22nd week of 2013 patent applcation highlights part 31 |
Patent application number | Title | Published |
20130136120 | Client Routing in a Peer-to-Peer Overlay Network - A method of client routing in a peer-to-peer (“P2P”) overlay network is provided. In one embodiment, the method of client routing in a P2P overlay network comprises requesting communication with a client by a first peer using the P2P overlay network, wherein said first peer is directed to a second peer to which said client is registered in the P2P overlay network; determining that said client is not attached to said second peer in the P2P overlay network and said client has access to another network; providing said second peer with said client's location in the P2P overlay network using said other network, wherein said client's location is associated with a third peer to which said client is attached and not registered in the P2P overlay network; forwarding said client's location from said second peer to said first peer using the P2P overlay network, and using said client's location to communicate with said client by said first peer using the P2P overlay network. | 2013-05-30 |
20130136121 | METHOD OF TRANSPORTING DATA WITH EMBEDDED CLOCK - A method of transporting data with embedded clock including following steps is provided. In an initial stage, a first bit length and a second bit length are determined. Original data is received. The original data is packed with every N bits as a packet, where N is at least 4. It is analyzed whether a long-run length of long-run data with consecutive same bit data in the packet is greater than N/2. The packet is coded to embed clock/toggle information with the first bit length into the packet. The clock/toggle information determines whether the long-run data is toggled. An appearance frequency of the clock/toggle information is clock information. If the long-run length is not greater than N/2, the long-run data is not toggled. If the long-run length is greater than N/2, bit with the second bit length after an L | 2013-05-30 |
20130136122 | USING MULTIPLE IGMP QUERIERS IN A LAYER 2 NETWORK - Techniques disclosed herein include systems and methods for extending an IGMP broadcast domain (multicast domain) across a transport network without implementing IGMP snooping within the core of the transport network, yet while providing efficient transport within the core of the transport network. Techniques include dividing a single IGMP interface into multiple IGMP domains or sub-domains. A separate Querier is then elected for each IGMP domain using the single IGMP interface. Edge nodes of the transport network can be configured as the multiple IGMP Queriers, and then re-distribute sender information via a separate routing protocol. Requests can then be sent using the transport network control messaging or routing protocol instead of IGMP snoop messages to advertise multicast data streams in between the multiple IGMP domains (across the transport network). Traffic can then delivered efficiently between isolated access networks of a single Service Layer 2 Network. | 2013-05-30 |
20130136123 | METHOD AND APPARATUS FOR IMPLEMENTING A FLEXIBLE VIRTUAL LOCAL AREA NETWORK - A method and apparatus for implementing a virtual local area network. The method includes determining a global virtual local area network for transmitting a data frame in response to receiving the data frame at a first switch, encapsulating the data frame based at least in part on said determination and transmitting it to at least one second switch over the determined global virtual local area network. The data frame is received at the second switch and an identifier of the global virtual local area network is obtained according to the data frame. Based at least in part on the identifier of the global virtual local area network, it is determined that which local virtual local area network served by the second switch the de-capsulated data frame can be sent to. | 2013-05-30 |
20130136124 | PARALLELLY COUPLED STACKABLE NETWORK SWITCHING DEVICE - A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency. | 2013-05-30 |
20130136125 | BANDWIDTH OPTIMIZATION FOR REMOTE DESKTOP PROTOCOL - The processing of a first data stream to generate a second stream conforming to a remote desktop protocol (RDP) is described. Operations may include facilitating storage of first data from the first stream at a first index indicated in the first stream, facilitating retrieval of second data from a second index included in the first stream, and facilitating generation of the second stream conforming to the RDP and including the first and second data. Additionally, the processing of a third data stream conforming to the RDP to stream a fourth stream is described. Operations include facilitating processing of the third stream to identify a package data unit (PDU), facilitating storing of a hash value corresponding to the PDU, and facilitating generating an altered PDU for inclusion in the fourth stream and including an index identifying a location in memory storing the hash value. | 2013-05-30 |
20130136126 | DATA CENTER NETWORK SYSTEM AND PACKET FORWARDING METHOD THEREOF - A data center network system and a packet forwarding method thereof are provided. The data center network system includes a virtual bridge and an address resolution protocol (ARP) server. The virtual bridge intercepts an ARP request having an identification field and a destination IP address field and adds a corresponding virtual data center identification to the identification field of the ARP request and redirecting the ARP request to the ARP server. Additionally, the ARP server queries a corresponding MAC address according to an IP address recorded in the destination IP address field of the ARP request and the corresponding VDCID recorded in the identification field of the ARP request, and transmits the corresponding MAC address in response to the ARP request. Accordingly, the same private IP address can be reused in the data center network system. | 2013-05-30 |
20130136127 | System and Method for Efficient Matching of Regular Expression Patterns Across Multiple Packets - A system and method for efficient matching regular expression patterns across multiple packets. A deep packet inspection system can be embodied in a switch ASIC using a flow tracker and a signature matching engine. The flow tracker can be positioned in an ingress portion of the switch ASIC at a location where packets in a bi-direction flow can be observed and recorded. The flow tracker generates a signature match request that is forwarded to a signature matching engine in an auxiliary pipeline. The signature matching engine is enabled to perform cross-packet signature matching using signature matching state machines and reports the signature matching results to the flow tracker using a response packet that is sent to the ingress pipeline. | 2013-05-30 |
20130136128 | ENCAPSULATING TRAFFIC WHILE PRESERVING PACKET CHARACTERISTICS - A method for encapsulating a packet of data from a data flow is described. The packet comprises a flow network header for identifying a source network address and a target destination network address and a flow transport network header for identifying a source port and a target destination port. The method comprises the following steps. The flow network header is replaced with an encapsulation network header for identifying an encapsulation network address and a decapsulation network address. The decapsulation network address specifies the address of a decapsulation node. The flow transport header is replaced with an encapsulation transport header for identifying an encapsulation port and a decapsulation port. The decapsulation port is configured to be the same as the target destination port. A method for decapsulating the encapsulated packet, as well as network nodes configured to implement the methods, are also described. | 2013-05-30 |
20130136129 | ZERO-CYCLE ROUTER FOR NETWORKS ON-CHIP - A router includes a plurality of virtual networks, a plurality of output links, at least one decoder and arbitration circuitry. Each virtual network has a plurality of virtual network inputs and a plurality of virtual network outputs. Each virtual network output is associated with an output link. The decoder decodes a header of a data unit received on a virtual network of one of the virtual network inputs. The decoder generates a first request and a second request. The first request is for the allocation of a virtual network output of the virtual network to the virtual network input. The second request is for the allocation of an output link associated with the virtual network output to the virtual network output. The arbitration circuitry performs arbitration of the first request and arbitration of the second request in parallel. | 2013-05-30 |
