08th week of 2010 patent applcation highlights part 35 |
Patent application number | Title | Published |
20100046516 | Methods and Devices for Managing Multicast Traffic - A multicast router having one or more downstream network interfaces situated in a data network system between sources that send multicast packets to at least one multicast group address and one or more hosts that request data from the multicast group address and the sources. The multicast router receives ASM (Any Source Multicast) traffic requests and SSM (Source Specific Multicast) traffic requests from the one or more hosts using a host-router multicast routing protocol and stores for a downstream network interface and multicast group address at least one INCLUDE source record containing a non-empty source list derived by the SSM and the ASM traffic requests made by the one or more hosts and/or at least one EXCLUDE source record containing a non-empty Requested source list derived by the SSM and the ASM traffic requests made by the one or more hosts. In an alternative implementation a multicast router is provided that has one or more downstream network interfaces and is situated in a data network system between sources that send multicast packets to at least one multicast group address and multiple hosts that request data from the multicast group address and the sources. The multicast router stores for a each downstream network interface, each multicast group address and each host at least one INCLUDE source record and at least one EXCLUDE source record which are derived from ASM and SSM traffic requests made by the hosts using a host-router multicast routing protocol. | 2010-02-25 |
20100046517 | Address translator using address translation information in header area on network layer level and a method therefor - An address translator carries out address translation between a private address and a global address on a source address or a destination address included in the header of a received packet. The translator includes an address translation processor for applying address translation information to the header area of the received packet on a network layer level and carrying out address translation on the network layer level by means of the address translation information. Thus, the translator can establish high transparency, high possibility to establish interconnection, impartial assurance for users, high throughput and high availability, and thus provide open measures minimizing interrupt actions of any communication as well as possible. | 2010-02-25 |
20100046518 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - A physical frame is constructed, the physical frame including a medium access control super-frame payload which in turn includes a plurality of medium access control frames. With respect to the constructed physical frame, virtual carrier sense information is set in the plurality of medium access control frame so that a result of carrier sense is identical to another by virtual carrier sense based on the plurality of medium access control frames in the medium access control super-frame payload. The physical frame in which the virtual carrier sense information has been set is transmitted to a destined communication apparatus. | 2010-02-25 |
20100046519 | Re-Ordering Segments of a Large Number of Segmented Service Flows - A method and network device for re-ordering segments of a segmented data stream. The method includes receiving at least two segments of a segmented data stream. A descriptor for each of the at least two segments is obtained, and the at least two segments are re-ordered to generate re-ordered segments, where the re-ordered segments are in an original order. A set of re-ordered segments are processed to obtain at least one data packet, where at least one descriptor is utilized in the processing of the set of re-ordered segments. | 2010-02-25 |
20100046520 | PACKET RECOVERY METHOD, COMMUNICATION SYSTEM, INFORMATION PROCESSING DEVICE, AND PROGRAM - A packet recovery method of the present invention is a packet recovery method upon loss of a plurality of packets transmitted from a first node | 2010-02-25 |
20100046521 | System and Method for High Speed Packet Transmission - The present invention provides systems and methods for providing data transmission speeds at or in excess of 10 gigabits per second between one or more source devices and one or more destination devices. According to one embodiment, the system of the present invention comprises a first and second media access control (MAC) interfaces to facilitate receipt and transmission of packets over an associated set of physical interfaces. The system also contemplates a first and second field programmable gate arrays (FPGA) coupled to the MAC interfaces and an associated first and second memory structures, the first and second FPGAs are configured to perform initial processing of packets received from the first and second MAC interfaces and to schedule the transmission of packets to the first and second MAC interface for transmission to one or more destination devices. The first and second FPGAs are further operative to dispatch and retrieve packets to and from the first and second memory structures. A third FPGA, coupled to the first and second memory structures and a backplane, is operative to retrieve and dispatch packets to and from the first and second memory structures, compute appropriate destinations for packets and organize packets for transmission. The third FPGA is further operative to receive and dispatch packets to and from the backplane. | 2010-02-25 |
20100046522 | Relay Device And Method For Controlling The Relay Device - An ATM-ETHERNET converter ( | 2010-02-25 |
20100046523 | WIDE AREA NETWORK OPTIMIZATION PROXY ROUTING PROTOCOL - In an example embodiment disclosed herein, Wide Area Network optimization modules coupled to peers are configured to maintain peer routing tables. The peer routing table (PRT) is used by the Wide Area Network optimization module to determine the peer for a given destination, such as an Internet Protocol “IP” destination. Each peer is responsible for advertising to other peers which networks the peer is able to reach. This information is advertised when a tunnel is first created and subsequently whenever necessary. Initially, a peer sends out a list of entries corresponding to its directly connected networks, with the exception of the network connected to the interface on which the peer is advertising (e.g. the network used for the tunnel). This enables other peers on the network to populate their PRT entries. | 2010-02-25 |
20100046524 | METHODS AND ARRANGEMENTS FOR LAN EMULATION COMMUNICATIONS - LAN emulation in a moving network environment is disclosed. An emulated LAN encompassing a number of moving networks is formed by means of a set of layer 2 tunnels that interconnect a home agent with mobile routers in the moving networks. The home agent and the mobile routers are arranged to perform layer 2 forwarding over the layer 2 tunnels in order to form the emulated LAN. The layer 2 tunnels can be established in a number of alternative ways. The moving networks that are part of the emulated LAN may move, i.e. change their points of attachment to the network infrastructure, in a dynamic fashion without disrupting the function of the emulated LAN. | 2010-02-25 |
20100046525 | METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR PROVIDING ETHERNET VLAN CAPACITY REQUIREMENT ESTIMATION - A method, system, and computer program product for providing VLAN capacity requirement estimation is provided. The method includes receiving at a computing system a VLAN configuration file that specifies VLAN access ports, VLAN switches and VLAN trunks in a VLAN. A target access port identifier is received at the computing system from a requestor. A target trunk and target switch corresponding to the target access port are determined at the computing system. A bandwidth contribution of the target access port to the VLAN is calculated at the computing system. The calculating is based on a least contribution algorithm that reflects an impact of provisioning the target access port with respect to trunk capacity, and is responsive to the target bandwidth requirement, the target class of service and placement of the target port in the VLAN. The bandwidth contribution is then transmitted to the requestor. | 2010-02-25 |
20100046526 | TRANSPORT NETWORKS SUPPORTING VIRTUAL PRIVATE NETWORKS, AND CONFIGURING SUCH NETWORKS - A layer 2 transport network, and components thereof, supporting virtual network functionality among customer edge devices. Virtual private network configuration can be accomplished with merely local intervention by preprovisioning extra channel (or circuit) identifiers at each customer edge device and by advertising label base and range information corresponding to a list of channel (or circuit) identifiers. | 2010-02-25 |
20100046527 | Latency Equalization for Interactive Network Applications - A network configuration that supports latency-equalization (LEQ) routing by effectively “storing” packets on communication links, rather than at end points. A suitable network configuration is found by (i) identifying a candidate pool of routers through which the participating client terminals and application servers can exchange packets intended for LEQ routing and (ii) analyzing the delay inventory corresponding to the network paths connecting the client terminals and application servers, through those routers. Based on the analysis, M routers from the candidate pool are selected to serve as hub nodes. Each participating client terminal is assigned m of these M hub nodes and, thereafter, directs and receives its packets intended for LEQ routing through one of these m hub nodes. | 2010-02-25 |
