44th week of 2009 patent applcation highlights part 30 |
Patent application number | Title | Published |
20090268731 | Point-to -multipoint for multicast and unicast forwarding - A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers. | 2009-10-29 |
20090268732 | Channel change tracking metric in multicast groups - A method, device and computer readable medium that measures the error rate in a network data stream to a device, for example a Set Top Box. The method including joining one or more multicast groups representing audio and or video data for a requested channel; discarding a predetermined number of received packets for each of the joined multicast groups; and comparing a sequence number of a first packet received subsequent to the predetermined number of discarded packets to a sequence number of a next subsequent received packet in order to determine a sequence error. The method may further include tracking sequence numbers of received packets for one or more of the joined multicast groups; incrementing a packets received counter for each received packet for one or more of the joined multicast groups; and comparing each received sequence number with the next received sequence number in order to determine sequence errors. | 2009-10-29 |
20090268733 | Methods and Apparatus for Content Delivery via Application Level Multicast with Minimum Communication Delay - A method for constructing an overlay multicast tree to deliver data from a source to an identified group of nodes is provided in which a plurality of nodes are identified and mapped into multidimensional Euclidean space. A geometric region is constructing having a size that is the minimum size necessary to contain the source and all the nodes. Once constructed, a tree is created beginning at the source and including all of the nodes within the geometric region. | 2009-10-29 |
20090268734 | EFFICIENT ADDRESS-SPACE EXTENSION TO PSEUDO MULTI-HOMED HOSTS - A residential gateway ( | 2009-10-29 |
20090268735 | Look-Up Table Based Approach for Layer Combining in ISDB-T and ISDB-TSB Receivers - A method of layer combining based on generating a look-up table in an Integrated Services Digital Broadcasting (ISDB) receiver includes obtaining a transmission parameter configuration, generating the look-up table based on the transmission parameter configuration, assembling a null transport stream packets and a valid transport stream packets from a plurality of layers of a multiplexing frame, and generating a completed transport packet stream using the look-up table. The receiver may generate the look-up table by at least one of generating the look-up table in real time or selecting from a look-up table set based on the transmission parameter configuration. The transmission parameter configuration may include at least one of a transmission mode, a guard interval, a modulation, and a coding rate. The look-up table may define an order of the null transport stream packets and the valid transport stream packets from the plurality of layers in the multiplexing frame. | 2009-10-29 |
20090268736 | Early header CRC in data response packets with variable gap count - A method is provided for processing commands issued by a processor over a bus. The method includes the steps of (1) transmitting the command to a remote node to obtain access to data required to complete the command; (2) receiving from the remote node a response packet including a header and a header CRC; (3) validating the response packet based on the header CRC; and (4) before receiving the data required to complete the command, arranging to return the data to the processor over the bus. | 2009-10-29 |
20090268737 | Method and Apparatus for VLAN-Based Selective Path Routing - An illustrative embodiment of the present invention includes a method for routing at least one packet from at least one source node to at least one destination node, each node is operatively coupled to a given packet switch within a plurality of packet switches operatively coupled to a given circuit switch. The method includes a step of establishing one or more Virtual Local Area Networks (VLANs). Each VLAN comprising a subset of the plurality of packet switches operatively coupled to the given circuit switch. At least one of the one or more VLANs comprises the at least one packet switch to which the source and destination nodes are operatively coupled. The method also includes a step of routing the at least one packet from the source node to the destination node over at least one loop-free path comprised of one or more packet switches within a given VLAN. | 2009-10-29 |
20090268738 | METHOD OF PROCESSING DATA PACKETS - A method and apparatus for processing data packets. Each data packet comprises data intended to indicate a source of the data packet. The method comprises creating a data packet at a control element. The data of the second data packet intended to indicate a source of the second data packet comprises data indicating the first source, and further comprises data indicating that the second data packet was created by the control element, the second data packet is transmitted to a destination. | 2009-10-29 |
20090268739 | Transparent Bypass and Associated Mechanisms - A network component comprising at least one processor configured to implement a method comprising transparently snooping a path control message comprising a first path identifier, wherein the path control message is sent between a plurality of routers and is not intended for the network component, analyzing a plurality of frames each comprising a second path identifier, and diverting at least some of the frames away from at least one of the routers, wherein the second path identifier in the diverted frames matches the first path identifier. Included is a method comprising configuring a bypass path by snooping a control frame comprising a label switched path (LSP) identifier, and routing a plurality of data frames associated with the LSP identifier to the bypass path without routing any subsequent control frames associated with the LSP identifier to the bypass path. | 2009-10-29 |
20090268740 | MEMORY ORGANIZATION IN A SWITCHING DEVICE - A network device switches variable length data units from a source to a destination in a network. An input port receives the variable length data unit and a divider divides the variable length data unit into uniform length data units for temporary storage in the network device. A distributed memory includes a plurality of physically separated memory banks addressable using a single virtual address space and an input switch streams the uniform length data units across the memory banks based on the virtual address space. The network device further includes an output switch for extracting the uniform length data units from the distributed memory by using addresses of the uniform length data units within the virtual address space. The output switch reassembles the uniform length data units to reconstruct the variable length data unit. An output port receives the variable length data unit and transfers the variable length data unit to the destination. | 2009-10-29 |
20090268741 | ACCESS DEVICE AND METHOD FOR COMMUNICATION BETWEEN MASTER SHELF AND SLAVE SHELF - A method and apparatus for communication between the master shelf and the slave shelf of an access device is provided. The method includes these a main control board of the master shelf configures a Media Access Control (MAC) address for a main control board of the slave shelf, the main control board of the master shelf configures a MAC address for a service board of the master shelf; and the main control board of the slave shelf configures a MAC address for a service board of the slave shelf, and communication is performed between the main control board of the master shelf and the main control board of the slave shelf, and between the main control board of the master shelf and the service board through the configured MAC address, where the MAC address includes information about the location of the main control board or the service board. | 2009-10-29 |
20090268742 | SESSION RELAY DEVICE AND SESSION RELAY METHOD - A session relay device which can reliably send a data packet resent from a source to a destination without the need for reconfiguring and dividing a segment is supplied. Session relay device | 2009-10-29 |