20130136130 | RELAY SERVER AND RELAY COMMUNICATION SYSTEM - A relay server stores a first routing target address that is an address to which the relay server can transfer a packet and a second routing target address to which another relay server located in another LAN can transfer a packet. The relay server stores an initial communication setting and a current communication setting. The relay server transmits only the first routing target address that is permitted in the initial communication setting to another relay server and receives the second routing target address from another relay server, to establish a routing session with another relay server. The relay server registers the initial communication setting as the current communication setting. The relay server performs routing control of the packet based on pieces of address filter information about the relay server and another relay server. | 2013-05-30 |
20130136131 | RELAY DEVICE AND ACTIVATION METHOD OF ELECTRONIC DEVICE - A relay device for relaying a communication packet between a first network and a second network. The relay device stores a first correlation information correlating an Internet Protocol (IP) address assigned to an electronic device in the first network to a Media Access Control (MAC) address of the electronic device. The relay device then determines a MAC address of a forwarding destination of a specific communication packet for enabling a service provided by the electronic device after activation of the electronic device by referring to at least the first correlation information using destination information in the specific communication packet, when the specific communication packet sent from the second network toward the first network is received by the relay device; and transmits an activation request packet to the electronic device using the determined MAC address. | 2013-05-30 |
20130136132 | POWER LINE COMMUNICATION SYSTEM AND AN INTELLIGENT METER - A power line communication system including a plurality of intelligent devices in communication with a power line and operable to monitor energy usage at a site and communicate usage data onto the power line, and a controller also in communication with the power line, wherein each intelligent device maintains a routing table identifying a first set of other intelligent devices downstream of it relative to the controller that it can communicate with directly and identifying a second set of other intelligent devices downstream of it relative to the controller that it can communicate with through one or more of the first set of other intelligent devices. | 2013-05-30 |
20130136133 | DISTRIBUTED VIRTUAL NETWORK GATEWAYS - Computerized methods, systems, and computer-readable media are provided for distributing virtualized gateway functionality to multiple nodes within a physical network. Initially, drivers that carry out the gateway functionality are provisioned to cooperate with endpoints instantiated on the network nodes, while a directory service is implemented to maintain a mapping between virtual internet protocol (IP) addresses and location-dependent addresses, as well as a table enumerating transformation actions according to known pathways connecting the endpoints within a network. In operation, the directory service replies to requests from the driver (carrying source and destination IP addresses of data packets) with the appropriate location-dependent addresses (utilizing the mapping) and the appropriate transformation action(s) (utilizing the table). The transformation action(s) include rewriting headers of the data packets to include the location-dependent addresses, encapsulating the data packets as inner data packets within respective outer data packets, or configuring the data packets with a tunneling protocol. | 2013-05-30 |
20130136134 | SEQUENCING PACKETS FROM MULTIPLE THREADS - A device may reserve a slot for a received packet in a packet ordering queue (POQ), convey the packet to one of a plurality of threads for processing, obtain the packet from the one of the plurality of threads after the packet has been processed, organize the packet in the POQ in accordance with a position of the reserved slot, and release the packet from the POQ if the reserved slot is a head of the POQ. | 2013-05-30 |
20130136135 | Method and Device for Securing Data Packets to be Transmitted via an Interface - A method for securing data packets to be transmitted via an interface includes determining a check number over at least a portion of a first data packet and at least one portion of a second data packet. For this purpose, the first data packet is arranged according to a transfer protocol in a first data frame and the second data packet is arranged according to the transfer protocol in a second data frame. | 2013-05-30 |
20130136136 | APPARATUS AND METHOD FOR PROCESSING RECEIVED DATA - An apparatus, upon receiving a first data segment, stores, in a processing queue, a data-segment processing request associated with the first data segment. When the data-segment processing request is extracted from the processing queue, the apparatus performs predetermined processing on the first data segment associated with the data-segment processing request to generate a second data segment, and stores the generated second data segment in a reception buffer provided for each of destinations of data segments. The apparatus stores a holding-stop processing request in the processing queue when the second data segment is stored in the reception buffer being empty, and sends all of one or more second data segments stored in the reception buffer, at once, to a destination associated with the reception buffer when the holding-stop processing request is extracted from the processing queue. | 2013-05-30 |
20130136137 | APPARATUS AND METHOD FOR DATA TRANSMISSION - Local concentration of accessing loads on a data buffer during data cell reading is reduced. Also, by providing sufficient time for a data cell reading operation with respect to data cell transmission timing, transmission rate fluctuation of CBR data cells in a transmitting side is reduced. When transmission of a new data stream is added, controller in a cell control unit refers to a transmitted data cell count of VC information processed through a slot immediately before. The controller determines whether a data cell transmitted through the slot immediately before is a head portion of a packet or not. If the data cell transmitted through the slot immediately before is the head portion of the packet, the controller only adds the VC information of the data stream to a shaper link list, and withholds transmission of the data cell. On the other hand, if the data cell transmitted through the slot immediately before is not the head portion of the packet, then the controller adds the VC information of the data stream, and transmits the data cell. | 2013-05-30 |
20130136138 | Interfaces To Manage Direct Network Peerings - Methods and apparatus for interfaces to manage direct network peerings. A system may include a data center, endpoint routers and a connectivity coordinator. The coordinator implements a programmatic interface defining connectivity operations. The coordinator receives a request for dedicated connectivity to data center resources, formatted according to the interface. The coordinator selects a target endpoint router at which to establish a physical link to implement the dedicated connectivity, and transmits a response identifying the target endpoint router and including configuration instructions for setting up a physical link for the dedicated connectivity. | 2013-05-30 |
20130136139 | Accelerating Service Processing Using Fast Path TCP - A service gateway includes a fast path module for processing data packets without using packet buffers and a normal path module for processing data packets using packet buffers. The fast path module receives a service request data packet from a client side session, determines that the service request data packet cannot be processed by the fast path module, and in response, sends the service request data packet to the normal path module. After receiving the service request data packet, the normal path module retrieves a first proxy session record created by the fast path module, where the first proxy session record is associated with a client session record for the client side session, creates a second proxy session record based on the service request data packet and the client session record, and processes the service request data packet according to the second proxy session record. | 2013-05-30 |
