41st week of 2008 patent applcation highlights part 27 |
Patent application number | Title | Published |
20080247401 | Remote Access to Home Communication Services - A home-link gateway system for providing remote access to contracted telephone services at a home or other physical location is disclosed. The home-link gateway manages communications at the home location, for example between a PSTN or VoIP telephone network and local telephone handsets. A remote client agent requests access to telephone services, via the Internet. Following authorization and registration, the home-link gateway couples the remote client agent to the telephone network, or to local handsets, as though the remote client agent were deployed at the home location. | 2008-10-09 |
20080247402 | COMMUNICATION RELAYING APPARATUS, COMMUNICATION RELAY, AND CONTROLLING METHOD - A wide area network is constructed by connecting a plurality of bases to a multipoint switching apparatus. Each base has a certain contracted communication band. If a packet is received from a first base having a higher contracted communication band and the packet is directed to a second base having a lower contracted communication band, the traffic from the first base is limited to the contracted communication band of the second base. | 2008-10-09 |
20080247403 | NETWORK BRIDGE APPARATUS AND COMMUNICATION METHOD THEREOF - A network bridge apparatus and a communication method using the network bridge apparatus are provided. In the network bridge apparatus, a storage stores first attribute information which is provided by a first device of a first cluster for communication, an external communicator transmits the stored first attribute information to a second cluster and receives second attribute information which is provided by a second device of the second cluster for communication, from the second cluster, and a controller recognizes a service provided by the second device from the received second attribute information, creates a virtual device corresponding to the second device by changing the received second attribute information, and maps the changed second attribute information to the received second attribute information. | 2008-10-09 |
20080247404 | TELEPHONE SYSTEM AND GATEWAY DEVICE - According to one embodiment, a gateway connects a plurality of telephones to a packet network including a server processes calls using address information, includes a registration processor requires registrations of a plurality of items of address information to be used for call origination to packet network, a table records the plurality of items of address information and results of registrations for each item of address information in packet network, a selection processor confirms the results of the registrations of the address information included in the notified request message from a transmitting origin telephone by referring to the table and selects another item of address information if the relevant address information has not been registered, and a call controller sends a message including address information if the address information included in the request message has been registered, and otherwise, including another information selected from the selection processor to the server. | 2008-10-09 |
20080247405 | APPARATUS AND METHOD FOR SWITCH ZONING - An apparatus for assigning a device to a network zone comprises a switch component operable to receive an attachment request, port and device name data and device operating characteristics data from the device; and a rules engine operable to acquire the device operating characteristics data from the switch component; the rules engine being operable to apply rules logic to the device operating characteristics data to select a zone for the device. The rules engine may be further operable to apply the rules logic to the port and device name data. The network zone may be a network zone of a fibre channel network. | 2008-10-09 |
20080247406 | Layer 2 virtual private network over PBB-TE/PBT and seamless interworking with VPLS - A Layer 2 Virtual Private Network (L2VPN) system is provided. A Provider Backbone Bridge (PBB) network is provided which comprises a plurality of sites to be connected via a L2VPN. The plurality of sites in the PBB network is connected using a plurality of provider backbone trunks that includes a Provider Backbone Transport (PBT) trunk or a Provider Backbone Bridge Traffic Engineering (PBB-TE) trunk, such that the L2VPN includes the plurality of sites. | 2008-10-09 |
20080247407 | COMBINED SCHEDULING AND NETWORK CODING FOR WIRELESS MESH NETWORKS - An architecture by which combined scheduling and network coding can be used in mesh networks, and more particularly wireless mesh networks. In various embodiments, this architecture includes a scheduling MAC protocol for scheduling nodes in the mesh network in order to take advantage of network coding opportunities. The schedule takes advantage of these opportunities by assigning a gain to transmit packets based upon the number of packets that are transmitted concurrently and choosing a schedule which minimizes the gain over the scheduling horizon. Regarding the assigned gain, in one embodiment this value is one for basic non-encoded operations and two or more for encoded operations. A scheduling MAC protocol is also used to announce and arbitrate network coding opportunities by indicating which packets (as characterized by their transmission slot) are to be encoded with each other. | 2008-10-09 |
20080247408 | Reliable Broadcast Protocol and Apparatus for Sensor Networks - A method for broadcasting messages in an ad hoc wireless network having a tree-based architecture is provided. When a node receives a broadcast message for re-broadcasting to other nodes in the network, it builds a list of identifiers of other nodes in the network from which the node requires reception of a broadcast message as an implicit acknowledgment that said other nodes in the network have received said broadcast message. The node builds this implicit acknowledgment list based on stored data pertaining to an existing tree-based topology of the network. After this list is built, the node re-broadcasts the broadcast message. Each node in the network executes this broadcasting protocol and in so doing a broadcast message quickly and efficiently propagates through the network with minimal redundancy and impact on the topology of the network. | 2008-10-09 |
20080247409 | Queuing and Scheduling Architecture Using Both Internal and External Packet Memory for Network Appliances - Enhanced memory management schemes are presented to extend the flexibility of using either internal or external packet memory within the same network device. In the proposed schemes, the user can choose either static or dynamic schemes, both or which are capable of using both internal and external memory, depending on the deployment scenario and applications. This gives the user flexible choices when building unified wired and wireless networks that are either low-cost or feature-rich, or a combination of both. A method for buffering packets in a network device, and a network device including processing logic capable of performing the method are presented. The method includes initializing a plurality of output queues, determining to which of the plurality of output queues a packet arriving at the network device is destined, storing the packet in one or more buffers, where the one or more buffers is selected from a packet memory group including an internal packet memory and an external packet memory, and enqueuing the one or more buffers to the destined output queue. | 2008-10-09 |
20080247410 | Creating A Low Bandwidth Channel Within A High Bandwidth Packet Stream - Creating a low-bandwidth channel in a high-bandwidth channel. By taking advantage of extra bandwidth in a high-bandwidth channel, a low-bandwidth channel is created by inserting extra packets. When an inter-packet gap of the proper duration is detected, the extra packet is inserted and any incoming packets on the high-bandwidth channel are stored in an elastic buffer. Observing inter-packet gaps, minimal latency is introduced in the high-bandwidth channel when there is no extra packet in the process of being sent, and the effects of sending a packet on the low-bandwidth channel are absorbed and distributed among other passing traffic. | 2008-10-09 |