20100046528 | Intelligent IMS Gateway for Legacy DSLAMs - Systems and methods according to the present invention address this need and others by improving service within the telecommunications field for gateways. According to exemplary embodiments, a gateway stores policy information which it uses to determine whether access to a requested service is permissible. The gateway manages a single Internet Multimedia Subsystem (IMS) session capable of supporting multiple requests for service from different requesting sources. | 2010-02-25 |
20100046529 | METHOD OF CONFIGURING THE QUALITY-OF-SERVICE PROFILE OF A GIVEN STREAM AT AN ACCESS NODE OF A PACKET COMMUNICATIONS NETWORK - A method is provided for configuring the service quality profile of a given flow at the access node of a packet communication network to which is connected to the gateway of a receiving user of the flow. The method includes a step where the gateway determines on its own a service quality profile to be associated with the flow, that is triggered upon reception of a packet from the access node, and a step where the service quality profile thus determined is sent to the access node. The profile is used by the access node for transmitting packets intended for the gateway and belonging to the flow in question. | 2010-02-25 |
20100046530 | IP Address Distribution in Middleboxes - A middlebox and method of operating the middlebox to provide an interface between first and second IP networks. An entity within the first IP network allocates IP addresses to one or more entities in the second IP network. The middlebox routes IP traffic within and between the networks based on the IP addresses, implements at least one IP address dependent service other than routing, and dynamically informs each service of the IP addresses allocated to the network entities and of changes to these addresses. | 2010-02-25 |
20100046531 | AUTONOMIC NETWORK NODE SYSTEM - An autonomic network node system for providing at least one virtual router (VR) for providing on demand virtual routing service, the autonomic network node system includes a plurality of autonomic router components (ARCs) comprising at least one autonomic control component (ACC) and at least one autonomic forwarding component (AFC), physical resources comprising a plurality of logical resource partitions (LRPs), at least one database for storing information relating to the plurality of ARCs and LRPs, and a autonomic framework configured for receiving at least one request of on demand virtual routing service, accessing at the at least one database, allocating at least one LRP to perform at least one ARC to be installed in the autonomic network node system, installing the at least one ARC in the autonomic network node system, allocating the installed ARC and, updating the at least one database. | 2010-02-25 |
20100046532 | ROUTING CONTROL SYSTEM FOR L3VPN SERVICE NETWORK - A routing control system comprising a system controller and master and slave routing servers, wherein the master routing server includes a plurality of logical controllers, each of which performs routing control for each of the user networks, the system controller monitors a load state of the master routing server and migrates at least one of the plurality of logical controllers from the master routing server to the slave routing server when the load state has satisfied a predetermined condition, so that the slave routing server inherits routing control for a particular user network associated with the migrated logical controller. | 2010-02-25 |
20100046533 | ROUTER AND PACKET DISCARDING METHOD - A router controlling a route of packets. The router includes a counter counting an amount of received control packets on a user-identifier-by-user-identifier basis, the control packets being used for managing a network, a discard determining unit comparing a counter value of the counter with a threshold value, and a control packet discarding unit discarding a control packet including a user identifier for which the discard determining unit determines that the counter value exceeds the threshold value. | 2010-02-25 |
20100046534 | DATA TRANSMISSION APPARATUS - A data transmission apparatus includes an input interface; an output interface; and a first and second switch portions which are provided between the input interface and the output interface and which transfer a frame from the input interface to a destination output interface, wherein the first and the second switch portions each include a buffer which stores the frame from the input interface according to the destination output interface, a scheduler which reads the frame from the buffer and transfers the frame to the destination output interface, and a frame amount detection portion which detects the amount of frames held in the buffer according to the destination output interface, and the scheduler controls reading from the buffer based on difference between the held frame amount of the first switch portion and the held frame amount of the second switch portion which is detected by the frame amount detection portion. | 2010-02-25 |
20100046535 | BORDER CONTROL SYSTEM, METHOD, AND SOFTWARE - Embodiments disclosed herein include systems, methods, and software that reduce processing burdens on host soft switches. A method of operating a communication network comprises receiving a plurality of update messages from a plurality of border controllers that interface communications between a first packet network and a second packet network. The update messages are processed to determine operational states of the plurality of border controllers. Responsive to receiving a query from a soft switch in the first packet network for a session between the first and second packet networks, the query is processed to select a first border controller for the session from the plurality of border controllers based on the operational states of the plurality of border controllers. A response is transferred to the soft switch indicating the first border controller. | 2010-02-25 |
20100046536 | METHODS AND SYSTEMS FOR AGGREGATING ETHERNET COMMUNICATIONS - Methods and systems for aggregating Ethernet communications are disclosed. A disclosed apparatus includes a first Ethernet port to communicate with a second Ethernet port of a first device, a third Ethernet port to communicate with a fourth Ethernet port of a second device, a fifth Ethernet port to receive Ethernet frames, and a switching portion to direct nth ones of the frames to a first queue associated with the second port, direct n−1 frames preceding each of the nth ones of the frames to a second queue associated with the fourth port, and select a value of n based on a ratio of a first non-zero data rate of the first device for a first communication link in a first direction and a second non-zero data rate of the second device for a second communication link in the first direction, and based on a remaining capacity of the first queue. | 2010-02-25 |
20100046537 | METHODS FOR INTELLIGENT NIC BONDING AND LOAD-BALANCING - Methods, devices, and media for intelligent NIC bonding and load-balancing including the steps of: providing a packet at an incoming-packet port of a gateway; attaching an incoming-port identification, associated with the incoming-packet port, to the packet; routing the packet to a processing core; passing the packet through a gateway processing; sending the packet, by the core, to the operating system of a host system; and routing the packet to an outgoing-packet port of the gateway based on the incoming-port identification. Preferably, the gateway processing includes security processing of the packets. Preferably, the step of routing the packet to the outgoing-packet port is based solely on the incoming-port identification. Preferably, an outgoing-port identification, associated with the outgoing-packet port, has an identical bond-index to the incoming-port identification. Preferably, the gateway includes a plurality of incoming-packet ports, a plurality of respective incoming-port identifications, a plurality of processing cores, and a plurality of outgoing-packet ports. | 2010-02-25 |
20100046538 | TCP CONNECTION RESOURCE DIVERSITY USING TUNABLE GEOMETRIC SERIES - Disclosed is a computer implemented method and apparatus for handling transport control protocol connections. The local host receives a transport control protocol socket connection request from a host. By subtracting a current port connection from maximum port connections to form a difference, the local host calculates the threshold based the difference divided by the tunable divisor, the tunable divisor not equal to one. The local host then determines whether the current port connections exceeds the threshold. By responding to a determination that the current port connections exceed the threshold, the local host blocks the transport control protocol socket request based on the TCP socket connection request. | 2010-02-25 |
