18th week of 2015 patent applcation highlights part 39 |
Patent application number | Title | Published |
20150117495 | Systems and methods for on-chip temperature sensor - Various embodiments of the invention use the characteristics of BJTs to compute parameter values required to de-embed the effects of non-idealities including BJT's-mismatch in the reverse saturation current and process-dependent injection factor. In some embodiments, a temperature sensor circuit and method provide high temperature accuracy in a low-cost way by individually calibrating each part, thereby, eliminating the need to accurately measure temperature with a precision temperature sensor. | 2015-04-30 |
20150117496 | Method, Devices and Chip Block for DS-CDMA - The present invention relates to a method of producing a chip block for wireless transmission in a Direct Sequence Code Division Multiple Access (DS-CDMA) communication system. The method comprises spreading a symbol over at least one chip block ( | 2015-04-30 |
20150117497 | DEVICES AND METHODS EMPLOYING HERMETIC TRANSFORMS FOR ENCODING AND DECODING DIGITAL INFORMATION IN SPREAD-SPECTRUM COMMUNICATION SYSTEMS - In a direct sequence spread-spectrum (DSSS) systems, such as CDMA, information is encoded in symbols using phase shift keying or quadrature amplitude modulation. Further, a transmitter applied a selected time shifted lag to each symbol to convey additional information. A receiver detects both the symbol data and the lag value. The receiver can use a hermetic matched filter matrix to identify the lag. | 2015-04-30 |
20150117498 | Adaptive Infinite Impulse Response (IIR)-Based Code Detection for Symbol-Level Equalizer - Code detection to assist a symbol-level equalizer in a receiver is described. In an embodiment, code detection uses adaptive Infinite Impulse Response (IIR) filtering to determine spreading code usage information and active code channels in a received signal. The spreading code usage information indicates if a spreading code associated with a code channel is among spreading codes used in the received signal. In another embodiment, the spreading code usage information is determined based on a forgetting factor associated with the filtering of a symbol power associated with the code channel. | 2015-04-30 |
20150117499 | METHOD OF GENERATING BINARY OFFSET CARRIER CORRELATION FUNCTION BASED ON PARTIAL CORRELATION FUNCTIONS, APPARATUS FOR TRACKING BINARY OFFSET CARRIER SIGNAL, AND SPREAD SPECTRUM SIGNAL RECEIVER SYSTEM USING THE SAME - A method of generating a BOC correlation function based on partial correlation functions, an apparatus for tracking a BOC signal, and a spread spectrum signal receiver system using the same are disclosed herein. The apparatus includes a frequency offset compensation unit, a local code generation unit, a mixer, a delay lock loop (DLL), a phase lock loop (PLL), and a data extraction unit. The frequency offset compensation unit outputs a compensated received signal with respect to a received signal. The local code generation unit generates a delay-compensated local code based on a code delay value. The mixer mixes the delay-compensated local code with the frequency offset-compensated received signal. The DLL repeatedly tracks and calculates a code delay value. The PLL repeatedly calculates a carrier frequency compensation value. The data extraction unit extracts spreading data from a mixture of the delay-compensated local code and the compensated received signal. | 2015-04-30 |
20150117500 | METHOD OF DETECTING INTERFERENCE IN A SATELLITE RADIO-NAVIGATION SIGNAL BY DETECTING A DEFORMATION OF THE CORRELATION FUNCTION - Method of detecting interference in a satellite radio-navigation signal, characterized in that it comprises the following steps: | 2015-04-30 |
20150117501 | METHOD OF DETECTING INTERFERENCE IN A SATELLITE RADIO-NAVIGATION SIGNAL BASED ON THE MONITORING OF A TEMPORAL CORRELATION COEFFICIENT - Method of detecting interference in a satellite radio-navigation signal determines the temporal position for which the correlation between the signal and a local spreading code offset by the position is maximum, calculating an information item representative of the intercorrelation between a first measurement of the correlation of the signal with a local spreading code at a first temporal position advanced relative to the temporal position of the maximum by a duration greater than the duration of a slot of the spreading code and a second measurement of the correlation of the signal with a local spreading code at a second temporal position delayed relative to the temporal position of the maximum by a duration greater than the duration of a slot of the spreading code, and comparing the item with a detection threshold configured at least as a function of the ratio of the powers of the signal and of the interference. | 2015-04-30 |
20150117502 | ANTENNA STRUCTURES AND METHODS - A communication device that incorporates the subject disclosure may include, for example, a conductive cover, an antenna structure, and a circuit. The antenna structure can comprise a first portion of the conductive cover having a first slot formed therein. The first portion can form a first antenna element for converting between first electromagnetic signals and first electrical signals. The first slot can define a shape of a trade dress design in the conductive cover. The circuit can be communicatively coupled to first edges of the first slot to define a first port. The circuit can perform operations comprising transmitting the first electronic signals into the first antenna element. Other embodiments are disclosed. | 2015-04-30 |
20150117503 | POWER LINE COMMUNICATION MODEM, POWER LINE COMMUNICATION SYSTEM, POWER LINE COMMUNICATION METHOD - A power line communication modem is provided, including a connection element configured to connect the power line communication modem to at least three wires of a power line network; a transmitter configured to transmit a first signal via a first combination of at least two wires of the at least three wires and to transmit a second signal via a second combination of at least two wires of the at least three wires; a controller adapted to individually control a transmit power of the first signal and the second signal. A corresponding power line communication system and a power line communication method are provided as well. | 2015-04-30 |
20150117504 | METHOD, APPARATUS AND SYSTEM FOR MEASURING LATENCY IN A PHYSICAL UNIT OF A CIRCUIT - In an embodiment, an apparatus includes a counter to count between a start value and an end value according to a local clock signal, a first register to store an output of the counter, a mirror elastic buffer to store samples of the counter output received from the first register, where the mirror elastic buffer is to mirror an elastic buffer of a receiver circuit, and a resolution logic to receive a counter output sample from the mirror elastic buffer and a current counter value output from the counter, and to determine a transit latency for a data element to traverse the receiver circuit based at least in part on the counter output sample and the current counter value. Other embodiments are described and claimed. | 2015-04-30 |
20150117505 | METHOD AND DEVICE FOR MEASURING THE CURRENT SIGNAL-TO-NOISE RATIO WHEN DECODING LDPC CODES - A method for measuring a signal-to-noise ratio when decoding Low Density Parity Check (LDPC) codes is provided. The method includes receiving from an input of a demodulator an input code word with “strong” or “weak” solutions, decoding the input code word in a LDPC decoder using a predetermined dependence of a mean number of iterations on the signal-to-noise ratio, recording a number of iterations performed during the decoding of the input code word, averaging derived values of the number of iterations for a specified time interval, estimating a signal-to-noise ratio based on averaged derived values of the number of iterations and based on the predetermined dependence of the mean number of iterations on the signal-to-noise ratio, and generating an output decoded code word. | 2015-04-30 |
20150117506 | SELF-CHARACTERIZING, SELF CALIBRATING AND SELF-MEASURING IMPEDANCE TUNERS - An impedance tuner system, usable in a measurement system including at least one measurement system device, the tuner system comprising the impedance tuner having a signal transmission line, and an impedance-varying system coupled to the transmission line, and responsive to command signals to selectively vary the impedance presented by the impedance tuner. An impedance tuner controller is configured to generate the command signals, and wherein measurement device drivers and at least one of characterization, calibration and measurement algorithms are embedded into the tuner controller, the tuner controller configured to allow a user to control execution of said at least one of the characterization, calibration and measurement algorithms using the tuner controller. | 2015-04-30 |