20080247411 | Method to operate a crossbar switch - A method is described to operate a crossbar switch comprising a crossbar fabric with N sending and M receiving ports, with port cards connected to at least one sending and/or receiving port each of the crossbar fabric, said crossbar switch further comprising a control unit connected with the port cards via discrete control channel links, wherein C ports are clustered on a single receiving port card so that such a receiving port card in a single time-step can receive up to C data cells from C sending port cards simultaneously. According to said method the control channel links are used to relay up to C acknowledgements between at least one receiving port card and at least one sending port card. | 2008-10-09 |
20080247412 | Hybrid channel assignment method and router thereof - A hybrid channel assignment method comprising the steps of negotiating among routers to select one router to act as a central server; collecting, at the selected router, information on an entire network transmitted from the other routers, and assigning channels based upon the information on the entire network; and reassigning channels of respective routers based upon dynamically-changing traffic characteristics. The hybrid channel assignment method can assign channels using both centralized processing and distributed processing in order to ensure optimally correct channel assignment consistent with present traffic characteristics. This as a result can prevent network resources from being wasted and also increase network capacity, thereby optimizing effective use of the network resources. | 2008-10-09 |
20080247413 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus includes: a storage section that stores a packet; a copy section that creates one or more copies of the packet stored in the storage section; and a transmission section that transmits at least two among the copies created by the copy section and the packet stored in the storage section in a plurality of frames. | 2008-10-09 |
20080247414 | CLOCK STRETCHING IN AN ADAPTIVE TWO-WIRE BUS - Techniques for improving the quality or fidelity of a digital signal transmitted via a two-wire bus interconnect utilizing an open-terminal configuration at one or both end devices of the bus interconnect are disclosed. An intermediate two-wire bus is used to connect two open-terminal-based two-wire busses. A bus adapter device is utilized at each end of the intermediate two-wire bus, whereby the bus adapter device communicates signaling on the corresponding open-terminal-based two-wire bus using open-terminal ports and communicates signaling on the intermediate two-wire bus using push-pull ports. The bus adapter device can utilize control logic to implement a state machine or other function to control the interactions between the different two-wire buses. The bus adapter devices may be implemented as interchangeable integrated circuit devices that can change configuration based on connection, thereby permitting their implementation at either end of a bus transmission system. | 2008-10-09 |
20080247415 | Method for Indirect Access to a Support Interface for Memory-Mapped Resources to Reduce System Connectivity From Out-of-Band Support Processor - A method and apparatus are provided for a support interface for memory-mapped resources. A support processor sends a sequence of commands over and FSI interface to a memory-mapped support interface on a processor chip. The memory-mapped support interface updates memory, memory-mapped registers or memory-mapped resources. The interface uses fabric packet generation logic to generate a single command packet in a protocol for the coherency fabric which consists of an address, command and/or data. Fabric commands are converted to FSI protocol and forwarded to attached support chips to access the memory-mapped resource, and responses from the support chips are converted back to fabric response packets. Fabric snoop logic monitors the coherency fabric and decodes responses for packets previously sent by fabric packet generation logic. The fabric snoop logic updates status register and/or writes response data to a read data register. The system also reports any errors that are encountered. | 2008-10-09 |
20080247416 | CIRCUIT FOR TAPPING A LINE IN A NETWORK DIAGNOSTIC COMPONENT - The embodiments disclosed herein relate to a network diagnostic component and related circuit for tapping a line in the network diagnostic component. The network diagnostic component includes a first network port configured to connect with a first node, a second network port configured to connect with a second node and a connection line directly coupling the first network port to the second network port configured to transmit network traffic between the first and second networks port. The network diagnostic component further includes a tap circuit coupled to the connection line configured to obtain a portion of the network traffic transmitted between the first and second network ports via the connection line. | 2008-10-09 |
20080247417 | Method and Device for Transmitting Data Via a Transmission Link - The invention relates, inter alia, to a method in which, by reducing the spectral power density in an underfrequency range (UB) of a transmitting/receiving unit, the fact that the underfrequency range (UB) should not be used to send data is indirectly transmitted. This method is particularly suitable for xDSL processes. | 2008-10-09 |
20080247418 | Method and Device for Controlling Access to a Communications Network - According to the invention, in order to control the access of traffic streams (VS) to the communications network (KN), an available capacity (VK), placed at the disposal of an access node (ZK) for transferring traffic streams (VS) to said communications network (KN), is determined from an access node (ZK) of the communications network (KN), taking into account the total transfer capacity (G) of the communications network (KN). The available capacity (VS) is notably redetermined whenever the routing information (RI) of the access node (ZK) is modified. An access control of this type guarantees the quality of service required in a connectionless communications network. | 2008-10-09 |
20080247419 | Method and Apparatus for Adaptive Bandwidth Control With User Settings - A computer implemented method, apparatus, and computer usable program code to receive a user input defining settings at an application layer to form a set of received settings. An adaptive bandwidth control process is executed using the received settings to identify a transmission rate for transmitting data packets across a network. The data packets are transmitted across the network using the identified transmission rate. | 2008-10-09 |
20080247420 | System and Method for Monitoring Information Handling System Interfaces Through Cables Having Plural Links - A port width module operating in association with SAS controllers determines the operational state of communication across an SAS cable by comparing the number of links at opposing controllers that are capable of supporting communication with the number of links in DWord synchronization. For example, an information handling system capable of communication of four links at an SAS connector communicates in a normal state across two links where the opposing device is a switch that supports only two links at an SAS connector. An LED at the information handling system indicates normal operations with two links in DWord synchronization by receiving the port width of the opposing device, retrieving its own port width, and comparing the port widths with the number of links in DWord synchronization. | 2008-10-09 |
20080247421 | Service assembly architecture - A method for effecting communication between devices in a communications network, the method comprising managing a communications process control flow; providing a plurality of re-usable components of the process control flow in which each component comprises a process control activity between two of the devices; aggregating the plurality of re-usable components into a sequence of the communications process control flow; in which each re-usable component is arranged to process a data structure; in which the data structure is the same for each re-usable component of the communications process control flow. | 2008-10-09 |
20080247422 | Asynchronous Line Interface Rate Adaptation to the Physical Layer with Synchronous Lines at the Connection Layer - A method for adapting the rates of a certain number of asynchronous HDLC channels ( | 2008-10-09 |