20130136140 | RELAY SERVER AND RELAY COMMUNICATION SYSTEM - A first relay server stores a first routing target address and a second routing target address. The first relay server stores a first routing target address and a virtual address allocated to the first routing target address while being correlated with each other. The first relay server allocates the virtual address to the first routing target address. The first relay server sets whether communication is conducted using the virtual address or the first routing target address with respect to each second relay server. The first relay server transmits the virtual address allocated to the first routing target address to the second relay server, and receives the second routing target address from the second relay server, so as to establish a routing session with the second relay server. The first relay server performs routing control based on the exchanged routing target address. | 2013-05-30 |
20130136141 | WRR SCHEDULER CONFIGURATION FOR OPTIMIZED LATENCY, BUFFER UTILIZATION - A method includes receiving network information for calculating weighted round-robin (WRR) weights, calculating WRR weights associated with queues based on the network information, and determining whether a highest common factor (HCF) exists in relation to the calculated WRR weights. The method further includes reducing the calculated WRR weights in accordance with the HCF, when it is determined that the HCF exists, and performing a WRR scheduling of packets, stored in the queues, based on the reduced WRR weights. | 2013-05-30 |
20130136142 | SYSTEMS AND METHODS TO TRANSMIT INFORMATION AMONG A PLURALITY OF PHYSICAL UPSTREAM CHANNELS - A communication system includes a supervisory node (e.g., a headend) and one or more remote nodes (e.g., cable modems). The supervisory node or a remote node monitors a characteristic associated with the communication system. Remote node transmits an upstream communication among a plurality of physical upstream channels based on the characteristic. The average transmit power used to transmit the upstream communication among the plurality of physical upstream channels is no greater than the average transmit power that would be necessary to transmit the upstream communication using a single physical upstream channel at a lower data rate. | 2013-05-30 |
20130136143 | COMMUNICATION APPARATUS CAPABLE OF SELECTING USE BANDWIDTH, METHOD OF CONTROLLING COMMUNICATION APPARATUS, AND STORAGE MEDIUM - A communication apparatus which is capable of easily selecting a use bandwidth desired by a user when the user transmits data using via a network in which the use charge is different depending on the use bandwidth. A CPU acquires charge information indicative of a use charge in each of use bandwidths of the network. Further, the CPU determines a use bandwidth to be used for transmitting the data, according to the size of the data and the acquired charge information. | 2013-05-30 |
20130136144 | METHOD FOR TRANSMITTING/RECEIVING INTERNET-BASED CONTENT AND TRANSMITTER/RECEIVER USING SAME - The present invention relates to a method for transmitting/receiving contents through a network such as the Internet, and to a transmitter/receiver using same, the transmission method comprising: converting content stored in a file format into a delivery format; and transmitting the content converted into the delivery format using an IP packet, wherein the delivery format includes indicator information for expressing whether a program clock reference (PCR) has been transmitted to the IP packet. | 2013-05-30 |
20130136145 | TIME MESSAGE PROCESSING METHOD, APPARATUS AND SYSTEM - A time message processing method, apparatus and system are provided by the embodiments of the present. The method includes: receiving a time message transmitted from a transmitter; determining whether the time message is an event message according to the identifier information in the time message, wherein the identifier information is the information carried in the field which is not encrypted with the Internet protocol security by the transmitter. With the method, apparatus and system provided by the embodiments of the present, after receiving the time message, the time message receiver can directly determine whether the time message is the event message according to the identifier information carried in the field which is not encrypted by the Internet protocol security in the time message, without any decryption, thereby solving the problem in the prior art that it cannot be determined whether the time message is an event message. | 2013-05-30 |
20130136146 | TEMPERATURE CONTROL OF A FIBER LASER SYSTEM - Techniques and architecture are disclosed for controlling the temperature of a fiber laser system. In some embodiments, a single thermoelectric cooler (TEC) may be utilized to control the temperature of multiple system components. In some embodiments, a TEC may be physically/thermally coupled to a laser diode, which in turn may be physically/thermally coupled with a mounting plate to which one or more fiber grating holders are physically/thermally coupled, and an optical fiber that is operatively coupled with the laser diode may be physically/thermally coupled with the one or more fiber grating holders. In some embodiments, this may provide a thermal pathway/coupling between the optical fiber (e.g., its fiber grating(s)), and the TEC. In some embodiments, this may reduce/minimize the quantity of temperature control components, reduce system size/complexity, increase system dependability, and/or increase system performance/efficiency. Numerous configurations and variations will be apparent in light of this disclosure. | 2013-05-30 |
20130136147 | TUNABLE MODE LOCKED LASER - A laser for emitting simultaneously a first and second laser lights having respectively first and second wavelength differing from each other. The laser comprises: an optical resonator defining a first optical path and a second optical path, the first laser light travelling along the first optical path and the second laser light travelling along the second optical path; a modulated gain element inserted in the optical resonator for amplifying the first and second laser lights as the first and second laser lights propagate in the optical resonator respectively along the first and second optical paths, the modulated gain element having a variable gain modulated with a modulation period, round trip times of the first and second laser lights along respectively the first and second optical paths being respective integer multiples of the modulation period; and an output port for releasing the first and sec and laser lights from the optical resonator. | 2013-05-30 |
20130136148 | Quantum Cascade Laser Design With Stepped Well Active Region - Included are embodiments of a quantum cascade laser structure. Some embodiments include a plurality of quantum wells and a plurality of barriers, at least a portion of which define an active region. In some embodiments, a photon is emitted in the active region when an electron transitions from an upper laser state in the active region to a lower laser state in the active region. Additionally, a final quantum well in the plurality of quantum wells may define the active region, where the final quantum well extends below an adjacent quantum well in the active region. Similarly, the final quantum well may include a thickness that is less than a thickness of the adjacent quantum well in the active region. | 2013-05-30 |
20130136149 | TEMPERATURE SENSOR WITH DIGITAL TRIM AND TRIMMING METHOD THEREOF - A method for calibrating a temperature sensor comprises: receiving first and second reference voltages from respective first and second tap points within a string of sequentially connected resistive devices of the temperature sensor. Each resistive device has a resistance that varies as a function of temperature. The receiving is performed at two or more known temperatures. A respective code is output corresponding to each respective one of the two or more known temperatures, based on the first and second reference voltages. At least one of the tap points is adjusted, based on the two or more known temperatures and the respective output codes. | 2013-05-30 |