20090268743 | Data transmission bridge device and control chip thereof for transmitting data - A data transmission bridge device for transmitting data that adheres to USB specification for transmitting data and includes: a first connecting interface, a second connecting interface, and a control chip. The first connecting interface is used for connecting a first host device, and the second connecting interface is used for connecting a second host device or a slave device. The control chip connects the first connecting interface and the second connecting interface, and further includes two transmission paths. The control chip detects which device is connecting to the second connecting interface, and switch to select one of the two transmission paths for transmitting data between the first connecting interface and the second connecting interface. Therefore, the present invention can achieve the purpose that the host device can bridge and transmit data with any other device conveniently. | 2009-10-29 |
20090268744 | Gateway for Data Transfer Between Serial Buses - A gateway for data transfer between serial buses, including multiple communication modules that are each provided for connection of one serial bus, and that carry out a conversion between data packets and data words, a bus master that, via an internal control bus, controls a word-based transfer of data via an internal data bus between two communication modules, the bus master applying a source address via a source address bus to an internally transmitting first communication module, and a destination address via a separate destination address bus to an internally receiving second communication module, data received in data packets by the first communication module via a first serial bus connected thereto being transferred from the first communication module directly without buffering, in word-based fashion in one or more data words, via the internal data bus to the second communication module, which delivers these transferred data, in data packets, via a second serial bus connected to the second communication module. | 2009-10-29 |
20090268745 | DISTRIBUTED WIRELESS PACKET ASSEMBLY - Distributed assembly of data packets into messages at a group of interface devices that receive data packets from within a coverage area. Each interface device in the group will take ownership of a sequence of data packets forming a message when a data packet of the message meeting predetermined criteria is received by that interface device. Once an interface device takes ownership of a sequence of data packets, it sends a request to the other interface devices for any missing data packets of the sequence that the ownership claiming interface does not have, and then assembles message upon receiving all the data packets of the sequence. | 2009-10-29 |
20090268746 | COMMUNICATION SYSTEM, COMMUNICATION METHOD, NODE, AND PROGRAM FOR NODE - In the case where a terminal under an RPR node ( | 2009-10-29 |
20090268747 | COMMUNICATION APPARATUS - To provide a communication apparatus which is capable of voluntarily controlling, according to its own reception capability, data transmission traffic, while reducing the burden for the control. The communication apparatus includes: a communication unit ( | 2009-10-29 |
20090268748 | METHOD, APPARATUS AND SYSTEM FOR A STACKABLE ETHERNET SWITCH - Implementation of non-blocking switch stacking capability for a switch device using a plug-in stacking module to connect to the switch device. In one embodiment, the plug-in stacking module receives switched data from one switch means of the connected switch device and switches the received switch data to another switch means of the same switch device. In another embodiment, switching configurations are changed so that operation of the switch device in combination with the plug-in stacking module increases a total number of ports for which non-blocking switching is supported. | 2009-10-29 |
20090268749 | ENHANCED CMTS FOR RELIABILITY, AVAILABILITY, AND SERVICEABILITY - A Cable Modem Termination System (CMTS) is partitioned into Line Cards, I/O Cards, and a midplane to provide enhanced Reliability, Availability, and Serviceability. Each I/O Card provides a cabling interface for coupling an assigned Line Card to other portions of a Hybrid-Fiber-Coax Network. A plurality of RF signals is coupled via connectors between each Line Card and a corresponding I/O Card, via the midplane. This permits a Line Card to be removed for servicing without requiring recabling of the corresponding I/O Card. Preferably, a rectangular-multi-pin collinear connector-cascade (Line Card jack, midplane double-plug, and I/O Card jack) is used to couple the plurality of RF signals. The connector-cascade is configured with protective RF ground pins adjacent and surrounding each of a plurality of RF signal pins. This approach permits each Line Card to be removed or inserted in a single action, without attention to individual RF interconnects, yet meets all system RF requirements while using relatively inexpensive connectors. The I/O Cards preferably include a distributed backup bus that permits one of the Line Cards in the CMTS to serve as a designated backup. The backup bus enables assignment of the designated backup Line Card to the I/O Card associated with a failing Line Card, without requiring recabling of any I/O Card. In conjunction with a signal processing architecture that permits dynamically programmable channel assignments, the backup bus facilitates rapid and fully automated failover. The Line Cards are preferably further partitioned into easily replaceable sections, including IF-to-RF and signal processing modules. | 2009-10-29 |
20090268750 | Generic Access Performance Abstraction for Access Selection - The invention provides methods method for access selection in a Multi-Access Network offering a plurality of Access Technologies (AT). The device may comprises a Multi Access Management entity (MAM) and a plurality of Generic Link Layer Entities (GLL) associated to a plurality of Accesses (A) according to said plurality of Access Technologies (AT). The access selection comprises an Access determination and an Access configuration. In a first step a Generic Link Layer Entity (GLL) determines one or more Generic Performance Metrics (GPM) corresponding to one or more configurations of the Access (A). The Generic Link Layer Entity (GLL) sends the determined one or more Generic Performance Metrics (GPM) corresponding to one or more configurations of the access (A) to the Multi Access Management entity (MAM). The Multi Access Management entity (MAM) determines from received Generic Performance Metrics (GPM), which Access (A) offers a configuration (GPM), which is suited for an application/bearer requirements. Then, said Multi Access Management entity (MAM) sends the determined configuration to the Generic Link Layer Entity (GLL) associated to the determined Access (A). The determined Generic Link Layer Entity (GLL) configures the Access (A) based on the determined configuration received from the Multi Access Management entity (MAM). Furthermore, the invention relates to corresponding devices, modules and software. | 2009-10-29 |
20090268751 | Supporting Multiple Logical Channels In A Physical Interface - A supervisory communications system (such as, a headend cable modem termination system) manages communications with a plurality of remote communications devices (such as, a cable modem). The supervisory system enables each of its physical channels to have multiple logical channels, with each logical channel having differing channel parameters or operating characteristics. As a result, different types of communication devices are permitted to coexist on the same physical spectrum. In other words, a communications device using, for example, spread spectrum modulation technologies require different operating characteristics than a communications device using, for example, time division multiplexing technologies. Although physical layer transmissions from these communications devices are not compatible, the present invention provides methodologies and/or techniques that define multiple logical channels that allow these communications devices to share the same physical spectrum of a transmission medium (such as, a HFC cable plant, wireless path, etc.) and send upstream transmissions to a single upstream receiver. | 2009-10-29 |
20090268752 | METHOD, APPARATUS AND INTEGRATED CIRCUIT FOR CONTROLLING TRANSMISSION RATE - A plurality of PLC adapters, such as a master | 2009-10-29 |
20090268753 | METHODS AND APPARATUS FOR INFORMATION MANAGEMENT SYSTEMS - Methods and apparatus for information management systems according to various aspects of the present invention operate in conjunction with a system interface to communicate with an external system, such as a weapon, and a network interface to communicate with a node connected to a network, such as the Global Information Grid. The information management system may further include a data processing system in communication with the system interface and the network interface to enable the external system to provide and consume services to and from a node connected to network. | 2009-10-29 |