20080247423 | SYSTEM AND METHOD FOR TRANSPORTING MULTIPLE CLIENT DATA SIGNALS VIA A SIGNAL SERVER SIGNAL - Systems and methods for conveying multiple low-bit-rate data streams over a data transport medium which is configured to transport data in a single, high-bit-rate data stream. In one embodiment, a plurality of low-bit-rate signals are received and a corresponding data rate is determined. Each of the signals is formatted in frames comprising a payload and overhead data. The high-bit-rate signal is also formatted in frames comprising a payload and overhead data, but the frames (including payload and overhead) contain more bits than those of the low-bit-rate frames. The payloads of the low-bit-rate frames are mapped into the payloads of the high-bit-rate frames. The overhead and timing data of the low-bit-rate frames are mapped into the unused portion of the overhead of the high-bit-rate frames. After the high-bit-rate signal is transported, the payload, overhead and timing data of each of the low-bit-rate signals is extracted, and the corresponding signals are reproduced. | 2008-10-09 |
20080247424 | FIBER LASERS - Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. | 2008-10-09 |
20080247425 | Q-switched microlaser apparatus and method for use - A monolithic passively Q switched microlaser includes an optically transparent heat conductive element bonded to a gain medium, which is in turn bonded to a saturable absorber, which may also be bonded to a second optically transparent heat conductive element. Only the gain medium and saturable absorber are disposed within the laser resonator. | 2008-10-09 |
20080247426 | Broad-Area Microlasers and Methods for Driving Them - A multi-mode microlaser and a method for driving a multi-mode broad-area microlaser such as a multi-mode VCSEL is described such that the multi-mode microlaser shows an unexpected Gaussian-like far-field intensity distribution. The driving conditions are in general determined such that a strong reduction of the degree of spatial coherence occurs. For square pulsed driving current, these conditions are determined by the pulse duration p | 2008-10-09 |
20080247427 | Optical systems for laser arrays - Surface emitting laser arrays with intra-cavity harmonic generation are coupled to an optical system that extracts harmonic light in both directions from an intra-cavity nonlinear optical material in such a way that the focusing properties of the light beams are matched. | 2008-10-09 |
20080247428 | EFFICIENT HARMONIC GENERATION AND FREQUENCY CONVERSION IN MULTI-MODE CAVITIES - A doubly-resonant cavity structure includes at least one cavity structures so as to allow total frequency conversion for second or third-harmonic generation using χ | 2008-10-09 |
20080247429 | Coherence reduction of diode lasers - The invention provides a method of reducing a time-averaged coherence of laser radiation for current-tunable lasers, and a laser apparatus realizing the method, by modulating the laser drive current using a modulation function optimized for obtaining a pre-determined time-averaged spectral profile of the laser radiation. In a preferred embodiment, the pre-determined time-averaged spectral profile has a substantially Gaussian shape. The method is described in reference to laser diodes. | 2008-10-09 |
20080247430 | Laser wavelength stabilization - In a coarse wavelength division multiplexing (CWDM) optical transmission system, a distributed feedback (DFB) laser is tuned so that the peak reflection of the grating overlaps with the gain range of the DFB laser. The diffraction grating is tuned so that the peak is positioned on the long wavelength end of the gain spectrum at a selected temperature. The optical transmission system operates in an environment having a wide temperature range (i.e., about −40° C. to about 85° C.). Heat is applied to the laser and as the laser temperature increases, the gain range overtakes the grating peak. When the gain range and the grating peak overlap at increased laser temperature, laser output is improved. | 2008-10-09 |
20080247431 | Optical Mount for Laser Rod - An optical mount for holding an optical element, such as a laser rod, in which two or more contact blocks are biased into contact with two faces of the optical element and with a base supporting the optical element. The optical mount maintains good thermal contact with the optical element to minimize thermal gradients. | 2008-10-09 |
20080247432 | Semiconductor Laser Equipment - This invention relates to a semiconductor laser apparatus having a structure to prevent corrosion in a refrigerant flow path of a heat sink and cool stably a semiconductor laser array over a long period. The semiconductor laser apparatus has a semiconductor laser stack, a refrigerant supplier, an insulating piping, and a refrigerant. The refrigerant supplier supplies the refrigerant to the semiconductor laser stack. The refrigerant is comprised of fluorocarbon. The insulating piping is an insulating piping with flexibility. An grounded conductive material is arranged inside the insulating piping. The conductive material operates to remove static electricity generated where the refrigerant flows inside the insulating piping. | 2008-10-09 |
20080247433 | NITRIDE SEMICONDUCTOR LASERS AND ITS MANUFACTURING METHOD - A nitride semiconductor laser which features low resistance and high reliability. A buried layer is formed by selective growth and the shape of a p-type cladding layer is inverted trapezoidal so that the resistance of the p-type cladding layer and that of a p-type contact layer are decreased. For long-term reliability of the laser, the buried layer is a high-resistance semi-insulating layer which suppresses increase in leak current. | 2008-10-09 |
20080247434 | SEMICONDUCTOR LIGHT-EMITTING DEVICE - A semiconductor light-emitting device capable of increasing the carrier concentration of a p-type cladding layer and improving light-emitting efficiency is provided. A semiconductor light-emitting device is made of a Group II-VI compound semiconductor, and the semiconductor light-emitting device includes an active layer between an n-type cladding layer and a p-type cladding layer, in which the active layer has a Type II superlattice structure, and the junctions between the active layer and the n-type cladding layer and between the active layer and the p-type cladding layer each have a Type I structure, and the p-type cladding layer includes tellurium (Te) as a Group VI element. | 2008-10-09 |
20080247435 | SEMICONDUCTOR LASER DIODE HAVING GRADED INTERLAYER - A semiconductor laser diode having a graded interlayer is provided. The semiconductor laser diode has the graded interlayer between an active layer composed of InGaN and an electron blocking layer (EBL) composed of AlGaN. The graded interlayer is composed of In | 2008-10-09 |
20080247436 | OPTOELECTRONIC DEVICE AND METHOD OF OPERATING OPTOELECTRONIC DEVICE - The invention provides an optoelectronic device combining a vertical cavity surface emitting laser (VCSEL) and a photodetector for monitoring the output power of the vertical cavity surface emitting laser. To improve the signal-to-noise ratio of the photodetector, a light deflector is interposed between the photodetector and the VCSEL. | 2008-10-09 |
20080247437 | TUNABLE LONG-WAVELENGTH VCSEL SYSTEM - A vertical cavity surface emitting laser system is provided including providing a epitaxially grown bottom spacer layer, an active layer on the epitaxially grown bottom spacer layer, a top spacer layer on the active layer, and etching a part of the epitaxially grown top spacer layer on a side opposite the active layer. | 2008-10-09 |
20080247438 | Laterally pumped solid-state laser gain-module - A gain-module for a laser resonator has an elongated gain-element located in an diffusely reflective cylindrical enclosure having an elongated entrance slit for admitting pump radiation. Pump radiation is supplied by two diode-laser arrays assemblies each including a fast-axis collimating lens. Propagation axes of the diode-laser array assemblies are at an angle to each other. The propagation axes extend through the entrance slit into the enclosure without being intercepted by the gain-element and with the gain-element being located between the propagation-axes. | 2008-10-09 |
20080247439 | Semiconductor Laser Device and Method for Fabrication Thereof - In a semiconductor laser device (LD | 2008-10-09 |
