| 36th week of 2009 patent applcation highlights part 26 |
| Patent application number | Title | Published |
|---|
| 20090219939 | Transporting Packets - A method and network node for transporting IP packets in an IP network. The IP packets are received at a first network node, which separates the packets into a plurality of streams. The packets of each stream share an IP header in common, which denotes a second network node as a destination. The first and second nodes negotiate a connection on which packet multiplexing is available. The first node then merges packets from separate streams and sends a merged packet to the second node. | 2009-09-03 |
| 20090219940 | System and Method for Providing Throttling, Prioritization and Traffic Shaping During Request Processing via a Budget Service - A network gateway application is described that provides throttling, prioritization and traffic shaping for incoming requests from client applications. A request is received by a plug-in manager component of the gateway application. The plug-in manager can then invoke the budget service in order to determine a current available budget for the request. The budget can be computed according to a service level agreement for the service provider, application or network node. The requests can be of high or low priority. If the budget is greater than a specified priority threshold value, the low priority requests can be denied, while the high priority requests can be processed as long as there is some available budget left. If the budget for the request has reached the restricted level, the request can be denied and optionally enqueued to a traffic shaping queue to be processed at a later time. | 2009-09-03 |
| 20090219941 | SELECTIVE NODE TRACKING - A list of nodes is segmented into one or more segments, each segment having a node limit and a segment criteria, attributes associated with a first node are identified, a determination is made whether to add the first node to a particular segment of the node list based on the node limit and the attributes of the first node, nodes are ranked nodes in the particular segment, and a determination is made whether to remove a candidate node from the particular segment based on the node limit. | 2009-09-03 |
| 20090219942 | Transmission of Data Packets of Different Priority Levels Using Pre-Emption - A method for transmitting data packets of at least two different priority levels via one or more bearer channels is described. The method comprises the steps of fragmenting a data packet into a plurality of corresponding code words, each code word comprising a sync code, with the sync code being adapted for indicating a priority level of the corresponding data packet, and of transmitting the code words via the one or more bearer channels. In case high priority code words corresponding to a high priority data packet arrive during transmission of low priority code words corresponding to a low priority data packet, the following steps are performed: interrupting transmission of low priority code words, transmitting the high priority code words corresponding to the high priority data packet, and resuming the transmission of the low priority code words via the one or more bearer channels. | 2009-09-03 |
| 20090219943 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSOR, SERVER, INFORMATION PROCESSING METHOD AND PROGRAM - An information processor (1) comprises: a history packet transmitter (11) for transmitting a history packet; a request packet transmitter (12) for transmitting a request packet requesting transmission of a return packet; a packet transmission controller (13) for controlling transmission of a request packet by using a binary search method; a return packet receiver (14) for receiving a return packet transmitted from a server (3); and a port keeping time detector (15) for detecting the port keeping time of a communication processor (2) based on reception of a return packet by the return packet receiver (14). The server (3) includes: a request packet receiver (31) for receiving a request packet; and a return packet transmitter (32) for transmitting a return packet to a port of the communication processor (2) where a history packet passed when the request packet receiver (31) received a request packet. This configuration provides an information processing system for detecting the port keeping time of the communication processor. | 2009-09-03 |
| 20090219944 | METHODS AND DEVICES FOR ALLOCATING FREQUENCY RANGES - A method of allocating frequency ranges to at least one communication device is provided. The method comprises determining available frequency ranges within a plurality of frequency ranges, combining the available frequency ranges to at least one combined logical frequency range, and allocating the at least one combined logical frequency range to the at least one communication device. | 2009-09-03 |
| 20090219945 | Combined join and state transfer - A method and apparatus for processing messages is described. In one embodiment, an application programming interface provides for a flush protocol to force members of a group to send all of their pending messages prior to a predetermined event. A client sends a request to a coordinator of the group to join the group and to transfer a state of the group to the client. The application programming interface performs a single flush operation on the group in response to the request. | 2009-09-03 |
| 20090219946 | SYSTEM AND METHOD FOR RESOURCE ADMISSION AND CONTROL - System and method for resource admission and control is disclosed. The system for resource admission and control includes an interface unit for application function unit configured to receive service request sent from the application function unit; a policy decision function unit configured to identify the type of an access network according to the service request received by the interface unit for the application function unit and select corresponding service logic for resource admission and control according to the identified type of access network. According to the technical solutions, no matter the request for resource is made to a fixed access network defined in TISPAN, or to a wireless access network defined in the 3GPP, the policy decision function unit xPDF may identify the type of the access network and select corresponding service logic to perform resource admission and control. The xPDF conceals the details of the access network from the AF such that the solution for network construction can be simplified and the system maintenance may become simple and convenient. | 2009-09-03 |
| 20090219947 | Communication device, communication method, and data structure - A communication device communicates by reserving a Medium Access Slot (MAS) based on WiMedia_Alliance. The communication device includes a control part that generates negotiation request information, the negotiation request information requesting a reservation change so that an own device uses a MAS having been reserved by other communication device, and a host controller that sends the negotiation request information to the other communication device and receives a response accommodating the reservation change from the other communication device. After receiving the response, the control part sets a MAS reserved by the other communication device to as a MAS used by the own device. | 2009-09-03 |
| 20090219948 | CONNECTION ADAPTER FOR COMMUNICATION DEVICE - When a connection adapter | 2009-09-03 |
| 20090219949 | CONNECTION ADAPTER FOR COMMUNICATION DEVICE - A connection adapter | 2009-09-03 |
| 20090219950 | CONNECTION ADAPTER FOR COMMUNICATION DEVICE - A communication equipment connection adapter | 2009-09-03 |
| 20090219951 | Apparatus and methed for constructing a data unit that includes a buffer status report - An apparatus and method for constructing a data unit that includes a buffer status report (BSR) such that when BSR triggering is performed, the size(s) of the necessary sub-header(s) are also to be considered together in addition to the BSR size. There is a checking unit that checks whether any padding region is available in a MAC PDU that was constructed, a comparing unit that compares the number of padding bits with the size of a buffer status report (BSR) plus its sub-header, and a processing unit that cooperates with the checking unit and the comparing unit to trigger a buffer status report (BSR) procedure if the number of padding bits is larger than the size of the BSR plus its sub-header, including the BSR and its sub-header in the MAC PDU, and setting an LCID in the sub-header to indicate a BSR is included, the BSR having been triggered due to padding. Using such apparatus allows the sub-header(s) to be inserted (included) into the MAC PDU (or transport block (TB) or other data unit). | 2009-09-03 |