20090268754 | METHODS, DEVICES, AND COMPUTER PROGRAM PRODUCTS FOR REMOTELY CONTROLLING OPERATIONS OF DIGITAL MEDIA DEVICES USING A MOBILE TERMINAL - A method of controlling operations of a plurality of digital media devices on a network that are configured to communicate using a first communications protocol includes establishing a wireless connection between a mobile terminal and a digital media control point device. The digital media control point device is configured to communicate with the plurality of digital media devices via the network using the first communications protocol. A command to control an operation of at least one of the plurality of digital media devices is transmitted from the mobile terminal and is received at the digital media control point device via the wireless connection using a second communications protocol that is different from the first communications protocol. The received command is correlated to a corresponding command in accordance with the first communications protocol, and is transmitted to the at least one of the plurality of digital media devices via the network using the first communications protocol. Data from the at least one of the plurality of digital media devices is received at the digital media control point device via the network using the first communications protocol, and at least a portion of the data is transmitted to the mobile terminal via the wireless connection using the second communications protocol. Related devices and computer program products are also discussed. | 2009-10-29 |
20090268755 | CODEC CONVERTER, GATEWAY DEVICE, AND CODEC CONVERTING METHOD - A codec converter includes: a plurality of codec converting units each configured to convert first encoded media data encoded using a first encoding mode into second encoded media data encoded using a second encoding mode different from the first encoding mode; a media data extracting unit configured to extract input-encoded media data from an input packet, and to generate conversion information that identifies a desired format conversion; a resource allocation unit configured to route the input-encoded media data to a selected one of the plurality of codec converting units based on the conversion information; and a packet reassembling unit configured to receive output-encoded media data from the selected one of the plurality of codec converting units, and to assemble the output-encoded media data into an output packet. Each of the plurality of codec converting units selects a different pair of first and second encoding modes. | 2009-10-29 |
20090268756 | Method for Reserving Bandwidth in a Network Resource of a Communications Network - A method for reserving bandwidth in a network resource in a communication network with network links which the network resource includes, manages a transmission channel for a service, varies the bandwidth for each network resource on the transmission channel on the basis of a statistical value, and defines and manages network links with different bandwidth for all network capacities involved in the service. | 2009-10-29 |
20090268757 | Data transmission apparatus and data transmission method - An input signal INDATA inputted to a sender-side interface portion is encoded by an encoder, and a transmission signal generated by the encoding is transmitted to a receiver-side interface portion through two signal transmission lines. The input signal INDATA is encoded in such a manner that the logic level of the transmission signal transmitted through at least one of the two signal transmission lines is changed in any two consecutive elementary periods. The receiver-side interface portion is provided with a clock receiver, and a clock signal is generated based on the change of the transmission signals supplied from the two signal transmission lines. | 2009-10-29 |
20090268758 | METHOD, SYSTEM AND APPARATUS FOR SYNCHRONIZING TIME IN TIME-DIVISION MULTIPLEXING SYSTEM - A method, system and apparatus for synchronizing time in a time-division multiplexing (TDM) system are disclosed. The method may include: receiving time synchronization information carried in an idle timeslot, where the idle timeslot is in a multiframe of an E1 signal or T1 signal; and synchronizing time according to the time synchronization information carried in the timeslot. The present disclosure may synchronize the time of the communication device in the TDM system while saving the cost, eliminating the necessity of installation and improving the stability of the time synchronization. | 2009-10-29 |
20090268759 | SYSTEM AND METHOD FOR DETECTING AND CORRECTING A FALSE EMBEDDED HEADER - There is provided a system and method for detecting and correcting a false embedded header. More specifically, in one embodiment, there is provided a method, comprising locating an ancillary data packet in a data stream based on a first sequence of data indicative of the ancillary data packet, determining if the ancillary data packet contains a second sequence of data indicative of sync information, and altering the second sequence of data to not indicate sync information if the ancillary data packet does contain the second sequence of data. | 2009-10-29 |
20090268760 | ASYNCHRONOUS DATA PIPE FOR AUTOMATICALLY MANAGING ASYNCHRONOUS DATA TRANSFERS BETWEEN AN APPLICATION AND A BUS STRUCTURE - An asynchronous data pipe (ADP) automatically generates transactions necessary to complete asynchronous data transfer operations for an application over a bus structure. The ADP includes a register file which is programmed and initiated by the application. The register file includes the bus speed, transaction label, transaction code, destination node identifier, destination offset address, length of each data packet, packet counter, packet counter bump field, control field and a status field. During a data transfer operation, the ADP generates the transactions necessary to complete the operation over the appropriate range of addresses, using the information in the register file as a template. The ADP increments the value in the destination offset address field for each transaction according to the length of each data packet, unless the incrementing feature has been disabled and the transactions are to take place at a fixed address. The packet counter represents the number of transactions remaining to be generated. The packet counter value is decremented after each packet of data is transferred. The application can increment the packet counter value by writing to the packet counter bump field. A multiplexer is included within a system having multiple ADPs for multiplexing the information from the ADPs onto the bus structure. A demultiplexer is included within a system having multiple ADPs for routing information from the bus structure to the appropriate ADP. | 2009-10-29 |
20090268761 | Method for mode control in multimode semiconductor waveguide lasers - One embodiment is a wide stripe semiconductor waveguide, which is cleaved at a Talbot length thereof, the wide stripe semiconductor waveguide having facets with mirror coatings. A system provides for selective pumping the wide stripe semiconductor waveguide to create and support a Talbot mode. In embodiments according to the present method and apparatus the gain is patterned so that a single unique pattern actually has the highest gain and hence it is the distribution that oscillates. | 2009-10-29 |
20090268762 | Optical intergrated device - An object of the invention is to provide an optical integrated device which enables to supply a wide range of variable wavelength and to reduce the coupling loss. The optical integrated circuit chip ( | 2009-10-29 |
20090268763 | Frequency Stabilized Laser Source - A laser arrangement is provided, in which a Lyot filter arrangement is operative to effect single mode operation. The birefringent element of the Lyot filter arrangement has a cavity folding mirror on one side thereof and a polarizing element on another side thereof, such that the free spectral range of the Lyot filter is improved. Preferably, the Lyot filter arrangement and the laser gain material are located in different branches of the folded cavity. | 2009-10-29 |
20090268764 | Multisectional laser - Disclosed is a semiconductor laser in which the substrate comprises at least three independent functional sections in the direction of light wave propagation, said functional sections serving different functions and being individually triggered by means of electrodes via electrode leads. An intensification zone, a grid zone, and a phase adjustment zone are provided as functional sections. The light wave is optically intensified in the intensification zone while the phase of the advancing and returning wave is adjusted in the phase adjustment zone. The grid zone is used for selecting the wavelength and adjusting the intensity of coupling between the intensification zone and the phase adjustment zone. | 2009-10-29 |