20080247440 | Long Length Electrodes - An embodiment disclosed herein includes a monolithic graphite electrode. The electrode has a main body having a length of more than 3050 mm. Another embodiment disclosed herein includes an electrode column comprising a plurality of monolithic graphite electrodes. The column has a length of more than 3050 mm of electrode per joint. A further embodiment discussed herein is the practice of increasing the length of the electrode to minimize the occurrence of an electrode joint in the electrode column for a given length. This practice will improve efficiencies for both electrode manufacturers as well as electric arc furnace operators. | 2008-10-09 |
20080247441 | Low Cost Multimode Calorimeter - A structure of calorimeter provides a calorimetric head ( | 2008-10-09 |
20080247442 | Method, Apparatus, and System for Modulating and Demodulating Signals Compatible with Multiple Receiver Types and Designed for Improved Receiver Performance - A method, apparatus, and system for modulating and demodulating signals compatible with multiple receiver types and designed for improved receiver performance. The invention includes the use of hybrid impulse radio (H-IR) ultra-wideband (UWB) with forward error correction coding, recursive modulation and other techniques designed to enable one transmitter to transmit a waveform capable of being demodulated concurrently by a coherent receiver, a differentially coherent receiver, and/or a non-coherent receiver. | 2008-10-09 |
20080247443 | Method and system for implementing a system acquisition function for use with a communication device - A system acquisition module and corresponding method for facilitating PN code searching which has a PN sequence generator configurable to generate a plurality of PN sequences. The module and method also includes computational units configurable to correlate each received signal sample of a plurality of received signal samples with a corresponding PN sequence of the plurality of PN sequences, and further configurable to provide other hardware resources. A number of computational units from the plurality of computational units are selectively configured to correlate the received signal samples with the PN sequences—the number depending upon availability of the plurality of computational units from providing the other hardware resources. In another embodiment, a communication device having a system acquisition function is provided which includes the system acquisition module and a receiver configured to receive signals, where a plurality of configurable computational units are selectively configurable to implement the PN sequence generator. | 2008-10-09 |
20080247444 | System and method for multi-source communications - A system and method of multi-source communications, including a source provider, a transmitter, a receiver, a summing device, a plurality of delay devices, and a switch. The source provider provides a signal including a first and second signal. The transmitter is in communication with the source provider and the receiver. The receiver is in communication with the transmitter. The summing device combines the first and second signals received by the receiver. The delay device delays at least one of the first and second signals. The switch forms a bypass, such that at least one of the first and second signals bypasses one of the plurality of delay devices. | 2008-10-09 |
20080247445 | ARCHITECTURE AND METHODS FOR COEXISTENCE OF WIRELESS RADIOS HAVING DIFFERING PROTOCOLS - Embodiments of systems and methods for the coexistence of wireless radios having differing protocols are generally described herein. Other embodiments may be described and claimed. In some embodiments systems and methods for synchronizing clocks between two radios, and using a signal to notify one of the radios to refrain from transmitting for a timeperiod are described. | 2008-10-09 |
20080247446 | Determining a channel matrix by measuring interference - An apparatus includes a transmitter configured to transmit symbols to one or more receivers via a plurality of communication channels of a physical communication link. The transmitter is configured to estimate a phase of one or more off-diagonal elements of a channel matrix for the physical communication link based on values of signal-to-interference-plus-noise ratios at the one or more receivers. | 2008-10-09 |
20080247447 | Apparatus and method for transmitting digital data over various communication media - A system is described for transmitting a communication signal between power lines. The system includes: a transmitter which outputs an OFDM or an FM-OFDM signal at a radio frequency greater than 200 MHz; a first power line which receives the OFDM or the FM-OFDM signal from the transmitter and radiates the OFDM or the FM-OFDM signal from a conductor of the first power line; a second power line which wirelessly receives, by a conductor of the second power line, the OFDM or the FM-OFDM signal radiated from the first power line, and a receiver connected to the second power line which receives the OFDM or the FM-OFDM signal from the second power line. | 2008-10-09 |
20080247448 | METHOD AND APPARATUS FOR EVALUATING A TIME VARYING SIGNAL - A method for evaluating a received signal varying over an interval includes: (a) obtaining a data sample and a sample time; (b) determining whether the sample exceeds a previous exceeded extremum of the signal; (c) if the sample does not exceed an exceeded extremum, storing the sample; (d) if the sample exceeds the an exceeded extremum, in no particular order: (1) extracting and storing cycle information involving the exceeded extremum; and (2) replacing an earliest exceeded extremum with the sample; (e) outputting first selected data from a storage unit; (f) determining whether the interval has completed; (g) if the interval has not completed, repeating steps (a) through (f); (h) if the interval has completed, checking whether an output buffer is empty; (i) if the buffer is not empty, outputting second selected data from the buffer; 0) if the buffer is empty, terminating the method. | 2008-10-09 |
20080247449 | CHECKING CIRCUIT OF SENDING CONTROL - The object of the invention is to checking the timing easily and in shorter time, and reduce the power consumption without any influence on other circuits functions. The solutions are as follows. By the “1” detecting counter, the “0” detecting counter, and the data validity judging circuit in the checking circuit of transmission control included in the DSRC baseband circuit of the transmission apparatus, it becomes the possible to judge the data validity of the transmission data TX_DI | 2008-10-09 |
20080247450 | Method and System For Communication in a Wireless Network - The present application discloses a number of inventions directed to method(s), apparatus and/or networks and systems adapted to track time varying channels, adapted to synchronise packets arriving at a receiver, adapted to correlate a received signal, adapted to manage digital resources, adapted to receive a signal and/or adapted to enable communication in a wireless packet based communications network. | 2008-10-09 |
20080247451 | MEASUREMENT APPARATUS, MEASUREMENT METHOD, TEST APPARATUS, ELECTRONIC DEVICE, AND RECORDING MEDIUM - Provided is a measurement apparatus that measures jitter occurring in a data converter, including a measurement signal generating section that generates a measurement signal having a substantially constant period; a jitter injecting section that injects jitter of a deterministic signal having a predetermined jitter period into the measurement signal, and that inputs the resulting signal to the data converter; a jitter measuring section that measures a jitter string of a digital signal output by the data converter; and an extracting section that extracts data of the jitter string according to the jitter period of the jitter injected by the jitter injecting section. | 2008-10-09 |
20080247452 | ADAPTIVE EQUALIZER FOR USE WITH CLOCK AND DATA RECOVERY CIRCUIT OF SERIAL COMMUNICATION LINK - An adaptive equalizer system for use in a serial communication link uses timing information generated by a phase detector of a clock and data recovery circuit of the serial communication link and a frequency pattern of the recovered data to determine whether the data received over the serial communication link is over-equalized or under-equalized. The equalizer strength of the adaptive equalizer system is adjusted based on such determination. | 2008-10-09 |
20080247453 | Current mode logic multi-tap feed-forward equalizer - A system and method are provided for feed-forward equalization (FFE) in a transmission system. The method accepts a serial stream of input digital data signals. For each input data signal, a temporal sequence of signals is generated. Each of the signals in the temporal sequence is selectively shaped. Shaping map include varying the degree of amplification, modifying the slew rate, or varying the time delay. The contributions of the selectively shaped signals in the temporal sequence are then selectively weighted, and a summed output signal is transmitted. | 2008-10-09 |