20100046539 | METHOD AND SYSTEM FOR PROCESSING DATA - In a system and a method for real time transmission between modules that are serially connected to one another, each module embeds its useful data in a data packet received by a preconnected module, which has a data packet number, if a comparison value formed as a function of the data packet number agrees with an identification number (frameID) that is provided in the module. | 2010-02-25 |
20100046540 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU. | 2010-02-25 |
20100046541 | Method and System for Generating a Packet Identifier Table from a Received Transport Stream - One embodiment of the present invention sets forth a method of generating a packet identifier table that comprises reading a packet identifier value from a received transport stream packet, identifying a type of data contained in the received transport stream packet, and generating a table with mapping information between the packet identifier value and the identified type of data. | 2010-02-25 |
20100046542 | MIMO AND SDMA SIGNALING FOR WIRELESS VERY HIGH THROUGHPUT SYSTEMS - Apparatuses for communication are disclosed, including processing systems configured to generate and/or receive a plurality of streams, each of the streams having one or more data packets including a plurality of portions, in which each of the portions in each of the data packets is coded and modulated independently of the other portions in the same data packet, the processing systems being further configured to code and modulate and/or decode and demodulate the data packets. Also disclosed are methods for generating and/or receiving a plurality of streams, each of the streams having one or more data packets comprising a plurality of portions, and for coding and modulating and/or decoding and demodulating each of the portions in each of the data packets independently of the other portions in the same data packet. | 2010-02-25 |
20100046543 | Method of synchronization for low power idle - A method of synchronizing a first transceiver with a second transceiver during a low power idle mode is disclosed for use in network communication devices. A LDPC counter, which initiates a count operation upon transition to PAM16 mode, serves as a master counter to determined when, based on predetermined count values, each channel reactivates from low power idle mode to active mode to generate and send a refresh signal. The transmitter and associated remote receiver both reactivate at the predetermined refresh period to process the refresh signal. Each transmitter/receiver pair has predetermined refresh periods during low power idle mode. The refresh signal is processed for maintain clock synchronization and for filter and equalizer adaptation. | 2010-02-25 |
20100046544 | METHODS OF HEADER COMPRESSION WITHIN A WIRELESS COMMUNICATIONS NETWORK - Embodiments of the invention disclose header compression within a wireless communications network. In an example, the method includes establishing, between an access network and an access terminal, a flow identifier (ID) and mapping protocol to support header compression for packets sent to the access network from the access terminal and intended for an application server. The mapping protocol can be configured to convert packets including the flow ID into packets that conform with a given addressing protocol for routing to the application server. The access terminal sends and the access network receives a first packet of a stream of packets. The first packet includes the flow ID and is in a compressed format compared to that of the same packet conforming with the given addressing protocol. The access network converts the received first packet into a routing packet based on the mapping protocol that conforms with the given addressing protocol. | 2010-02-25 |
20100046545 | SYSTEM AND METHOD FOR SIMULTANEOUS COMMUNICATION ON MODBUS AND DNP 3.0 OVER ETHERNET FOR ELECTRONIC POWER METER - A system and method is provided for simultaneous communications on Modbus and DNP 3.0 over Ethernet for an electronic power meter. The system incorporates one or more protocol wrappers to provide compatibility with both Modbus and DNP based applications. The system removes the appropriate wrappers and routes the incoming data packet to its destination. Additionally, the system also wraps outgoing response packets with the appropriate protocol wrapper based on the related data packet wrappers. | 2010-02-25 |
20100046546 | SYSTEMS AND METHODS FOR PROVIDING DYNAMIC SPILLOVER OF VIRTUAL SERVERS BASED ON BANDWIDTH - The present solution provides a spillover management technique for virtual servers of an appliance based on bandwidth. A network administrator may configure a bandwidth threshold for one or more virtual servers, such as virtual servers providing acceleration or load balancing for one or more services. The bandwidth threshold may be specified as a number of bytes transferred via the virtual server. The bandwidth threshold may also be specified as a round trip time or derivative thereof. A user may specify the bandwidth threshold via a configuration interface. Otherwise, the appliance may establish the bandwidth threshold. The appliance monitors the bandwidth used by a first virtual server. In response to detecting the bandwidth reaching or exceeding the bandwidth threshold, the appliance dynamically directs client requests to a second virtual server. | 2010-02-25 |
20100046547 | METHOD AND APPARATUS FOR FRAME CONTROL HEADER DECODING - A method and apparatus for decoding a frame control header message in a wireless communication transmission are disclosed. The method comprises assuming at least some of the bits comprising the frame control header message are constant across multiple frames or are known a priori and generating metrics at least from the bits of the frame control header message that are assumed to be constant or are known a priori. The method further comprises decoding the metrics, for example, with a Viterbi decoder or using chase combining, to yield the decode frame control header message. | 2010-02-25 |
20100046548 | MULTI-PURPOSE PDU CONTAINER FOR DELINEATING PDU DATAGRAMS AND PDU DATAGRAM ATTRIBUTES IN AN 8B/10B CODED SYSTEM - A method of reducing overhead for datagrams that are transmitted to or received from a serial link that reduces overhead to no more than four bytes. The datagram includes at least a Protocol Data Unit (PDU) field, a Start-of-PDU Header (SPH) field, and a SPH Control (SCH) field. The SPH and SCH fields consist of two bytes. The datagram may additionally include End-of-PDU Header (EPH) and EPH Control (ECH) fields. A method may also involve substitution of flags for subsequent headers that are identical to previous headers. | 2010-02-25 |
20100046549 | Channel Bonding and Packet Fragment Retransmission Method and Apparatus - According to one embodiment, a physical line receiver is coupled to at least one of a plurality of bonded communication lines over which a sequence of packet fragments are transmitted as data units. The physical line receiver includes at least one physical sublayer that transfers packet fragments recovered from different ones of the data units received by the physical line receiver to a bonding sublayer for packet reassembly until the physical line receiver is instructed to stop transferring packet fragments because of a transmission error on one or more of the bonded communication lines coupled to a different physical line receiver. The at least one physical sublayer also buffers the recovered packet fragments without transferring the buffered packet fragments to the bonding sublayer until the physical line receiver is instructed to resume transferring packet fragments to the bonding sublayer. | 2010-02-25 |
20100046550 | CONTEXT BASED HEADER SELECTION IN A MULTI-FLOW PACKET APPLICATION | 2010-02-25 |
20100046551 | TRANSMISSION OF A TRIBUTARY IN SYNCHRONOUS MODE AT THE LEVEL OF A LINK OF A DATA NETWORK - The invention relates to a method of transmitting at least one tributary in synchronous mode at the level of a link of a data network, said tributary comprising at least one frame in the SDH or SONET format, said frame comprising at least one payload envelope area and one transport overhead area, said payload envelope area comprising at least one payload and load supervision data related to the payload, said transport overhead area comprising at least transport supervision data related to transport and an area of fixed patterns comprising fixed patterns, said method comprising steps of:—modifying said frame so as to generate a modified frame; transmitting said modified frame, the modification comprising steps in which:—part of said fixed patterns are deleted from said fixed pattern area; the positions of said part of the fixed patterns deleted are recorded; replacement data are inserted at the level of said positions, the method being characterized in that said replacement data comprise the transport supervision data of the frame of said tributary. | 2010-02-25 |
20100046552 | TIME-STAMPING APPARATUS AND METHOD FOR RTP PACKETIZATION OF SVC CODED VIDEO, AND RTP PACKETIZATION SYSTEM USING THE SAME - Provided are a time-stamping apparatus and method for RTP packetization of a SVC coded video, and a RTP packetization system using the same. The time stamping apparatus includes: a NAL unit classifier for checking a header of an input NAL unit and classifying the input NAL units based on a picture property; a first timestamp calculator for calculating a RTP timestamp value for a NAL unit classified as a key picture by the NAL unit classifier; a second timestamp calculator for calculating a RTP timestamp value for a NAL unit classified as a non-key picture by the NAL unit classifier; and a controller for setting a RTP timestamp value for an instantaneous decoding refresh (IDR) picture and controlling the first and second timestamp calculators for calculating a RTP timestamp value of a corresponding NAL unit. | 2010-02-25 |