20090268765 | Intra-Cavity Phase Modulated Laser Based on Intra-Cavity Depletion-Edge-Translation Lightwave Modulators - Use of depletion edge translation as an in cavity phase modulation mechanism in lasers. Aspects of the invention are especially relevant (without limitation) in transmitters for extended reach comprising an intra cavity phase and amplitude modulated laser for generation of a frequency modulated signal and a passive optical spectrum reshaper element, sometimes referred to as a chirp modulated laser. Such techniques may be carried out as disclose herein by adopting predetermined doping profiles and applying predetermined voltage to the laser cavity, and more preferably to a phase section in or adjoining the laser cavity. | 2009-10-29 |
20090268766 | OPTICAL TRANSMITTER APPLICABLE TO BURST SIGNAL AND METHOD FOR CONTROLLING THE SAME - An optical transmitter and a method to control the transmitter are disclosed, in which the optical output may be substantially maintained even in the inactive state of the input burst signal. The optical transmitter includes the APC feedback control and the detector that senses the active and inactive states of the input burst signal. When the transition to the inactive state is detected, the controller enters the second APC mode in which only the bias current is adjusted so as to maintain the optical output to be a preset value. The normal APC feedback control may be recovered after a preset period from the practical transition of the input burst signal from the inactive state to the active state. | 2009-10-29 |
20090268767 | DC COUPLED DRIVER WITH ACTIVE TERMINATION - A DC coupled driver is described for modulating a vertical cavity surface emitting laser at high speeds with active termination. High speed and low total power dissipation is achieved by improving the driver immunity to pulse reflections, which can arise due to impedance mismatch between the driver output impedance and the VCSEL impedance. The rise and fall times of the driver may be adjusted for particular applications. The driver may be fabricated using a choice of bipolar, NMOS and PMOS technologies. | 2009-10-29 |
20090268768 | METHOD OF MAKING NITRIDE SEMICONDUCTOR LASER, METHOD OF MAKING EPITAXIAL WAFER, AND NITRIDE SEMICONDUCTOR LASER - A method of making a nitride semiconductor laser comprises forming a first InGaN film for an active layer on a gallium nitride based semiconductor region, and the first InGaN film has a first thickness. In the formation of the first InGaN film, a first gallium raw material, a first indium raw material, and a first nitrogen raw material are supplied to a reactor to deposit a first InGaN for forming the first InGaN film at a first temperature, and the first InGaN has a thickness thinner than the first thickness. Next, the first InGaN is heat-treated at a second temperature lower than the first temperature in the reactor, while supplying a second indium raw material and a second nitrogen raw material to the reactor. Then, after the heat treatment, a second InGaN is deposited at least once to form the first InGaN film. | 2009-10-29 |
20090268769 | SURFACE-EMISSION LASER DIODE AND SURFACE-EMISSION LASER ARRAY, OPTICAL INTERCONNECTION SYSTEM, OPTICAL COMMUNICATION SYSTEM, ELECTROPHOTOGRAPHIC SYSTEM, AND OPTICAL DISK SYSTEM - A surface-emission laser diode includes an active layer, a pair of cavity spacer layers formed at both sides of the active layer, a current confinement structure defining a current injection region into the active layer, and a pair of distributed Bragg reflectors opposing with each other across a structure formed of the active layer and the cavity spacer layers, the current confinement structure being formed by a selective oxidation process of a semiconductor layer, the pair of distributed Bragg reflectors being formed of semiconductor materials, wherein there is provided a region containing an oxide of Al and having a relatively low refractive index as compared with a surrounding region in any of the semiconductor distributed Bragg reflector or the cavity spacer layer in correspondence to a part spatially overlapping with the current injection region in a laser cavity direction. | 2009-10-29 |
20090268770 | Gain Clamped Optical Device For Emitting LED Mode Light - A gain clamped optical device includes a semiconductor stack and a resonant cavity configured to emit stimulated light. A window created in the optical device is configured to emit the stimulated light in an LED mode. | 2009-10-29 |
20090268771 | Multi-Stripe Laser Diode Desings Which Exhibit a High Degree of Manufacturability - The present application is directed at providing a new lasing device having increased production yields over other single mode laser devices. In particular, a semiconductor lasing device is provided having at least two lasing devices formed on a common substrate. The lasing device is arranged so that in use a preferred lasing device is operational and remaining lasing devices are redundant. This redundancy improves the production yield since only one of the lasing devices needs to function correctly as the others are unused. | 2009-10-29 |
20090268772 | Semiconductor laser apparatus - A wavelength variable laser smaller in size than the conventional one can be achieved by arranging a gain chip, an etalon filter and a fifth reflective mirror on an AlN submount and longitudinally integrating the gain chip in which a 45° mirror and a lens are integrated and the etalon filter. A laser cavity has a structure in which light passes through an active layer from a first reflective mirror realized by an end surface of the gain chip, is reflected by the 45° mirror at an angle of 90° and then passes through the lens. The light having passed through the lens is converted into parallel light, passes through the etalon filter and reaches the fifth reflective mirror and is then reflected. The reflected light returns through the same optical path and reaches the first reflective mirror realized by the end surface of the gain chip. | 2009-10-29 |
20090268773 | SURFACE EMITTING LASER ELEMENT, SURFACE EMITTING LASER ELEMENT ARRAY, METHOD OF FABRICATING A SURFACE EMITTING LASER ELEMENT - A surface emitting laser element that includes a cylindrical mesa post in which a plurality of semiconductor layers including an active layer is grown and that emits a laser light in a direction perpendicular to a substrate surface, the surface emitting laser element including a dielectric multilayer film on a top surface of the mesa post in at least a portion over a current injection area of the active layer; and a dielectric portion that includes layers fewer than layers of the dielectric multilayer film and that is arranged on a portion excluding the portion over the current injection area on the top surface of the mesa post and on at least part of a side surface of the mesa post. | 2009-10-29 |
20090268774 | Vertical cavity surface emitting laser and method of manufacturing the same - A Vertical Cavity Surface Emitting Laser capable of decreasing the lowering of the yield due to displacement and separation of a pedestal without enormous increase of the threshold value and more difficult manufacturing process is provided. A base of a mesa spreads over the top face of a lower DBR layer. The base is a non-flat face in which end faces of a plurality of layers are exposed. The non-flat face is generated due to etching unevenness in forming the mesa, and is in a state of a step in which end faces of a low-refractive index layer and a high-refractive index layer included in the lower DBR layer are alternatively exposed. At least one of the layers exposed in the non-flat face in the plurality of low-refractive index layers included in the lower DBR layer is an oxidation inhibition layer. | 2009-10-29 |
20090268775 | Unstable laser disk resonator - An unstable laser disk resonator combines the output laser power of multiple laser disks to produce a high power, single transverse mode laser output beam, which is near diffraction limited. | 2009-10-29 |
20090268776 | Piezoelectric Resonator and Temperature Sensor - An object of the present invention is to provide a piezoelectric resonator provided with a electrode on the surface of a plate piezoelectric blank, which excites the piezoelectric blank, the piezoelectric resonator being capable of suppressing deterioration of an electrode under high temperature circumstances. Another object is to provide a temperature sensor suitable for temperature measurement at high temperatures. | 2009-10-29 |