| 20090219952 | Wireless terminal baseband processor high speed turbo decoding module supporting MAC header splitting - A baseband processing module for use within a Radio Frequency (RF) transceiver includes a downlink/uplink interface, TX processing components, a processor, memory, RX processing components, and a turbo decoding module. The RX processing components receive a baseband RX signal from the RF front end, produce a set of IR samples from the baseband RX signal, and transfer the set of IR samples to the memory. The turbo decoding module receives at least one set of IR samples from the memory, forms a turbo code word from the at least one set of IR samples, turbo decodes the turbo code word to produce inbound data, and outputs the inbound data to the downlink/uplink interface. The turbo decoding module performs metric normalization based upon a chosen metric, performs de-rate matching, performs error detection operations, and extracts information from a MAC packet that it produces. | 2009-09-03 |
| 20090219953 | METHOD AND APPARATUS FOR ALLOWING NON-IP BASED NETWORKS TO INTERACT WITH IPTV-BASED SYSTEMS - A method of allowing a non-IP-based network to interact with an IPTV-based network is provided. The method comprises: receiving an indication at an IPTV Mediation Application Server (IPTV Mediation AS) that a subscriber to IPTV service is watching television, wherein the television is connected to an IPTV set-top box (IPTV STB) in a home viewing network; receiving a call from a caller directed to a circuit-switched communication device of the subscriber; suspending normal call processing and giving control of the call to the IPTV Mediation AS; interacting with the home viewing network and sending instructions to the IPTV STB regarding a pop-up message to be played on the television; receiving instructions for handling the call at the IPTV Mediation AS; and sending the instructions for handling the call to a service switching point. | 2009-09-03 |
| 20090219954 | Conversion device with multi-faceted output face and laser projection system incorporating the same - The present invention relates generally to multi-faceted wavelength conversion devices and laser projection systems incorporating the same. | 2009-09-03 |
| 20090219955 | LASER OSCILLATION METHOD, LASER, LASER PROCESSING METHOD AND LASER MEASUREMENT METHOD - The present invention relates to a laser oscillation method for effectively suppressing fluctuations in pulse widths. The laser oscillation method oscillates a pulsed beam in a laser that comprises pumping means, a resonator, Q-switching means and a controller. The pumping means continuously supplies pumping light to a gain medium, which is arranged on the resonating optical path of the resonator and generates emission light by being supplied with pumping energy. The Q-switching means modulates the resonator losses of the resonator. The controller controls an extinction ratio of Q-switching means to a value that has been selected in accordance with the frequency of repeat use in the pulsed beam such that fluctuations in the full width at half maximum of a pulsed beam outputted from the laser are within a prescribed range of the region of frequency of repeat use used by the Q-switching means. | 2009-09-03 |
| 20090219956 | Device for Generating Narrowband Optical Radiation - Optical parametric generation is disclosed, wherein a bulk Bragg grating is used as an element for providing narrow wavelength bandwidth. Various embodiments for obtaining improved performance and narrow bandwidth operation are disclosed. | 2009-09-03 |
| 20090219957 | Radio-Frequency-Modulated Surface-Emitting Semiconductor Laser - In a surface emitting semiconductor laser comprising a semiconductor chip ( | 2009-09-03 |
| 20090219958 | WAVELENGTH CONVERTING LASER AND IMAGE DISPLAY - A wavelength converting laser includes: a fundamental-wave laser light source emitting a fundamental wave; and a wavelength conversion element converting the fundamental wave emitted from the fundamental-wave laser light source into a converted wave having a different wavelength from the fundamental wave, in which: a pair of fundamental-wave reflecting surfaces is arranged on both end sides of the wavelength conversion element in the directions of an optical axis thereof and reflects the fundamental wave to thereby pass the fundamental wave a plurality of times inside of the wavelength conversion element, and at least one of the fundamental-wave reflecting surfaces transmits the converted wave; and the pair of fundamental-wave reflecting surfaces allows the fundamental wave to cross inside of the wavelength conversion element and form a plurality of light-concentration points at places different from a cross point of the fundamental wave. The wavelength converting laser is capable of obtaining a high conversion efficiency stably and being miniaturized. | 2009-09-03 |
| 20090219959 | METHOD AND SYSTEM FOR TUNABLE PULSED LASER SOURCE - A tunable pulsed laser includes a seed source and an optical circulator. The optical circulator includes at least a first port coupled to the seed source, a second port, and a third port. The laser also includes an amplitude modulator characterized by a first optical side and a second optical side. The first optical side is coupled to the second port of the optical circulator. The laser further includes a first optical amplifier characterized by an input end and a reflective end. The input end is optically coupled to the second side of the amplitude modulator. The laser additionally includes a tap coupler optically coupled to the amplitude modulator and characterized by a pre-determined split ratio. Moreover, the laser includes a first photo-detector optically coupled to the tap coupler and adapted to receive a portion of the seed signal transmitted through the amplitude modulator and to generate an output signal. | 2009-09-03 |
| 20090219960 | PHASE AND POLARIZATION CONTROLLED BEAM COMBINING DEVICES AND METHODS - A controller, such as a programmable logic controller, may manipulate a phase and/or polarization module to alter and/or control the phase and polarization of input beams. Utilizing active phase and polarization control can enable the combination of any arbitrary number of input beams into a single, combined beam. Utilizing active phase and polarization control can also enable the combination of input beams having arbitrary power levels. | 2009-09-03 |
| 20090219961 | Laser Systems and Methods Having Auto-Ranging and Control Capability - Laser systems and methods having an ability to automatically adjust a laser output based on one or more of a state of an object detected within a field of view and a motion of the laser system are disclosed. | 2009-09-03 |
| 20090219962 | Control Modules for Laser Systems Having Auto-Ranging and Control Capability - Control modules for automatically adjusting a laser output based on a range to an object detected within a field of view are disclosed. | 2009-09-03 |
| 20090219963 | OPTICAL MODULE - An optical module includes a laser device, a thermal conduction member, a Peltier device disposed between the laser device and the thermal conduction member, a heat radiation part, and a variable thermal-resistance device disposed between the thermal conduction member and the heat radiation part, the variable thermal-resistance device changing a thermal resistance between the thermal conduction member and the heat radiation part according to an ambient temperature. | 2009-09-03 |
| 20090219964 | LASER DIODE DRIVER - An apparatus for driving a laser diode ( | 2009-09-03 |