20150117507 | Blind Frequency Domain Interference Aware Chip-Level Equalization - A frequency domain chip-level equalizer is disclosed. The equalizer includes an estimation module configured to generate a frequency domain estimate of an auto-correlation function of a received signal; and an equalization module configured to apply frequency domain equalization to the received signal using the frequency domain estimate of the auto-correlation function to generate frequency domain equalized samples of the received signal. The equalizer further includes an Inverse Fast Fourier Transform (IFFT) module configured to generate time domain equalized samples of the received signal from the frequency domain equalized samples. | 2015-04-30 |
20150117508 | Broadband amplifier linearization using captured histogram data - A transmitter's operation is characterized using components having relatively low cost and low complexity. A device includes comparator(s) that compare a transmitter's analog output to predetermined level(s) to generate count(s) associated with analog output range bin(s). Each of the predetermined levels is associated with a corresponding one of the analog output range bins. A transfer function of the transmitter is generated using the comparison count values associated with the analog output range bin(s). A histogram may be generated from the comparison count values associated with the various analog output range bins. An equalizer is implemented to process data that will be transmitted by the transmitter. The equalizer uses equalizer parameter(s) that are selected based on the characterization of the transmitter (e.g., its transfer function, its histogram, etc.). The equalizer may use default or start up parameters until the transmitter's operation is characterized. | 2015-04-30 |
20150117509 | RECEIVING APPARATUS AND RECEIVING METHOD - A receiving apparatus includes a channel estimating unit that performs channel estimation by using a reception signal and obtains a channel estimation value, a demodulation processing unit that performs demodulation processing by using the channel estimation value and the reception signal, a weight calculating unit that calculates weight for decoding for each of channels by using the channel estimation value, and a decoding unit that performs decoding processing by using the weight and a result of the demodulation processing. | 2015-04-30 |
20150117510 | RATE-ADAPTIVE EQUALIZER THAT AUTOMATICALLY INITIALIZES ITSELF BASED ON DETECTED CHANNEL CONDITIONS, AND A METHOD - A rate-adaptive equalizer automatically initializes its tap coefficients to values. During an initialization process, a linear search algorithm is performed that sweeps the tap coefficients through different combinations of tap coefficients while assessing information about an eye associated with an input signal received over a communications channel. When the eye information indicates that the eye is open, the current tap coefficients are selected as the initial tap coefficients to be used at the beginning of the main adaptation algorithm. | 2015-04-30 |
20150117511 | BLIND EQUALIZATION TAP COEFFICIENT ADAPTATION IN OPTICAL SYSTEMS - A method of blind tap coefficient adaptation includes receiving a digital data signal including random digital data, equalizing a first portion of the digital data signal using a first set of predetermined tap coefficients and a second portion of the digital data signal using a second set of predetermined tap coefficients. The method includes generating a first eye diagram and a second eye diagram from a first portion and a second portion of an equalized signal, respectively. The first eye diagram is compared with the second eye diagram to determine which of the sets of predetermined tap coefficients results in a data signal having a higher signal quality. The method includes inputting to an equalizer as an initial set of tap coefficients the first set of predetermined tap coefficients or the second set of predetermined tap coefficients according to the determination. | 2015-04-30 |
20150117512 | System and Method for Linearizing Power Amplifiers - A power encoder includes an amplitude-phase splitter for splitting an input signal into an envelope signal and a phase modulated signal, and a pre-distortion unit for distorting the envelope signal using a look-up table (LUT) to produce a distorted envelope signal. The power encoder also includes a digital converter for combining the distorted envelope signal with the phase modulated signal to produce a distorted input signal, a pulse width modulator (PWM) for modulating the distorted input signal according to the transformation function to produce a modulated signal, and a switch mode power amplifier for amplifying the modulated signal. The look-up table stores a non-linear mapping of a transformation function and a relationship between the distorted input signal and the modulated signal is non-linear. | 2015-04-30 |
20150117513 | BANDWIDTH REDUCTION SYSTEM AND METHOD - A method and computing system for receiving a multi-frame video from a first user for transmission to a second user. A plurality of video frames included within the multi-frame video is selected. A reduced-bandwidth sample of the multi-frame video is generated from the plurality of video frames. The reduced-bandwidth sample is provided to the second user. | 2015-04-30 |
20150117514 | THREE-DIMENSIONAL VIDEO ENCODING METHOD USING SLICE HEADER AND METHOD THEREFOR, AND THREE-DIMENSIONAL VIDEO DECODING METHOD AND DEVICE THEREFOR - A 3D video encoding method includes determining whether a current slice is a depth image from among a texture image and the depth image, the texture image and the depth image being part of a 3D image of a same view and being encoded prior to the current slice; when the determining indicates that the current slice is the depth image, determining whether to encode the depth image by using the texture image; when the determining indicates that the current slice is the texture image, determining whether to encode the texture image by using the depth image; and encoding the texture image and the depth image based on a relationship between the texture image and the depth image, determined based on the determining of whether to encode the depth image by using the texture image and to encode the texture image by using the depth image. | 2015-04-30 |
20150117515 | Layered Encoding Using Spatial and Temporal Analysis - In some examples, a layered encoding component and a layered decoding component provide for different ways to encode and decode, respectively, video streams transmitted between devices. For instance, in encoding a video stream, video frames may be analyzed across multiple video frames to determine temporal characteristics, and analyzed spatially within a single given video frame. Further, based at partly on the analysis of the video frames, some video frames may be encoded with a first encoding and portions of other video frames may be encoded using a second layer encoding, where the second layer encoding may use a different type of encoding for different portions of a single given video frame. To decode an encoded video stream, both the base layer encoded video frames and the second layer encoded video frames may be transmitted, decoded, and combined at a destination device into a reconstructed video stream. | 2015-04-30 |
20150117516 | DYNAMIC VIDEO ENCODING BASED ON CHANNEL QUALITY - Various embodiments are generally directed to techniques to dynamically encode video based on channel quality and received video quality. An apparatus for dynamically encoding video includes a processor component; and a dynamic video encoder for execution by the processor component, the dynamic video encoder comprising a reference map generator to generate a reference map based on a channel quality corresponding to a plurality of encoded video frames to be transmitted over a channel, the reference map including indications of relationships between a plurality of video frames for purposes of encoding the plurality of video frames as the plurality of encoded video frames to increase a visual quality of the plurality of encoded video frames when transmitted over the channel and decoded. | 2015-04-30 |
20150117517 | VIDEO SIGNAL PROCESSING METHOD AND DEVICE - The present invention variably adjusts the maximum splitting information of a conversion unit according to the type of prediction unit and the splitting information on a coding unit and selects the optimal splitting information on the conversion unit. The present invention determines the maximum splitting information on the conversion unit of a depth block by using the maximum splitting information on the conversion unit for texture data. The present invention may lower complexity without a loss in efficiency by variably adjusting the maximum splitting information on the conversion unit in consideration of the characteristics of the depth data. The present invention may lower complexity by determining the maximum splitting information on the conversion unit of the depth data by using similar characteristics between the texture data and the depth data. | 2015-04-30 |
20150117518 | METHOD AND APPARATUS FOR ENCODING A VIDEO STREAM HAVING A TRANSPARENCY INFORMATION CHANNEL - Method for encoding a video stream having a transparency information channel in view of a predetermined target bit rate for said transparency information channel, comprising: tentatively applying a first encoding ( | 2015-04-30 |