20080247454 | Video signal timing adjustment - A method is disclosed herein, which may include receiving a video signal after a computer system is reset, automatically determining that an actual timing relation between the active video data and the synchronization pulse data deviates from the nominal relation by more than a tolerance value, and adjusting the actual timing relation to fall within the tolerance value. The video signal may include active video data and synchronization pulse data. A video format may define a nominal timing relation between the active video data and the synchronization pulse data. | 2008-10-09 |
20080247455 | Video signal processing apparatus to generate both progressive and interlace video signals - A video signal processing apparatus includes a main picture processor, an interlace recovering module and a video encoder. The main picture processor produces corresponding main picture signals based on video signals from a memory. The main picture signals are converted to progressive scan signals through a predetermined video signals processing. The interlace recovering module receives the progressive scan signals, retrieves the even portion and the odd portion of the progressive video signals alternately, and generates a set of interlace-scan signals. The video encoder receives both the progressive scan signals and the interlace scan signals and generates a set of progressive video signals and a set of interlace video signals to corresponding video display apparatuses. Thereupon, the video reproduction system can simultaneously provide both the progressive video signals and interlace video signals to the video display apparatuses. | 2008-10-09 |
20080247456 | System and Method For Providing Reduced Bandwidth Video in an Mhp or Ocap Broadcast System - A system and method provides reduced bandwidth video in an MHP or OCAP broadcast system ( | 2008-10-09 |
20080247457 | Self-configuring IP video router - The embodiments described in this disclosure address the above issues and others. Accordingly, a self-configuring IP video router provides a plug-and-play transport interface between two LANs, one of which is the host to multiple IP video cameras or servers. | 2008-10-09 |
20080247458 | SYSTEM AND METHOD TO COMPOSE A SLIDE SHOW - A method of composing a multimedia slide show. In a preferred embodiment, the method comprises the steps of: selecting a plurality of digital images; encoding each of the plurality of digital images to generate a normal resolution image portion and a high resolution image portion; multiplexing each corresponding normal and high resolution image portion to generate a single high resolution still image; determining a time parameter for each of the high resolution still images; selecting an audio portion for at least one of the plurality of digital images; concatenating the plurality of high resolution still images to generate a video bitstream; generating an audio bitstream by encoding the audio portion; and multiplexing the video bitstream and audio bitstream to generate the multimedia slide show. | 2008-10-09 |
20080247459 | Method and System for Providing Content Adaptive Binary Arithmetic Coder Output Bit Counting - A process may be utilized for encoding MBs. The process records a plurality of CABAC weight values for a first MB. The first MB resides in a first edge of a first frame in a plurality of images. Further, the process encodes the first MB with the plurality of CABAC weight values. In addition, the process initializes a second frame in the plurality of the images with the plurality of CABAC weight values. Finally, the process encodes a second MB with the plurality of CABAC weight values. The second MB resides in a second edge of a second frame in the plurality of images. | 2008-10-09 |
20080247460 | Method and Apparatus For Scalable Video Adaption Using Adaption Operators For Scalable Video - An apparatus for and method of adapting a bitstream to which scalable video coding (SVC) technology is applied are provided. The apparatus for adapting a bitstream includes: an Adaptation QoS information extraction unit extracting SVC adaptation operators, and relationships between the SVC adaptation operators and the usage environment information of a terminal from the Adaptation QoS information on the bitstream to which SVC technology is applied; an Adaptation Decision Taking Engine(ADTE) unit determining the SVC adaptation operators corresponding to the usage environment of the terminal receiving the transmitted bitstream among the SVC adaptation operators; and a SVC bitstream extraction unit extracting the bitstream based on the determined SVC adaptation operator. According to the apparatus and method, scalable video can be efficiently provided for changing network environments and multimedia usage environments, through adaptation of scalable video streams using an adaptation operator suggested in Classification Scheme (AQoSJDS). | 2008-10-09 |
20080247461 | Image Encoding Device - In an image encoding device ( | 2008-10-09 |
20080247462 | Flowfield motion compensation for video compression - Motion compensation for video compression using a “flowfield” comprising a per-pixel field of motion vectors and confidence values. Flowfields can be quantized transform coded for compression motion compensation. Encoding-only flowfields match with one or more previous and subsequent frames to determine both modulation for resolution-enhancing layers, as well as sharp/soft filtering for an original image, a base layer, and for resolution-enhancing layers. Encoding-only flowfields can be used with various codec types by using the flowfield motion vector length and confidence to drive sharp/soft filters to improve efficiency via in-place noise reduction. Pixels may be displaced using encoding-only flowfields to nearby frames, and weighted for efficient noise reduction. Encoding-only flowfields are discarded after their use in encoding, and therefore do not require coded bits. Encoding-only flowfields can be applied to all frame types, including intra, predicted, forward flowfield-predicted “F” frames, and multiply-predicted “M” frame types, and improve intra coding efficiency. | 2008-10-09 |
20080247463 | LONG TERM REFERENCE FRAME MANAGEMENT WITH ERROR FEEDBACK FOR COMPRESSED VIDEO COMMUNICATION - An apparatus, software encoded in tangible media, and a method at an encoder. The method includes sending compressed video data including a reference frame message to create a long term reference frame to a plurality of decoders at one or more destination points, receiving feedback from the decoders indicative of whether or not the decoders successfully received the reference frame message, and in the case that the received feedback is such that at least one of the decoders did not successfully receive the reference frame message or does not have the indicated recent frame, repeating sending a reference frame message to create the long term reference frame. Using the method can replaces I-frame error recovery with long term reference frames, even in the case where the reference frame management messages are lost to at least one decoder. | 2008-10-09 |
20080247464 | METHOD AND APPARATUS FOR ENCODING AND DECODING BASED ON INTRA PREDICTION USING DIFFERENTIAL EQUATION - Provided are a method and apparatus for encoding and decoding an image based on intra prediction. The image encoding method comprises determining boundary values of a differential equation that is to be used to intra-predict a current block based on pixel values of pre-encoded pixels adjacent to the current block, predicting the current block using the differential equation and the boundary values and encoding the current block based on the prediction block of the current block. | 2008-10-09 |
20080247465 | Method and System for Mapping Motion Vectors between Different Size Blocks - A method and system for mapping motion vectors. A weight is determined for each motion vector of a set of input blocks of an input bitstream. Then, the set of motion vectors are mapped to an output motion vector of an output block of an output bitstream according to the set of weights. | 2008-10-09 |