| 20090219965 | POWER-SAVING LASER POINTER MOUSE - The present invention provides a power-saving laser pointer mouse including a battery, a micro-controller and a laser diode. The power-saving laser pointer mouse can be operated in multi-stage power-saving modes according to the voltage value of the battery. The lighting time interval of the laser diode is adjusted by the micro-controller according to the voltage value of the battery. When the voltage value of the battery is reduced, the lighting time interval of the laser diode is shortened so as to achieve the power-saving purpose. | 2009-09-03 |
| 20090219966 | LASER DIODE WITH IMPROVED HEAT DISSIPATION - A laser diode structure that includes two different insulator layers, one to maintain good optical confinement, typically located at the sides of the laser ridge, and another to improve the heat dissipation properties, typically located on the etched surfaces away from the ridge. | 2009-09-03 |
| 20090219967 | Semiconductor optical device - To provide a semiconductor optical device which can restrain laser characteristics from being deteriorated by excitation in a substrate mode and can reduce the number of manufacturing steps. A semiconductor optical device comprises a first DBR layer, provided on a semiconductor substrate, having first and second semiconductor layers stacked alternately, a first cladding layer, an active layer, and a second cladding layer. The semiconductor substrate has a bandgap higher than that of the active layer. The first DBR layer is transparent to light having an emission wavelength, while the first and second semiconductor layers have respective refractive indices different from each other. Since the first DBR layer is thus provided between the semiconductor substrate and first cladding layer, the guided light reaching the lower end of the first cladding layer, if any, is reflected by the first DBR layer, whereby light can be restrained from leaking to the semiconductor substrate. This can avoid the substrate-mode excitation, thereby suppressing its resulting laser characteristic deteriorations such as destabilization of oscillation wavelengths. | 2009-09-03 |
| 20090219968 | CONTROL SYSTEM FOR AN ARC FURNACE - A control system for and method of controlling a vertical position of at least one electrode of an arc furnace, where the arc furnace comprises a furnace transformer having a primary, input side and a secondary, output side which is electrically connected to the at least one electrode, the control system comprising: at least one current-measuring device for measuring a current as drawn by the arc furnace; a voltage-measuring device for measuring a voltage as applied across the arc furnace; and a control unit for dynamically determining a setpoint for the vertical position of the at least one electrode based on the measured values of current and voltage, and providing an actuating output for driving a lifting arrangement to adjust the vertical position of the at least one electrode so as to follow the dynamically-determined setpoint. | 2009-09-03 |
| 20090219969 | SUBSTRATE SURFACE TEMPERATURE MEASUREMENT METHOD, SUBSTRATE PROCESSING APPARATUS USING THE SAME, AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD - The expansion amount of a substrate ( | 2009-09-03 |
| 20090219970 | Multi-laser system - Hand held infrared measurement devices are disclosed, having at least two separated laser sighting emitters ( | 2009-09-03 |
| 20090219971 | METHOD AND APPARATUS FOR CORRECTING THE OUTPUT SIGNAL OF A RADIATION SENSOR AND FOR MEASURING RADIATION - A method for correcting the output signal of a radiation sensor | 2009-09-03 |
| 20090219972 | DEVICE AND METHOD FOR MEASURING TEMPERATURE OVER AN AREA - Device for registration of temperature over an area by means of thermochromatic materials, which includes one, two or several layers ( | 2009-09-03 |
| 20090219973 | Pulse modulation and demodulation in a multiband uwb communication system - In a wireless communications system, such as a multiband Ultra Wideband communications system, data is transmitted by means of the phases of pulses in multiple frequency bands. A signal is transmitted with a predetermined phase in at least one of the frequency bands for at least a part of the time, and can be used to allow accurate detection of the phases of the signals transmitted in the other frequency bands. One of the frequency bands can be designated as a reference band, and pulses can be transmitted with constant phase in the reference band. More generally, pulses can be transmitted in the other frequency bands with phases which have a known relationship with the phases of the pulses in the reference band. | 2009-09-03 |
| 20090219974 | VARYING DEVICE IDENTITIES - A communication device comprises a memory for storing a device identity; a data transmitter for supporting communication links with other devices; and a communication controller, wherein the controller is configured to periodically vary the stored device identity and to cause the data transmitter to periodically transmit the stored device identity so that the device can be identified. | 2009-09-03 |
| 20090219975 | Ultra wide band device for detection and avoidance of ultra wide band signal - Example embodiments are directed to a method for detection and avoidance (DAA) of an ultra wide band (UWB) signal and a UWB terminal. The method includes: shifting a data signal by a desired frequency in a first direction; filtering the shifted data signal through a notch filter; and shifting the filtered data signal by the desired frequency in a second direction, the second direction being opposite to the first direction. The UWB terminal comprises an encoder for encoding data signals; a tone nulling unit for changing at least one tone of the plurality of tones into a null tone; an inverted fast Fourier transformer; a low pass filter for filtering the inverted fast Fourier transformed data signals; a filter circuit for attenuating an intensity of the low pass filtered signal; and a radio frequency (RF) circuit for transmitting the filtered signal. | 2009-09-03 |
| 20090219976 | Transmission of Information to a GPS Device - A terrestrial system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system including a processor, a memory coupled to the processor and including computer-readable instructions configured to, when executed by the processor, cause the processor to receive the non-GPS information, determine an available pseudo-random noise (PRN) code, spread the non-GPS information using the available PRN code to provide a spread signal, modulate a GPS carrier frequency using the spread signal to produce a GPS compatible signal, and a terrestrial transmitter configured to transmit the GPS compatible signal. | 2009-09-03 |
| 20090219977 | RADIO COMMUNICATION APPARATUS - A radio communication apparatus includes a mapping unit configured to map data to a burst data transmission region corresponding to radio resources; and a transmitter configured to transmit the data mapped to the burst data transmission region, where a reference signal used for canceling an interference wave is mapped to the data transmission region. | 2009-09-03 |
| 20090219978 | Methods And Apparatus For Adaptive Link Partner Transmitter Equalization - Methods and apparatus are provided for adaptive link partner transmitter equalization. According to one aspect of the invention, a local transceiver adapts one ox more equalization parameters of a link partner by receiving a training frame over a channel between the link partner and the local transceiver, wherein the training frame is comprised of a predefined training pattern; adjusting one or more of the equalization parameters of the link partner; and determining whether the equalization of the channel satisfies one or more predefined criteria based on whether the predefined training pattern is properly received by the local transceiver The predefined training pattern can be a pseudo random pattern, such as a PN | 2009-09-03 |
| 20090219979 | System and Method for Selectable Mask for LDSL - The present invention overcomes various problems by defining two upstream masks (U | 2009-09-03 |
| 20090219980 | Feedback System and Apparatus for Video Compensation - A system and apparatus for compensating cable losses in a video signal transmission system includes feedback circuits to determine the spectral attenuation of a received signal and to control an equalizer circuit to amplify selected frequencies of the received signal, and to determine the various times of arrival of two or more video signals and selectively adjust one or more delay lines to reduce the differences in their arrival times. | 2009-09-03 |