20150117519 | ADAPTIVE INTER-COLOR COMPONENT RESIDUAL PREDICTION - A device for decoding video data includes a memory configured to store video data, and at least one processor. The at least one processor is configured to: determine a first bit-depth of luma residual samples for a block of video data, determine a second bit-depth of predicted chroma residual samples for the block of video data, adjust the luma residual samples based on the first bit-depth and the second bit-depth to produce bit-depth adjusted luma residual samples, determine chroma residual samples for the block of video data based on the bit-depth adjusted luma residual samples and the predicted chroma residual samples, and decode the block of video data based on the luma residual samples and the chroma residual samples. | 2015-04-30 |
20150117520 | RDO-BASED SMALL TRANSFORM COEFFICIENTS SUPPRESSION ALGORITHM FOR HEVC - A device for implementing a rate-distortion optimization (RDO)-based small transform coefficients suppression algorithm includes a processing module, a control block, and a switch. The processing module may be configured to process a prediction residual associated with a transform unit (TU) of a video frame and to generate a number of coefficients and a processed output. The control block may be configured to receive the coefficients and to generate a control signal based on the plurality of coefficients. The switch may be configured to select, as an output of the device, one of the processed output or an output of a zero-out block based on the control signal. The zero-out block may be configured to assign a zero value to each of the plurality of coefficients of the TU to suppress small transform coefficients. | 2015-04-30 |
20150117521 | METHOD AND APPARATUS FOR INTER COLOR COMPONENT PREDICTION - The present invention provides an image encoding apparatus carrying out inter-color prediction, comprising a residual block acquisition module obtaining a residual block with respect to a first color component and a residual block with respect to a second color component from a difference between an input block and a prediction block; an inter-color component prediction module carrying out inter-color component prediction by generating a residual signal reflecting a difference between a residual block with respect to the first color component and a residual block with respect to the second color component; a transform module generating a transformat coefficient by carrying out transformation with respect to the residual signal; a quantization module generating quantized data by carrying out quantization with respect to the transform coefficient; and an entropy encoding module carrying out entropy encoding by removing statistical redundancy of the quantized data. | 2015-04-30 |
20150117522 | METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING A QUANTIZATION PARAMETER BASED ON A QUADTREE STRUCTURE - Disclosed are an apparatus and a method of encoding/decoding a video, particularly a method and an apparatus for storing a quantization parameter differential value in a largest coding unit (LCU) based on quadtree splitting and adaptively predicting a quantization parameter value based on context information on neighboring CUs. Quadtree-based quantization parameter encoding and decoding methods and apparatuses effectively show information on a block having a quantization parameter differential value based on splitting information on a CU and adaptively predict a quantization parameter value using context information including a block size, block partition and a quantization parameter of a neighboring CU. | 2015-04-30 |
20150117523 | METHOD OF DERIVING QUANTIZATION PARAMETER - Provided is a method that restores a differential quantization parameter of a current coding unit, generates a quantization parameter predictor of the current coding unit using one or two quantization parameters of a left quantization parameter, an above quantization parameter and a previous quantization parameter and generates a quantization parameter of the current coding unit using the differential quantization parameter and the quantization parameter predictor, wherein a minimum size of quantization unit is adjusted per picture. Therefore, the complexity of the encoding and decoding apparatus is reduced by adjusting the minimum size of the quantization unit. Also, coding efficiency is improved by encoding the quantization parameter using plurality quantization parameters and by signaling the minimum size of the quantization unit per picture. | 2015-04-30 |
20150117524 | METHOD AND APPARATUS FOR ENCODING A SELECTED SPATIAL PORTION OF A VIDEO STREAM - A method for encoding a selected spatial portion of an original video stream as a stand-alone video stream, said method comprising obtaining picture element information pertaining to said selected spatial portion; obtaining encoding hints derived from a complementary spatial portion of said original video stream that is peripheral to said selected spatial portion; and encoding said selected spatial portion with use of said encoding hints. | 2015-04-30 |
20150117525 | APPARATUS AND METHOD FOR ENCODING IMAGE - According to an embodiment, an encoding apparatus includes a processor and a memory. The memory stores processor-executable instructions that, when executed by the processor, cause the processor to: divide an image included in an image group into a plurality of regions; calculate a priority for each of the regions on the basis of levels of importance of the regions; determine an order of processing for the regions on the basis of the corresponding priority; and encode the regions according to the determined order of processing. | 2015-04-30 |
20150117526 | METHOD FOR ENCODING MULTIVIEW VIDEO USING REFERENCE LIST FOR MULTIVIEW VIDEO PREDICTION AND DEVICE THEREFOR, AND METHOD FOR DECODING MULTIVIEW VIDEO USING REFERENCE LIST FOR MULTIVIEW VIDEO PREDICTION AND DEVICE THEREFOR - Provided are methods of encoding and decoding a multiview video by performing inter-prediction and inter-view prediction on each view image of the multiview video. | 2015-04-30 |
20150117527 | FILTERING OF PREDICTION UNITS ACCORDING TO INTRA PREDICTION DIRECTION - A video coding or decoding method in which luminance and chrominance samples in a 4:4:4 format or a 4:2:2 format are predicted from other respective samples according to a prediction direction associated with blocks of samples to be predicted; comprises detecting a prediction direction in respect of a current block to be predicted; generating a predicted block of chrominance samples according to other chrominance samples defined by the prediction direction; if the detected prediction direction is substantially vertical, filtering the left column of samples in the predicted block of chrominance samples, or if the detected prediction direction is substantially horizontal, filtering the top row of samples in the predicted block of chrominance samples; and encoding a difference between the filtered predicted chrominance block and the actual chrominance block or applying a decoded difference to the filtered predicted chrominance block so as to encode or decode the block respectively. | 2015-04-30 |
20150117528 | VIDEO ENCODING DEVICE AND DRIVING METHOD THEREOF - A video encoding device includes a pixel offset pre-calculation part configured to generate a loop-filtered pixel from a coding information and at least one of a source pixel, a predicted pixel and a restructured pixel, and configured to generate an offset from the loop-filtered pixel by performing a sample adaptive offset operation. The video encoding device also includes an entropy coding part configured to generate a bit stream from the offset. | 2015-04-30 |
20150117529 | VIDEO PREDICTIVE ENCODING DEVICE, VIDEO PREDICTIVE ENCODING METHOD, VIDEO PREDICTIVE ENCODING PROGRAM, VIDEO PREDICTIVE DECODING DEVICE, VIDEO PREDICTIVE DECODING METHOD, AND VIDEO PREDICTIVE DECODING PROGRAM - A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2̂L) (where L is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2̂L) times the maximum number of reconstructed pictures are storable in the frame memory. | 2015-04-30 |
20150117530 | METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO - Disclosed are a method and apparatus for encoding a video, and a method and apparatus for decoding a video, in which neighboring pixels used to perform intra prediction on a current block to be encoded are filtered and intra prediction is performed by using the filtered neighboring pixels. | 2015-04-30 |
20150117531 | METHOD OF DECODING MOVING PICTURES IN INTRA PREDICTION - A method of decoding an image is disclosed. The method comprises deriving an intra prediction mode; generating reference pixels if there exist unavailable reference pixels of a current block; determining whether reference pixels of the current block are filtered or not based on the intra prediction mode and a size of the current block; selecting a filter using the size of the current block and difference between reference pixels and filtering the reference pixels of the current block using the selected filter if it is determined that the reference pixels of the current block are filtered; and generating the prediction block according to the intra prediction mode. | 2015-04-30 |
20150117532 | DETERMINING INTRA PREDICTION MODE OF IMAGE CODING UNIT AND IMAGE DECODING UNIT - A method for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block. | 2015-04-30 |