20100046553 | DATA PACKET GENERATOR FOR GENERATING PASSCODES - A data packet generator periodically generates a data packet including a passcode comprising a plurality of characters. The data packet is sent to a server or a computing device for validation. If validated, the data packet is used, for example, to identify the location of a user or device. Additional systems and methods involving such a data packet generator are also disclosed. | 2010-02-25 |
20100046554 | COMBINING MATERIAL AND DATA - A method of generating a file at a header metadata creator apparatus, the method including: generating, at the header metadata creator apparatus, a file, the file including: a file header, a file body, and a file footer, wherein the file header includes at least KLV encoded header metadata, the KLV encoded header metadata including at least a universal label, length data and variable length data, the variable length data including a plurality of KLV encoded metadata sets, each one of the KLV encoded metadata sets includes a predetermined universal label, essence length data and a plurality of KLV encoded metadata items, and each KLV encoded metadata item includes at least an item universal label, variable item length data and item value data. | 2010-02-25 |
20100046555 | METHOD AND APPARATUS FOR INFORMATION DISSEMINATION - A system and method for transmitting information to a group of recipient devices [ | 2010-02-25 |
20100046556 | Priority Aware MAC Flow Control - Solutions are provided that allow a network device to apply flow control on the MAC layer while taking into account the priority of the frame of traffic. This may be accomplished by generating a frame indicating that traffic flow should be paused, while utilizing a new opcode value, or alternatively by utilizing a new type/length value (possibly combined with a new opcode value). A receiving device may then examine the fields of the frame to determine whether it should it should use priority-based pausing, and then examine other fields to determine which priority-levels to pause and for how long. This allows for improved efficiency in flow control on the MAC layer. | 2010-02-25 |
20100046557 | MANAGING TRANSMIT JITTER FOR MULTI-FORMAT DIGITAL AUDIO TRANSMISSION - A method of transmitting audio data across a digital interface is provided. The method includes receiving audio data, organized as a plurality of audio samples. At least one of the plurality of audio samples may be placed into a data packet. The data packet may be transmitted during a valid transmission interval if the data packet is full or during a valid transmission interval in response to receiving a packet send event. | 2010-02-25 |
20100046558 | HEADER REDUCTION OF DATA PACKETS BY ROUTE OPTIMIZATION PROCEDURE - The invention relates to a method for reducing the header size of data packets exchanged between a Mobile Node and its Home Agent. Different sort of headers are utilized between a Correspondent Node and the MN's HA, and between the MN and its HA. The sort of header used between the MN and its HA allows to reduce the header size of exchanged packets on said data path section, as only one header is necessary, compared to the necessity of two headers of the previous sort, used between the CN and the HA. To achieve this, a modified route optimization procedure is performed between the MN and its HA, wherein the HA participates in the RO on behalf of the CN. Thus, the RO remains transparent for the CN, while the MN thinks normal RO is happening. The invention also relates to several network entities that participate in the method. | 2010-02-25 |
20100046559 | Method and apparatus for data transmission in home networks - A multi-tone modem with components forming a transmit path and a receive path configured to couple to a wired communication medium for at least intermittent communication of frequency division multiplexed multi-tone modulated communication channels thereon. A Fourier transform component transforms received communication channels between a time domain and a frequency domain and vice-versa. Selected components on the receive path determine alignments between the received multiplexed communication channels in the time domain using alignment determinations made in both a time domain and frequency domain portions of the receive path. The Fourier transform component transforms a stream of digitized samples of the received multiplexed communication channels from the time to the frequency domain using the alignment determinations made by the selected components on the receive path. In another embodiment of the invention the multi-tone modem includes a scheduler which optimizes bandwidth allocation on the wired communication medium. | 2010-02-25 |
20100046560 | Dispersion managed fiber stretcher and compressor for high energy/power femtosecond fiber laser - Methods and systems for generating high energy, high power, ultra-short laser pulses are disclosed, including coupling an electromagnetic radiation pulse emitted from a seed to a photonic crystal fiber stretcher; coupling the electromagnetic radiation pulse exiting the photonic crystal fiber stretcher to a preamplifier; coupling the electromagnetic radiation pulse exiting the preamplifier to a pulse picker; coupling the electromagnetic radiation pulse exiting the pulse picker to a high power amplifier; coupling the electromagnetic radiation pulse exiting the high power amplifier to a photonic crystal fiber compressor; and coupling out the electromagnetic radiation pulse from the photonic crystal fiber compressor. Other embodiments are described and claimed. | 2010-02-25 |
20100046561 | HIGH ENERGY PULSE SUPPRESSION METHOD - A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing that information for adjusting dummy pulse time periods to compensate for the energy errors. Dummy pulses are laser pulses that are blocked from reaching a workpiece. A second way for providing constant pulse energies employs an AOM for varying amounts of laser energy passed to the workpiece. A third way of providing constant pulse energies entails extending the pulse period of selected pulses to allow additional laser cavity charging time whenever a dummy pulse is initiated. | 2010-02-25 |
20100046562 | TUNABLE LASER DEVICE AND A METHOD FOR PRODUCING LIGHT OF RESPECTIVE SELECTABLE WAVELENGTHS - A tunable laser device ( | 2010-02-25 |
20100046563 | Multibeam laser diode - A multibeam laser diode capable of improving heat release characteristics in the case of junction-down assembly is provided. Contact electrodes are provided respectively for protruding streaks of a laser diode device, and pad electrodes are provided to avoid the protruding streaks and the contact electrodes. The contact electrodes and the pad electrodes are connected by wiring electrodes, and the contact electrodes are covered with a first insulating film. Thereby, electric connection is enabled without straightly jointing the contact electrodes to a solder layer. A heat conduction layer configured of a metal is provided on the first insulating film, the heat conduction layer is jointed to the solder layer, and thereby the heat release characteristics are able to be improved even in the case of junction-down assembly. | 2010-02-25 |
20100046564 | SEMICONDUCTOR DEVICE AND ELECTRONIC EQUIPMENT USING SAME - A semiconductor device includes: a first lead having an element mounting portion; a second lead located in a same plane as the first lead, with a predetermined space left between the first lead and the second lead; a molding encapsulant made of a resin for fixing the leads; and a semiconductor element affixed to a top surface of the element mounting portion of the first lead. The molding encapsulant covers at least part of each of upper and lower surfaces of the leads. A resin injection hole mark, which is a mark of a hole through which the encapsulant has been injected, is left on the encapsulant, and part of the resin injection hole mark is located above the first lead or the second lead, and the remaining part of the resin injection hole mark is located above a space between the first lead and the second lead. | 2010-02-25 |
20100046565 | Vertical cavity surface emitting laser - A vertical cavity surface emitting laser includes a layer-stack structure including, on a substrate, a transverse-mode adjustment layer, a first multilayer reflecting mirror, an active layer having a light emission region, and a second multilayer reflecting mirror in order from the substrate side, and including a current confinement layer in which a current injection region is formed in a region corresponding to the light emission region in the first multilayer reflecting mirror, between the first multilayer reflecting mirror and the active layer, between the active layer and the second multilayer reflecting mirror, or in the second multilayer reflecting mirror. In the transverse-mode adjustment layer, reflectance at an oscillation wavelength in the region opposite to a center of the light emission region is higher than that at an oscillation wavelength in the region opposite to an outer edge of the light emission region. | 2010-02-25 |