20090268777 | Thermal code output circuit and semiconductor memory device - A thermal code output circuit is provided, comprising a pulse signal generator configured to receive multiple period signals and generate a pulse signal in response to a test mode signal, a thermal code output unit configured to output multiple thermal codes in response to the pulse signal, and a strobing signal output unit configured to output the pulse signal or a reference voltage selectively as a strobing signal in response to the test mode signal. | 2009-10-29 |
20090268778 | TEMPERATURE DETECTOR AND THE METHOD USING THE SAME - A temperature detector comprises a first current mirror, a second current mirror, a first pulse generator, a second pulse generator, a phase detector and a controller. The current of the first current mirror is in variation with temperature, but the current of the second current mirror is not. If the output pulse of the first pulse generator appears earlier than that of the second pulse generator, the controller enhances the output current of the second current mirror. If the output pulse of the first pulse generator appears later than that of the second pulse generator, the controller decreases the output current of the second current mirror. | 2009-10-29 |
20090268779 | TEMPERATURE SENSOR ELEMENT AND METHOD OF MANUFACTURING THE SAME - A temperature sensor element | 2009-10-29 |
20090268780 | TEMPERATURE MEASUREMENT DEVICE HAVING SEPARABLE THERMAL COUPLING WIRES - A temperature measurement device includes a first member forming a first claw at an end thereof and a second member forming a second claw at an end thereof. The second claw faces the first claw, and can move towards and away from the first claw. A spring is provided between the first member and the second member for generating force to move the second claw towards the first claw. A pair of thermal coupling wires are fixed on the first and second claws, respectively. Thus an object needed to be measured can be arranged between the pair of thermal coupling wires and snugly engage the thermal coupling wires by the elastic force of the deformed spring. | 2009-10-29 |
20090268781 | UWB TRANSMITTING/RECEIVING APPARATUS, UWB TRANSMITTING/RECEIVING TERMINAL APPARATUS, AND UWB TRANSMITTING/RECEIVING SYSTEM - A UWB transmitting/receiving apparatus, a UWB transmitting/receiving terminal apparatus and a UWB transmitting/receiving system wherein a possibly reduced number of data retransmissions is achieved so as to raise the transmission efficiency. A UWB transmitting/receiving apparatus ( | 2009-10-29 |
20090268782 | CFR ESTIMATION METHOD FOR MULTI-BAND OFDM-BASED UWB SYSTEMS - A multi-stage CFR estimation method for multi-band OFDM-based UWB systems is provided. The method comprises obtaining a CFR estimation ĥ | 2009-10-29 |
20090268783 | WIRELESS COMMUNICATIONS SYSTEMS AND/OR METHODS PROVIDING LOW INTERFERENCE, HIGH PRIVACY AND/OR COGNITIVE FLEXIBILITY - Communications systems and/or methods are disclosed that can provide extreme privacy, cognitive radio capability, robustness to fading and interference, communications performance associated with M-ary orthonormal signaling and/or high multiple-access capacity. Embodiments can use spread-spectrum waveforms that are featureless, devoid of chipping and devoid of cyclostationary signatures, statistically indistinguishable from thermal noise and able to cognitively fit within any available frequency space (narrow-band, broad-band, contiguous, non-contiguous). Some embodiments maintain all desirable features of classical direct-sequence spread-spectrum communications while providing new dimensions that are important to communications systems. Embodiments of the invention can provide M-ary orthonormal signaling with chipless spread-spectrum waveforms to provide extreme covertness and privacy. Moreover, embodiments of the invention may be used to cognitively and covertly utilize spectrum resources at minimal impact to incumbent users. Further embodiments may be used to provide minimum interference, opportunistic, “white space spectrum” communications. | 2009-10-29 |
20090268784 | MULTI-BAND OFDM RECEIVER - A wireless communication arrangement includes a transmitter that transmits a signal having a carrier that repeatedly and sequentially hops through a first sequence of frequencies. A receiver includes a mixer having an antenna signal input for receiving an antenna signal, and a local oscillator for generating a local oscillator signal and providing the local oscillator signal to a local oscillator input of the mixer. The local oscillator signal repeatedly and sequentially hops through a second sequence of frequencies having fewer members than the first sequence of frequencies and the repetition frequency with which the local oscillator signal hops through the second sequence of frequencies is substantially equal to the repetition frequency with which the carrier hops through the first sequence of frequencies. Preferably, the receiver includes an ADC that is sampled at a rate greater than twice the bandwidth of the antenna signal. | 2009-10-29 |
20090268785 | Mobile Communication Terminal, Synchronization Judging Circuit Used in the Mobile Communication Terminal, Control Method, Synchronization Judging Control Program - Disclosed is a mobile communication terminal employing a code division multiple access scheme, in which when it is decided that the common channel level is equal to or higher than a third threshold (common channel level threshold), an RLF decision control unit compares the SIR data with a first threshold and a second threshold to decide in sync state/out-of sync state between the local spread code and the reception spread code and outputs the decision signal. When it is decided that the common channel level is lower than the third threshold, the first threshold and the second threshold are set to the same value. In this state, when it is decided that the level of the SIR data is lower than the first threshold (=second threshold), the decision signal corresponding to an out-of sync state is output immediately after a predetermined delay time elapses, thereby reducing the power dissipation. | 2009-10-29 |
20090268786 | Mobile Communication System and Wireless Apparatus to be Used for the Same - A mobile communication system capable of improving the reception characteristic using a small circuit size and low power consumption is provided. The channel vector estimating section | 2009-10-29 |
20090268787 | Method and Apparatus for Compensating for Processing Timing Misalignment in a Communication Receiver - According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal. | 2009-10-29 |
20090268788 | SYSTEM AND/OR METHOD FOR DETECTING MULTI-TONE JAMMING - The subject matter disclosed herein relates to a system and method for processing a signal received from a satellite positioning system (SPS) in the presence of a multi-tone jammer. In one particular implementation, processing of a signal may be altered in response to detection of one or more conditions. | 2009-10-29 |
20090268789 | LOW I/O BANDWIDTH METHOD AND SYSTEM FOR IMPLEMENTING DETECTION AND IDENTIFICATION OF SCRAMBLING CODES - A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code's X-component being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding X-component segment of the master scrambling code. For every sixteen (16) chips, a new X-component segment of the master scrambling code is introduced into one of the correlators, a X-component segment of the master scrambling code is dropped from another correlator, and X-component segments of the master scrambling code are sequentially shifted or propagated through the remaining correlators; and concurrent correlations are performed by the correlators using their respective corresponding X-component segments of the master scrambling code and newly received signals. | 2009-10-29 |
20090268790 | Methods and apparatus for network coding in a communication system - A system and method for relaying communications in a wireless communication network. A relay station capable of relaying wireless communications includes a plurality of receiver antennas and a plurality of transmitter antennas. The plurality of receiver antennas is operable to receive, in a first time interval, a first communication from a base station and a second communication from a subscriber station. The plurality of transmitter antennas is operable transmit a third communication to the base station and the subscriber station in a second time interval. The relay station also includes a network encoder. The network encoder is configured to generate a combined symbol constellation. The combined symbol constellation is generated by combining a first symbol constellation transmitted in said first communication with a second symbol constellation transmitted in said second communication. Further, the third communication comprises said combined symbol constellation. | 2009-10-29 |