| 20090219981 | MINIMUM MEAN SQUARE ERROR EQUALISER WITH REDUCED COMPLEXITY - The present invention relates to the field of communication devices, e.g. wireless communication devices. More particularly, the present invention relates to the field of signal equalisation, especially minimum mean square error equalisation. The present invention especially relates to an equaliser for a communication device, a method of equalising one or more received signals and a software program product for carrying out the method. The present invention reduces the size of a look-up table needed for a division operation and, generally, provides for a reduced complexity of the equaliser and receiver. The equaliser for a communication device comprises a filter calculator for determining a channel power value based on one or more channel response values and selecting one of two or more equaliser structures based on said channel power value and based on at least one threshold value for separating the channel power values into at least two ranges; and a filter for equalising one or more received signals according to the selected equaliser structure. Advantageously, at least one of said equaliser structures corresponds to an, at least approximated, minimum mean square error equaliser structure or to an, at least approximated, suboptimal minimum mean square error equaliser structure. | 2009-09-03 |
| 20090219982 | Selectively Disabling Interference Cancellation Based on Channel Dispersion Estimation - A channel dispersion estimation algorithm(s) may be implemented within a channel length estimation module of a multi-branch equalizer processing module that disables a branch of the multi-branch equalizer processing module when the channel length or channel delay spread associated with received radio frequency (RF) bursts exceeds a predetermined threshold. The channel dispersion estimation algorithm identifies when the radio frequency (RF) bursts have a channel length or channel delay spread that can affect receiver performance. The channel length estimation module may disable interference cancellation by a branch of the multi-branch equalizer processing module in response to such a channel length or channel delay spread. | 2009-09-03 |
| 20090219983 | DATA COMMUNICATION CIRCUIT WITH EQUALIZATION CONTROL - An adaptive equalizer comprises an adjustable equalizer circuit that allows to enhance the frequency dependence of contents of the transmitted signals which suffer from losses in the connected transmission channel. A blind equalization tuning procedure is proposed that operates without knowledge about the characteristic of transmission channel. Phase positions of transitions in the equalized signal are detected. A digital post-processing circuit evaluates a measure for spread of the detected phase positions of transitions, accumulated over a plurality of the symbol periods. The digital post-processing circuit controls the adjustable equalizer, setting the adjustable equalizer to a setting wherein the detected spread is minimized. | 2009-09-03 |
| 20090219984 | Autoregressive Moving Average Modeling for Feedforward and Feedback Tomlinson-Harashima Precoder Filters - Apparatus and methods provide a Tomlinson-Harashima precoder scheme in which a feedback filter may be constructed to match an approximated feedforward filter, where the feedforward filter is approximated using autoregressive moving average modeling. | 2009-09-03 |
| 20090219985 | Systems and Methods for Processing Multiple Projections of Video Data in a Single Video File - Methods and systems for processing a plurality of video streams are disclosed. One example method includes encoding a first video stream corresponding to a first projection of a scene and encoding a second video stream corresponding to a second projection of the scene. Due to similarities in the spatially proximate projections, the encoded second video stream may be compressed more than the encoded first video stream. Moreover, the first encoded video stream may be stored in a primary data field of a video file and the second encoded video stream may be stored in a supplemental data field of the video file. | 2009-09-03 |
| 20090219986 | HIERARCHICAL VIDEO ANALYSIS-BASED REAL-TIME PERCEPTUAL VIDEO CODING - A system for encoding a video stream into a processed video signal that includes at least one image. The system includes a downscaling module, a partitioning module, a rate control module, and an encoder section. The downscaling module receives the video stream and produces a downscaled video stream. A partitioning module, including a region detection module, receives the downscaled video stream and detects a pattern of interest in the at least one image. The partitioning module is operable to partition the at least one image based on the detected pattern of interest. The rate control module that receives an output from the partitioning module and produces an encoder control signal dependent on the output from the partitioning module. The encoder section, coupled to the rate control module, receives the video stream and generates the processed video signal. | 2009-09-03 |
| 20090219987 | Method and Device for Generating a Marked Data Flow, Method and Device for Inserting a Watermark Into a Marked Data Flow, and Marked Data Flow - A method generates a marked data flow from an encoded data flow; at least one first data flow section of the encoded data flow is marked as a marked data flow section; and the marking of the marked data flow section indicates that the marked data flow section is suitable to be mixed with a watermark. A method inserts watermarks into the marked data flow, and devices generate the marked data flow and insert watermarks into the marked data flow. | 2009-09-03 |
| 20090219988 | METHODS OF ENCODING AND DECODING AN IMAGE OR A SEQUENCE OF IMAGES, CORRESPONDING DEVICES, COMPUTER PROGRAM AND SIGNAL - A method is provided of coding an image or a sequence of images, generating a data stream, each image being split into at least two images blocks, wherein each of which is associated a transformed block comprising a set of coefficients. The coefficients of a transformed block are distributed into group(s) of coefficients according to a predetermined path for reading the transformed blocks. The method includes, for each of the transformed blocks: a step of coding a series of coefficients corresponding to at least one group of coefficients, the series being determined on the basis of a type of series of coefficients that is selected from at least two possible types, and a step of inserting into the data stream a cue representative of the type of series of coefficients that is selected for the image or the sequence of images, or for a portion of the image. | 2009-09-03 |
| 20090219989 | CODING DEVICE AND EDITING DEVICE - A coding device includes a coding unit ( | 2009-09-03 |
| 20090219990 | Cross-Layer Optimization for Scalable Video Multicast over IEEE 802.11 Wireless Local Area Networks - A system and method for transmitting video signals to a plurality of receivers in a multicast session, including controlling and adapting coding, transmission and protection schemes of a plurality of layers of a network protocol stack are described. | 2009-09-03 |
| 20090219991 | BIT RATE ESTIMATION IN DATA OR VIDEO COMPRESSION - To reduce the complexity of rate-distortion cost computation in AVC (MPEG4 Pat2/H.264), a bit rate estimation method is used to avoid entropy coding during Intra and Inter mode decision. The bit rate estimation method predicts the number of entropy coded bits based on the quantized transform coefficients, thus avoiding the need to entropy code the quantized transform coefficients at each decision iteration. | 2009-09-03 |
