time interleaved video frames, each outputted video frame being either main video frame or additional video frame; determining a type of an video frame to be outputted being either a main video frame or an additional video frame; overlaying either first or second part of the overlay information on an video frame to be outputted in agreement with the determined type of frame outputting the video frames and the overlayed information. | 2011-10-13 |
20110249758 | GENERATING AN OUTPUT SIGNAL BY SEND EFFECT PROCESSING - An output signal is generated from an input signal by applying a send effect processing to the input signal. The input signal comprises a weighted sum of component signals. Dependencies between the weighted component signals are represented by parameters. In accordance with the present invention, the output signal is generated in dependence of the parameters to compensate for an unequal weighting of component signals comprised in the input signal. Due to this compensation the strength of the send effect corresponding to the separate component signals is (nearly) proportional to the strength of each of the component signals, which results in more realistic surround experience. | 2011-10-13 |
20110249759 | MULTI-WIDEBAND COMMUNICATIONS OVER POWER LINES - Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz. | 2011-10-13 |
20110249760 | ANTENNA SELECTION BASED ON MEASUREMENTS IN A WIRELESS DEVICE - Techniques for supporting a plurality of radios on a wireless device with a limited number of antennas are described. In one design, at least one radio may be selected from among the plurality of radios on the wireless device. Measurements for a plurality of antennas may be obtained. In one design, the measurements may be for pair-wise isolation for different pairs of antennas and/or joint isolation for different sets of at least three antennas. The isolation measurements may be used to determine correlation between antennas. The measurements may be obtained a priori and stored, or periodically, or when triggered by an event. At least one antenna may be selected for the at least one radio from among the plurality of antennas based on the measurements. The at least one radio may be connected to the at least one antenna. | 2011-10-13 |
20110249761 | BROADBAND WIRELESS SYSTEM - Disclosed is a broadband wireless system which has a high bit resolution and a wide operating range, enables measurement and use of signal specifications such as an arrival time, strength, frequency, pulse width, modulation type of a signal, has a simple configuration with high reliability, and enables easy use of the processed signal. The broadband wireless system includes an antenna receiving the broadband wireless signal; a reception unit receiving and processing the broadband wireless signal from the antenna and converting the broadband wireless signal into a first intermediate frequency signal; a signal distribution unit converting the first intermediate frequency signal into second intermediate frequency signals which are equal to one another; a parallel amplification unit generating third intermediate frequency signals which are obtained by amplifying the individual second intermediate frequency signals provided from the signal distribution unit with different amplification rates; a parallel analog-to-digital conversion unit performing analog-to-digital conversion of the individual third intermediate frequency signals from the parallel amplification unit and generating discrete intermediate frequency signals; and an execution system selecting any one of the individual discrete intermediate frequency signals by analyzing the individual discrete intermediate frequency signals of the discrete intermediate frequency signal from the analog-to-digital conversion unit and processing the selected individual discrete intermediate frequency signal. | 2011-10-13 |
20110249762 | MULTIPLE-ANTENNA SIGNAL PROCESSING SYSTEM AND METHOD - A multiple-antenna signal processing system and method are provided. The system includes: a Discrete Fourier Transform DFT processing unit, a multiple-antenna processing and resource element mapping unit, and an Inverse Fast Fourier Transform IFFT processing unit, the system also includes a pre-mapping processing unit, which is configured to perform a mapping on input data stream(s) based on a processing mode of a current multiple-antenna processing, so as to realize the pre-mapping processing, and outputs the pre-mapped data stream(s) to the DFT processing unit. | 2011-10-13 |
20110249763 | DUAL INDICATOR SCHEME FOR CHANNEL STATE INFORMATION FEEDBACK - Codebook based communication of precoding data between two stations involves determining a ‘best fit’ precoding at a receiving station, on the basis of channel state measurements taken therein. The best fit precoding is compared with pre-agreed entries in a codebook, and an indicator is sent back to the terminal emitting the analysed signal. The determination is separated into two elements, one being sufficient for use with SU-MIMO, and another being provided, with a second codebook indicator, if MU-MIMO is to be employed. This second codebook indicator points to a codebook of eigenvector representations for the multi-user space in which the channel is persisting. | 2011-10-13 |
20110249764 | RADIO PARAMETER GROUP GENERATING APPARATUS, TRANSMITTER AND RECEIVER - An apparatus for generating sets of radio parameters includes a first deriving unit deriving a set of radio parameters for specifying a symbol including an effective symbol part with the same period as the effective symbol part specified by another set of radio parameters and a guard interval part with a different period from the guard interval part specified by the other set of radio parameters. The apparatus further includes a second deriving unit deriving a set of radio parameters so that an occupancy proportion of the guard interval part in a single symbol specified by another set of radio parameters is equal to an occupancy proportion of the guard interval part in a single symbol specified by the other set of radio parameters. | 2011-10-13 |