20100046566 | SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A semiconductor light emitting device includes at least a first cladding layer of a first conductive type, an active layer, a second cladding layer of a second conductivity type, and a contact layer of the second conductivity type stacked in this order on a substrate, and further includes a ridge portion including the second cladding layer and the contact layer. On the second cladding layer, are formed a dielectric film which covers the ridge portion and has an opening selectively exposing a top of the ridge portion, and an electrode in contact with a top surface and a side surface of the contact layer exposed from the dielectric film. The dielectric film includes a no-current injection region which covers an end of the ridge portion to block current injection to the active layer, and the no-current injection region of the dielectric film is in contact with the contact layer. | 2010-02-25 |
20100046567 | PROPAGATION OF MISFIT DISLOCATIONS FROM BUFFER/SI INTERFACE INTO SI - Misfit dislocations are redirected from the buffer/Si interface and propagated to the Si substrate due to the formation of bubbles in the substrate. The buffer layer growth process is generally a thermal process that also accomplishes annealing of the Si substrate so that bubbles of the implanted ion species are formed in the Si at an appropriate distance from the buffer/Si interface so that the bubbles will not migrate to the Si surface during annealing, but are close enough to the interface so that a strain field around the bubbles will be sensed by dislocations at the buffer/Si interface and dislocations are attracted by the strain field caused by the bubbles and move into the Si substrate instead of into the buffer epi-layer. Fabrication of improved integrated devices based on GaN and Si, such as continuous wave (CW) lasers and light emitting diodes, at reduced cost is thereby enabled. | 2010-02-25 |
20100046568 | QUANTUM CASCADE LASER AMPLIFIER WITH AN ANTI-REFLECTION COATING INCLUDING A LAYER OF YTTRIUM FLUORIDE - A quantic cascade laser amplifier ( | 2010-02-25 |
20100046569 | SILICON-BASED LENS SUPPORT STRUCTURE FOR DIODE LASER - An apparatus that includes a first diode laser and a silicon-based support structure is provided. The first diode laser is configured to emit a first laser beam when powered. The support structure includes a silicon-based support plate, a silicon-based first fin structure, and a silicon-based second fin structure. The support plate has a first primary surface and a second primary surface opposite the first primary surface. The first fin structure has a first primary surface, a second primary surface opposite the first primary surface, and a plurality of edges between the first and the second primary surfaces including a first edge and a second edge opposite the first edge. The first fin structure is physically coupled to the support plate with the first edge of the first fin structure attached to the first primary surface of the support plate. The second fin structure has a first primary surface, a second primary surface opposite the first primary surface, and a plurality of edges between the first and the second primary surfaces including a first edge and a second edge opposite the first edge. The second fin structure is physically coupled to the support plate with the first edge of the second fin structure attached to the first primary surface of the support plate. The first diode laser is physically coupled between the first and the second fin structures to emit the first laser beam in a direction away from the support plate. | 2010-02-25 |
20100046570 | SURFACE-EMITTING LASER - Provided is a high-output surface-emitting laser capable of reducing effects on reflectance of an upper reflection mirror in a single transverse mode. The surface-emitting laser includes plural semiconductor layers, laminated on a substrate, which includes a lower semiconductor multilayer reflection mirror, an active layer, and an upper semiconductor multilayer reflection mirror, wherein the lower or upper semiconductor multilayer reflection mirror includes a first semiconductor layer having a two-dimensional photonic crystal structure comprised of a high and low refractive index portions which are arranged in a direction parallel to the substrate, and wherein a second semiconductor layer laminated on the first semiconductor layer includes a microhole which reaches the low refractive index portion, the cross section of the microhole in the direction parallel to the substrate being smaller than the cross section of the low refractive index portion formed in the first semiconductor layer. | 2010-02-25 |
20100046571 | SURFACE EMITTING LASER DEVICE - A surface emitting laser device can further improve the light emission efficiency thereof to enlarge the degree of freedom of the device. The surface emitting laser device includes an active layer | 2010-02-25 |
20100046572 | Photonic-Crystal-Based Photon Extractor for High-Yield Optical Microsources - The invention relates to a photon extractor comprising a photonic-crystal-based membrane having a plane defined by two perpendicular directions, comprising an array of features and a cavity devoid of features, from which photons may be extracted, characterized in that the membrane comprises at least one region close to the cavity, said region having features distributed with a double periodicity (a | 2010-02-25 |
20100046573 | CALORIMETER AND METHODS OF USING IT AND CONTROL SYSTEMS THEREFOR - Control systems and calorimeters using them are provided. In certain examples, a calorimeter comprising a thin film sample sensor, a thin film reference sensor, a first controller configured to receive a temperature signal from only the reference sensor and to generate a first control signal, based on the received temperature signal, to provide average power to the sample sensor and to the reference sensor, and a second controller configured to receive temperature signals from both the sample sensor and the reference sensor and to generate a second control signal, based on the temperature signals received from both the sample sensor and the reference sensor, to provide differential power to only the sample sensor is described. Methods using the control systems and calorimeters are also described. | 2010-02-25 |
20100046574 | APPARATUS FOR THERMAL CHARACTERIZATION UNDER NON-UNIFORM HEAT LOAD - What is disclosed is an apparatus for determining the cooling characteristics of a cooling device used for transferring heat from an electronic device. The apparatus comprising a cooling device thermally coupled to a heat pipe. The heat pipe having an exposed surface for the selective application of heat thereon. A localized heat source is selectively applied to at least one region of the exposed surface. The heat source preferably capable of being varied both positionally relative to the exposed surface and in heat intensity. A heat shield is preferably positioned around the exposed surface of the heat pipe to isolate the operational cooling device from the localized heat source. A temperature detector repeatedly measures a temperature distribution across the exposed surface while the cooling device is in a heat transfer mode. The temperature distribution is then used to thermally characterize the cooling device. | 2010-02-25 |
20100046575 | Flexible Thermal Cycle Test Equipment for Concentrator Solar Cells - A system and method for performing thermal stress testing of photovoltaic solar cells is presented. The system and method allows rapid testing of photovoltaic solar cells under controllable thermal conditions. The system and method presents a means of rapidly applying thermal stresses to one or more photovoltaic solar cells in a consistent and repeatable manner. | 2010-02-25 |
20100046576 | METHOD FOR PERFORMING ULTRASONIC TESTING - Methods of performing ultrasonic testing are disclosed, comprising the step of determining a temperature gradient of an ultrasonic wedge. In one embodiment of the invention, the method further comprises the steps of determining a sound velocity gradient of the ultrasonic wedge to determine the time it takes for sound waves emanating from a plurality of ultrasonic transducer elements attached to the ultrasonic wedge to reach a point of interest within a test object, and firing each of the ultrasonic transducer elements in a timed sequence based on the times such that sound waves from each of the ultrasonic transducer elements reach the point of interest at the same time. In other embodiments of the invention, the total attenuation and acoustic impedance of a sound wave traveling through the ultrasonic wedge is determined to adjust the amplitude of the sound wave such that the sound wave has sufficient amplitude to perform the ultrasonic testing. | 2010-02-25 |
20100046577 | THERMAL INSTRUMENT ENGINE - An engine for use in a thermal instrument. The engine includes an infrared camera module and may also include a visible light camera module. The engine includes several temperature sensors mounted on a printed circuit board assembly that permit the engine to provide improved radiometry functionality and improved fine offset compensation capabilities. | 2010-02-25 |