| 20090219992 | Compensating delay of channel state information between receiver and transmitter during adaptive video delivery - A method for controlling transmission of video data in a network, including: transmitting video data to a receiver via the network; receiving channel parameter information measured by the receiver; applying a predictive function to the channel parameter information to compensate for delay times in receiving the channel parameter information from the receiver, and generating a feedback function; and adjusting the video data to be transmitted in response to the feedback function to compensate for network conditions. | 2009-09-03 |
| 20090219993 | Resource Allocation for Frame-Based Controller - A method for resource allocation for video encoder to achieve optimal picture quality within a given resource budget. Making a video encoder utilize the computational complexity, bitrate and other resources in an optimal way while maintaining optimal quality is a complicated optimization problem. A subset of this resource allocation problem, optimizing the tradeoff between bitrate versus quality is called rate-distortion optimization and is performed in most modern encoders. In order to achieve a computationally practical solution of the resource allocation problem, the current invention partitions the video content into a number of regions based on their characteristics and assesses resource allocation among regions to achieve the optimal quality within the resource budget limit. To maintain the computation tractable, the invention relies on bit production model and distortion model for the underlying video content to assess the quality and resource usage instead of actually conducting video compression. An iterative optimization algorithm has been developed to implement the invention. | 2009-09-03 |
| 20090219994 | Scalable video coding and decoding with sample bit depth and chroma high-pass residual layers - Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an input frame is downsampled in terms of sample depth and chroma sampling rate, encoded, and output from the encoder as a base layer bitstream. The base layer bitstream is also reconstructed and upsampled to produce a reconstructed bitstream which is subtracted from the original input frame to produce a residual layer. The residual layer is split and encoded as a sample depth residual layer bitstream and a chroma high-pass residual layer bitstream. To recover the encoded input frame, a decoder receives one or more of these bitstreams, decodes them, and combines them to form a reconstructed image. The use of separate codecs is allowed for the base layer and the enhancement layers, without inter-layer dependencies. | 2009-09-03 |
| 20090219995 | VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090219996 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090219997 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090219998 | VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090219999 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090220000 | Inter-Layer Prediction Method for Video Signal - The present invention relates to a method for conducting interlayer motion prediction in encoding or decoding of video signal. The present method checks whether at least one of vertically-adjacent two macro blocks on a base layer is intra mode, and if only one of the two macro blocks is identified to intra mode, motion information of an inter-mode macro block of the two macro blocks is copied to the other intra-mode macro block in order to set the intra-mode macro block to a macro block having motion information. | 2009-09-03 |
| 20090220001 | Tile-Based System and method For Compressing Video - A system and method are described below for encoding interactive low-latency video using interframe coding. For example, one embodiment of a computer-implemented method for performing video compression comprises: logically subdividing each of a sequence of images into a plurality of tiles, each of the tiles having a defined position within each of the sequence of images, the defined position remaining the same between successive images; encoding one of the tiles at a first defined position in a first image of the sequence of images using a first compression format and encoding the reminder of the tiles in the first image using the second compression format; and encoding one of the tiles at a second defined position in a second image of the sequence of images using the first compression format and encoding the reminder of the tiles in the first image using the second compression format; wherein the second compression format is dependent on previously-encoded tiles encoded according to the first compression format and/or the second compression format. | 2009-09-03 |
| 20090220002 | SYSTEM AND METHOD FOR COMPRESSING VIDEO BASED ON DETECTED INTRAFRAME MOTION - A system and method are described below for encoding interactive low-latency video using interframe coding. For example, one embodiment of a computer-implemented method for performing video compression comprises: logically subdividing each of a sequence of images into a plurality of tiles, each of the tiles having a defined position within each of the sequence of images, the defined position remaining the same between successive images; detecting motion within the sequence of images occurring at each of the positions of each of the tiles; and encoding each tile within each image of the sequence of images using a first compression format or a second compression format, wherein the frequency at which a particular tile is encoded according to the first compression format across the sequence of images is based on the detected amount of motion at the position of that tile across the sequence of images. | 2009-09-03 |
| 20090220003 | METHOD OF COMPRESSING VIDEO DATA AND A MEDIA PLAYER FOR IMPLEMENTING THE METHOD - A method of receiving video data comprising the steps of: receiving at least one chunk of video data comprising a number of sequential key video frames where the number is at least two and, constructing at least one delta frame between a nearest preceding key frame and a nearest subsequent key frame from data contained in the either or each of the nearest preceding and subsequent frames. | 2009-09-03 |
| 20090220004 | Error Concealment for Scalable Video Coding - A method of deriving replacement block information, such as a replacement motion vector, for a lost or damaged image block in scalable video coding comprises combining information about neighbouring block information in at least the current layer and the corresponding and/or neighbouring blocks in at least one other layer, to derive said replacement block information. | 2009-09-03 |
| 20090220005 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING MULTIPLE REFERENCE-BASED MOTION PREDICTION - Provided are a method and apparatus for encoding an image by using motion prediction and a method and apparatus for decoding an image by using motion prediction. The method of encoding an image by using motion prediction, the method includes: determining at least one candidate predictor set including at least one candidate predictor within a candidate predictor range away from a location of a current predictor in a reference frame; determining a reference predictor based on a distortion rate of hypothesis predictors determined according to the at least one candidate predictor of each of the at least one candidate predictor set; performing motion prediction with regard to a current frame by using a reference block corresponding to the reference predictor and a current block; and encoding image data including the current frame based on a result of the motion prediction. | 2009-09-03 |
| 20090220006 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090220007 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-03 |
| 20090220008 | Inter-Layer Prediction Method for Video Signal - The present invention relates to a method for conducting interlayer texture prediction in encoding or decoding of video signal. The present method constructs a pair of frame macro blocks from vertically-adjacent two field macro blocks of a base layer, selectively applies a de-blocking filter to the constructed pair of frame macro blocks, and uses texture information of the pair of frame macro blocks in interlayer texture prediction of a pair of frame macro blocks of a current layer. | 2009-09-03 |
| 20090220009 | IMAGE DECODING DEVICE AND IMAGE DECODING METHOD - An image decoding device ( | 2009-09-03 |