20150117533 | DETERMINING INTRA PREDICTION MODE OF IMAGE CODING UNIT AND IMAGE DECODING UNIT - A method and apparatus for determining an intra prediction mode of a coding unit. Candidate intra prediction modes of a chrominance component coding unit, which includes an intra prediction mode of a luminance component coding unit, are determined, and costs of the chrominance component coding unit according to the determined candidate intra prediction modes are compared to determine a minimum cost intra prediction mode to be the intra prediction mode of the chrominance component coding unit. | 2015-04-30 |
20150117534 | METHOD AND APPARATUS FOR ENCODING VIDEO AND METHOD AND APPARATUS FOR DECODING VIDEO DETERMINING INTER-PREDICTION REFERENCE PICTURE LIST DEPENDING ON BLOCK SIZE - A motion prediction method includes determining, when a current slice is a B slice, a reference picture list to be used with respect to a current prediction unit from among prediction units included in a coding unit, and outputting, when a size of the current prediction unit is 4×8 or 8×4, inter-prediction index information of the current prediction unit indicating the reference picture list from among an L0 list and an L1 list, and when the size of the current prediction unit is not 4×8 or 8×4, the inter-prediction index information of the current prediction unit indicating the reference picture list from among the L0 list, the L1 list, and a bi-prediction list. | 2015-04-30 |
20150117535 | MOTION SEARCH WITH SCALED AND UNSCALED PICTURES - Reference pictures received via a video signal are downscaled to a specified resolution by a video encoder/decoder. For each current picture being processed by the video encoder/decoder, the current picture is maintained at its original received resolution, but is divided into blocks. Each block is further divided into sub-blocks, and each sub-block is compared, for a set of specified positions, to a corresponding block of the downscaled reference image to generate a set of candidate motion vectors. The candidate motion vectors are scored according to how closely their corresponding sub-block matches the corresponding block of the reference picture at the corresponding position, and a motion vector for each block of the current image is selected based on the scores. The selected motion vectors are used to process (e.g. encode) the video signal. | 2015-04-30 |
20150117536 | VIDEO DECODER TECHNIQUES - AVC decoding techniques include parsing a set of alternating slices of one or more picture frames and parsing another set of alternating slices of the one or more picture frames. The parsed set of alternating slices of the one or more picture frames are buffered separately from the parsed other set of alternating slices of the one or more picture frames. The buffered parsed set of alternating slices and the other buffered parsed set of alternating slices are alternating decoded. | 2015-04-30 |
20150117537 | SCALED VIDEO FOR PSEUDO-ANALOG TRANSMISSION IN SPATIAL DOMAIN - Scaled video for pseudo-analog transmission in the spatial domain is described. Boundaries are determined for M L-shaped chunks of coefficients of at least one frequency-transformed video frame of a group of pictures (GOP). The boundaries are determined based at least on variances of the coefficients of the M L-shaped chunks, such as by reducing or minimizing the sum of the square roots of the variances of the coefficients. Corresponding power scale factors for the M L-shaped chunks are determined based at least partly on the variances of the coefficients of the M L-shaped chunks, and the coefficients of the M L-shaped chunks are scaled using the corresponding power scale factors. The pixel values of the frames (e.g., the frames in the spatial domain) are transmitted on a pseudo-analog channel. At the receiver, retained spatial redundancy enables denoising in the spatial domain prior to de-scaling in the frequency domain. | 2015-04-30 |
20150117538 | FIXED TILE STRUCTURE FLAG INDICATING PARALLEL PROCESSING POSSIBILITY FOR A SEQUENCE OF COMPRESSED VIDEO - A method includes using a syntax element to indicate if tile information is the same for a sequence. The sequence is typically a bitstream for which one sequence parameter set (SPS) is valid. The syntax element can be part of the SPS or signaled such as in VUI or in an SEI message. Furthermore, the syntax element can be a flag, for example denoted tiles_fixed_structure_flag. The encoder decides how the pictures are divided by a tile structure enabling parallel encoding/decoding. When the same tile structure is used throughout a sequence, information that the same tile structure is used throughout a sequence of the video stream is sent to the decoder. | 2015-04-30 |
20150117539 | IMAGE PROCESSING APPARATUS, METHOD OF CALCULATING INFORMATION ACCORDING TO MOTION OF FRAME, AND STORAGE MEDIUM - An image processing apparatus that calculates information according to a motion of a frame of a moving image based on a motion vector detected in the frame decides the representative motion vector of each of a plurality of regions in the frame based on the detected motion vector, and calculates the information according to the motion of the frame based on, out of the motion vectors in each of the plurality of regions, a motion vector whose difference from the representative motion vector of each region is smaller than a predetermined value. | 2015-04-30 |
20150117540 | CODING APPARATUS, DECODING APPARATUS, CODING DATA, CODING METHOD, DECODING METHOD, AND PROGRAM - The present technology relates to a coding apparatus including a region segmentation unit that segments each of a plurality of frames in a coding target moving picture that includes the plurality of frames in a time-series order into a plurality of sub-regions having different feature amounts and provides a plurality of nodes on a boundary line of each of the sub-regions, a motion vector detector that correlates each of the plurality of nodes on a reference frame serving as a reference among the plurality of frames with an optional node on a non-reference frame other than the reference frame and detects a vector of which both ends are at the correlated node pair as a node motion vector for respective node pairs, and a coding data output unit that outputs data including the reference frame and the node motion vector as coding data obtained by coding the moving picture. | 2015-04-30 |
20150117541 | METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR 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. | 2015-04-30 |
20150117542 | MOTION VECTOR DERIVATION METHOD, MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A motion vector derivation unit includes a comparison unit for comparing a parameter TR1 for a reference vector with a predetermined value to determine whether it exceeds the predetermined value or not; a switching unit for switching selection between the maximum value of a pre-stored parameter TR and the parameter TR1 according to the comparison result by the comparison unit; a multiplier parameter table (for multipliers); and a multiplier parameter table (for divisors) for associating the parameter TR1 with a value approximate to the inverse value (1/TR1) of this parameter TR1. | 2015-04-30 |
20150117543 | Apparatus And Method For Setting Search Region For Predicting Motion Vector - An apparatus and a method for setting a search region for the predicting of a motion vector are disclosed. The apparatus for setting a search region for predicting a motion vector includes: a computation unit configured to compute differences between an origin vector of a search region for a target block for motion vector prediction and predictive motion vectors of multiple blocks adjacent to the target block, and compute a sum of absolute values of the differences; and a search region setting unit configured to set a range value of the search region for the target block by using at least one of the sum of absolute values of the differences and a directionality of the predictive motion vectors for the multiple adjacent blocks. According to an embodiment of the present invention, the amount of computation and the time expended for computation when predicting motion vectors can be significantly reduced. | 2015-04-30 |
20150117544 | IMAGE CODING METHOD AND APPARATUS WITH CANDIDATE MOTION VECTORS - An image coding method derives a first candidate having a first motion vector that has been used to code a first block, and derives a second candidate having a second motion vector that has been used to code a second block. It is determined whether a total number of candidates having the first candidate and the second candidate is less than a maximum candidate number, and a third bi-directional candidate is derived when the total number of candidates is less than the maximum candidate number. The third bi-directional candidate has a third motion vector that is identical to the first motion vector, and a fourth motion vector that is identical to the second motion vector. A merging candidate for coding a current block is selected from the candidates having the first candidate, the second candidate, and the third candidate. | 2015-04-30 |