20100046578 | Device for Measuring Temperature in Molten Metals - A device is provided for temperature measurement in metal melts, particularly in iron or steel melts, having a thermoelement, which is arranged in a thermoelement tube, and having an exterior protective body, which is essentially formed of graphite and metal oxide. The thermoelement tube is arranged in the protective body with a spacing, forming an intermediate space, and an insulating material and an oxygen-reducing material are arranged in the intermediate space. The insulating material and the oxygen-reducing material, as a powder mixture, form a tube ( | 2010-02-25 |
20100046579 | Rechargeable Ear Thermometer - A rechargeable ear thermometer which comprises a planar main body, a planar ear probe panel integral with the planar main body, an ear probe extending from the planar ear probe panel, a power source within the planar main body, and a mechanism at bottom of the planar main body for recharging the power source. An angle is formed between the planar main body and the planar ear probe panel to allow a proper approach to an ear of a person with the ear probe, without having the planar main body pushed up against a face of the person while taking a temperature reading of the person. | 2010-02-25 |
20100046580 | TEMPERATURE SENSOR CIRCUIT - A temperature sensor circuit includes a band-gap reference voltage circuit. The resistor and diode-connected bipolar transistor of the band-gap reference voltage circuit are separated into a transistor-resistor series circuit and a transistor-diode series circuit. The transistor-resistor series circuit is configured such that an emitter of the bipolar transistor Q | 2010-02-25 |
20100046581 | ULTRA-WIDEBAND PULSE GENERATOR AND METHOD THEREOF - Provided is an ultra-wideband pulse generator using a digital scheme. The ultra-wideband pulse generator and a method for generating an ultra-wideband pulse therein can easily generate various ultra-wideband pulses having a random center frequency and bandwidth according to digital control schemes in a pulse-based ultra-wideband wireless communication system. The ultra-wideband pulse generator includes: a pulse waveform converting block for converting digital pulse waveform information on a desired ultra-wideband pulse into pulse waveform information having positive and negative signs; an unit pulse generating block for multiplying the converted pulse waveform information by a preset short-width pulse and amplifying the resulting pulses according to gain information of the desired ultra-wideband pulse; a pulse waveform arranging block for arranging the amplified pulses at predetermined delayed intervals; and a pulse waveform shaping block for summing the arranged pulses into a single pulse and integrating the single pulse to output the desired ultra-wideband pulse. | 2010-02-25 |
20100046582 | Gigabit Spread-Spectrum Wireless Networking - The patent of Nathan Parker on the related spectrum-sensing broadband modem/router is capable of producing gigabit transfer rates of data. However, none of the current wireless networking standards are capable of producing gigabit data transfer rates. This patent would allow this type of standard to exist, as well as produce the wireless cards that would take advantage of this new standard. The transmitter for this new standard would also be integrated into the spectrum-sensing broadband modem/router. | 2010-02-25 |
20100046583 | Reliable Wireless Communication System Using Adaptive Frequency Hopping - A method and system, the method including determining a frequency quality measurement value for each of a plurality of frequencies a network coordinator can use in a frequency hopping sequence for communicating with a client, classifying each of the plurality of communication frequencies into one of a plurality of different categories based on a relative ranking of the determined frequency quality measurement value of each of the plurality of frequencies, generating, by the network coordinator, a frequency hopping sequence to be used for communication between the network coordinator and the client, the generated hopping sequence including only select frequencies from the plurality of frequencies in a predetermined number of future time slots that minimize a probability of a predetermined number of consecutive frequency hop failures in the predetermined number of future time slots, and notifying the client of the generated frequency hopping sequence to be used for communication. | 2010-02-25 |
20100046584 | METHOD AND APPARATUS FOR GENERATING A PERMUTATION FOR FORWARD LINK HOPPING IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for generating a permutation for forward link hopping is provided, comprising initializing permutation constants, determining a value for p such that i is less than 2 | 2010-02-25 |
20100046585 | Frequency Hopping Network with a Guaranteed Handoff Delay - A system and method for operating a communications system network, the method including operating an access point (AP) acting as a network controller in a frequency hopping network, the AP communicating with other communication devices of the network over m number of frequencies using a hopping sequence of at least some of the m number of frequencies and a dwell time d for the plurality of frequencies; and operating a communication device seeking to establish synchronized communication with other communication devices of the frequency hopping network without any cross-AP coordination, the communication device scanning all of the m number of frequencies using a scanning time s for each of the m number of frequencies; and, wherein the scanning time s is no greater than 1/m of the AP dwell time d. | 2010-02-25 |
20100046586 | Method and system for performing distance measuring and direction finding using ultrawide bandwitdh transmissions - A method is provided for enabling a device function at a local device based on distance information, comprising: establishing a communication link with a remote device over a UWB medium using a multiple access protocol; determining a distance between the local device and the remote device; and controlling a device function for the remote device based on the determined distance, wherein the operation of controlling the device function enables the device function when the determined distance is below a set distance threshold, and wherein the operation of controlling the device function disables the device function when the determined distance is above the set distance threshold. | 2010-02-25 |
20100046587 | Method For de spreading Quadrature Pseudorandom Noise - The present invention discloses a method for de-spreading quadrature pseudorandom noise, which including: inputting data sequences I′ and Q′, and inputting pseudorandom noise sequences PNI and PNQ, on which quadrature pseudorandom noise de-spreading operation will be performed; in each timeslot, extracting continuously 2048 codeword from each pseudorandom noise sequence PNI and each pseudorandom noise sequence PNQ respectively, performing time-division de-multiplexing operation on the 2048 codeword respectively, and obtaining pseudorandom noise sequences PNI′ and PNQ′ both with a length of 1600 codeword; performing quadrature pseudorandom noise de-spreading operation on the pseudorandom noise sequences PNI′ and PNQ′ and the data sequences I′ and Q′ with a length of 1600 codeword input in the timeslot, and then outputting data sequences I and Q. The invention operates the input sequences to be performed with quadrature PN de-spreading. Thereby, system transmission requirement is satisfied, and complexity of transmitting end is relatively lowered. | 2010-02-25 |
20100046588 | REDUCED-COMPLEXITY ANTENNA SYSTEM USING MULTIPLEXED RECEIVE CHAIN PROCESSING - A method for processing signals is disclosed and may include performing using one or more circuits, orthogonally multiplexing, on to a single processing chain, a plurality of replicas of a signal received via a corresponding plurality of spatially distinct antennas. The orthogonally multiplexed plurality of replicas of the received signal may be converted to corresponding digital multiplexed signals that include multiplexed replicas of the plurality of received signals. The corresponding digital multiplexed signals may be demultiplexed to generate the plurality of replicas of the signal received via the corresponding plurality of spatially distinct antennas. The plurality of replicas of the received signal may be spread, for example, may be orthogonally spread. | 2010-02-25 |
20100046589 | GPS M-CODE RECEIVER TRACKING SYSTEM - An m-code GPS receiver receives m-code GPS communication signals having a multimodal autocorrelation, using an m-code mode identifier unambiguously determining a mode value of one of the m-code modal peaks coherently aligned to a coherent unimodal detected envelope, based on sequential probability estimation in an m-code envelope tracking filter using filter residual estimation or with a coherent m-code and c/a-code tracking filter also based on filter residual estimation, for generating m-code phase errors, for unambiguous and precise m-code code phase tracking in closed feedback loops, for preferred use in navigation systems. | 2010-02-25 |
20100046590 | EXTENDING TRANSMISSION DISTANCE IN A HIGH-SPEED SERIAL NETWORK - A data transmission system for transmitting data from a first location to a second location includes a transmitting device configured to transmit the data and located at the first location. The transmitting device includes a serial attached SCSI (SAS) enabled controller. The system also includes an I/O port coupled to the transmitting device and having multiple lanes and a repeater powered by one of the lanes. The system also includes a receiving device coupled to the second end of the cable. | 2010-02-25 |