| 20090220010 | Method and Apparatus for Decoding/Encoding of a Video Signal - A method of decoding a video signal is disclosed. The present invention includes determining whether to store a first partial picture when the first partial picture and a first full picture are corresponding to a first temporal point and storing the first partial picture for decoding a second full picture referring to the first partial picture, the second full picture being corresponding to a second temporal point, the second temporal point being located after the first temporal point, wherein a level of the first partial picture on a scalable domain is lower than a level of the second full picture on the scalable domain. | 2009-09-03 |
| 20090220011 | VIDEO ENCODER AND DECODER FOR AN IMPROVED ZAPPING SERVICE FOR MOBILE VIDEO RECEPTION - The present invention relates to an improved zapping service for broadcasting digital video data to mobile receiving terminals, and in particular to a video encoder and a video decoder therefore. The zapping service contains still pictures (intra-coded frames) that are synchronized with a corresponding P-frame of a main video service. The respective synchronization data is generated by the video encoder and transmitted to the mobile receiving terminal. The video decoder of the mobile receiving terminal is capable of employing the synchronization data to use a zapping service I-frame as a Random Access Point for decoding an encoded main service image sequence. Accordingly, waiting time until the main video service is ready for display after selection of a main new video service (zapping) is reduced, and a smaller number of bandwidth consuming I-frames have to be transmitted in the main service channel. Thereby the bandwidth requirements are reduced. | 2009-09-03 |
| 20090220012 | SIGNALLING PICTURE ENCODING SCHEMES AND ASSOCIATED PICTURE PROPERTIES - Systems and methods that provide a video stream, the video stream comprising a sequence of plural compressed pictures corresponding to a video program, the plural compressed pictures having plural sets of compressed pictures, each of the plural sets adhering to one or more picture interdependencies, properties, or a combination of the picture interdependencies and properties, and provide auxiliary information in the video stream, the auxiliary information comprising plural data fields, the plural data fields comprising a first data field corresponding to one of multiple possible coding scheme, the coding scheme comprising a set of tiers that uniquely define the one coding scheme, the plural data fields further comprising a second data field different from the first data field, the second data field comprising an indication of whether the one or more picture interdependencies, properties, or a combination of both corresponding to the set of tiers is valid for use in decoding. | 2009-09-03 |
| 20090220013 | Low-cost connector apparatus and methods for use in high-speed data applications - Low-cost connector apparatus for passing electrical signals from one device over another via a cable. In one embodiment, the connector apparatus comprises a coaxial type connector that mates with a host device, such as via the motherboard thereof. In one variant, the connector further comprises a plurality of electrical components including an integrated circuit adapted to condition (e.g., equalize) the signals being transmitted over the cable. The connector (and hence internal electrical components) is shielded so as to mitigate the effects of EMI or RFI on the host device circuitry itself. In another variant, the signals comprise IEEE-Std. 1394 “FireWire” high speed data signals, and the use of the shielded connector in the signal pathway allows the use of lower cost cabling than would otherwise be required with a non-shielded (non-integrated) connector. | 2009-09-03 |
| 20090220014 | BASE STATION, MOBILE STATION AND METHOD - A base station performs communication of an orthogonal frequency division multiplexing (OFDM) scheme with a mobile station by using any one of equal to or greater than two frequency bands. The base station includes means that transmits a synchronization channel and a control channel using a band that includes a center frequency f | 2009-09-03 |
| 20090220015 | COARSE CARRIER FREQUENCY OFFSET ESTIMATION FOR CMMB MOBILE TV RECEIVER - A method of estimating coarse frequency offset of received symbols based on a received frequency domain sample at a k | 2009-09-03 |
| 20090220016 | INTERFERENCE REDUCTION IN A COMMUNICATION SIGNAL - The invention concerns the reduction of interference in a communication signal sent through a communication channel, where this interference is a performance limiting factor. The communication channel is any channel that can be described with memory elements. A Soft Input Soft Output receiver of a communication signal receives the communication signal and a priori information about the communication signal. Next creating candidate vectors having 1 to K samples by iteratively drawing samples using Gibbs sampling and using the a priori information. If a drawn kth sample of a candidate vector has not changed value for a predetermined number of created candidate vectors, then the value of the drawn kth sample is changed. | 2009-09-03 |
| 20090220017 | TRANSMISSION APPARATUS AND RECEPTION APPARATUS - A transmission apparatus used in a mobile communication system adopting a single carrier scheme in an uplink includes: multiplexing means configured to multiplex a pilot channel, a control channel, and a data channel; and transmission means configured to transmit a transmission symbol including at least the pilot channel and the control channel using the uplink. A first pilot channel used for a reception apparatus to measure channel state of the uplink is transmitted using a frequency band over a plurality of resource blocks. A second pilot channel for compensating for a channel transmitted by the uplink is transmitted by a resource block assigned to the transmission apparatus. Control channels of the transmission apparatus and the apparatus other than the transmission apparatus are orthogonalized with each other by a FDM scheme. | 2009-09-03 |
| 20090220018 | TRANSMITTER AND METHOD FOR DIGITAL MULTI-CARRIER TRANSMISSION - The present invention relates to a transmitter and method employing a multi-carrier transmission method, especially utilizing real coefficient wavelet filter banks. The transmitter includes a preamble data generator, a modulator, and a ramp processor. The preamble data generator generates preamble bit data, and outputs the preamble data. The modulator modulates the preamble data, generates a plurality of subcarriers, and outputs a composite wave of the time waves of the plurality of subcarriers. Subsequently, the ramp processor performs ramp processing on the composite wave with a certain delay period from a reference position of the composite wave. | 2009-09-03 |
| 20090220019 | APPARATUS AND METHOD FOR TRANSMITTING DATA USING A PLURALITY OF CARRIERS - A data transmitting and receiving method of transmitting supplementary data in an OFDM communication system is disclosed. The method of transmitting and receiving the OFDM signal includes: mapping an input bit stream into at least one transfer symbol; changing at least one of amplitudes and phases of the transfer symbols that are transmitted by a specific sub-carrier group having a plurality of sub-carriers using constellation modification information to indicate specific additional data; and transmitting the transfer symbols, to which the changing is carried out, to a receiving end by an orthogonal frequency division multiplexing data processing, the constellation modification information being identical to each other with respect to the transfer symbols that are transmitted by the specific sub-carrier group. | 2009-09-03 |