20090268791 | System and Method for Frequency Pushing/Pulling Compensation - A system and method for frequency pushing/pulling compensation in phase-locked loops including a method for cancelling frequency push/pull in an oscillator of a transmitter. The method includes computing an error signal from a signal of a phase locked loop, wherein the error signal includes an aggressor signal. Transfer characteristics are computed for the aggressor signal. A transmitted signal is filtered using the transfer characteristics to produce a correction term. The correction term is applied to a frequency control word being provided to the oscillator. | 2009-10-29 |
20090268792 | METHOD FOR REDUCING INTERFERENCE IN A RADIO NETWORK EQUIPMENT AND EQUIPMENT PERFORMING THE METHOD - Method and system for reducing interference between adjacent antennas wherein one antenna transmits a first signal from a transmitter equipment and a second antenna receives a second signal by a receiver equipment, the first and the second signals may have the same frequency, and the angular discrimination between the TX antenna and the RX antenna in the same location is low. The transmitter equipment inputs an intermediate frequency contribution of the first signal into a cross-polar interference canceller, included in the receiver equipment, for reducing a co-channel interference in the receiver equipment caused by the first and the second signals, wherein the cross-polar interference canceller selects a desired signal from the two signals received so as to reduce said interference. | 2009-10-29 |
20090268793 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication device is provided that includes a first transceiver and a second transceiver. The first transceiver transmits/receives a first signal corresponding to a first communication standard in a frame of the first communication standard. The second transceiver, with a clock synchronized with the first transceiver, processes a second signal corresponding to a second communication standard and transmits/receives the second signal in a frame of the first communication standard. | 2009-10-29 |
20090268794 | COMMUNICATION SYSTEM AND METHOD FOR OPERATING A COMMUNICATION SYSTEM - The invention relates to a communication system ( | 2009-10-29 |
20090268795 | METHOD, ARRANGEMENT AND DEVICE FOR TRANSMITTING INFORMATION BETWEEN A CENTRAL UNIT AND AT LEAST ONE DECENTRALIZED UNIT IN A COMMUNICATION NETWORK - The invention relates to a method, an arrangement and a device for transmitting information between a central unit (DSLAM) and at least one decentralised unit (TN | 2009-10-29 |
20090268796 | TRANSCEIVER ARCHITECTURE - A transmitter and a receiver apparatus suitable for a radio modem. According to an embodiment, the receiver apparatus comprises an input stage, an intermediate frequency stage and a demodulation and output stage. The input stage receives a signal from a transducer (e.g. a radio antenna) and generates a receive signal for the intermediate frequency stage. The intermediate frequency stage is configured to at least partially down-convert the receive signal for the demodulation and output stage. The demodulation stage is configured to demodulate the receive signal and generate a corresponding digital receive output signal. According to an embodiment, the transmitter apparatus comprises a transmitter signal modulation stage and a transmitter stage. | 2009-10-29 |
20090268797 | NONLINEAR DEVICE DETECTION - Data is collected and interpreted in response to one or more transmitted signals to determine if an interfering device is present. If an interfering device is present, a message is generated and presented to a user indicating, for example, that the installation of a micro-filter is appropriate. The system can then determine if the micro-filter was installed properly and, for example, commence communication or, if the micro-filter(s) did not solve the problem, initiate communication with or contact a technician. | 2009-10-29 |
20090268798 | WIRELESS COMMUNICATION UNIT AND METHOD FOR CHANNEL ESTIMATION - A method is provided for estimating at least one offset of a communication in a multicarrier communication system. The method comprises receiving a plurality of subcarriers wherein the plurality of subcarriers contain the subcarrier that is subject to the distortion; and generating a plurality of first channel estimates for a respective plurality of received subcarriers that are not subject to the distortion. The method further comprises processing a number of the plurality of first channel estimates for the respective plurality of received subcarriers that are not subject to the distortion to generate a second channel estimate for the subcarrier that is subject to the distortion; and estimating an offset associated with the subcarrier that is subject to the distortion. | 2009-10-29 |
20090268799 | EQUALIZATION SYSTEM AND METHOD THEREOF - An equalization system used in a communication receiver has multiple equalization stages. A front equalizer supplies equalization output to a feed back filter in a rear equalizer to speed initialization of the rear equalizer. In addition, the rear equalizer supplies decision output to the front equalizer to estimate errors so as to provide more accurate tap coefficient adjustments. Both the front equalizer and the rear equalizer can be implemented with iterative equalizers to further enhance equalization performance. | 2009-10-29 |
20090268800 | DEMODULATION CIRCUIT, DEMODULATION METHOD, PROGRAM, AND RECEPTION APPARATUS - A demodulation circuit including: a first error calculation section configured to calculate a first error in accordance with a blind method; a second error calculation section configured to calculate a second error in accordance with a DD method; an update section configured to update filter coefficients for first and second filters based on the first or second error, the first filter filtering an input signal to generate a first signal, the second filter filtering a signal representing a hard decision value for a post-equalization signal to generate a second signal; a control section configured to, in the case where the update section is updating the filter coefficients based on the second error, controlling the filter coefficients to be updated based on the first error, when the degree of the second error has exceeded a first threshold; and a generation section configured to generate the post-equalization signal based on the first and second signals. | 2009-10-29 |
20090268801 | Limiter Based Analog Demodulator - A phase detector includes a decimator to decimate a digitized in-phase signal and a digitized quadrature signal to N times a symbol rate, where N is an integer greater than one. A burst detector to detect bursts in an output of the decimator. A carrier offset block to determine an offset angle based on an output of the burst detector. A rotator to generate a rotated signal by rotating the output of the decimator based on the offset angle determined by the carrier offset block. An equalizer to perform coherent demodulation of the rotated signal. | 2009-10-29 |
20090268802 | DECISION FEEDBACK EQUALIZER HAVING ADJUSTING DEVICE AND METHOD THEREOF - A decision feedback equalizer having a adjusting device and method thereof are described. The decision feedback equalizer having an adjusting device includes a feed-forward filter, a decision device, a feedback filter, the adjusting device, and a summation device. The feed-forward filter generates a forwarding signal (S | 2009-10-29 |
20090268803 | Channel Estimation for High Doppler Mobile Environments - An apparatus and method of applying a fast algorithm to a pilot-based channel estimation process includes receiving, in a receiver, a signal comprising information bits transmitted in a wireless channel, executing a pilot-based channel estimation process running on a decision-directed turbo estimation procedure having a p structure for a vector of pilots and an upper bound N for a channel spread based on a feedback of detected information bits via OFDM, encoding the detected information bits, re-encoding the detected information bits at a decoder output, re-constructing and subtracting an ICI term from the received signal, modulating the detected information bits, estimating channel symbols in a per-carrier basis based on a diagonal matrix of a full matrix involved in the pilot-based channel estimation, and performing training of the wireless channel based on an entire vector of the channel symbols. | 2009-10-29 |