20100046591 | FREQUENCY SYNTHESIZER FOR INTEGRATED CIRCUIT RADIOS - An integrated circuit radio transceiver and method therefor includes capacitive loop filter with selectable capacitive elements that are operable to adjust a signal level provided to a voltage controlled oscillator to control a frequency of an output signal of the oscillator. A plurality of switches are controlled by logic to define a discharge mode, a charge mode and charge sharing mode in which a plurality of capacitive elements share charge while generating the input voltage to the oscillator. | 2010-02-25 |
20100046592 | HIGH IMPEDANCE STATE FOR DIGITAL SUBSCRIBER LINE TRANSCEIVERS ON COPPER TWISTED PAIRS - The invention relates to methods and a high speed communication device that allow one of a plurality of high speed communication devices connected to a transmission line having a normal impedance to effectively receive data. | 2010-02-25 |
20100046593 | Methods and Apparatuses for Data Transmission - In an embodiment, a communication device is provided comprising transmit circuitry and crosstalk reduction circuitry. In an embodiment, the crosstalk reduction circuitry is configured to receive crosstalk information indicative of crosstalk between a plurality of communication connections for only a part of communication channels of said communication connections. | 2010-02-25 |
20100046594 | Method and device for decoding a signal - In a method and a device for decoding a signal, the signal is transmitted via at least one connecting line of a data transmission system, in a user of the data transmission system receiving the signal. It is provided to measure the interval of a change—provided compulsorily in a transmission protocol used in the data transmission system—of the signal from rising to falling or from falling to rising edge. A tendency for an asymmetrical delay of the signal can be ascertained from the measured interval. The sampling of the bits of the received signal can be improved as a function of the interval or of the asymmetrical delay, for example, by setting the sampling instant in variable fashion. Alternatively, the interval or the asymmetrical delay can be utilized for diagnostic purposes. | 2010-02-25 |
20100046595 | SEMI-COHERENT TIMING PROPAGATION FOR GERAN MULTISLOT CONFIGURATIONS - A method for estimating timing in a wireless communication comprises the steps of receiving a plurality of symbol bursts corresponding to a plurality of time slots and selecting a subset of symbols from a first symbol burst of the plurality of symbol bursts. The subset comprises a first midamble symbol. The method further comprises the steps of calculating, for each symbol in the subset, a corresponding midamble estimation error, and determining the lowest calculated midamble estimation error to determine a timing for the first symbol burst. The method further comprises the steps of processing the first symbol burst utilizing the timing determined for the first symbol burst, and processing a second symbol burst of the plurality of symbol bursts utilizing the timing determined for the first symbol burst. | 2010-02-25 |
20100046596 | RADIO COMMUNICATION SYSTEM - A radio communication system minimizes power consumption against noises. The system includes a first radio terminal ( | 2010-02-25 |
20100046597 | Adaptive Receive-Side Equalization - An adaptive receiver equalizes incoming data expressed as a series of symbols, the degree of equalization being adjusted by some adaptive control logic. An amplitude detector samples the amplitude of the eye openings of incoming symbols and conveys the resulting measures of eye amplitude to the adaptive control logic. The control logic experiments with different equalization settings while monitoring the resulting eye amplitude to find the equalization setting that provides incoming data eyes of the highest amplitude. A data filter may be included to enable the amplitude detector only in response to particular incoming data patterns. | 2010-02-25 |
20100046598 | Adaptation Of A Linear Equalizer Using A Virtual Decision Feedback Equalizer (VDFE) - A method and system of adaptation of a linear equalizer using a virtual decision feedback equalizer (VDFE) are disclosed. In one embodiment, a method of adjusting a setting of a linear equalizer includes determining a change to a decision feedback equalizer (DFE) tap weight value of a predefined metric according to a data signal and an error signal (e.g., the change may be generated according to an average of a specified plurality of data signals and the error signal); using the change in the DFE tap weight value to algorithmically generate a modification in a linear equalizer setting; and adjusting the linear equalizer setting. The linear equalizer is located in a feed-forward path and/or a feedback path of data transmission. The linear equalizer may be located in a transmitter and/or a receiver. The linear equalizer may be a continuous time linear equalizer and/or a Finite Impulse Response (FIR) linear equalizer. | 2010-02-25 |
20100046599 | APPARATUS AND METHOD FOR ACQUIRING INITIAL COEFFICIENT OF DECISION FEEDBACK EQUALIZER USING FAST FOURIER TRANSFORM - Provided is an apparatus and method for acquiring an initial coefficient of a DFE using an FFT. The apparatus includes a channel impulse response estimating unit for estimating a non-causal impulse response by delaying a received signal of a time domain and transforming it into frequency domain signals; a feedforward filter coefficient acquisition unit for extracting a predetermined number of signals from the non-causal channel impulse response signals estimated by the channel impulse response estimating unit, and transforming the same into frequency domain signals to acquire an initial coefficient of a feedforward filter; and a feedback filter coefficient acquisition unit for transforming the non-causal channel impulse response signals estimated by the channel impulse response estimating unit into frequency domain signals, multiplying the same by the initial coefficient of the feedforward filter, and transforming the results of multiplication into time domain signals to calculate an initial coefficient of a feedback filter. | 2010-02-25 |
20100046600 | Methods and Circuits for Asymmetric Distribution of Channel Equalization Between Devices - A transceiver architecture supports high-speed communication over a signal lane that extends between a high-performance integrated circuit (IC) and one or more relatively low-performance ICs employing less sophisticated transmitters and receivers. The architecture compensates for performance asymmetry between ICs communicating over a bidirectional lane by instantiating relatively complex transmit and receive equalization circuitry on the higher-performance side of the lane. Both the transmit and receive equalization filter coefficients in the higher-performance IC may be adaptively updated based upon the signal response at the receiver of the higher-performance IC. | 2010-02-25 |
20100046601 | HIGH SPEED RECEIVE EQUALIZER ARCHITECTURE - Various example embodiments are disclosed. According to an example embodiment, an apparatus may include a continuous time filter, a decision feedback equalizer, a clock and data recovery circuit, and an adaptation circuit. The adaptation circuit may be configured to adapt equalization according to at least one dithering algorithm by adjusting a delay adjust signal based on a mean square error of equalized data signals. | 2010-02-25 |
20100046602 | System and Method For Deriving Symbol Timing - A symbol timing derivation system derives receiver timing from received symbols which avoids the need for a pilot tone, thereby reducing power consumption and expanding usable bandwidth. The system is implemented by using a calculation that finds the timing phase error. The timing phase error is then averaged and controls a phase locked loop (PLL). This PLL in turn controls a voltage-controlled oscillator, which handles the modem receiver timing. A centroid calculation can be included to bias the voltage-controlled oscillator to push the equalizer coefficients back to the ideal position. The system can be implemented in either a point-to-point modem environment or a multi-point environment, for example, but not limited to, MVL or DMT. The voltage-controlled oscillator may also be implemented to control transmitter timing, so that the central office modem and the remote modem will operate more-or-less synchronously, reducing the need for large equalizer corrections at either end. | 2010-02-25 |
20100046603 | Method and apparatus for transmitting and receiving convolutionally coded data - The invention describes a method and apparatus for transmitting data using a convolutional code used with a combination of Pulse Position Modulation and Binary Phase Shift Keying which has error rate performance that is as good as the best convolutional code when used with the more common binary phase shift keying (BPSK). | 2010-02-25 |
20100046604 | METHOD AND SYSTEM FOR IMPROVING CHANNEL ACQUISITION PERFORMANCE - A method and system for processing a video program are disclosed. For example, the method receives a video program. The method receives a delayed version of the video program. The method decodes the delayed version of the video program until a corresponding anchor frame is found in the video program and in the delayed version of the video program. The method concludes by switching from decoding the delayed version of the video program to decoding the video program beginning with the corresponding anchor frame. | 2010-02-25 |