20150117545 | Layered Video Encoding and Decoding - In some examples, a layered encoding component and a layered decoding component provide for different ways to encode and decode, respectively, video streams transmitted between devices. For instance, in encoding a video stream, a layered encoding component may analyze the content of successive video frames and determine different types of encoding techniques to use for different ones of the video frames. Further, in some cases, some of the encoding techniques may be used on less than an entire video frame. In another example, in decoding a video stream, a layered decoding component may receive video frames encoded with different types of encoding. The layered decoding component may decode the differently encoded video frames and combine them to reconstruct a video stream. | 2015-04-30 |
20150117546 | METHOD AND APPARATUS FOR ENTROPY CODING VIDEO AND METHOD AND APPARATUS FOR ENTROPY DECODING VIDEO - Provided are entropy decoding and encoding methods of a video. The entropy decoding method includes obtaining a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, from a bitstream, determining a context model for arithmetically decoding the transformation unit significant coefficient flag, based on the transformation depth of the transformation unit and arithmetically decoding the transformation unit significant coefficient flag based on the determined context model. | 2015-04-30 |
20150117547 | METHOD AND DEVICE FOR DECODING AND ENCODING SUPPLEMENTAL AUXILIARY INFORMATION OF THREE-DIMENSIONAL VIDEO SEQUENCE - Provided are a method and device for decoding and encoding supplemental auxiliary information of a three-dimensional video sequence. The method includes: obtaining supplemental auxiliary information for constructing a stereo-pair from a three-dimensional video sequence bitstream, the supplemental auxiliary information being used for indicating that the stereo-pair is constructed from a reconstructed three-dimensional video sequence, and the reconstructed three-dimensional video sequence being obtained by decoding the three-dimensional video sequence bitstream. The present invention solves the technical problem in the prior art that degraded displaying quality of a constructed stereo-pair appears because of the lack of supplemental auxiliary information in a three-dimensional video sequence bitstream, and achieves the technical effect of improving the display quality of a constructed stereoscopic video. | 2015-04-30 |
20150117548 | METHOD AND APPARATUS FOR ACCELERATING INVERSE TRANSFORM, AND METHOD AND APPARATUS FOR DECODING VIDEO STREAM - A method of decoding a bitstream, a method of accelerating an inverse transform, an apparatus, a video decoder, and a non-transitory computer-readable recording medium are provided. The method includes receiving an encoded bitstream, extracting transformation coefficients from the received bitstream, determining a position of a block including at least one nonzero transformation coefficient from among the extracted transformation coefficients, and generating decoded video data by inverse-transforming transformation coefficients in the block by using the determined position. | 2015-04-30 |
20150117549 | MOVING-PICTURE DECODING PROCESSING APPARATUS, MOVING-PICTURE CODING PROCESSING APPARATUS, AND OPERATING METHOD OF THE SAME - The present invention is directed to reduce deterioration in parallel processing capability. In a moving-picture decoding processing apparatus, information of a first plurality of frames and a second plurality of frames is supplied from a decoding control unit to first and second decoding processing units. For decoding the information from an intermediate point to an end point of a second preceding frame by the second decoding unit in a third period, use of a result of the process of the first decoding processing unit in the third period is inhibited, and use of a result of the process of a first preceding frame by the first decoding processing unit in a second period is permitted by an end signal. By reach of the intermediate point of the decoding of the second preceding frame by the second decoding processing unit in the second period, information from the start point to the intermediate point of the first subsequent frame included in the plural frames is decoded by the first decoding unit in the third period. | 2015-04-30 |
20150117550 | METHOD AND APPARATUS FOR DECODING AN ENHANCED VIDEO STREAM - Disclosed are herein are methods and systems for encoding and decoding enhanced video streams using a legacy and scalable video components. In one aspect, a method of encoding video data in a packetized elementary stream (PES), is disclosed. The method includes receiving a signal including frames of image data, wherein the frames include base layer and enhancement layer components; encoding the frames of image data to form video access units (AUs), wherein base layer AUs are formed for base layer components and enhancement layers AUs are formed for enhancement layer components, each AU including: an elementary stream header (ELSM) including image data metadata parameters associated with decoding and displaying the image data; a PES header including a presentation time stamp (PTS) and a PES packet length indicating the length of the PES header; one or more codestreams associated with a frame of the image data; adding a network abstraction layer (NAL) unit header defined by an enhancement layer video standard to each base layer AU, the NAL unit header being a constant value and length; and forming a modified PES header by increasing the PES packet length to include the length of the NAL unit header in it | 2015-04-30 |
20150117551 | Error Control in Multi-Stream EDR Video Codec - Error control in multi-stream visual dynamic range (VDR) codecs is described, including for a case of a layer-decomposed (non-backward compatible) video codecs. Error control can be provided by concealing lost and/or corrupted data in data frames of a decoded VDR bitstream prior to rendering a corresponding VDR image. Various algorithms and methods for concealing lost and/or corrupted data are provided. | 2015-04-30 |
20150117552 | Reconstructing a Multi-Latticed Video Signal - An apparatus for facilitating reception of multiple representations of a video signal. In one embodiment, the apparatus includes a mechanism for receiving plural representations of the video signal corresponding to plural decimated versions of the video signal, associating pictures of the received plural representations of the video signal, and outputting pictures corresponding to information from associated pictures in accordance with a relative temporal order. | 2015-04-30 |
20150117553 | Block Error Compensating Apparatus of Image Frame and Method Thereof - An apparatus and method are provided for compensating a block error in an image frame. This may include a video codec decoder for decoding an inputted image frame, and outputting a decoded image frame. An error concealment block may detect an error-generated block in the decoded image frame and compensate the detected error block through a median filter, and output the compensated image frame. | 2015-04-30 |
20150117554 | MULTI-METRIC FILTERING - A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels based on a comparison of a subset of the pixels in the block to other pixels in the block; determine a filter based on the first metric; and generate a filtered image by applying the filter to the group of pixels. The subset of pixels can be selected to not include pixels on the boundary of the block of pixels. | 2015-04-30 |
20150117555 | MULTI-METRIC FILTERING - A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels, determine a second metric for the group of pixels, determine a filter based on the first metric and the second metric, and generate a filtered image by applying the filter to the group of pixels. The first metric and second metric can be an activity metric and a direction metric, respectively, or can be other metrics such as an edge metric, horizontal activity metric, vertical activity metric, or diagonal activity metric. | 2015-04-30 |
20150117556 | COMMUNICATION DEVICE AND COMMUNICATION SYSTEM - Provided are a communication device and a communication system which are used for communication such as power line communication or inband communication in which a communication signal is superposed on lines contained in a charging cable, when a vehicle including a power storage device is charged from a power supply device, and which suppress a noise component such as harmonic distortion caused by occurrence of ringing without greatly affecting the communication signal, when transmitting the communication signal by switching from an idle state to an operating state. A transmission circuit included in a communication device of a vehicle includes line drivers, and the line drivers transmit a communication signal via two signal lines. In the two signal lines connected to the transmission circuit, inductance elements, resistance elements, and capacitance elements are interposed in series, respectively. | 2015-04-30 |
20150117557 | SYSTEMS AND METHODS FOR A MULTICARRIER MODULATION SYSTEM WITH A VARIABLE MARGIN - A multicarrier modem has a plurality of carriers over which data is transmitted. By assigning, foe example, one or more different margins to the individual carriers the data rate and impairment immunity can be increased. | 2015-04-30 |