20090268804 | Delayed decision feedback sequence estimator - Disclosed is a delayed decision feedback sequence estimator comprising a delayed decision feedback sequence estimator main unit including DDFSE computing unit group including (L+M) DDFSE computing units, equal in number to a length of each of plurality of blocks into which a received data symbol sequence is divided; wherein (L+M) DDFSE computing units are connected in a pipeline configuration to execute delayed decision feedback sequence estimation of the blocks in parallel; and an edge effect detection and correction circuit that detects an edge effect due to processing the delayed decision feedback sequence estimation of the separated block and corrects a relevant bit error. | 2009-10-29 |
20090268805 | METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO - A method and apparatus for encoding and decoding video performs transformation of at least a portion of a high-resolution video frame into a low resolution image and a plurality of enhancement data sets, encodes the low resolution image as a primary coded picture in a bitstream format and encodes each of the plurality of enhancement data sets as a different redundant coded picture in the bitstream format. For decoding, a decoded low resolution image and a plurality of decoded enhancement data sets are generated and an inverse transform is performed to construct a decoded high-resolution mage. The primary coded picture and a redundant coded picture may be formatted according to the ITU-T H.264 Advanced Coding specification. The transform may be a polyphase or a sub-band transform. | 2009-10-29 |
20090268806 | Method of transmitting and receiving broadcasting signal and apparatus for receiving broadcasting signal - A method of receiving a broadcasting signal in an apparatus for receiving the broadcasting signal, is disclosed. The method includes receiving a first encoding data descriptor describing first encoding data of contents having the first encoding data and second encoding data, in non-real time, receiving the first encoding data in non-real time, according to the first encoding data descriptor, and decoding the first encoding data received in non-real time and the second encoding data received in real time together, according to the first encoding data descriptor, and outputting the contents. | 2009-10-29 |
20090268807 | MULTIMEDIA BROADCAST FORWARDING SYSTEMS AND METHODS - In various embodiments, communication apparatus and methods for providing robust communications are disclosed. For example, an exemplary communication apparatus for distributing media to one or more receiving apparatus may include receiving circuitry configured to receive a first wireless multimedia broadcast signal containing at least a first media stream, transmitting circuitry configured to wirelessly transmit one or more individual media streams simultaneously to the one or more receiving apparatus using one or more wireless transmit signals, and decision circuitry configured to control the transmitting circuitry to transmit the first media stream to at least one receiving apparatus using at least one wireless transmit signal type based on a forward-link data capacity of each wireless channel between the transmitting circuitry and each receiving apparatus. | 2009-10-29 |
20090268808 | Novel user sensitive information adaptive video transcoding framework - A video system includes a sensitive-information generator to generate a definition of sensitive information parts (SIP) areas. The video system also includes a transcoder to transcode the SIP areas at a higher bit rate than non-SIP areas in the frames based on bandwidth available for transmitting the transcoded frames. The SIP areas are generated statically or dynamically. The video system adapts to various network conditions and utilizes the bandwidth efficiently to deliver the sensitive information of high quality and to enhance the user experience. | 2009-10-29 |
20090268809 | Method, apparatus and system for robust video transmission - A method of transmitting video data related to a sequence of video frames, includes: encoding the video frames according to a first predictive encoding to generate encoded video data, the encoded video data including a prediction error based on the difference between a portion of a current video frame in the sequence and a first predictor thereof based on a first preceding video frame in the sequence; generating auxiliary video data related to the portion of the current video frame; and transmitting the encoded video data and the auxiliary video data to a receiver, the encoded video data being transmitted over a first channel, and the auxiliary video data being transmitted over a second channel. The step of generating auxiliary video data includes calculating a correlation between the first predictor and a predetermined second predictor based on a second preceding video frame in the sequence, the second preceding video frame preceding in the sequence the first preceding video frame. | 2009-10-29 |
20090268810 | Geometric intra prediction - The use of parametric models to capture and represent local signal geometry allows a new geometric intra prediction scheme to better encode video images. The encoding scheme gives the video encoder the flexibility and scalability to match the video frame content with the desired computational complexity. It also allows the encoder to encode the images more efficiently using intra prediction because it reduces the artificial edges that occur during standard intra encoding. | 2009-10-29 |
20090268811 | Dynamic Image Reproducing Method And Device - A moving picture reproducing apparatus reproduces a moving picture file including different picture formats at a high speed. A parameter setting unit sets the number of frame α to be displayed per a unit time, a reproduction speed ratio β, a bit rate γ (α, β, and γ are real numbers). A seek distance setting unit sets a seek distance SD according to a value given by γ/α×β. An intra-frame encoded picture searching unit starts a search for a next intra-frame encoded picture at a search start position. A decoder decodes an intra-frame encoded picture found as a result of the search by the intra-frame encoded picture searching unit. The intra-frame encoded picture searching unit sets a data position ahead of a data position of the intra-frame encoded picture found by the seek distance, as a search start position to start searching for a next intra-frame encoded picture. | 2009-10-29 |
20090268812 | 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. | 2009-10-29 |
20090268813 | 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. | 2009-10-29 |
20090268814 | 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. | 2009-10-29 |
20090268815 | 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. | 2009-10-29 |
20090268816 | ADVANCED VIDEO CODING TO MULTIVIEW VIDEO CODING TRANSCODER - Systems, methods and computer program products for transcoding advanced video coding (AVC) bitstreams into multiview video coding (MVC) bitstreams are described. In some implementations, a MVC transcoder may be used to convert non-anchor pictures (e.g., at a specified temporal point) into anchor pictures by using only inter-view prediction. The MVC transcoder also may utilize inter-view reference pictures (in addition to temporal reference pictures) in the motion estimation/mode decision functions of the non-anchor pictures. The output of the MVC transcoder may be one or more MVC bitstreams each representing a different view of a same scene or image. | 2009-10-29 |
20090268817 | 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. | 2009-10-29 |
20090268818 | METHOD AND SYSTEM FOR INTEGRATING NOISE FILTERING IN PREDICTIVE VIDEO CODING - A method and system are disclosed for coding and filtering video data. The method comprises the steps of using a predictive coding technique to compress a stream of video data, integrating a noise filtering process into said predictive coding technique, and using said noise filtering process to noise filter said stream of video data while compressing said stream of video data. In the preferred embodiment of the invention, the stream of video data is comprised of a series of macroblocks, including a current macroblock and at least one reference macroblock. Also, in this preferred embodiment, the step of using a predictive coding technique includes the step of calculating the difference between the current macroblock and the at least one reference macroblock, and the step of integrating the noise filtering process includes the step of integrating the noise filtering process into said step of calculating. The invention may be used with a forward predictive code mode and with a bi-directional predictive mode. | 2009-10-29 |