20130136150 | Device for Measuring the Flash Point of Liquids and Solids - Device for measuring the flash point of liquids and solids includes a measurement chamber (formed by a measurement basin and a lid) and which is provided with means for heating the liquid or the solid in the basin, an electrical igniter having a spark gap, temperature sensors, a pressure measuring apparatus and a press-on device for tightly connecting the measurement basin and the lid. A control device is provided in order to control the heating means, the igniter and the press-on device and to collect the measured values of the temperature sensors and the pressure measuring apparatus. The control device is formed by a computer designed as an embedded system, which is connected to the heating means, the igniter, the press-on device, the temperature sensors and the pressure measuring apparatus by means of an interface device. The measurement chamber and the control device are arranged in a common housing. | 2013-05-30 |
20130136151 | HIGHLY ADAPTIVE THERMAL PROPERTIES MEASUREMENT SYSTEM AND MEASURING METHOD THEREOF - A highly adaptive thermal properties measurement system and measuring method thereof, for measuring various thermal property values of a device under test without actually lighting up the device under test, are disclosed. The measurement system includes a light source unit, a light modulation module, a holding unit, a thermal reflection unit, a thermal signal capture unit, and a control and computation unit. A light field provided from the light source unit is first modulated by the light modulation module for its distribution of intensity, and then illuminates on the device under test such that the device under test is heated in a specific mode so as to simulate a temperature distribution of the device under test in a state of continuous operation. Further, the control and computation unit computes various thermal property values of the device under test based on a top-surface thermal signal and a bottom-surface thermal signal captured by the thermal signal capture unit. | 2013-05-30 |
20130136152 | PASSIVE TEMPERATURE SENSOR - A passive temperature sensor with cordless measurement signal transmission includes: a coupling element that is implemented to draw electric energy from a magnetic or electromagnetic alternating transmission field; an energy rendering element that is implemented to provide an energy supply signal based on the drawn electric energy; a temperature measurement circuit that is implemented to generate, when supplied with the energy supply signal, a sensor alternating signal whose frequency depends on an environmental temperature; and a switching element that is implemented to change, based on the sensor alternating signal, a physical characteristic allocated to the coupling element to obtain an impact on the alternating transmission field based on the sensor alternating signal. | 2013-05-30 |
20130136153 | ROBUST STATOR WINDING TEMPERATURE SENSOR - Disclosed herein, among other things, is a stator winding temperature sensor. According to an embodiment, the sensor includes at least one sensing wire coil adapted to be connected to a stator. The sensor also includes a body, including a core material surrounding at least a portion of the sensing wire coil, and a laminate material over the core material. The body has a thickness adapted to protect the sensing wire coil. The sensor includes a lead wire adapted to connect to an external monitoring device. The sensing wire coil is electrically connected to the lead wire at a lead step portion of the sensor. In addition, the sensor includes a tab extending from the lead wire and encompassing the lead step. The tab protects the lead step and the sensing wire coil in a region where the sensor extends over an end of the stator. | 2013-05-30 |
20130136154 | CIRCUITS, DEVICES, AND PROCESSES FOR IMPROVED POSITIONING SATELLITE RECEPTION AND OTHER SPREAD SPECTRUM RECEPTION - An integrated circuit for facilitating spread spectrum reception of data having a data bit period includes an hypothesis search circuit ( | 2013-05-30 |
20130136155 | PROCESS FOR SUB-MICROSECOND TIME TRANSFER USING WEAK GPS/GNSS SIGNALS - Sub-microsecond time transfer in a GPS/GNSS receiver using a weak GPS/GNSS signal is provided. The digitized complex baseband signal and the generated PN code are cross-correlated for each code period so as to output a complex correlation value at each code epoch of the generated PN code, where a sequence of the output correlation values form a data stream representing the navigation message. Bit synchronization generates bit sync pulses at bit boundaries. The location of a target segment having a known sequence at a known bit location in the navigation message is detected by searching through a plurality of subframes and accumulating search results for the plurality of subframes. Transmission time of the target segment is determined from the detected location of the target segment, with a certain time ambiguity. Accurate local time is determined by solving the time ambiguity using approximate time obtained from an external source. | 2013-05-30 |
20130136156 | COMMUNICATING ELECTRONIC MAP DATA - A method of communicating electronic map data is disclosed, wherein map data is compiled as at least one cell comprising a plurality of vector data records and a plurality of feature data records to, for instance, the IHO S-57 standard. During the compilation, the respective bit lengths of a plurality of vector data values are reduced and both the bit-reduced vector data values and feature data values are entropy encoded. The compiled cell data, which may be an Electronic Navigational Chart, is then compressed, encrypted and digitally signed according to, for instance, the IHO S-63 standard. The encrypted and digitally signed cell data is eventually transmitted to a remote navigational system, which may be an Electronic Chart Display and Information System, over a network, for instance in a satellite telecommunication. A system embodying the method is also disclosed. | 2013-05-30 |
20130136157 | METHOD FOR TRANSMITTING AND RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME - A method for receiving a data frame by a receive station in a wireless local area network (WLAN) system is provided. The method includes: receiving a signal A field including a multiple input multiple output (MIMO) indicator and including a first signal A sub-field and a second signal A sub-field each transmitted as different orthogonal frequency division multiplexing (OFDM) symbols; determining a processing type of a subsequently transmitted signal based on the signal A field; receiving a data field; and obtaining data by interpreting the data field based on the processing type of the signal. Different modulation schemes are applied to a higher frequency region and a lower frequency region on a subcarrier of the first signal A sub-field. | 2013-05-30 |
20130136158 | Control Circuitry - An arrangement is described in which phase parity or phase opposition between two signals can be determined, and if necessary remedial action may be taken. | 2013-05-30 |
20130136159 | INTERFERENCE-COGNITIVE TRANSMISSION - Interference cognitive devices are described. An interference cognitive device can be collocated with a transmitter of an interference cognitive transmitter (ICT), as receive chains or portions thereof at the ICT. An interference cognitive device can also be remote with respect to the transmitter, which operates in an interference cognitive network and receives data directly or indirectly from the interference cognitive device. The ICT uses the data to mitigate interference while continuing to operate in accordance with a performance metric. | 2013-05-30 |
20130136160 | SYSTEM AND METHOD FOR DESCRAMBLING THE PHASE OF CARRIERS IN A MULTICARRIER COMMUNICATIONS SYSTEM - A system and method that demodulates the phase characteristic of a carrier signal are described. The scrambling of the phase characteristic of each carrier signal includes associating a value with each carrier signal and computing a phase shift for each carrier signal based on the value associated with that carrier signal. The value is determined independently of any input bit value carried by that carrier signal. The phase shift computed for each carrier signal is combined with the phase characteristic of that carrier signal so as to substantially scramble the phase characteristic of the carrier signals. Bits of an input signal are modulated onto the carrier signals having the substantially scrambled phase characteristic to produce a transmission signal with a reduced PAR. | 2013-05-30 |