20150117558 | ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING (OFDM) PEAK TO AVERAGE POWER RATIO (PAPR) REDUCTION USING LOW COMPLEXITY TRANSFORMATIONS - Methods and apparatus are provided for reducing Peak to Average Power Ratio (PAPR) in Orthogonal Frequency-Division Multiplexing (OFDM) modulation. A set of low complexity transformations is applied to an OFDM signal to generate a plurality of differently transformed OFDM signals. One of the plurality of differently transformed OFDM signals having a lowest PAPR is selected. The selected one of the plurality of differently transformed OFDM signals is transmitted. | 2015-04-30 |
20150117559 | LOW COMPLEXITY NEAR OPTIMAL TWO SPATIAL STREAM MAXIMAL LIKELIHOOD DETECTOR - Methods, apparatuses, and systems are provided for generating a candidate search set for ML detection of 2 | 2015-04-30 |
20150117560 | ANTENNA STRUCTURES AND METHODS THEREOF THAT HAVE A COMMON OPERATING FREQUENCY RANGE - A system that incorporates the subject disclosure may include, for example, a circuit for receiving a request to initiate a multiple-input and multiple-output (MIMO) communication session, and configuring a first antenna module and a second antenna module of a communication device to enable the MIMO communication session. The MIMO communication session can combine at least a portion of spectrum between a plurality of bands shared by the first antenna module and the second antenna module. Other embodiments are disclosed. | 2015-04-30 |
20150117561 | CODEBOOK ADAPTATION METHOD, RADIO BASE STATION APPARATUS AND USER EQUIPMENT - A method and system for adapting the structure of a codebook for precoding, by changing parameters, in downlink MIMO transmission using a plurality of transmitting antennas, is disclosed. A codebook adaptation method to adapt a codebook for precoding applied to downlink MIMO transmission includes the steps of reporting the codebook size of the codebook, defined with a plurality of parameters pertaining to gain information and phase information, from one communication apparatus to another communication apparatus, and, at the other communication apparatus, adapting the structure of the codebook, based on the codebook size reported from the one communication apparatus. | 2015-04-30 |
20150117562 | Coordinated Multi-Point Transmission and Reception (CoMP) with Non-Ideal Backhaul (NIB) - A wireless communications method implemented in a transmission point (TP) used in a mobile communications system is disclosed. The wireless communications method includes receiving, from another TP, short-term channel state information (short-term CSI), and processing the short-term CSI. Other methods, systems, and apparatuses also are disclosed. | 2015-04-30 |
20150117563 | METHOD FOR TRANSMITTING CHANNEL QUALITY INFORMATION IN A MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method for transmitting channel quality information (CQI) in a MIMO system is provided that allows a receiver to feed back a CQI value to a transmitter. The method includes receiving a transmission (Tx) pilot signal for each Tx antenna from a base station (BS), measuring a first CQI value of a first codeword and a second CQI value of a second codeword based on the pilot signal, and transmitting the first CQI value of the first codeword and the second CQI value of the second codeword to the BS where at least the first or second CQI value includes specific information capable of indicating a transmission restriction status of a corresponding codeword. | 2015-04-30 |
20150117564 | INDUCTOR-LESS 50% DUTY CYCLE WIDE-RANGE DIVIDE-BY-3 CIRCUIT - Certain aspects of the present disclosure provide apparatus for producing an output signal having a duty cycle of 50% and a frequency that is one third that of an input signal. One example frequency dividing circuit for producing such an output signal generally includes first and second flip-flops; first, second, and third logic circuits, each configured to function equivalently to a logic OR gate; and an internal frequency dividing circuit configured to generate an output waveform having a frequency that is one half that of an input waveform. | 2015-04-30 |
20150117565 | CONTROLLING OUTPUT POWER OF MULTIPLE-INPUT SINGLE-OUTPUT (MISO) DEVICE - Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion. | 2015-04-30 |
20150117566 | METHOD AND SYSTEM FOR MULTI-CHANNEL SIGNAL TRANSMISSION - The present invention discloses a multi-channel signal transmission system and the transmission method thereof. The system comprises a transmitter, a selection device, a compensation device, and power amplifier modules. The transmitter comprises a Ramp Circuit connected to the transmitter and the power amplifier modules respectively. The selection device is configured between the transmitter and the power amplifier modules. The transmission method comprises: selecting a transmission channel by the transmitter for transmitting the signal, the selection device strobes a transmission route between the transmission channel and the power amplifier modules, and based on different transmission power parameters, the Ramp Circuit transmits different control signals to the power amplifier modules to adjust transmission gain of the power amplifier modules. The present invention has the purpose of improving the integration level of the chip and decreasing the board area and the difficulty of wiring. | 2015-04-30 |
20150117567 | CARTESIAN DIGITAL POWER AMPLIFIER USING COORDINATE ROTATION - An apparatus includes first through fourth circuits. The first circuit determines a region of an input signal. The region is one of a plurality of regions. The second circuit generates a rotated input signal by rotating the input signal by a first angle according to the region. The third circuit phase shifts a carrier signal by a second angle according to the region. A fourth circuit amplifies the phase shifted carrier signal according to the rotated input signal. A method comprises determining a region according to a phase angle of an input signal, determining a rotation angle according to the region, generating a rotated carrier signal according to a carrier signal and the rotation angle, generating a rotated input signal according to the input signal and the negative of the rotation angle, and amplifying the rotated carrier signal according to the rotated input signal. | 2015-04-30 |
20150117568 | ENABLING MODULATION MODE SELECTION - It is presented a method, performed in a network node, for enabling selection of modulation mode for a user equipment, UE. The method comprises: determining whether to provide higher order modulation, HOM, mode support for the UE; when HOM mode support is to be provided, selecting at least one HOM table for the UE; and when HOM mode support is not to be provided, selecting at least one non-HOM table for the UE. | 2015-04-30 |
20150117569 | Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications - Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized. | 2015-04-30 |
20150117570 | SIDEBAND SUPPRESSION IN ANGLE MODULATED SIGNALS - In an angle modulated radio transmitter, the total power is the same when modulated or unmodulated. Angle modulation produces multiple sideband pairs. The power in the sidebands is derived from the carrier. When a complex modulating waveform is used, the power (and therefore the amplitude) of the carrier varies. A system and method is provided for dramatically minimizing, to nearly zero, the bandwidth needed to transmit digital information using sideband suppression of angle modulated signals. The systems described use various techniques to suppress sideband pairs, leaving the carrier signal. The amplitude variations of the carrier are used to convey information. In some examples, techniques are used to filter and/or phase out one or more sideband pairs, leaving the carrier signal. | 2015-04-30 |
20150117571 | RECEIVER AND METHOD FOR GAIN CONTROL - An RFVGA variably controls a gain according to an RFVGA gain control signal and amplifies and outputs a reception signal. A low-pass filter filters a signal output from a frequency converter. An OFDM demodulator generates a digital signal based on an output signal from the low-pass filter. A power detection evaluation circuit controls the RFVGA gain control signal based on a voltage value (DET | 2015-04-30 |
20150117572 | MICROWAVE COMMUNICATIONS DEVICE AND MICROWAVE COMMUNICATIONS SYSTEM - The present invention discloses microwave communications devices. The microwave communications device includes: a first converting module, a second converting module, configured to perform mutual conversion between a baseband signal or an intermediate frequency signal and a microwave signal, where microwave signals received or output by the first converting module and the second converting module respectively have a same polarization direction or perpendicular polarization directions; and an orthomode transducer with three waveguide ports, configured to perform separation and synthesis of orthogonally polarized microwave signals, The microwave communications devices in embodiments of the present invention can, by providing dual channels and integrating an orthomode transducer inside the microwave communications device, increase a transmission capacity while improving equipment application flexibility, reducing installation complexity, and lowering costs. | 2015-04-30 |