| 20090220020 | OPTIMAL ENCODER AND ENCODING METHOD FOR DUAL STREAM SYSTEM - Provided are a method of estimating an encoder for dual stream transmission, and an encoder using the same. The method includes the steps of: a) setting up the number of memories required for an encoder, a free distance condition for robust data, and a free distance condition for mixed stream of robust data and normal data; b) obtaining ½ rate encoder combinations that sustain backward compatibility with a typical trellis encoder; c) obtaining encoder combinations H that satisfy the free distance condition for the robust data and the free distance condition for the mixed stream from the ½ rate encoder combinations; d) obtaining relations between memories and input/output signals, which satisfy the encoder combinations H; and e) configuring an encoder according to the obtained relation between the memories and the input/output signals. | 2009-09-03 |
| 20090220021 | METHOD FOR TRANSMITTING/RECEIVING SIGNAL HAVING SPREAD TRAINING SYMBOL IN MOBILE COMMUNICATION SYSTEM - A method for transmitting/receiving signals in a mobile communication system, a pilot configuration of a mobile communication system capable of transmitting much more data using a conventional pilot signal, a channel estimation method, and a receiving method are disclosed. A method for transmitting a signal equipped with a training symbol in a mobile communication system which includes a transmission end capable of transmitting an output signal equipped with a training symbol for channel estimation of a reception end, includes the steps of: a) adding training symbols having the same amplitude to data symbols transmitted via subcarriers, and calculating the output signal transmitted via the subcarriers; and b) transmitting the calculated output signal via the subcarriers. | 2009-09-03 |
| 20090220022 | Device, Method and Computer Program for Transmitting an Information Signal Comprising Several Transmit Signals - A device for transmitting an information signal having several transmit signals has a modulator for generating a first and a second transmit signal. The first transmit signal is transmittable via a first spatial emitter, and the second transmit signal is transmittable via a second spatial emitter. The modulator has an OFDM control stage to load a first group of OFDM carriers with first information to generate the first transmit signal, and to load a second group of OFDM carriers with second information to generate the second transmit signal. The first group of OFDM carriers differs from the second group of OFDM carriers, and the first information differs from the second information. The present invention further provides a corresponding method and a computer program for transmitting an information signal. | 2009-09-03 |
| 20090220023 | METHOD FOR TRANSMITTING SIGNALS IN THE SYSTEM WITH MULTIFUL ANTENNAS - A wireless communication system and more particularly a method for signals in a system using a plurality of antennas are disclosed. In the method for multi-antenna-encoding data symbols to be transmitted through the plurality of antennas, at least two same data symbols multi-antenna-encoded are formed and transmitted repeatedly. Accordingly, it is possible to enhance transmission efficiency. | 2009-09-03 |
| 20090220024 | FM Simulcast Broadcast Signal Broadcast Transmission System and Receiver Device - The invention relates to a FM simulcast broadcast signal, in which an analogue and digital signal are combined for a transmission in a transmission channel with limited bandwidth as a total signal (s), which has a first phase speed (vs), an auxiliary signal (hs) is prepared in the complex region from the modulated digital signal (ds) for transmission and the FM modulated analogue signal (as) for transmission, which has a second phase speed (vas). Said auxlliary signal (hs) is placed in an used or at least largely unused frequency range of the digital signal (ds). The total signal (s) for transmission comprises the auxiliary signal (hs) and the FM modulated digital signal (ds) and the first phase speed (vs) of the total signal (s) corresponds at least approximately to the second phase speed (vas) of the analogue signal (as). | 2009-09-03 |
| 20090220025 | Transmission method, transmission circuit and transmission system - A transmission method for transmitting transmission data via a single line, includes: transmitting, as the transmission data, data that has one rising or falling transition of the amplitude of the data in each clock cycle of a clock and that carries a 2- or greater-bit value, making use of the phase from the edge of the clock to the transition in amplitude of the data. | 2009-09-03 |
| 20090220026 | DIGITAL BROADCAST TRANSMITTER/RECEIVER HAVING IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF - A digital broadcast transmitter/receiver, and a signal processing method thereof, includes a randomizer randomizing a dual transport stream which includes a normal data packet and a robust data packet and into which stuff bytes are inserted, a stuff-byte exchanger replacing the stuff bytes of the randomized data with known data, a first RS encoder performing RS-encoding of data output from the stuff-byte exchanger, a packet formatter performing an interleaving of the robust packet of the data output from the first RS encoder and reformatting the packet, an interleaver interleaving data output from the packet formatter, a trellis encoder performing a trellis encoding of interleaved data, a second RS encoder changing a parity by performing an RS encoding of the robust data of the trellis-encoded data, and a modulator modulating data output from the trellis encoder and RF up-converting the modulated data. | 2009-09-03 |
| 20090220027 | Method For Coding Data Symbols - Data symbols, transmitted by OFDM radio using at least two transmission antennae, are coded by a DSTBC coding and a DSTFBC coding. Two adjacent data symbols of a selected sub-carrier are provided for initializing a DSTFBC coding in a sub-carrier direction and are used for DSTFBC coding of similarly positioned data symbols in further sub-carriers in the sub-carrier. The DSTFBC coding is carried out from the data symbols of the first sub-carrier direction. In each sub-carrier the two data symbols formed by DSTFBC coding are used for initializing a DSTBC coding in the OFDM symbol direction. In the reverse direction, two sequential DSTBC coded data symbols on a first sub-carrier for initializing a DSTFBC coding in a sub-carrier direction and are used for DSTFBC coding of similarly positioned data symbols in further sub-carriers for DSTFBC coding from the data symbols of the first sub-carrier over the adjacent sub-carriers. | 2009-09-03 |
| 20090220028 | CALIBRATED PULSED SERIAL LINK - Circuitry for decoding data from a pulsed signal received on a single line, the circuitry comprising receiving means for receiving a first edge and a second edge on the single line, the first and second edges being separated by a time period, the time period representing said data; decode circuitry comprising determining means arranged to determine a value of the time period and decoding means arranged to decode said data based on said determined value of the time period; a memory arranged to store a reference value; and calibration means for calibrating said decode circuitry based on a comparison between said determined value of the time period and said reference value, wherein the determining means comprises a plurality of sampling units for sampling said pulsed signal at different times, and selection means for selecting the output of one of said sampling units to decoded. | 2009-09-03 |
| 20090220029 | CLOCK RECOVERY CIRCUIT AND DATA RECEIVING CIRCUIT - A clock recovery circuit has a boundary detection circuit detecting a boundary in an input signal in accordance with a first signal, and performs recovery of a clock by controlling the timing of the first signal in accordance with the detected boundary. The clock recovery circuit has a boundary detection timing varying circuit and a variation reducing circuit. The boundary detection timing varying circuit dynamically varies boundary detection timing in the boundary detection circuit by applying a variation to the first signal, and the variation reducing circuit reduces a phase variation occurring in the recovered clock in accordance with the dynamic variation of the boundary detection timing performed by the boundary detection timing varying circuit. | 2009-09-03 |