20130136161 | TRANSMITTER CONTROL IN COMMUNICATION SYSTEMS - Techniques are described to adaptively adjust the equalizer settings of each transmitter in a transmitter-receiver pair. The transmitter-receiver pair can be used at least with implementations that comply with 40GBASE-CR4 or 100GBASE-CR10. For implementations that comply with 40GBASE-CR4, equalizer settings of four transmitters may be independently established. | 2013-05-30 |
20130136162 | SEMICONDUCTOR INTEGRATED CIRCUIT AND ELECTRONIC APPARATUS PROVIDED WITH SAME - A semiconductor integrated circuit which operates based on a power supply voltage output from a power supply device configured to generate a voltage of a magnitude in accordance with an analog control signal includes: a first terminal to which the power supply voltage is applied; an internal interconnect which is connected to the first terminal, and distributes the power supply voltage to sections in the semiconductor integrated circuit; and a second terminal from which the analog control signal is output, wherein the analog control signal is generated to have a magnitude in accordance with a potential of the internal interconnect. | 2013-05-30 |
20130136163 | Communication Pathway Supporting an Advanced Split Microwave Backhaul Architecture - An advanced split ODU architecture is provided. The advanced architecture includes an indoor communication unit including a digital modem assembly configured to modulate and demodulate digital data, and also includes a digital interface module configured to transmit and/or receive the digital data, over a digital communication pathway, between the indoor communication unit and an external outdoor communication unit. The advanced architecture further includes an outdoor communication unit having a digital interface module configured to transmit and/or receive the digital data, over the digital communication pathway, between the outdoor communication unit and an external indoor communication unit, and also includes a digital to analog converter configured to convert the digital data to analog data and an analog to digital converter configured to convert the analog data to the digital data, and further includes an RF module configured to convert the analog data between a baseband and a radio frequency. | 2013-05-30 |
20130136164 | DUMMY PAGING CHANNEL DETECTION - This invention relates to a method and system for detecting a dummy paging channel message. the method includes the steps of: providing a reference dummy paging channel burst sequence; receiving a plurality of raw burst data; comparing every bits of the reference dummy paging channel burst sequence and every bits of a specific raw burst data of the raw burst data to obtain a matching metric according to a comparing result thereof; and determining the raw burst data is a dummy paging channel message if the matching metric is greater than a dummy paging channel threshold value. | 2013-05-30 |
20130136165 | RECEPTION DEVICE - An FFT unit subjects a P-times oversampling output of an AD converter to Fourier transform into a frequency domain signal. A distortion estimation unit estimates a distortion characteristic from a difference between the frequency domain signal and a reference signal. A correction coefficient calculation unit calculates a correction coefficient of a distortion characteristic. A correction unit corrects the frequency domain signal by using the correction coefficient. An IFFT unit subjects the corrected frequency domain signal to inverse Fourier into a time domain signal having the same sampling speed as a symbol speed, and outputs a partial time series. | 2013-05-30 |
20130136166 | Measuring Interference and Noise Power Using Non-Content Burst Periods - Embodiments describe a method of measuring noise and interference within transceivers of an OFDM wireless transmission system, or similar communication system, including a number of receivers communicating with one or more base stations in cell or sector arrangements. The transmitter schedules a transmission burst for a non-existent user (receiver) using wireless transmission traffic. In an OFDM system, this corresponds to a certain set of subcarriers in the time/frequency arrangement. Thus, in the receive frame structure, the data and pilot subcarriers are guaranteed to be only noise and interference from adjacent sectors. The receiver can accurately measure the noise and interference without needing to cancel out the transmitted signal. Therefore, the system is assured that there is no desired signal as part of this measurement. The noise and interference measurement process can be appropriately scheduled so that it does not impact the overall throughput of the system. This mechanism creates a deterministic place (in time and/or frequency) within the transmission, where no desired signal is required. | 2013-05-30 |
20130136167 | LARGEST CODING UNIT (LCU) OR PARTITION-BASED SYNTAX FOR ADAPTIVE LOOP FILTER AND SAMPLE ADAPTIVE OFFSET IN VIDEO CODING - This disclosure relates to techniques for performing sample adaptive offset (SAO) processes in a video coding process. A video coder may store sets of SAO information. The SAO information may include data indicative of offset values. The video coder may also store mapping information that maps at least some of the sets of SAO information for one or more sequence partitions of a frame of video data. Additionally, the video coder may perform the SAO processes for one of the partitions of the frame based on the stored SAO information and the stored mapping information. | 2013-05-30 |
20130136168 | METHOD AND AN APPARATUS FOR ENCODING OR DECODING A VIDEO SIGNAL - A method of processing a video signal is disclosed. The present invention includes receiving prediction information of a macroblock and filer information, predicting a current picture using the prediction information of the macroblock, and applying a filter using the predicted current picture and the filter information. | 2013-05-30 |
20130136169 | PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF - A picture coding method of the present invention codes a picture signal and a ratio of a number of luminance pixels and a number of chrominance pixels for the picture signal, and then one coding method out of at least two coding methods is selected depending on the ratio. Next, data related to a picture size is coded in accordance with the selected coding method. The data related to the picture size indicates a size of the picture corresponding to the picture signal or an output area, which is a pixel area to be outputted in decoding in a whole pixel area coded in the picture signal coding. | 2013-05-30 |
20130136170 | MOTION VECTOR CALCULATION METHOD, PICTURE CODING METHOD, PICTURE DECODING METHOD, MOTION VECTOR CALCULATION APPARATUS, AND PICTURE CODING AND DECODING APPARATUS - A motion vector calculation method which attains a higher compression rate, includes: a selection step of selecting one of at least one reference motion vector of a reference block; and a calculation step of calculating a motion vector of a current block to be processed, using the one reference motion vector selected in the selection step, and in the selection step, when the reference block has two reference motion vectors, one of the two reference motion vectors is selected based on whether the reference block is located before or after the current block in display time order, and when the reference block has only one reference motion vector, the one reference motion vector is selected. | 2013-05-30 |
20130136171 | Video Signal Encoder/Decoder with 3D Noise Reduction Function and Control Method Thereof - A video signal encoder/decoder with a 3D noise reduction function and a method thereof. The encoder comprises a storage module, a motion estimation module, a motion compensation module, a first noise reduction module and a coding module. The storage module stores at least one reference image. The motion estimation module receives a first image from an image input end and estimates a motion vector in accordance with the first image and the reference image. The motion compensation module produces motion compensation according to the reference image and the motion vector. The first noise reduction module produces a first noise reduction value with a temporal sequence association according to the first image and the motion compensation. The coding module produces coding data according to the motion compensation and the first noise reduction value. | 2013-05-30 |
20130136172 | METHOD AND APPARATUS FOR ENCODING VIDEO, AND DECODING METHOD AND APPARATUS - The present invention relates to a video encoding method and apparatus for setting and encoding quantization parameters, and to a video decoding method and apparatus for decoding and setting quantization parameters in a video encoding and decoding apparatus which uses blocks having various sizes and depths as encoding and decoding units. | 2013-05-30 |