20150117573 | Radio Frequency (RF) Receivers With Whitened Digital Clocks And Related Methods - Radio frequency (RF) receivers having whitened digital clocks and related methods are disclosed. Disclosed embodiments generate whitened clocks having random variations that are used to operate digital processing blocks so that interference created by the whitened clocks is seen as white noise within the received RF signal spectrum. RF input signals are received by RF front-ends (RFFEs) that output analog signals associated with channels within the RF input signals. These analog signals are converted to digital information and processed by digital receive path circuitry that outputs digital data associated with the channel. The digital receive path circuitry includes a whitened clock generator that generates a whitened clock having random variations and which a digital processing block that operates based upon the whitened clock. Further, the RFFE and the digital receive path circuitry are located within a single integrated circuit. | 2015-04-30 |
20150117574 | Interference Reduction for Multiple Signals - The present invention reduces the degradation in performance of one or more radio signals that are co-transmitted with a first radio signal from the same transmitting antenna in the same frequency channel and received by the same antenna due to multipath or other shared interference, where the one or more radio signals can be separated from the first radio signal. All received signals are coupled to the same adaptive array or adaptive filter to reduce multipath or other shared interference of the first radio signal, which reduces multipath and other shared interference in the other radio signals before they are separated and processed by their respective receivers, or the individual radio signals are separated before the first signal enters the adaptive array and coupled to a slave weighting network slaved to the weights of the adaptive array of the first signal to reduce interference in all the signals. | 2015-04-30 |
20150117575 | METHOD, SYSTEM AND APPARATUS FOR CARRIER FREQUENCY OFFSET CORRECTION AND CHANNEL ESTIMATION - A receiver is configured to use a first part of a received signal and a second part of the received signal to determine, respectively, a first estimate and a second estimate of the channel. The first and second parts carry information for decoding the received signal in a first protocol and in a second protocol, respectively. A final estimate of the channel is performed from the first and the second estimates. The final estimate is then used for decoding the data in the received signal according to one of the protocols. A carrier frequency offset from a set of symbols occurring prior to preamble symbols is determined and is corrected for decoding the preamble symbols. The corrected preamble symbols are then used for estimating the channel. In one embodiment, the carrier frequency offset is determined for the multiple antenna packet format used in the 802.11n standard. | 2015-04-30 |
20150117576 | TIMING SYNCHRONIZATION APPARATUS AND METHOD FOR MULTI-CARRIER MODULATION SIGNALS - Embodiments of the present invention provide a timing synchronization apparatus and method for multi-carrier modulation signals. Wherein the apparatus includes: a predicting unit configured to denoise delay of symbols received before a currently received symbol, and to predict delay of the currently received symbol or of a symbol received after the currently received symbol according to the denoised symbol delay and a sampling clock frequency offset; and a timing synchronization unit configured to perform timing synchronization according to a predicted value of the delay of the currently received symbol or of the symbol received after the currently received symbol. With the apparatus and method, a signal to noise ratio of multi-carrier modulation signals may be effectively improved, and an effect of a timing error on a communication system may be lowered, thereby improving performance of the communication system. | 2015-04-30 |
20150117577 | WIRELESS COMMUNICATION RECEIVER WITH I/Q IMBALANCE ESTIMATION AND CORRECTION TECHNIQUES - Techniques are provided that utilize information on the characteristics of the transmitted signal to improve the accuracy of the I/Q imbalance estimation and correction. These techniques can be used to achieve improved image rejection performance over existing solutions, through the use of signal conditioning, windowing and the use of statistical information on the received signal. A number of techniques aimed at improving the accuracy of the I/Q imbalance estimation/correction are presented, including different modes of I/Q imbalance estimation and I/Q imbalance correction in the presence of a complex IF filter in the transceiver. The processing is performed mostly in the DBB in order to be area/power efficient. | 2015-04-30 |
20150117578 | TRANSMISSION PROTOCOL DECODING METHOD, DEVICE, AND TRANSMISSION PROTOCOL DECODING CHIP - A transmission protocol decoding method, device, and a transport protocol decoder chip are provided for generating an oscillation signal; detecting a frame start signal, and outputting a sampling control signal when the frame start signal is detected; counting an oscillation period of the oscillation signal within a time period of low level bits of a frame start byte to obtain a count value after receiving the control signal, and then processing a division operation to the count value to output a quotient and a remainder; determining a sampling period according to the quotient and the remainder to generate a sampling pulse, and then decoding a data byte of a transmission data according to the sampling pulse. | 2015-04-30 |
20150117579 | RECEPTION CIRCUIT - A reception circuit includes: an equalizer; a comparator to compare an output signal of the equalizer with first, second, and third thresholds at a first-timing to output first, second, and third comparison-results, respectively; a selector to select any one of the first and second comparison-results based on a determination-result at a timing before the first-timing, and update the determination-result; a detector to detect a phase information based on the first or second comparison-result not selected; a shifter to adjust a sampling clock phase based on the phase information detected; and a controller to set a third threshold based on the first and second thresholds by either adjusting the first and second thresholds based on the output signal amplitude or adding/subtracting a first value to/from the output signal, detect an equalization-result based on the third comparison-result by the set third threshold, and adjust an equalization coefficient based on the detected equalization-result. | 2015-04-30 |
20150117580 | SIMULTANEOUS TRANSMISSION OF CLOCK AND BIDIRECTIONAL DATA OVER A COMMUNICATION CHANNEL - Embodiments of the invention are generally directed to simultaneous transmission of clock and bidirectional data over a communication channel. An embodiment of a transmitting device includes a modulator to generate a modulated signal including a clock signal and a data signal, the clock signal being modulated by a first signal edge of the modulated signal and the data signal being modulated by a position of a second signal edge of the modulated signal; a driver to drive the modulated signal on a communication channel; an echo canceller to subtract reflected signals on the communication channel; and a data recovery module to recover a signal received on the communication channel, the received signal being encoded by Return-to-Zero (RZ) encoding, the signal being received simultaneously with driving the modulated signal on the communication channel. | 2015-04-30 |
20150117581 | RECEPTION APPARATUS, RECEPTION METHOD, AND PROGRAM - Provided is a reception apparatus including: a correction unit that corrects phase compensation for each one of multiple phase-compensated segments that are connected one after another, in which the correction unit includes a timing generation unit that, based on a phase of a known signal, generates a timing at which an amount of the phase compensation is initialized, an amount-of-correction generation unit that, based on the phase of the known signal, generates an amount of correction for correcting the amount of the phase compensation, and a phase correction unit that performs phase correction on the phase compensation using the amount of the correction that is generated by the amount-of-correction generation unit. | 2015-04-30 |
20150117582 | PREDICTIVE PERIODIC SYNCHRONIZATION USING PHASE-LOCKED LOOP DIGITAL RATIO UPDATES - Embodiments are described for a method and system of enabling updates from a clock controller to be sent directly to a predictive synchronizer to manage instant changes in frequency between transmit and receive clock domains, comprising receiving receive and transmit reference frequencies from a phase-locked loop circuit, receiving receive and transmit constant codes from a controller coupled to the phase-locked loop circuit, obtaining a time delay factor to accommodate phase detection between the transmit and receive clock domains, and calculating new detection interval and frequency information using the time delay factor, the reference frequencies, and the constant codes. | 2015-04-30 |