20100046605 | VIDEO IMAGE SEGMENTATION - Techniques for segmenting an image of an object are provided. In some embodiments, an image segmentation apparatus includes an image input unit and an image processing unit. The image input unit is configured to receive as input a video image having a first image frame and a second image frame that is consecutive to the first image frame. The image processing unit is configured to segment the second image frame based at least in part on information on the first image frame. | 2010-02-25 |
20100046606 | VIDEO WATERMARKING - A method of watermarking a video signal includes encoding the video signal using at least one encoding parameter that is time-varied according to a watermarking pattern. The parameter affects information lost while encoding the signal. The parameter may be a quantization factor corresponding to a particular coefficient of an encoding transform. The parameter may be an element of a quantization matrix corresponding to a particular coefficient in a block DCT transform. The method may be implemented in devices with limited processing resources by means of a software update. The method enables the devices to imprint an encoded signal with a robust watermark, which may survive subsequent decompression and recompression. Alternatively, a video signal may be watermarked by modifying a magnitude of a non-dc spatial frequency component in a manner which varies with time according to a watermarking pattern. Corresponding watermark detection methods and watermarking devices also are disclosed. | 2010-02-25 |
20100046607 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The invention discloses an image processing apparatus and an image processing method. A server can transmit a first image and a second image. In an embodiment, the apparatus includes a receiving/transmitting unit, a processing unit and a display unit. The receiving/transmitting unit can communicate with the server to receive the first image and the second image. The processing unit is coupled to the receiving/transmitting unit and the display unit. The processing unit is for selectively recompressing the first image at a first compression ratio and then controlling the display unit to display the first image. In addition, the processing unit transmits the selected first compression ratio to the server such that the server compresses the second image at the first compression ratio and transmits it to the receiving/transmitting unit. | 2010-02-25 |
20100046608 | RECORDING MEDIUM, PLAYBACK APPARATUS AND METHOD, RECORDING METHOD, AND COMPUTER-READABLE PROGRAM - A BD-ROM stores a video stream and a graphics stream. The video stream represents a moving picture. The graphics stream is used for overlaying a multi-page menu on the moving picture, and includes interactive control information (ICS) and graphics data (ODS) used for generating the multi page menu. A PTS attached to a PES packet containing the interactive control information shows timing for the first presentation of a main page the multi-page menu in accordance with the proceeding of the video stream playback. In addition, the interactive control information includes information (selection_time_out_pts) showing a timeout upon which a button on a page of the multi-page menu is automatically activated, and information (user_time_out_duration) showing a timeout upon which a sub-page of the multi-page menu is automatically removed. | 2010-02-25 |
20100046609 | PICTURE CODING APPARATUS AND PICTURE DECODING APPARATUS - A picture coding apparatus which generates a stream so as to be able to decode a picture by obtaining a picture parameter set necessary for decoding the picture even at the time of trick-play, the apparatus including: a slice coding unit which codes the picture and generates coded data; a picture parameter set (PPS) generation unit which generates sequence parameter set (SPS); a PPS generation unit which generates the PPS; and an access unit (AU) determination unit which stores pieces of coded data respectively into access units of a random access unit (RAU) and stores the SPS into a first AU, and stores the PPS into the first AU or into the AU in which one piece of the coded data that refers to the PPS is stored. | 2010-02-25 |
20100046610 | IMAGE ENCODING DEVICE, AND IMAGE DECODING DEVICE - The image encoding device of the present invention is an image encoding device that encodes a still image and a moving image, the device including: a determination unit that determines a first upper limit and a second upper limit, the first upper limit indicating an upper limit of the amount of code per picture of still images, and the second upper limit indicating an upper limit of the amount of code per picture in a moving image; an encoding unit that encodes each of the still images and the moving image in such a manner that the first and second upper limits are satisfied; a multiplexing unit that generates a stream by multiplexing the encoded still images and the encoded moving image; a generation unit that generates management information that identifies the first and second upper limits; and an output unit that outputs the stream and the management information. | 2010-02-25 |
20100046611 | IMAGE ENCODING DEVICE, AND IMAGE DECODING DEVICE - The image encoding device of the present invention is an image encoding device that encodes a still image and a moving image, the device including: a determination unit that determines a first upper limit and a second upper limit, the first upper limit indicating an upper limit of the amount of code per picture of still images, and the second upper limit indicating an upper limit of the amount of code per picture in a moving image; an encoding unit that encodes each of the still images and the moving image in such a manner that the first and second upper limits are satisfied; a multiplexing unit that generates a stream by multiplexing the encoded still images and the encoded moving image; a generation unit that generates management information that identifies the first and second upper limits; and an output unit that outputs the stream and the management information. | 2010-02-25 |
20100046612 | CONVERSION OPERATIONS IN SCALABLE VIDEO ENCODING AND DECODING - Techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described. For example, given reconstructed base layer video in a low resolution format (e.g., 4:2:0 video with 8 bits per sample) an encoding tool and decoding tool adaptively filter the reconstructed base layer video and upsample its sample values to a higher sample depth (e.g., 10 bits per sample). The tools also adaptively scale chroma samples to a higher chroma sampling rate (e.g., 4:2:2). The adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video, which typically makes compression of the inter-layer residual video more efficient. The encoding tool also remaps sample values of the inter-layer residual video to adjust dynamic range before encoding, and the decoding tool performs inverse remapping after decoding. | 2010-02-25 |
20100046613 | MULTI-DIMENSIONAL AND MULTI-STAGE TRANSFORMING APPARATUS AND METHOD - Provided are an apparatus for multi-stage transforming a plurality of unit blocks in multi-dimension that can improve compression efficiency of video data by collecting Discrete Cosine Transforming (DCT) coefficients of neighboring blocks and performing an additional transformation based on the DCT coefficients of an original picture and a differential picture. The method includes the steps of: performing a Discrete Cosine Transform (DCT) on inputted picture data and selecting R blocks of a predetermined size from DCT picture data, where R is a natural number equal to or greater than 2; arranging DCT coefficients of each of the selected R blocks according to each frequency in one-dimension; and performing one-dimensional transformation again on the DCT coefficients arranged in one-dimension. | 2010-02-25 |
20100046614 | APPARATUS AND METHOD FOR ESTIMATING COMPRESSION MODES FOR H.264 CODINGS - The present invention relates to technology of compressing large image data in order to effectively use a storage medium and efficiently use a communication medium in an image data compression technique field, and more particularly, to fast compression mode calculation in H.264. The present invention provides an H.264 compression mode estimation apparatus comprising: a macroblock image characteristic calculator calculating a macroblock image characteristic from macroblock image information; a macroblock mode estimator which comprises mode history tables and a table management unit managing these tables, in order to estimate a mode of a current macroblock from macroblock coordinates; and a mode estimation optimization judgment unit calculating RD-cost for the mode estimation and selecting an optimal mode in order to prevent the spread of errors of the estimated mode. | 2010-02-25 |
20100046615 | METHOD AND SYSTEM FOR MOTION-COMPENSATED FRAME-RATE UP-CONVERSION FOR BOTH COMPRESSED AND DECOMPRESSED VIDEO BITSTREAMS - A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and/or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion. | 2010-02-25 |