20130136173 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An offset unit of an image coding apparatus includes: a band setting unit which sets at least one band subject to an offset process to be variable on a per-block basis among bands obtained by dividing possible tone levels of a pixel value of a decoded image into predetermined tone level sections; a band offset pixel classification unit which classifies, as one of classes, each pixel included in a current block to be processed in the decoded image, based on whether the pixel is included in the band set by the band setting unit; a band offset value calculation unit which calculates, for each class, an offset value that is an average of differences between pixel values of an input image and pixel values of the decoded image; and a band offset processing unit which adds the offset value to the pixel value of the decoded image for each class. | 2013-05-30 |
20130136174 | LUMA-BASED CHROMA INTRA PREDICTION - Systems, devices and methods for performing luma-based chroma ultra prediction are described. Down-sample filters may be applied to luma values of luma pixel positions to generate reconstructed luma values for chroma pixel positions in a prediction unit of an intra frame. The down-sampled reconstructed luma values may then be used to predict chroma values for the chroma pixel positions. In some implementations, a reconstructed luma value of a chroma position may be used to predict that position's chroma value. In other implementations, reconstructed luma values of neighboring chroma pixel positions may be analyzed to adaptively predict a chroma value for a chroma pixel position. | 2013-05-30 |
20130136175 | NON-SQUARE TRANSFORM UNITS AND PREDICTION UNITS IN VIDEO CODING - This disclosure proposes techniques for transform partitioning in an intra-prediction video coding process. In one example, for a given intra-predicted block, a reduced number of transform unit partition options is allowed, based on certain conditions. In another example, transform units are decoupled from prediction units for intra-predicted block. For a given prediction unit, transforms of different sizes and shapes from the prediction unit may be applied. In another example, a reduced number of intra-prediction modes are allowed for a prediction unit having a non-square shape. | 2013-05-30 |
20130136176 | ACTIVATION OF PARAMETER SETS FOR MULTIVIEW VIDEO CODING (MVC) COMPATIBLE THREE-DIMENSIONAL VIDEO CODING (3DVC) - In general, techniques are described for separately coding depth and texture components of video data. A video coding device for coding video data that includes a view component comprised of a depth component and a texture component may perform the techniques. The video coding device may comprise, as one example, a processor configured to activate a parameter set as a texture parameter set for the texture component of the view component, and code the texture component of the view component based on the activated texture parameter set. | 2013-05-30 |
20130136177 | VIDEO DECODING APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING METHOD, VIDEO CODING METHOD, AND PROGRAM - In the present invention, reconstructed images for prediction are stored in uncompressed reference picture memory and compressed reference picture memory. A video decoder stores in uncompressed reference picture memory a reconstructed image of a frame to be decoded which has been generated on the basis of a prediction, and among reconstructed images which have been stored in the uncompressed reference picture memory, compresses a reconstructed image that will not be used for prediction of the frame to be decoded and stores the image in the compressed reference picture memory. Using the reconstructed images which are stored in the uncompressed reference picture memory and the compressed reference picture memory, the video bitstream is decoded into a video. | 2013-05-30 |
20130136178 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - An image decoding method includes: restoring a selected prediction mode used in prediction at a time of coding; and decoding a current block included in coded image data to generate a decoded block, according to the prediction based on the selected prediction mode. The restoring includes: determining a first estimated prediction mode; determining a second estimated prediction mode different from the first estimated prediction mode; and restoring the selected prediction mode based on the mode information, the first estimated prediction mode, and the second estimated prediction mode. | 2013-05-30 |
20130136179 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE-SIZE MACROBLOCKS - The video encoding/decoding apparatus includes a video encoder for encoding macroblocks by each of prediction basic unit candidates, determining prediction basic units based on encoding costs for each of the prediction basic unit candidates, and generating a bitstream including image data encoded in determined prediction basic units, information on a prediction type for each of the determined prediction basic units, and prediction data depending on the prediction type; and a video decoder for extracting information on the prediction type for each of the prediction basic units, prediction data depending on the prediction type, and encoded image data from the bitstream, and generating a reconstructed image by decoding the encoded image data depending on the prediction type for each of the prediction basic units. | 2013-05-30 |
20130136180 | Unified Partitioning Structures and Signaling Methods for High Efficiency Video Coding - A method for video coding comprising signaling a prediction mode and a partition mode for a coding unit via a string of bits, wherein one of the bits in the string indicates whether or not the partition size for the coding unit is equivalent to the entire coding unit and another of the bits in the string indicates whether the coding unit partitions are horizontal strips or vertical strips, and wherein, when a slice type of the coding unit is either predictive or bi-predictive, one of the bits in the string indicates whether the prediction type is intra or inter. | 2013-05-30 |
20130136181 | CACHE PREFETCH DURING MOTION ESTIMATION - An apparatus having a cache and a processor. The cache may be configured to (i) buffer a first subset of reference samples of a reference picture to facilitate a motion estimation of a current block and (ii) prefetch a second subset of the reference samples while a first search pattern is being tested. The first search pattern used in the motion estimation generally defines multiple motion vectors to test. The reference samples of the second subset may be utilized by a second search pattern in the motion estimation of the current block. The prefetch of the second subset may be based on a geometry of the first search pattern and scores of the motion vectors already tested. The processor may be configured to calculate the scores of the motion vectors by a block comparison of the reference samples to the current block according to the first search pattern. | 2013-05-30 |
20130136182 | MOTION VECTOR REFINING DEVICE AND VIDEO REFINING METHOD THEREOF - A motion vector refining device and a video refining method thereof are provided. The motion vector refining device includes a motion estimation unit, a reliability analysis module and a motion vector mixing module. The motion estimation unit receives a plurality of frames in a video signal or using historical information (for example, motion vectors of closing frames) previously calculated by the motion estimation unit, so as to estimate N target motion vectors. The reliability analysis module analyzes spatial and temporal reliability factors of the N target motion vectors, so as to estimate and adjust N reliability weight values dynamically. The motion vector mixing module uses the reliability weight values to dynamically mix the target motion vectors to produce a refined motion vector. Therefore, the motion vector refining device and a motion interpolation apparatus using the same can avoid instability of a motion vector on an edge of a moving object. | 2013-05-30 |