20150117583 | Nuclear Fusion Reactor with Power Extraction - An apparatus for enhanced nuclear fusion reaction within a plasma by using voltage differential acceleration to raise its temperature and mechanically spinning the fusion containment utilizing centripetal force to concentrate ions density within a region by increasing the gravity in this region. Direct energy pickup from the fusion plasma, direct energy pickup to arc a chamber to produce a magnetic field for pick up with ferrite coil assemblies around the arc chamber to create electricity, collect the heat from the fusion containment to drive a turbine, heat engine or other heat suitable device. | 2015-04-30 |
20150117584 | NEUTRON SOURCE AND NEUTRON GENERATOR - The present invention provides a novel neutron source. A neutron source ( | 2015-04-30 |
20150117585 | Gas Supply Apparatus and Air or Nitrogen Supply Apparatus of Nuclear Plant - A gas supply apparatus of the present invention includes: an operating valve that is placed in the middle of a piping for letting at least gas in a plant flow and that operates a valve main body by the gas flowing in the piping; a first electromagnetic valve that is placed in the middle of the piping and that opens or closes a flow of the gas to the operating valve; and a gas supply source that supplies the first electromagnetic valve with the gas. A gas discharge line of the first electromagnetic valve has a switching valve placed therein and has a second electromagnetic valve placed between the switching valve and the gas supply source. The switching valve switches between a gas discharge from the first electromagnetic valve and a gas supply to the first electromagnetic valve. When a power source is lost, the switching valve is switched to connection to the gas supply source so as to supply the first electromagnetic valve with the gas. At the time of a normal operation, the second electromagnetic valve opens a gas discharge line side and closes a switching valve side, and when the power source is lost, the second electromagnetic valve opens the switching valve side and closes the gas discharge line side. In this way, even when the power source is lost, an operating valve such as an air-operated valve can not only be operated remotely but also be operated safely by a remote operator. | 2015-04-30 |
20150117586 | ALTERNATIVE SAFETY FUNCTION SYSTEM FOR NUCLEAR REACTOR - In conjunction with a pressurized water reactor (PWR) and a pressurizer configured to control pressure in the reactor pressure vessel, a decay heat removal system comprises a pressurized passive condenser, a turbine-driven pump connected to suction water from at least one water source into the reactor pressure vessel; and steam piping configured to deliver steam from the pressurizer to the turbine to operate the pump and to discharge the delivered steam into the pressurized passive condenser. The pump and turbine may be mounted on a common shaft via which the turbine drives the pump. The at least one water source may include a refueling water storage tank (RWST) and/or the pressurized passive condenser. A pressurizer power operated relief valve may control discharge of a portion of the delivered steam bypassing the turbine into the pressurized passive condenser to control pressure in the pressurizer. | 2015-04-30 |
20150117587 | AMBIENT TEMPERATURE DECONTAMINATION OF NUCLEAR POWER PLANT COMPONENT SURFACES CONTAINING RADIONUCLIDES IN A METAL OXIDE - This invention generally concerns radioactive decontamination of deposits on components in a nuclear power plant and is specifically concerned with improved systems and methods for disrupting, dissolving, removing and reducing at ambient temperature radionuclides formed on the primary side surfaces of components in a pressurized water reactor and the internal components of a boiling water reactor. The methods include identifying the structure, taking the structure out of operational service, contacting the structure with an aqueous solution (e.g., a recirculating flow or static immersion), and adding an effective amount of elemental metal in solid form to the aqueous solution. | 2015-04-30 |
20150117588 | PURIFICATION METHOD AND APPARATUS FOR SPENT FUEL POOL WATER AFTER NUCLEAR POWER GENERATION AND TREATMENT METHOD AND APPARATUS FOR SPENT FUEL POOL WATER - A purification method for spent fuel pool water from nuclear power generation, the method comprising: passing the water at a linear flow velocity of 50 m/h or less through a purification apparatus for the water comprising an ion exchange resin layer and a metal-doped resin layer which is laid at a bed height of 2 cm or more on a surface layer of the ion exchange resin layer wherein the water to be treated is contacted with the metal-doped resin layer to decompose a pro-oxidant contained in the water; and subsequently contacting the water with the ion exchange resin. | 2015-04-30 |
20150117589 | Molten Salt Reactor - To provide a molten salt reactor that enables heat in the molten salt reactor to be extracted without bringing metal piping for heat exchange into direct contact with a molten salt. A molten salt reactor is provided with: a moderator structure | 2015-04-30 |
20150117590 | Shift frequency demultiplier - A shift frequency demultiplier includes: an inverter; N-2 registers; and N-4 OR gates; wherein an output terminal of the No. N-2 register is connected to an input terminal of the inverter, an output terminal of the inverter is connected to an input terminal of the No. 1 register and input terminals of the OR gates; the output terminal of the No. 1 register is connected to another input terminal of the No. 1 OR gate, the output terminal of the No. N-4 register is connected to another input terminal of the No. N-4 OR gate; an output terminal of the No. 1 OR gate is connected to the input terminal of the No. 2 register, an output terminal of the No. N-4 OR gate is connected to the input terminal of the No. N-3 register whose the output terminal is connected to an input terminal of the No. N-2 register. | 2015-04-30 |
20150117591 | SYNCHRONIZED VIEW DATA ACQUISITION BETWEEN STATIONARY SPECTRAL DETECTORS AND ROTATING ENERGY INTEGRATING DETECTORS FOR SPECTRAL COMPUTER-AIDED TOMOGRAPHY - A control circuit for a computer-aided tomography (CT) system includes an input that receives a master timing signal and an input that receives a first timing signal. The control circuit includes a mode detection circuit that determines the scan mode of the CT system based on the master timing signal and a first timing signal, where the frequency of the first time signal is lower than the frequency of the master timing signal. The control circuit also includes a circuit that generates a second timing signal based on the master timing signal and the scan mode, where the second timing signal that has a lower frequency than the master timing frequency but a higher frequency than the frequency of the first timing signal. | 2015-04-30 |
20150117592 | Method and apparatus for increasing field of view in cone-beam computerized tomography acquisition - A method and apparatus for Cone-Beam Computerized Tomography, (CBCT) is configured to increase the maximum Field-Of-View (FOV) through a composite scanning protocol and includes acquisition and reconstruction of multiple volumes related to partially overlapping different anatomic areas, and the subsequent stitching of those volumes, thereby obtaining, as a final result, a single final volume having dimensions larger than those otherwise provided by the geometry of the acquisition system. | 2015-04-30 |
20150117593 | METHOD FOR SPECTRAL CT LOCAL TOMOGRAPHY - A method for performing reconstruction for a region of interest (ROI) of an object is provided. The method includes designating the ROI within the object, the ROI being located within a scan field of view (FOV) of a combined third- and fourth-generation CT scanner, the CT scanner including fixed photon-counting detectors (PCDs), and an X-ray source that rotates about the object in synchronization with a rotating detector. Further, the method includes determining, for each PCD, as a function of view angle, an on/off timing schedule, based on a size and location of the designated ROI, and performing a scan to obtain a first data set from the rotating detector and a second data set from the plurality of PCDs, while turning each PCD on and off according to the determined schedule. Finally, the method includes performing reconstruction using the first and second data sets to obtain ROI spectral images. | 2015-04-30 |
20150117594 | ESTIMATING MULTI-ENERGY DATA IN A RADIATION IMAGING MODALITY - Multi-energy imaging is afforded with a single detector array by generating a first data set, indicative of a first radiation energy spectrum, using a first set of cells of the array, and by generating a second data set, indicative of a second radiation energy spectrum, using a second set of cells of the array (e.g., where substantially more cells are in the first set than the second). The first data set is comprised of measured data from the first set of cells and estimated data that would have been yielded from the second set of cells had the second set been configured to detect the first energy spectrum. The second data set is comprised of measured data yielded from the second set of cells and estimated data that would have been yielded from the first set of cells had the first set been configured to detect the second energy spectrum. | 2015-04-30 |