20110249765 | PORTABLE TERMINAL AND METHOD FOR OPERATING OF MIMO ANTENNA THEREOF - A portable terminal and a method operate multiple input multiple output (MIMO) antennas. Received signal strength indications (RSSIs) of the MIMO antennas are measured through a wireless communication unit that transmits and receives a wireless signal using the MIMO antennas. A path between a MIMO antenna with a greatest RSSI and a broadcast receiving unit is connected during a broadcast mode. | 2011-10-13 |
20110249766 | METHOD FOR FRAME AGGREGATION IN MOBILE COMMUNICATION SYSTEM - A staggered frame aggregating method for multi-band time-division duplex mobile communication system. By relatively shifting the frame in each frequency band in turn, a new frame configuration is formed by aggregating and it is used for transmitting and receiving data, and it makes the frames in different bands stagger in time. | 2011-10-13 |
20110249767 | METHOD AND APPARATUS FOR REFERENCE SIGNAL SEQUENCE MAPPING IN WIRELESS COMMUNICATION - A wireless communication method implemented in a multi-user, multi-input multi-output MU-MIMO system is disclosed which includes forming one or more antenna port sets, wherein an antenna port set comprises two or more antenna ports and allocating transmission resources to a user equipment reference signal UE-RS, the allocating being based at least in part on an antenna port set index. | 2011-10-13 |
20110249768 | PEAK SUPPRESSION DEVICE AND PEAK SUPPRESSION METHOD - A peak suppression device includes: a peak determination unit which determines a peak value of a waveform of an input signal; an impulse signal generation unit which generates an impulse signal corresponding to a difference between the peak value and a predetermined value if an absolute value of the peak value is greater than the predetermined value; a multiplication unit which multiplies the generated impulse signal by a predetermined impulse response waveform so as to generate a peak suppression signal; and a subtraction unit which subtracts the peak suppression signal from the input signal. | 2011-10-13 |
20110249769 | METHOD AND APPARATUS OF COMPENSATION FOR AMPLITUDE AND PHASE DELAY USING SUB-BAND POLYPHASE FILTER BANK IN BROADBAND WIRELESS COMMUNICATION SYSTEM - Provided is a method and apparatus improving a deterioration of a gain flatness and a phase characteristic that may be incurred while a baseband signal is transformed into a immediate frequency (IF) signal and a radio frequency (RF) signal in a broadband wireless communication system. A sub-band extractor may divide the broadband signal into multiple sub-band signals, may pre-compensate for a gain and a phase delay of each sub-band signals in the baseband, and may combine the pre-compensated sub-band signals into the single broadband signal and thus, the deterioration of the gain flatness and a phase delay flatness that may be incurred while the broadband signal is transformed into the IF signal and the RF to signal, may be improved. | 2011-10-13 |
20110249770 | PASSIVE TRANSMITTER ARCHITECTURE WITH SWITCHABLE OUTPUTS FOR WIRELESS APPLICATIONS - A transmitter architecture having a single signal path or hardware to cover WCDMA/EDGE/GSM applications, and requires no SAW at the transmitter outputs. The transmitter architecture allows for a transmit convergence feature. A passive mixer with unique driver and furthermore using native devices available from the CMOS process for the mixer cores enables low voltage and low power design, low output noise and high linearity. A digital variable gain amplifier has the capability to cover wide output dynamic range operated from low supply voltage and interfaced digitally with the baseband circuit without DAC. A single transformer is used to combine the outputs from the WCDMA/EDGE and GSM drivers and subsequently convert the differential signal paths into a single-ended signal. RF switches are used to divert the output from the transformer to different bands and applications. | 2011-10-13 |
20110249771 | ADAPTIVE GAIN CONTROL BASED ON ECHO CANCELLER PERFORMANCE INFORMATION - A system and method for provide a stable gain from an adaptive gain control device in a signal path. An echo canceller is also located in the signal path, and is used to provide performance information regarding losses in the signal. This performance information is fed to the automatic gain control device via a connection. The automatic gain control device thereafter uses the performance information to determine a maximum gain that might be provided based upon losses cause by echo conditions. The gain however is limited in order to provide for a stable system. The performance information includes a loss rate that includes a combination of the echo return loss and the echo return loss enhancement. | 2011-10-13 |
20110249772 | TRANSMITTER, MULTICARRIER TRANSMITTING METHOD, AND RECEIVER - A transmitter modulates for each symbol period a plurality of carriers that include a carrier group that is consisted of a plurality of prescribed carriers, and repeatedly transmits control information in cycles by using the carrier group. The transmitter transmits multiple-bit binary data of the control information in each symbol period, thereby transmitting the control information once in each of the cycles that includes at least one symbol period. The transmitter controls the transmission unit to switch, within the carrier group, for each of the cycles, carriers of bits of the control information, according to a prescribed rule. | 2011-10-13 |