20080247466 | Method and system for skip mode detection - A method for detecting a skip mode during encoding of a video sequence is provided. The video sequence includes a plurality of video frames, wherein each of the plurality of video frames includes a plurality of macroblocks. Each of the plurality of macroblocks includes a plurality of pixels. The method includes calculating a motion vector for a macroblock selected from the plurality of macroblocks, comparing the calculated motion vector of the macroblock with a predetermined skip motion vector of the macroblock, calculating a sum of absolute differences value for the skip motion vector of the macroblock, and selecting a skip mode for the macroblock. The skip mode is selected based on the calculated sum of absolute differences value and a predetermined threshold, wherein the predetermined threshold is based on a quantization parameter value of the macroblock. | 2008-10-09 |
20080247467 | Adaptive interpolation filters for video coding - In digital video image encoding and decoding, a filter type is selected based on symmetrical properties of the images and coefficient values of an interpolation filter are calculated based on the selected filter type. Coefficient values, filter tap-length and selected filter-type are provided in the encoded video data. Coefficient values are also calculated based on a prediction signal representative of the different between a video frame and a reference image. The prediction signal is calculated from the reference image based on a predefined base filter and motion estimation performed on the video frame. The predefined base filter has fixed coefficient values. Coefficient values are selected from interpolation of pixel values in a selected image segment in the video frame. Symmetry properties of images can be a vertical symmetry, a horizontal symmetry and a combination thereof, so that only a portion of the filter coefficients are coded. | 2008-10-09 |
20080247468 | METHOD AND SYSTEM FOR PERFORMING RATE CONTROL ADAPTED TO CHANNEL CONDITIONS - A method and system for determining in real time the instantaneous output rate of a low delay video frame encoder/application for encoding a video frame to be transmitted are disclosed. The video frame encoder provides its output for wireless transmission over a telecommunication channel. In one aspect, a method comprises providing an estimate of the instantaneous channel conditions under which the video frame will be transmitted. The method further comprises determining the instantaneous output rate by selecting a high output rate when the channel conditions considered acceptable and selecting a low output rate when the channel conditions are considered unacceptable. | 2008-10-09 |
20080247469 | METHOD AND DEVICE FOR TRACKING ERROR PROPAGATION AND REFRESHING A VIDEO STREAM - A method and device for tracking error propagation and refreshing a video stream is provided. The proposed subject matter comprises of an error propagation tracking method that works in the sub-sampled domain to reduce computational cycles and memory bandwidth. Further, the tracking based update of the error propagation metric is done differently for static and non-static regions to avoid unnecessary refresh of static areas. Through suitable thresholding of the metric at a macroblock (MB) level, a set of refresh MBs are selected for each frame. These refresh MBs are coded either as an intra MB or as an inter MB that is predicted from one or more reliable reference frames (—frames that are known to be available at the decoder with negligible errors—). Such inter coding of refresh MBs improves the compression efficiency when compared to pure intra coding of refresh MBs. Further, variants to the threshold selection are presented that result in temporally uniform distribution of the number of refresh MBs and a strict refresh scheme wherein all MBs are guaranteed to be with negligible errors following a packet loss within a committed refresh period. In addition, to using the error propagation metric, spatial connectivity to already chosen refresh MBs is used in the selection of additional refresh MBs within a frame and across frames; this reduces the rate of error propagation due to part of a macroblock predicting from older, erroneous neighboring MBs and in turn requiring more refresh MBs on the average per frame. | 2008-10-09 |
20080247470 | Unequal hierarchical communications modulation method - Hierarchical modulation preferably uses a 16-ary quadrature amplitude modulation (QAM) modulator with a convolutional encoder that combine to effectively provide unequal protection to two different segments of streaming input data, with improved power efficiency with the same bandwidth efficiency, by encoding the first segment as coded data as LSBs as the second segment remains uncoded as uncoded MSBs, with the MSBs used for QAM constellation modest reliability interquadrant demodulation and detection, and with the LSBs used for low reliability intraquadrant detection, but with the LSBs subject to convolutional encoding and decoding rendering the LSBs with high reliability detection, such that, the two segments have unequal coding and modulation for providing unequal levels of reliability detection. | 2008-10-09 |
20080247471 | Low Power, Wavelet-Based Spike Detector - A multi-scale spike detector for performing multi-resolution spike detections of a signal is provided. The spike detector includes a gamma filter having cascaded low-pass filters. The cascaded filters collectively provide different cutoff frequencies, each of the filters having a respective output. One of the filters has an input, at which the signal is received. The spike detector further includes combining circuitry that combines at least some of the respective outputs of the cascaded filters. The differences formed from this combining provide a waveform representation of the input signal. The waveform representation consists essentially of spikes that occur in the signal. | 2008-10-09 |
20080247472 | INTERFERENCE ESTIMATION CIRCUIT AND METHOD - The present application provides an interference estimation circuit which includes a signal generator, a first symbol extractor and a first mixer. The signal generator generates an orthogonal signal orthogonal to partial symbols of a plurality of pilot signals. The first symbol extractor extracts partial symbols of a first decoded signal decoded from a received signal wherein the first decoded signal contains one of the plurality of pilot signals, and includes an input node for receiving the first decoded signal and an output node for outputting a first extracted signal. The first extracted signal is substantially orthogonal to the orthogonal signal. The first mixer is coupled to the signal generator for receiving the orthogonal signal and to the first symbol extractor for receiving the first extracted signal, and outputs a first mixed signal of the orthogonal signal and the first extracted signal for interference estimation. | 2008-10-09 |
20080247473 | MULTIPLE SUB-BANDS TDS-OFDM TRANSMISSION SCHEME - An OFDM system is provided. The system comprises: a single symbol among a series of symbols comprising; and a series PN sequences interposed between the series of symbols, with at least one PN sequence comprising a set of PN sub-sequences, wherein each PN sub-sequence is respectively associated with an ordered sub-central frequency within the single symbol. | 2008-10-09 |
20080247474 | Apparatus and Method For Receiving Signals in Multi-Carrier Multi-Carrier Multiple Access Systems - A method for receiving signals in a multi-carrier multiple access system is disclosed. The method comprises receiving signals from at least one base station wherein each signal has a base station identifier, processing the signals to identify each base station by using the base station identifier, performing a channel estimation using the processed signals, combining the processed signals using an information obtained from the channel estimation and decoding the combined signals. Also, an apparatus for receiving signals in a multi-carrier multiple access system comprises a serial-to-parallel converter for converting a serial signal including a base station identifier from at least one base station to parallel signals, a Fast Fourier transformer for transforming the parallel signals, a parallel-to-serial converter for converting the parallel signals to a serial signal, a despreading processor for despreading frequency domain signals using the base station identifier from at least one base station, a channel estimiator for compensating a channel variation between the at least one base station and a mobile station, a signal combiner for combining signals from base stations and a decoder for decoding the combined signal. | 2008-10-09 |