20090268819 | MOTION VECTOR CALCULATION DEVICE AND MOTION VECTOR CALCULATION METHOD - The conventional technique has a problem that when a calculated global motion vector is incorrect, a search range is difference from the original one and the possibility of incorrect calculation of the motion vector becomes high and problem that the incorrect calculation of the motion vector may cause lowering of efficiency of the dynamic image encoding. A motion vector calculation device divides a global macro block into middle blocks and detects middle motion vectors for calculation of a global motion vector. Middle motion vectors considered to have abnormal values are excluded from the detected middle motion vectors. According to the remaining middle motion vectors, an accurate global motion vector is calculated. | 2009-10-29 |
20090268820 | IMAGE ENCODING APPARATUS AND IMAGE ENCODING METHOD - Since a global motion vector detector is disposed on the same chip as, for example, an image converter utilizing spatial correlations, a first problem is that an original frame is not completely reproduced in an image, since the frame to be referred to when detecting the global motion vector is an image obtained by inverse-converting a nonreversibly compression-converted image. A second problem is that, upon high-efficient image encoding, the detection process of the global motion vector is performed even when it is not necessary to detect the global motion vector. An image encoding apparatus is equipped with a mechanism for detecting a global motion vector. The mechanism is located outside an image converter that utilizes spatial correlations, such as high-frequency component removal by a DCT and round-down by a quantization, and variable encoding. | 2009-10-29 |
20090268821 | BLOCK PARALLEL AND FAST MOTION ESTIMATION IN VIDEO CODING - Block parallel fast motion estimation for blocks of a video frame is provided where encoding of video blocks can be ordered to allow concurrent encoding thereof. Furthermore, motion vector prediction can be performed concurrently for independent video blocks where requisite blocks for calculating the prediction of a given block can be previously encoded, but not all blocks depend from each other; thus, parallel motion vector estimation is possible. Additionally, a fast motion estimation algorithm can be concurrently performed on a number of video blocks to search surrounding blocks to compute motion vectors as well. The concurrent processes can leverage the parallel architecture of one or more graphical processing units (GPU). | 2009-10-29 |
20090268822 | MOTION VECTOR DETECTION BY STEPWISE SEARCH - A moving image encoding apparatus includes a motion vector detecting unit for executing from a wide and coarse search to a narrow and fine search in a plurality of steps and in a stepwise manner to detect a motion vector of each block in an input image. The motion vector detecting unit includes a block combining unit for generating a combination block, depending on a result of detection in a search step, a search use pixel extracting unit for extracting a search use pixel to be used in a next search step, from the combination block, and a second search combination block searching unit for performing the next search step with respect to the combination block using the search use pixel, and setting a detected motion vector of the combination block as the motion vector of each block of the combination block. | 2009-10-29 |
20090268823 | BOUNDARY ARTIFACT CORRECTION WITHIN VIDEO UNITS - This disclosure describes techniques for correcting artifacts that occur along a boundary of a substitute video unit generated using video unit substitution, e.g., motion-compensated video unit interpolation or extrapolation. In accordance with the techniques described in this disclosure, a frame substitution unit identifies first locations within a substitute video unit that correspond with a boundary that exists within a reference video unit and should exist within the substitute video unit, and corrects boundary artifacts in the first locations using a first boundary artifact correction technique. The frame substitution unit also identifies second locations within the substitute video unit that correspond with a boundary that exists within the substitute video unit and does not exist within the reference video unit and corrects boundary artifacts in the second locations using a second boundary artifact correction technique. | 2009-10-29 |
20090268824 | Information Processing Apparatus and Signal Transmission Method - There is provided an information processing apparatus including an encoding unit that represents input data containing mutually different first and second bit values by a plurality of first amplitude values for the first bit value and a second amplitude value that is different from the first amplitude values for the second bit value, does not take an identical value consecutively, and perform encoding so that polarity of the amplitude value is reversed for each cycle, and a transmission unit that transmits a signal encoded by the encoding unit through a predetermined transmission line. | 2009-10-29 |
20090268825 | Receiver, Transmission Mehtod and Transmission System - To reduce the influence of inter-block interference even when the order number of the channel (physically corresponding to the impulse response length of the channel) is larger than the CP length. A receiver | 2009-10-29 |
20090268826 | Time Domain Based Approach for Fast Fading Channel FFT Trigger Point Tracking in ISDB Receivers - A method of fast fading channel Fast Fourier Transform (FFT) trigger point tracking in an integrated services digital broadcasting (ISDB) receiver includes inputting a signal in a fading channel including N Orthogonal Frequency Division Multiplexing (OFDM) symbols, determining an average correlation result of a current time-domain sample of the signal and a previous time-domain sample taken previously of the signal, accumulating the average correlation result for at least one of the OFDM symbols, determining a peak of the average correlation result to obtain a peak position, and identifying the peak position as a trigger point of the input signal. The peak position may be compared with a first trigger point to generate a trigger point error signal. The first trigger point may be set at the middle of a guard of an OFDM symbol to generate the trigger point error signal. | 2009-10-29 |
20090268827 | SYSTEM FOR FEEDING BACK INDEX OF CODEWORD MATRIX - A system is provided for performing downlink beamforming based on information fed back by a mobile station. The mobile station includes a channel matrix generation unit to generate a channel matrix with respect to channels ranging from a base station to a mobile station, the base station including multiple transmission antennas, a codebook updating unit to generate a second codebook including a plurality of second codeword matrixes based on the generated channel matrix and a first codebook including a plurality of first codeword matrixes, a codeword selection unit to select at least one transmission codeword matrix from among the plurality of second codeword matrixes, a transmission unit to transmit an index of the selected transmission codeword matrix to the base station, and a receiving unit to receive data transmitted from the base station via the multiple transmission antennas. | 2009-10-29 |
20090268828 | SYSTEMS AND METHODS FOR DOPPLER SHIFT COMPENSATION IN OFDMA COMMUNICATIONS - Systems and methods for Doppler Shift compensation in OFDMA communications are provided. In one embodiment, a system for orthogonal frequency division multiple access communication comprises: a basestation for communicating with a plurality of subscriber units using orthogonal frequency division multiple access. The basestation performs a ranging process with the plurality of subscriber units at a periodicity based on adaptive carrier frequency ranging periods. The basestation performs measurements of transmissions received from the plurality of subscriber stations, the measurements indicative of Doppler Shift frequency errors. The adaptive carrier frequency ranging periods are adjusted based on the measurements. | 2009-10-29 |
20090268829 | Systems and Methods for Sampling Frequency Offset Estimation - A method comprises receiving a transmission including at least two Orthogonal Frequency Division Multiplexing (OFDM) symbols, estimating a sampling frequency offset associated with the OFDM symbols at least in part by employing a term representing a density of pilots in the OFDM symbols, and compensating for the sampling frequency offset using the estimated sampling frequency offset. | 2009-10-29 |
20090268830 | SYSTEM AND METHOD FOR DETECTING TEMPORARILY UNUSED BANDWIDTH IN THE RF SPECTRUM | 2009-10-29 |