20110249773 | APPARATUS AND METHOD FOR ESTIMATING CHANNEL IN WIRELESS COMMUNICATION SYSTEM - An apparatus method of estimating a channel in a wireless communication system are provided. The method includes determining channel estimation values of pilot tones, selecting data tones to which a first estimation scheme is applied, according to frequency selectivity and time-axis variance of the channel, determining channel estimation values of the selected data tones according to the first estimation scheme by using the channel estimation values of the pilot tones, and determining channel estimation values of the remaining data tones according to a second estimation scheme by using the channel estimation values of the pilot tones and the channel estimation values determined by the first estimation scheme. | 2011-10-13 |
20110249774 | Partial Response Equalizer and Related Method - A multi-phase partial response receiver supports various incoming data rates by sampling PrDFE output values at a selected one of at least two clock phases. The receiver includes a calibration circuit that performs a timing analysis of critical data paths in the circuit, and this analysis is then used to select the particular clock phase used to latch the output values. These techniques permit the multiplexer outputs from for each phase of the partial response receiver to directly drive selection of a multiplexer for the ensuing phase, i.e., by avoiding regions of instability or uncertainty in the respective multiplexer outputs. | 2011-10-13 |
20110249775 | DATA RECEIVER CIRCUIT - A data receiver circuit for converting received serial data into parallel data in accordance with a data rate signal and for outputting the converted parallel data, the data receiver circuit includes a clock generator for generating a reference clock based on an input clock, a data latch for latching the received serial data and outputting first latched serial data in accordance with the reference clock, a first data output section for converting the first latched serial data into first parallel data with a first reference clock, in case that the data rate signal indicates a first data rate same as a data rate of the reference clock, and a second data output section for converting the first latched serial data into second parallel data with a second reference clock, in case that the data rate signal indicates a second data rate slower than the data rate of the reference clock. | 2011-10-13 |
20110249776 | METHOD FOR DETERMINING AS TO WHETHER A RECEIVED SIGNAL INCLUDES A DATA SIGNAL - A method of determining as to whether a received signal includes a data signal is provided. The method provided includes determining a first value based on a cyclic auto-correlation of the received signal and determining a second value based on the cyclic auto-correlation of the received signal. The method provided further includes determining as to whether a received signal includes a data signal based on a comparison of the first value and the second value. | 2011-10-13 |
20110249777 | FRAME SYNCHRONIZATION APPARATUS AND METHOD BASED ON DIFFERENTIAL CORRELATION IN COMMUNICATION SYSTEM - A frame synchronization apparatus and method based on differential correlation in a communication system are provided. A correlation analysis is performed by using sync word in a prior search window and a posterior search window for obtaining a plurality of prior-window correlation values and a plurality of posterior-window correlation values, respectively. N maximum correlation values in the correlation values are selected, wherein indexes of the maximum correlation values are I | 2011-10-13 |
20110249778 | METHOD AND APPARATUS FOR PACKET DETECTION VIA CROSS-CORRELATION IN THE PRESENCE OF FREQUENCY OFFSET - An apparatus and method for packet detection using cross-correlation in the presence of frequency offset. The method comprises: segmenting a received signal; and cross-correlating each segment with an expected signal. The apparatus comprises a slicer that segments a received signal; and a cross correlator that cross-correlates each segment with an expected signal. | 2011-10-13 |
20110249779 | NOISE VARIANCE ESTIMATION FOR DIVERSITY RECEPTION - A first noise variance is determined for a signal received on a first diversity branch of a receiver, and a second noise variance is determined for a signal received on a second diversity branch of the receiver. The signal received on the second diversity branch is scaled as a function of a ratio of the first noise variance and the second noise variance. A received signal is then estimated by combining the signal on the first diversity branch with the scaled signal on the second diversity branch. In this manner reasonable complexity is used to process diversity signals that exploits the difference in noise variation at the different receive diversity branches, without requiring matrix inversion and without having to assume the same noise variation across the diversity receive branches. Methods, apparatuses and computer programs are detailed operable in HSDPA and other systems. | 2011-10-13 |
20110249780 | OFDM Frame Synchronisation Method and System - An OFDM frame synchronisation method in which the symbols of the preamble carry a code. The detection of the code allows the frame synchronization in presence of low SNR. | 2011-10-13 |
20110249781 | DEVICE FOR RECONSTRUCTING THE CLOCK OF AN NRZ SIGNAL, AND ASSOCIATED TRANSMISSION SYSTEM - The invention relates according to a first aspect to a device ( | 2011-10-13 |
20110249782 | CLOCK RECOVERY - A clock and data recovery circuit injects a noise waveform into the control loop to offset the data sampling point artificially in order to induce errors. The amplitude of the injected waveform can be varied to ascertain the effect on the bit error rate (BER) so as to be able to evaluate the temporal noise margin. | 2011-10-13 |
20110249783 | METHOD FOR PRODUCING ENERGY AND APPARATUS THEREFOR - A method for producing energy from nuclear reactions between hydrogen and a metal, includes a) production of a determined quantity of micro/nanometric clusters of a transition metal, b) bringing hydrogen into contact with the clusters and controlling its pressure and speed; c) creating an active core for the reactions by heating the clusters up to a temperature that is higher than the Debye temperature T | 2011-10-13 |