20130136183 | APPARATUS FOR DECODING MOTION INFORMATION IN MERGE MODE - Disclosed is an apparatus for decoding motion information in merge mode for reconstructing a moving picture signal coded at a low data rate while maintaining a high quality of an image. The apparatus for decoding motion information in merge mode discloses the position of a merge mode candidate and the configuration of a candidate in order to predict motion information in merge mode efficiently. Furthermore, a merge candidate indicated by the merge index of a current block can be efficiently reconstructed irrespective of a network environment by adaptively generating a merge candidate based on the number of valid merge candidate. | 2013-05-30 |
20130136184 | IMAGE PREDICTION ENCODING/DECODING SYSTEM - An encoding target region in an image can be partitioned into a plurality of prediction regions. Based on prediction information of a neighboring region neighboring a target region, the number of previously-encoded prediction regions in the target region, and previously-encoded prediction information of the target region, a candidate for motion information to be used in generation of a predicted signal of the target prediction region as a next prediction region is selected from previously-encoded motion information of regions neighboring the target prediction region. According to the number of candidates for motion information selected, merging block information to indicate generation of the predicted signal of the target prediction region using the selected candidate for motion information and motion information detected by prediction information estimation means, or either one of the merging block information or the motion information is encoded. | 2013-05-30 |
20130136185 | REFERENCE PICTURE PREDICTION FOR VIDEO CODING - A video coder includes a forward coder and a reconstruction module determining a motion compensated predicted picture from one or more previously decoded pictures in a multi-picture store. The reconstruction module includes a reference picture predictor that uses only previously decoded pictures to determine one or more predicted reference pictures. The predicted reference picture(s) are used for motion compensated prediction. The reference picture predictor may include optical flow analysis that uses a current decoded picture and that may use one or more previously decoded pictures together with affine motion analysis and image warping to determine at least a portion of at least one of the reference pictures. | 2013-05-30 |
20130136186 | METHOD AND APPARATUS FOR ESTIMATING MOTION VECTOR USING PLURALITY OF MOTION VECTOR PREDICTORS, ENCODER, DECODER, AND DECODING METHOD - Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block. | 2013-05-30 |
20130136187 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAM THEREOF - A video encoding apparatus reduces residual energy of motion-compensated inter-frame prediction and improves the coding efficiency in encoding of an image in which optimal values of interpolation filter coefficients are changed in time and space. In the video encoding apparatus, a region division unit sequentially selects region division schemes one by one from among a plurality of prepared region division schemes, and divides a region of an image to be encoded. An interpolation filter coefficient switching unit switches interpolation filter coefficients of a decimal precision pixel for each divided region, and a predictive encoding unit performs predictive encoding. A region division mode decoding section selects a region division scheme, in which a cost is minimized among rate distortion costs calculated for each region division scheme. Using the selected region division scheme, the predictive encoding unit and a variable length encoding unit encode the image to be encoded. Information indicating the region division scheme is also subject to variable length encoding and is transmitted to a decoder. | 2013-05-30 |
20130136188 | MULTI-CORE DECOMPRESSION OF BLOCK CODED VIDEO DATA - Apparatus for and a method of decompression of block coded video data in a multi-core processor. The processor cores decode respective coded groups of blocks of video data independently, in parallel and deblock respective decoded groups of blocks of video data independently and in parallel with the decode operations and with other deblock operations. | 2013-05-30 |
20130136189 | METHOD AND SYSTEM FOR CONVERTING A DSS STREAM TO AN ENCRYPTED MPEG STREAM - Aspects of a method and system for converting a DSS stream to an encrypted MPEG stream are provided. In some applications, for example, an access device such as a set-top box may require the conversion of DSS proprietary transport streams to standardized MPEG transport streams in order to communicate with an external MPEG device, such as a personal computer. In this regard, conversion of a DSS stream to a MPEG stream may require the conversion of DSS formatted timing/synchronization information into MPEG formatted timing/synchronization information. Additionally, some applications may require the converted MPEG stream to be encrypted utilizing AES counter encryption. In this regard, when converting the DSS stream to an MPEG stream, the data may need to be packetized appropriately to enable the AES counter encryption. | 2013-05-30 |
20130136190 | ENHANCED GROUP OF PICTURES (GOP) ALIGNMENT IN MEDIA STREAM VARIANTS - A media feed is received and delineated into groups of pictures (GOPs) for processing into output media streams having different quality levels. The media feed needs only to be decoded once. The decoded stream is split along different paths based on resolution, and resized output media data is sent to multiple encoders and fragmenters to generate variants in bit rate and frame rate for each resolution. The generated variants may be maintained as fragments on shared storage. A particular stream corresponding to a particular variant can be reconstructed using the encoded fragments. | 2013-05-30 |
20130136191 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - An image processing apparatus and a control method are provided. The image processing apparatus includes a receiver which receives a transport stream from an image source; a buffer which stores the transport stream received by the receiver; a demultiplexer which converts the transport stream stored in the buffer into a video stream and transmits the video stream to a decoder; and a controller which controls the buffer to transmit packets of a transmission section of the transport stream to the demultiplexer when a system reference clock of the image processing apparatus corresponds to a stream reference clock calculated from the transport stream stored in the buffer, and controls the system reference clock to synchronize the system reference clock to the stream reference clock at a time at which the transmitted packets reach the demultiplexer. | 2013-05-30 |
20130136192 | VIDEO COMPRESSION ENCODER - A video compression encoder which does not require a video frame buffer is disclosed. Without a frame buffer, incoming pixels can not be compared to pixels previously sent to the decoder. Instead, the disclosed encoder only stores check values for groups of pixels sent. If a group's check value has not changed, the encoder sends a command to the decoder not to change that pixel group. Also, without a frame buffer, an incoming video frame can not be captured and later sent to the decoder as network throughput permits. Instead, if throughput is insufficient to send an encoded group of pixels, the encoder leaves the check value for that group unchanged and sends a command instructing the decoder not to change those pixels. This defers updating that group until the next screen update is sent to the decoder. Grouping of pixels can be done in any fashion, for example; a group can be a single video line, a portion of a line, multiple lines or screen rectangles containing portions of multiple lines. | 2013-05-30 |
20130136193 | APPARATUS AND METHOD OF TRANSMITTING/RECEIVING BROADCAST DATA - An encoding apparatus and a method of encoding a source block including different types of data payloads are provided. The method includes dividing the source block into a predetermined number M of sub blocks, generating a predetermined number P | 2013-05-30 |
20130136194 | AUDIOVISUAL CONTENT GENERATION METHOD FOR MULTISTAGE HIGH-SPEED REPRODUCTION - The present invention is to solve a problem that, at the time of high-speed reproduction using compressed video data, an audio distribution bandwidth increases simply in proportion to a high-speed reproduction rate. An encoding device includes: an audio encoding part configured to encode an audio signal; a video encoding part configured to encode a video signal; and a multiplexing part configured to multiplex audio data outputted by the audio encoding part and video data outputted by the video encoding part. The multiplexing part is configured to, at the time of high-speed reproduction, multiplex by locating audio data within a predetermined range into a picture configuring video data, the picture being distributed at a speed equal to or less than a predetermined reproduction speed but being not distributed at a speed more than the predetermined reproduction speed. | 2013-05-30 |