| 20090220030 | SYSTEM AND METHOD FOR MODULATING A SIGNAL AT AN ANTENNA - A Direct Spatial Antenna Modulation (DSAM) antenna structure makes use of the instantaneous electromagnetic field state of a radiating antenna structure to achieve direct modulation of a transmitted signal within the antenna. In contrast to existing amplitude and phase-only based digital modulation techniques, this innovative technique utilizes an inherent spatial modulation component, mapping data spatially to different locations in the antenna structure, where each location has different transmitting and receiving properties. This spatial component of the modulation can enable, for example, a unique increase in data transmission speed in a fixed spectral bandwidth with no increase in bit error rate over current phase and amplitude only modulation techniques. Additionally, the DSAM antenna structure affords important benefits in reduced hardware complexity, reduced supply current consumption, and relaxed amplifier linearity requirements. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this Abstract. | 2009-09-03 |
| 20090220031 | METHOD FOR BLIND DEMODULATION AT HIGHER ORDERS OF SEVERAL LINEAR WAVEFORM TRANSMITTERS - Disclosed is a method of blind demodulation of signals arising from one or more transmitters, the signals including a mixture of symbols comprising at least one step of separating the transmitters by using the temporal independence of the symbol trains specific to a transmitter and the mutual independence of the transmitters. | 2009-09-03 |
| 20090220032 | Multi-Stage Combining Weight Calculation Method and Apparatus - Combining weights are calculated in multiple stages based on an overall system impairment covariance matrix and a grouping of signal processing delays. Computing the combining weights in multiple stages avoids having to invert the entire system impairment covariance matrix. Instead, smaller matrix inversions are performed. In one embodiment, a received signal is processed by calculating an impairment covariance matrix for a set of processing delays used to derive a plurality of signal values from the received signal. A set of intermediate combining weights is calculated for each of at least two different subsets of the processing delays based on the impairment covariance matrix. The signal values derived across the subsets of processing delays are combined using the sets of intermediate combining weights and the impairment covariance matrix. | 2009-09-03 |
| 20090220033 | METHOD AND APPARATUS FOR BIT DEMULTIPLEXING IN A WIRELESS COMMUNICATION SYSTEMS - A method and apparatus of bit demultiplexing for a rate 1/3 convolutional encoder in a wireless communication system, the method comprising, receiving bits from the rate-1/3 convolutional encoder, demultiplexing the received bits by distributing the bits sequentially into 3 sequences denoted as V | 2009-09-03 |
| 20090220034 | LAYERED RECEIVER STRUCTURE - A method and apparatus is disclosed herein for receiving a layered transmission of data in a wireless communication system using an iterative layered receiver structure. In one embodiment, a receiver comprises a layer 1 demapper and a layer 1 outer decoder to iteratively decode layer 1 of the coded data, and a layer 2 demapper and a layer 2 outer decoder to iteratively decode layer 2 of the coded data, wherein the layer 1 demapper generates a layer 1 set of likelihood estimates only for bits of the first information layer of received signal data in each of one or more iterations and where the layer 1 set of likelihood estimates are generated in response to the received signal data and, in at least one of the one or more iterations, also in response to one or more of the likelihood estimates generated by the outer decoders in decoding schemes for at least one layer other than layer 1; the layer 1 outer decoder updates the layer 1 likelihood estimates from the layer 1 demapper and feedbacks the updated layer 1 likelihood estimates to the layer 1 demapper for use in another iteration of iterative decoding; the layer 2 demapper generates a layer 2 set of likelihood estimates only for information bits of the layer 2 of received signal data in each of one or more iterations, and where the layer 2 set of likelihood estimates are generated in response to the received signal data and, in at least one of the one or more iterations, also in response to one or more of the likelihood estimates generated by the outer decoders in decoding schemes for at least one layer other than layer 2; and the layer 2 outer decoder updates the layer 2 likelihood estimates from the layer 2 demapper and feedbacks the updated layer 2 likelihood estimates to the layer 2 demapper for use in another iteration of iterative decoding. | 2009-09-03 |
| 20090220035 | APPARATUS FOR EQUALIZING CHANNEL IN FREQUENCY DOMAIN AND METHOD THEREFOR - Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel estimation unit and the received signal to channel characteristic to meet condition required for noncausal filtering, a noncausal filter for changing the channel characteristic changed by the channel matched filter from nonminimum phase channel to minimum phase channel, a reverse channel calculation unit for calculating a reverse of the channel changed by the non-causal filter in frequency domain, and a frequency domain equalization unit for performing channel equalization with respect to the channel changed by the noncausal filter in the frequency domain by using the reverse obtained by the reverse channel calculation unit as coefficients of the frequency domain equalization apparatus. | 2009-09-03 |
| 20090220036 | DATA INTERFACE AND METHOD OF SEEKING SYNCHRONIZATION - The present invention provides for method of seeking synchronization at a data interface between a transmitting element and a receiving element, and to related transmitting and receiving elements of the interface, in which the clock frequency of both elements is the same but which exhibit a phase difference, also known as mesochronous clock domains, the method including the steps of, prior to data transfer at the interface, delivering a strobe signal generated at the transmitting element to the receiving element, generating a strobe signal at the receiving element and synchronizing the same to the strobe signal received from the transmitting element, and maintaining the synchronized strobe signal generated at the receiving element for the sampling of data appearing at the interface from the transmitting element. | 2009-09-03 |
| 20090220037 | PLURAL CIRCUIT SELECTION USING ROLE REVERSING CONTROL INPUTS - Data is communicated through two separate circuits or circuit groups, each having clock and mode inputs, by sequentially reversing the role of the clock and mode inputs. The data communication circuits have data inputs, data outputs, a clock input for timing or synchronizing the data input and/or output communication, and a mode input for controlling the data input and/or output communication. A clock/mode signal connects to the clock input of one circuit and to the mode input of the other circuit. A mode/clock signal connects to the mode input of the one circuit and to the clock input of the other circuit. The role of the mode and clock signals on the mode/clock and clock/mode signals, or their reversal, selects one or the other of the data communication circuits. | 2009-09-03 |
| 20090220038 | SYSTEMS AND METHODS FOR MULTIPLEXING MULTIPHASE CLOCKS - Various embodiments of the present invention provide systems, circuits and methods that allow for switching between two or more multiphase clocks. As one example, a system for switching between multiphase clocks is disclosed. The system includes a multiphase clock multiplexer. The multiphase clock multiplexer receives a first multiphase clock and a second multiphase clock. The first multiphase clock includes at least a first phase clock and a second phase clock, and the second multiphase clock includes at least a third phase clock and a fourth phase clock. The multiphase clock multiplexer receives a select signal, and is operable to output a first output corresponding to the first phase clock when the select signal is at a first assertion and corresponding to the third phase clock when the select signal is at a second assertion, and to output a second output corresponding to the second phase clock when the select signal is at the first assertion and corresponding to the fourth phase clock when the select signal is at the second assertion. | 2009-09-03 |