20110249784 | DRIVING SYSTEM OF RELIEF SAFETY VALVE - In one embodiment a relief safety valve driving system that supplies a driving gas by use of a relief safety valve driving unit and thereby opens a relief safety valve provided in a main steam system of a nuclear power plant if an accident or a transient state occurs, for protecting a reactor against pressurization, wherein the relief safety valve driving unit opens the relief safety valve by supplying the driving gas to the relief safety valve by one or more auto-depressurization system actuating signals, among auto-depressurization system actuating signals respectively belonging to three safety segments, or by a relief valve functions actuating signal, and closes the relief safety valve without supplying the driving gas thereto when none of the auto-depressurization system actuating signals and the relief valve functions actuating signal is generated. | 2011-10-13 |
20110249785 | EXPOSURE BOOST ZONE FOR BOILING WATER REACTOR NUCLEAR BUNDLES - Disclosed are a fuel rod and a fuel bundle using the fuel rod. The fuel rod may include first enriched uranium in a boost zone of the fuel rod, wherein the boost zone may be arranged directly at a bottom of the fuel rod. The fuel rod may also include second enriched uranium in a second zone of the fuel rod, wherein the second zone is arranged over the boost zone. The fuel rod may also include natural uranium in a third zone of the fuel rod, wherein the third zone is arranged over the second zone. In this fuel rod, a percent of enrichment of the enriched uranium in the boost zone is at least one percent. | 2011-10-13 |
20110249786 | DIVIDER CIRCUIT - A divider circuit includes a shift register which generates 2X (X is a natural number greater than or equal to 2) pulse signals in accordance with a first clock signal or a second clock signal and outputs them, and a divided signal output circuit which generates a signal to be a third clock signal with a cycle X times longer than a cycle of the first clock signal in accordance with the 2X pulse signals and outputs it. The divided signal output circuit includes X first transistors which control whether voltage of the signal to be the third clock signal is set to first voltage; and X second transistors which control whether voltage of the signal to be the third clock signal is set to second voltage. | 2011-10-13 |
20110249787 | FILTER CHANGING ASSEMBLY FOR FILTERING A RADIATION BEAM - A filter changing assembly that can be used in, for example, a radiology system includes shape filters that can used to shape a radiation beam and that can be moved back-and-forth, for example. The filter changing assembly also includes beam hardening filters that can be used to change the energy spectrum of the radiation beam, and that also can be moved back-and-forth, for example. The filter changing assembly includes a control system that can be used to select at least one of the filters and automatically move the selected filter from one position to another position. | 2011-10-13 |
20110249788 | SYSTEM AND METHOD FOR DETERMINING THE COMPOSITION OF AN OBJECT - The present invention discloses a method for identifying the elemental composition of an object ( | 2011-10-13 |
20110249789 | System for Circulatory Blood Flow Travel Time Determination - An X-ray imaging system automatically calculates blood flow travel time by using an X-ray image acquisition system to initiate acquisition of images at a second anatomical site synchronized with introduction of contrast agent into a patient vessel at a first anatomical site. A detector automatically compares images, acquired at the second anatomical site in response to the introduction of contrast agent, with images of the second anatomical site acquired in the absence of a contrast agent, to detect when contrast agent reaches the second anatomical site via blood flow in a circulatory system of the patient. A calculator automatically calculates a blood flow travel time duration between the first and second anatomical sites based on the time elapsed between time of the introduction of contrast agent and a time the contrast agent reaches the second anatomical site in response to the detection. An output processor automatically generates a message indicating the calculated blood flow travel time. | 2011-10-13 |
20110249790 | METHOD FOR PROCESSING RADIOLOGICAL IMAGES - A method for processing radiological images is provided. The method includes extracting at least two image portions from at least two radiological images of an area to be treated. The method also includes defining an area in a final image for each extracted image portion. The method further includes laying out the extracted image portions in the final image so that each area of the final image comprises an extracted image portion. | 2011-10-13 |
20110249791 | EXPOSURE CONTROL USING DIGITAL RADIOGRAPHY DETECTOR - A method for sensing a level of ionizing radiation directed from a radiation source through a subject and toward a digital radiography detector, executed at least in part by a logic processor, obtains image data that relates the position of the subject to the digital radiography detector and assigns one or more radiant-energy sensing elements of the digital radiography detector as one or more exposure control sensing elements. The one or more exposure control sensing elements are sampled one or more times during exposure to measure the exposure directed to the subject. A signal is provided to terminate exposure according to exposure measurements obtained from the one or more exposure control sensing elements within the digital radiography detector. | 2011-10-13 |