20080247475 | METHOD FOR CODEBOOK DESIGN AND BEAMFORMING VECTOR SELECTION IN PER-USER UNITARY RATE CONTROL (PU2RC) SYSTEM - A base station includes a storage unit to store a codebook, wherein the codebook includes a plurality of matrices; a control unit to perform beamforming using the codebook to generate a signal; and a multi-antenna to transmit the signal. For all of the plurality of matrices, all column vectors of a same matrix of the plurality of matrices are orthogonal to each other. For all columns of the plurality of matrices, all column vectors of a same column of all of the plurality of matrices satisfy a Grassmannian line packing (GLP) criterion. | 2008-10-09 |
20080247476 | Method and Synchronizer for Fine Ofdm Symbol Synchronization and Method/Receiver for the Reception of Ofdm Symbols - A fine OFDM symbol synchronization method comprising the steps of: estimating (in | 2008-10-09 |
20080247477 | Block Scrambling for Orthogonal Frequency Division Multiple Access - A method of transmitting signals in a communication system over at least two time periods including generating a base signal comprising of at least two samples in each time period, selecting a scrambling sequence of length equal to or greater than the number of time periods, scaling all samples in said signal in a time period with one element of said scrambling sequence and transmitting the scaled signal in said time period. Different elements of the scrambling sequence are used to scale the base signal in different time periods. The signal in each time period is obtained by scaling a base signal. The scrambling sequence is preferably a pseudo-random sequence. The step of scaling all samples in said signal in a time period consists of multiplying all samples of said signal with an element of said scrambling sequence. | 2008-10-09 |
20080247478 | Orthogonal frequency division multiplexing communication system, multi-hop system, relay station, and spatially layered transmission mode - An apparatus and method for data transmission in an Orthogonal Frequency Division Multiplexing (OFDM) communication system are provided. An OFDM system includes a reference Relay Station (RS) and a cooperative relay station respectively for performing an Spatially Layered transmission Mode (SLM) process by modulating a phase and magnitude of a signal by using a predetermined modulation order suitable for the reference relay station to obtain a spatially-layered signal and for delivering the spatially-layered signal to a target Mobile Station (MS); a Base Station (BS) for selecting the reference relay station and the cooperative relay station among a plurality of relay stations; and an mobile station for detecting data through Maximum Likelihood (ML) detection in which a signal having the largest ML is detected by comparing the received spatially-layered signal with a signal which is converted through the SLM upon receiving the spatially-layered signal from the reference relay station and the cooperative relay station. | 2008-10-09 |
20080247479 | Pilot Scheme For A Mimo Communication System - The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols. | 2008-10-09 |
20080247480 | METHODS AND SYSTEMS FOR DETECTING A NARROW-BAND INTERFERER - Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference. | 2008-10-09 |
20080247481 | METHODS AND SYSTEMS FOR COMPUTING A MINIMUM VARIANCE UNBIASED ESTIMATOR OF CARRIER AND SAMPLING CLOCK FREQUENCY - Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference. | 2008-10-09 |
20080247482 | Ofdm Reception in Multi-Antenna Mode - A signal is received by P antennas. It includes frames having symbols occupying respective positions distributed along an axis of time and of frequency, a frame including M blocks having N reference symbols M groups of P weighting coefficients are determined, each one of the groups relating to one of the blocks emitted, with the coefficients of a group being associated to the blocks which are received on the P antennas and which correspond to the block emitted relating to the group. The coefficients are determined so as to increase via a threshold value, an error value for each block emitted, between the reference symbols of the block emitted, and the symbols obtained using the symbols received on each antenna at the positions of reference symbols corresponding to the block emitted and the associated coefficients. Then, weighting coefficients are obtained for the other symbols of the frame Finally, a composite signal is generated by summing up the symbols received respectively weighted by the associated weighting coefficients. | 2008-10-09 |
20080247483 | Space Time Coded Mb-Ofdm Uwb System - A system, apparatus, and method is provided for space-time coding a multiband OFDM UWB system that employs a scheme that transmits channel symbols corresponding to an incoming signal on the same sub-carrier ( | 2008-10-09 |
20080247484 | METHOD FOR DATA COMMUNICATION VIA A VOICE CHANNEL OF A WIRELESS COMMUNICATION NETWORK USING CONTINUOUS SIGNAL MODULATION - A system and method for data communication over a cellular communications network that allows the transmission of digital data over a voice channel using a vocoder that monitors parameters of a Levinson Durbin recursion and then uses full rate CELP if the monitored prediction error falls to below a predetermined threshold within a pre-selected number of iterations of the recursion. The system and method encode digital data to be transmitted using a continuous signal modulation technique at a selected bit rate and one or more frequencies that are selected such that the resulting modulated carrier signal is processed by the vocoder using full rate CELP as a result of the monitored prediction error. | 2008-10-09 |
20080247485 | Transmitting Apparatus, Receiving Apparatus and Transmitting/Receiving System for Digital Data - Disclosed is a transmitting apparatus for transmitting digital data. The transmitting apparatus includes storage unit for storing a digital data delay due to digital processing inside the transmitting apparatus; and delay information transmitting unit for transmitting delay information indicating the delay stored in the storage unit. | 2008-10-09 |
20080247486 | Ultra wideband communication method with low noise pulse formation - An ultra-wide band (UWB) waveform encoding method is provided. The method includes receiving a data stream; generating a first encoder signal and a second encoder signal such that if the first and second encoder signals were mixed, the mixing would return a representation of the data stream; generating a sequence of pulses; mixing the first encoder signal with at least a portion of the sequence of pulses, to produce a mixing result; and mixing the second encoder signal with the mixing result, to produce a sequence of ultra wideband wavelets encoded in accordance with the data stream. | 2008-10-09 |
20080247487 | Dynamic crest factor reduction system - A system and method for performing digital crest factor reduction. In one embodiment, the method is devised to suppress the signal amplitude to maintain a low signal peak to average ratio (PAR), while maintaining a desirable Error Vector Magnitude (EVM). This technique may be designed to operate in highly dynamic signal conditions. | 2008-10-09 |
20080247488 | UPLINK MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) AND COOPERATIVE MIMO TRANSMISSIONS - A method is provided for MIMO uplink communications between a base station and a wireless station with more than two antennae. The method includes: (a) negotiating between the base station and the wireless station uplink MIMO/cooperative MIMO capabilities, using a message exchange protocol in which a message exchanged comprises a field for specifying uplink MIMO/cooperative MIMO capabilities; (b) the base station receiving a request from the wireless station for data transmission; (c) the base station sending the wireless station an allocated resource and an uplink MIMO/cooperative MIMO method for uplink transmission; (e) the wireless station mapping data symbols to the allocated resource with proper pilot pattern; and (f) the base station detecting the data symbols from the channel. | 2008-10-09 |