20110249792 | CONFIGURABLE AEC SENSOR FOR AN X-RAY SYSTEM - A method for sensing a level of ionizing radiation directed from a radiation source through a subject and toward an imaging detector, the method executed at least in part by a logic processor, obtains positional coordinate data that is indicative of at least a portion of the subject to be exposed to radiation and that defines a radiation measurement area relative to the subject. The method assigns one or more sensing elements to sense radiation within the radiation measurement area. A measurement signal is acquired from each of one or more assigned sensing elements. | 2011-10-13 |
20110249793 | TUBE ALIGNMENT FOR MOBILE RADIOGRAPHY SYSTEM - A radiography system for obtaining a radiographic image of a subject has a radiation source energizable to direct radiant energy along a radiation path and an imaging receiver sensitive to the radiant energy for forming the radiographic image. A sensor apparatus is disposed to provide one or more output signals that are indicative at least of centering of the radiation path with respect to the receiver, of an angle of the receiver relative to the radiation path, and of a source-to-image distance along the radiation path. A display apparatus generates, in response to the one or more output signals, a display that indicates the centering of the radiation path with respect to the receiver and that provides one or more values indicative of at least the source-to-image distance and the angle of the receiver relative to the radiation path. | 2011-10-13 |
20110249794 | AUTOMATIC ROAD MAPPING FOR HEART VALVE REPLACEMENT - The present invention relates to a method for automatic road mapping for heart valve replacement and an examination apparatus for automatic road mapping for heart valve replacement. In order to provide the cardiologist or surgeon with better information during PHV implantation, an examination apparatus for automatic roadmapping for heart valve replacement is provided, that comprises at least one X-ray image acquisition device ( | 2011-10-13 |
20110249795 | X-RAY INSPECTION METHOD AND X-RAY INSPECTION APPARATUS - An X-ray inspection apparatus includes an X-ray source, an X-ray detector, an image acquisition control mechanism for controlling acquisition of image data from the X-ray detector, an inspection object drive mechanism for moving an inspection object, an X-ray source control mechanism, and an operation unit. The X-ray source control mechanism causes the X-ray source to output X-rays from focal point positions aligned in the X direction, based on an instruction from the operation unit. The inspection object is divided into a plurality of partial areas. The image acquisition control mechanism acquires a partial image which is an image of an X-ray output from each focal point position and transmitted through each partial area. When acquisition of partial images for all the focal point positions is finished, the inspection object drive mechanism moves the inspection object in the Y direction based on an instruction from the operation unit. | 2011-10-13 |
20110249796 | MULTI X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREFOR - An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector. | 2011-10-13 |
20110249797 | RADIATION TREATMENT SYSTEM - A radiation treatment system that can apply radiation to a respiratory moving organ (such as, a lung, a liver or the like) with high precision is provided. A radiation treatment system according to the present invention as solving means is characterized in that when medical treatment target position information obtained by executing pattern matching processing on the inside of each frame of a fluoroscopic X-ray image for detecting a medical treatment target position achieved under medical treatment on the basis of a template image of an area containing a medical treatment target position of a patient, which is achieved in advance, is within a predetermined error range with respect to the medical treatment target position information based on the template image, and also a timing is an application timing of medical treatment radiation which is set on the basis of motion information of a body surface, a signal for applying medical treatment radiation is generated; and in the other cases, a signal for stopping the application is generated, whereby the application of the medical treatment radiation is controlled on the basis of these signals. | 2011-10-13 |
20110249798 | Scatter Attenuation Tomography using a Monochromatic Radiation Source - A system and methods for characterizing an inspected object on the basis of attenuation between identified regions of scattering and a plurality of detectors. An incident beam of substantially monochromatic penetrating radiation is generated by a source, which may be a radioactive source. The incident beam is characterized by a propagation axis and a source energy. Radiation scattered by the object is detected by means of a plurality of detector elements disposed about the beam of penetrating radiation, each detector element generating a detector signal characterizing a detected energy of scattered radiation. The detector signal provides for determining a displacement for each scattering point of the object relative to a fiducial position on the propagation axis of the incident beam, based upon the detected energy of the scattered radiation. By calculating the attenuation of penetrating radiation between pairs of scattering voxels, a tomographic image is obtained characterizing the three-dimensional distribution of attenuation in the object of one or more energies of penetrating radiation, and thus of material characteristics. | 2011-10-13 |
20110249799 | DISPLAY OF AEC SENSOR LOCATION - A method for indicating a position of a radiation energy sensor element in a radiographic imaging system, the method executed at least in part by a computer, identifies the position of the radiation energy sensor element relative to a subject to be imaged and displays the identified position relative to the subject. | 2011-10-13 |
20110249800 | BATTERY-TYPE X-RAY IMAGING APPARATUS - The present invention relates to an X-ray imaging apparatus, and more particularly, to an X-ray imaging apparatus in which a condenser is charged with low battery voltage, and the charged voltage of the condenser, or the sum voltage of the output voltage of the battery serially connected to the condenser and the charged voltage of the condenser is used as X-ray generating power. The X-ray imaging apparatus according to the present invention is configured such that the battery power and the condenser power are serially connected to provide power for operating the X-ray imaging apparatus, thus generating power for operating the X-ray imaging apparatus from the low battery power, and obtaining a lightweight and less bulky X-ray imaging apparatus. Further, the X-ray imaging apparatus according to the present invention senses the charged voltage of the condenser unit, and cuts off power being applied to the condenser charging unit from the battery when it is determined that the charging of the condenser unit is completed, thus reducing the power consumption of the battery. | 2011-10-13 |
20110249801 | Gamma Ray Generator - An embodiment of a gamma ray generator includes a neutron generator and a moderator. The moderator is coupled to the neutron generator. The moderator includes a neutron capture material. In operation, the neutron generator produces neutrons and the neutron capture material captures at least some of the neutrons to produces gamma rays. An application of the gamma ray generator is as a source of gamma rays for calibration of gamma ray detectors. | 2011-10-13 |
20110249802 | MULTI X-RAY GENERATING APPARATUS AND X-RAY IMAGING APPARATUS - A multi X-ray generating apparatus which has a plurality of electron sources arranged two-dimensionally and targets arranged at positions opposite to the electron sources includes a multi electron source which includes a plurality of electron sources and outputs electrons from driven electron sources by selectively driving a plurality of electron sources in accordance with supplied driving signals, and a target unit which includes a plurality of targets which generate X-rays in accordance with irradiation of electrons output from the multi electron source and outputs X-rays with different radiation qualities in accordance with the generation locations of X-rays. The generation locations and radiation qualities of X-rays from the target unit are controlled by selectively driving the electron sources of the multi electron source. | 2011-10-13 |
20110249803 | ATTACHMENT OF A HIGH-Z FOCAL TRACK LAYER TO A CARBON-CARBON COMPOSITE SUBSTRATE SERVING AS A ROTARY ANODE TARGET - The present invention refers to hybrid anode disk structures for use in X-ray tubes of the rotary anode type and is concerned more particularly with a novel light weight anode disk structure (RA) which comprises an adhesion promoting protective silicon carbide (SiC) interlayer (SCI) deposited onto a rotary X-ray tube's anode target (AT), wherein the latter may e.g. be made of a carbon-carbon composite substrate (SUB′). Moreover, a manufacturing method for robustly attaching a coating layer (CL) consisting of a high-Z material (e.g. a layer made of a tungsten-rhenium alloy) on the surface of said anode target is provided, whereupon according to said method it may be foreseen to apply a refractory metal overcoating layer (RML), such as given e.g. by a tantalum (Ta), hafnium (Hf), vanadium (V) or rhenium (Re) layer, to the silicon carbide interlayer (SCI) prior to the deposition of the tungsten-rhenium alloy. The invention thus leverages the tendency for cracking of the silicon carbide coated carbon composite substrate (SUB′) during thermal cycling and enhances adhesion of the silicon carbide/refractory metal interlayers to the carbon-carbon composite substrate (SUB′) and focal track coating layer (CL) by an interlocking mechanism. Key aspects of the proposed invention are: a) controlled formation of coating cracks (SC) in the silicon carbide layer (SCI) and b) conformal filling of SiC crack openings with a refractory metal. | 2011-10-13 |
20110249804 | MOBILE RADIOGRAPHY UNIT HAVING COLLAPSIBLE SUPPORT COLUMN - A mobile radiography apparatus has a wheeled transport frame and a sectioned vertical column mounted on the frame, defining a vertical axis and having a base section with a first vertical position relative to the vertical axis and at least a first movable section that is translatable to a variable vertical position along the vertical axis. A boom apparatus supports an x-ray source, wherein the boom apparatus is coupled to the first movable section for positioning of the x-ray source along the vertical axis and extends outward with respect to the sectioned vertical column for positioning of the x-ray source in a direction that is orthogonal to the vertical axis. | 2011-10-13 |
20110249805 | COUNTERWEIGHT FOR MOBILE X-RAY DEVICE - A mobile radiography apparatus has a portable transport frame. A sectioned vertical column mounted on the frame defines a vertical axis and has a base section having a fixed vertical position relative to the vertical axis and at least one movable section that is translatable to a variable vertical position. A boom apparatus supports an x-ray source and extends outward from the movable section and has an adjustable height relative to the vertical axis. A counterweight is operatively coupled to the boom apparatus to support displacement of the boom apparatus to any of a plurality of vertical positions along the movable section, wherein the counterweight, in cooperation with boom apparatus movement, travels along a shaft that extends within the movable section, wherein, at one or more of the height positions of the boom apparatus, a portion of the counterweight extends upward above the shaft of the sectioned vertical column. | 2011-10-13 |