20080247489 | APPARATUS AND METHOD FOR SUPPORTING DISTORTIONLESS VECTOR PERTURBATION IN MULTIPLE ANTENNA SYSTEM - An apparatus and method for supporting distortionless vector perturbation in a Multi-Input Multi-Output (MIMO) system are provided. The apparatus includes a transmitter for supporting distortionless vector perturbation in a MIMO system. The transmitter includes a label inserter for generating a label and for inserting the label into a user information bit, a scrambler for scrambling the user information bit inserted with the label and for generating N independent candidate sequences, a modulator for modulating the N independent candidate sequences according to a modulation scheme and a vector perturbation unit for adding a limited offset vector so that the modulated symbols are mapped to a constellation point in a feasible region. The apparatus and method provide vector perturbation with improved performance and reduced computational complexity. | 2008-10-09 |
20080247490 | Receiver For Amplitude-Modulated Signals - In a receiver, a synchronization circuit (MIX | 2008-10-09 |
20080247491 | BASEBAND TIME-DOMAIN COMMUNICATIONS SYSTEM - A communications system redness downconverter inaccuracies in time-domain measurements or samples of received microwave communications I and Q complex signals by converting received signal to baseband taking measurements or samples of the I and Q waveforms at differing phase shifts of a demodulating carrier signal for a local oscillator or carrier tracking loop used during downconversion so that I and Q imbalances may be detected and removed by lowpass equivalent averaging for improved characterization of downconverters or for improved signal reception. In the preferred form, the phase shifts are 0 and π/2 for a conventional measurement, and then at θ, and θ+π/2, with θ=π/4+mπ/2 for an integer m for the second measurement where I and Q imbalances and baseband monlinearities are indicated by differences between the two measured or sampled signals, where θ provides for optimum error detection for reducing the errors by averaging the measurements. | 2008-10-09 |
20080247492 | Signal Receiving Circuit and Signal Input Detection Circuit - In a signal receiving circuit including a plurality of input channels, there are provided N input detection circuits | 2008-10-09 |
20080247493 | METHODS, APPARATUS, AND SYSTEMS FOR DETERMINING 1T STATE METRIC DIFFERENCES IN AN nT IMPLEMENTATION OF A VITERBI DECODER - Methods, apparatus, and systems for generating bit-wise reliability information using a soft output Viterbi algorithm (“SOVA”) in an nT Viterbi decoder implementation devoid of 1T metric information. At each nT clock pulse 1T equivalent metric values are determined from the current nT metric information. 1T equivalent metric information is determined as values that sum to the corresponding nT metric information. Subtraction is then used to determine state metric difference information from the 1T equivalent metric values. The state metric difference information may then be used to estimate log likelihood ratio information for use in the SOVA algorithm to determine bit-wise reliability information. | 2008-10-09 |
20080247494 | Wireless Receiver For Sorting Packets - A wireless receiver that sorts packets including a packet detector, multiple correlators, and multiple packet processors. Each correlator correlates a received signal according to packet type. Each packet processor processes the received signal according to packet type. A signal power detector may be provided to initially qualify the received signal as containing a packet, and the correlators determine whether a packet is present. The correlators may be configured for sequential or simultaneous correlation. For the simultaneous correlator configuration, a correlation monitor is provided to monitor correlation results to determine if the received signal contains a packet, and if so, to determine packet type. A low SNR packet detector may be provided which correlates the received signal to detect weak packet signals. The signal power detector may be omitted, where the correlators simultaneously monitor the received signal while a correlation monitor continuously monitors correlation results for packet detection. | 2008-10-09 |
20080247495 | MULTI-SYSTEM SIGNAL RECEIVING DEVICE AND METHOD THEREOF - A receiving device includes: a first signal processor, for receiving a radio frequency signal, and converting the radio frequency signal to generate a first signal, where the radio frequency signal includes a plurality of frames; a second signal processor, coupled to the first signal processor, for performing a Fourier transform operation on the first signal according to a synchronization signal to generate an output signal; a first filter, coupled to the first signal processor, for filtering the first signal to generate a second signal; and a synchronization detection circuit, coupled to the first filter, for detecting the second signal to generate the synchronization signal. The first signal includes a channel signal and at least a portion of neighboring channel signals from neighboring channels, and the output signal corresponds to the channel signal. | 2008-10-09 |
20080247496 | Early HSS Rx Data Sampling - In a method for reading data from a serial data source in a parallel format, data from the serial data source is deserialized by placing a plurality of predefined units of data onto a parallel bus and asserting a deserialization clock when each of the plurality of predefined units is valid on the parallel bus. A delayed clock pulse is generated a predetermined amount of time after each assertion of the deserialization clock. Each delayed pulse is repeated so as to generate an end point repeated clock pulse corresponding to each delayed pulse wherein the predetermined amount of time is an amount of time that ensures that each predefined unit of data on the parallel bus is valid when each end point repeated clock pulse is asserted. | 2008-10-09 |
20080247497 | Clock distribution for 10GBase-T analog front end - A 10GBASE-T clocking method that limits EMI and increases SNR, while reducing power and conserving chip space is provided. The method includes simultaneous clocking of transmitters in an analog front end of a 10 gigabit Ethernet. The method includes providing at least two channels to a 10GBase-T analog front end, where the channel has at least a transmitter port and a receiver port, and providing at least two phase interpreters to the analog front end, where each phase interpreter is dedicated to one receiver port. A central clock generator is disposed to distribute a transmit clock to the phase interpreters and to the transmitter ports, where the transmit clock is further provided to the receiver ports from the phase interpreters. Any clock delay between the clock generator and each channel is balanced and clock phases between the channels are matched. | 2008-10-09 |
20080247498 | Methods and apparatuses for operating and repairing nuclear reactors - Method of repairing nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: removing a damaged section of one of the one or more submerged lines; and replacing the damaged section of the one of the one or more submerged lines without welding. Methods of operating nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: shutting down the nuclear reactor; repairing damage to at least one of the one or more submerged lines without welding; and starting up the nuclear reactor. Methods of operating nuclear reactors that include one or more submerged lines welded to one or more support brackets may include: cooling down the nuclear reactor; repairing damage to at least one of the one or more submerged lines without welding; and heating up the nuclear reactor. | 2008-10-09 |
20080247499 | Natural Circulation Boiling Water Reactor And Handling Method Thereof - A handling method for a natural circulation boiling water reactor having a chimney having cylindrical chimney shell disposed above a core in a reactor pressure vessel, a plurality of square tubes disposed in the chimney shell, and a grid support plate with grid holes supporting and in communication with a lower end portion of the square tubes so that adjacent square tubes are disposed at an interval which exceeds the width of one square tube between them. The method includes steps shifting predetermined ones of the square tubes to the interval between the square tubes, and performing maintenance and inspection of members around a core via the grid holes which appear at positions from which the predetermined square tubes are taken out due to the shift of the predetermined square tubes. | 2008-10-09 |
20080247500 | If Counting Method - In order to provide an IF counting method for realizing an IF counter with a smaller circuit configuration, an IF counter comprises a countdown IF counting unit | 2008-10-09 |