20110249806 | MOBILE RADIOGRAPHY UNIT HAVING COLLAPSIBLE SUPPORT COLUMN - A mobile radiography apparatus has a portable transport frame and a sectioned vertical column mounted on the frame and defining a vertical axis, with a base section having a first vertical position relative to the vertical axis and a top section and at least one intermediate section between the top section and base section, wherein the top and the at least one intermediate sections are translatable along the vertical axis to vary the height of the sectioned vertical column. A boom apparatus supports an x-ray source, wherein the boom apparatus is coupled to the at least one intermediate section for positioning of the x-ray source along the vertical axis and extends outward with respect to the sectioned vertical column for positioning of the x-ray source in a direction that is orthogonal to the vertical axis. | 2011-10-13 |
20110249807 | COLLAPSIBLE COLUMN MOVEMENT APPARATUS FOR MOBILE X-RAY DEVICE - A mobile radiography apparatus has a portable transport frame and a sectioned vertical column mounted on the frame and defining a vertical axis and having a base section having a fixed vertical position relative to the vertical axis and at least one movable section that is translatable to a variable vertical position along the vertical axis. A counterbalance apparatus is coupled to the at least one movable section of the vertical column with an actuator that is energizable to translate the at least one movable section along the vertical axis. A boom apparatus supports an x-ray source and is coupled to the at least one movable section for vertical displacement of the boom apparatus to a height position. A height sensing element provides a signal that is indicative of the height position of the boom apparatus. | 2011-10-13 |
20110249808 | Calls Per Second Network Testing - Systems and methods for calls per second network testing are disclosed. The methods may be performed by a network testing system or other computing device. The method may include receiving user selection to create a network test. A user specification of a bulk network calls test type and the call transmission criteria for the network test are received. The call transmission criteria may include a number of calls per second and one of either a talk time or a number of channels. When the talk time is specified, the number of channels is calculated. Similarly, when the number of channels is specified, the talk time is calculated. User selection to begin the network test is received, and packets are transmitted for the network test according to the call transmission criteria. During transmission, the call transmission criteria are recalculated at a system defined interval to avoid bursts. | 2011-10-13 |
20110249809 | Telephony Content Signal Discrimination - A method for discriminating a telephony content signal into a first category or a second category is described. The method comprises a filtering procedure for obtaining from the telephony content signal a band signal set comprising one or more band signals, each band signal being associated with a respective frequency band at least one of said band signals being a sub-band signal (n) associated with a sub-band of an overall frequency band of the telephony content signal. Furthermore a determination procedure is provided for determining a band signal variation value (LLn) and a band signal strength value (TLn) for each band signal (n) of said band signal set. Finally, a discrimination procedure discriminates whether the telephony content signal is of the first category or of the second category. The discrimination procedure comprises one or both of an unconditional and a conditional step for evaluating a relationship of the band signal variation value (LLn) and said band signal strength value (TLn) for said sub-band signal (n). | 2011-10-13 |
20110249810 | DELAY ESTIMATOR - The present invention provides a method and apparatus for finding an estimate of the delay of a signal travelling between two points. A quantity is evaluated from the signal at a final number of time instants, at both a reference point and a reception point. The values are quantized by comparison with a threshold adapted to a typical magnitude of the quantity. If the quantized values from the reception point are shifted back by the true delay with respect to the quantized values from the reference point, then certain co-occurrences of quantized values have very low probability. Hence, the best delay estimate is that shift which yields the least number of low-probability co-occurrences. | 2011-10-13 |
20110249811 | Method and System for Analyzing Separated Voice Data of a Telephonic Communication Between a Customer and a Contact Center by Applying a Psychological Behavioral Model Thereto - A method for analyzing a telephonic communication between a customer and a contact center is provided. According to the method, a telephonic communication is separated into at least first constituent voice data and second constituent voice data. One of the first and second constituent voice data is analyzed by mining the voice data and applying a predetermined linguistic-based psychological behavioral model to one of the separated first and second constituent voice data. Behavioral assessment data is generated which corresponds to the analyzed voice data. | 2011-10-13 |
20110249812 | INTELLIGENT CALL PLATFORM FOR AN INTELLIGENT DISTRIBUTED NETWORK - A network management system communicates with a plurality of intelligent distributed network nodes. The network management system dynamically distributes managed objects across the plurality of intelligent distributed network nodes. Examples of managed objects distributed by the network management system include a service control managed object, a call control managed object, a bearer control managed object, and a resource proxy managed object. | 2011-10-13 |
20110249813 | METHOD FOR EMBEDDING SECRET MESSAGE INTO PNG IMAGE - A method for embedding a secret message into a PNG image comprises steps: converting a secret message into a plurality of secret codes; converting the secret codes into a plurality of secret shares; using a mapping process to modify values of the secret shares to approach a full-transparent value of an alpha channel of a PNG image, and sequentially embedding the mapped secret shares into the alpha channel. As the secret shares with high-transparent values, they leave the RGB channels untouched. Thus, embedding the secret shares into the PNG image does not make difference in the appearances between the secret-carrying image and the original PNG image. Therefore, the present invention can transmit secret message securely and realize covert communication. | 2011-10-13 |
20110249814 | DEVICE AND A METHOD FOR PERFORMING A CRYPTOGRAPHIC FUNCTION - The present invention provides a method and an apparatus for encrypting and decrypting digital information while imparting a high level of security on the encrypted digital information. A mixed-mode digital-analogue encryption and decryption technique is proposed, which minimises the probability of an unintended recipient of the thus encrypted information being able to decrypt the information using known reverse engineering techniques. | 2011-10-13 |
20110249815 | METHOD OF IMPLEMENTING A BLOCK CIPHER ALGORITHM - A method is provided of implementing a block cipher algorithm by a device storing a fixed initialization datum, comprising, before execution of a first iteration of the algorithm in the course of a session, a step of determining a modified initialization datum by way of a determined function supplied as input with the fixed initialization datum and a state value specific to the session, the state value being stored in the device, said modified initialization datum being usable to implement the first iteration of the algorithm. | 2011-10-13 |
20110249816 | HYBRID KEY MANAGEMENT METHOD FOR ROBUST SCADA SYSTEMS AND SESSION KEY GENERATION METHOD - Disclosed is a hybrid key management method for a supervisory control and data acquisition (SCADA) system in which a master terminal unit (MTU), a plurality of sub-master terminal units (sub-MTUs), and a plurality of remote terminal units (RTUs) are sequentially and hierarchically structured, the hybrid key management method comprising the steps of: (a) creating, by the MTU and the sub-MTUs, their own secret numbers and making and exchanging digital signatures; (b) creating, by the MTU, group keys; and (c) distributing, by the MTU, the group keys to the sub-MTUs and encrypting and decrypting the group keys using the secret numbers. | 2011-10-13 |
20110249817 | METHOD OF MANAGING GROUP KEY FOR SECURE MULTICAST COMMUNICATION - A group key management method for secure multicast communication includes: creating a tree having a root node, internal nodes and leaf nodes to manage group keys of a receiver group by a group key management server; generating user keys of all nodes excluding the root node in the tree on the basis of Chinese Remainder Theorem; assigning the leaf nodes of the tree to users of the receiver group; and sending the user keys of the leaf nodes to the corresponding users for group key management. Further, the group key management method for secure multicast communication includes generating group keys of all non-leaf nodes; computing a solution of congruence equations based on the user key and group key by using Chinese Remainder Theorem for each non-leaf node; and multicasting a group key update message to each user of the respective leaf nodes. | 2011-10-13 |
20110249818 | Transmission device and transmission method - A transmission device includes a transmission power setting unit that respectively sets a transmission power for transmitting a main sound signal indicating a main sound and transmission powers for transmitting one or two or more subsidiary sound signals which pertain to the main sound signal and which realize a predetermined sound effect, and a first communication unit that respectively transmits the main sound signal and the one or two or more subsidiary sound signals on time division channels using the same frequency band, based on the transmission powers set by the transmission power setting unit, wherein the transmission power setting unit sets the transmission power for the main sound signal to a first reference value, and sets the transmission powers for the subsidiary sound signals to a second reference value smaller than the first reference value. | 2011-10-13 |
20110249819 | AUDIO CHANNEL SPATIAL TRANSLATION - M audio input channels, each associated with a spatial direction, are translated to N audio output channels, each associated with a spatial direction, wherein M and N are positive whole integers, M is three or more, and N is three or more, by deriving the N audio output channels from the M audio input channels, wherein one or more of the M audio input channels is associated with a spatial direction other than a spatial direction with which any of the N audio output channels is associated, and at least one of the one or more of the M audio input channels is mapped to a respective set of at least three of the N output channels. At least three output channels of a set may be associated with contiguous spatial directions. | 2011-10-13 |
20110249820 | AUDIO SPATIAL EFFECT ENHANCEMENT - The disclosed subject matter relates to an architecture that can facilitate generation of enhanced spatial effects for stereo audio systems. Such can be accomplished by integrating on top ambience signal boosting employed in conventional systems. In particular, the ambience signal can be transformed according to a time-dependent function, which can simulate the auditory impressions of a real-world listening environment that may contain static, regularly moving, and/or irregular moving elements. | 2011-10-13 |