20130136195 | SYSTEM AND METHOD OF DATA COMMUNICATIONS BETWEEN ELECTRONIC DEVICES - A system and method of data communications between a first device and a second device is disclosed. The method includes generating a first clock signal at the first device and generating a second clock signal having a phase offset from the first clock signal. The clock signals are transmitted from the first device to the second device. The method further includes regulating transmission of a read strobe signal sent from the second device to the first device utilizing the first clock signal. The method also includes regulating transmission of a data transfer signal sent from the second device to the first device utilizing the second clock signal. | 2013-05-30 |
20130136196 | Wireless Communication Apparatus and Method - In relation to wireless communication, a communications apparatus suitable for installation into a vehicle provides a user-driven communication capability in a vehicle communications system. The apparatus includes means providing a wide-area communication capability, at least one antenna interface for conveying signals to and/or from at least one antenna providing wide-area communication, at least one power input configured to receive operating power for the apparatus from a vehicle and at least one digital communication interface for providing connectivity to a master unit of the vehicle. | 2013-05-30 |
20130136197 | METHOD FOR OPERATING AN AUTOMATION SYSTEM - A method for operating an automation system with a plurality of communication users linked for communication purposes via a serial connection, of which at least one functions as sender and at least one as a receiver, includes determining at a sender an offset value between an occurrence of a synchronous signal and a communication clock cycle, transmitting the determined offset value in a data transmission to the at least one receiver, waiting at the at least one receiver until a time period commensurate with the offset value has elapsed, and generating at the at least one receiver an output signal after the time period has elapsed. | 2013-05-30 |
20130136198 | SYSTEM AND METHOD FOR ADAPTIVE TIME SYNCHRONIZATION - A method of estimating a symbol boundary for adaptive time synchronization in a communication system is presented. An embodiment of the method includes receiving a signal comprising a plurality of OFDM symbols from receiver chains. The OFDM symbols include at least a long training field (LTF) symbol. The method further includes determining a normalized correlation signal based on correlation between the received LTF symbol and a reference symbol for each of the receiver chains for different lags. Also, the method includes estimating an energy window length for the normalized correlation signal. The energy window length includes at least one of channel delay spread and a maximum cyclic shift applied to the signal. The method then includes estimating the symbol boundary associated with the received LTF symbol based on a position of peak energy of the normalized correlation signal using the estimated energy window length. | 2013-05-30 |
20130136199 | CHANNEL ESTIMATION METHOD, APPARATUS AND SYSTEM - A channel estimation method, comprising when it is determined that in-band SRSs are required to be transmitted, acquiring the number of transmitting antenna ports and the number of layers of the currently transmitted DMRSs; calculating the difference of the number of the transmitting antenna ports and the number of layers of the currently transmitted DMRSs, and using the difference as the number of in-band SRSs that are required to be transmitted; transmitting in-band SRSs to a receiving-end device according to the number of in-band SRSs that are required to be transmitted, to enable the receiving-end device to perform channel estimation according to the currently transmitted DMRSs and the received in-band SRSs. | 2013-05-30 |
20130136200 | METHOD OF TRANSMITTING FEEDBACK INFORMATION IN A MIMO COMMUNICATION SYSTEM AND DEVICE THEREOF - The present invention provides a method of providing feedback information in a user equipment of a communication system based on MIMO, comprising: determining a first latest measured long-term covariance matrix according to a downlink channel matrix model; transmitting the quantization of a first latest estimated long-term covariance matrix corresponding to the first latest measured long-term covariance matrix to the base station; determining a second latest measured long-term covariance matrix according to a downlink channel matrix model; determining the variation information of a second latest estimated long-term covariance matrix with respect to an estimated long-term covariance matrix of the last-time reset point; and transmitting the quantization of the variation information to the base station. With such a solution, overhead during the feedback of long-term covariance matrix is greatly reduced in MIMO scenario. | 2013-05-30 |
20130136201 | METHOD AND APPARATUS FOR GENERATING A FEEDBACK CODEBOOK IN A NETWORK DEVICE - The invention provides a method of generating a 2M-antenna feedback codebook for l data streams in a network device, wherein l=1, . . . , 2M. The method includes the steps of: acquiring an M-antenna feedback codebook W | 2013-05-30 |
20130136202 | SYSTEMS AND METHODS FOR TRANSPORTING DIGITAL RF SIGNALS - A telecommunications system is provided that can re-sample a digitized signal at a resample rate that is based on one or more factors to better utilize bandwidth. The factors can include the bandwidth of the signal that the digitized signal represents, the amount of bandwidth owned or used by the carrier, the full bandwidth of the designated RF band, the bandwidth of the serial link, the frame length of the serial link, the segmentation of the frames on the serial link, and the capability of the equipment at the receiving end of a serial link. The re-sampled signal can be transmitted to another unit that is remote to the unit transmitting the signal. The other unit can include a re-sampling device that restores the re-sampled signal to a digital signal that can be converted to an analog signal for wireless transmission. | 2013-05-30 |
20130136203 | Method, Device and System for Configuring Codebook - The present invention discloses a method, device and system for configuring codebooks. The method comprises a transmitting end selecting a code word restricted sub-set and informing a receiving end of the code word restricted sub-set, the code word restricted sub-set containing part or all of code words in a first codebook and/or a second codebook; and the receiving end selecting an optimal pre-coded code word from the code word restricted sub-set and informing the transmitting end of an index of the optimal pre-coded code word. By the present invention, code word restriction is implemented in the case of dual codebooks in the LTE-A system such that the calculation complexity is reduced when the receiving end selects the code word, occurrences of the case where the receiving end selects the code word wrongly are decreased, and the signaling structure in the LTE system can be inherited very well. | 2013-05-30 |
20130136204 | TURBINE METER PRE-SCALING TERMINAL BLOCK ELECTRONICS - An electronic circuit for converting higher-frequency output signals from a sensor into lower-frequency input signals for a discrete input wireless transmitter. The circuit includes a differential amplifier, a digital comparator, a digital frequency divider, and a transistor switch. The differential amplifier amplifies the sensor signals as a function of a frequency of the sensor signals. The digital comparator generates a square wave signal by comparing the amplified sensor signals to a fixed reference voltage. The digital frequency divider generates a lower-frequency signal by dividing the square wave signal. The transistor switch generates the lower-frequency input signals for the discrete input wireless transmitter by switching as a function of the lower-frequency signal from the digital frequency divider. | 2013-05-30 |
20130136205 | Adaptive Two-Dimensional Channel Interpolation - A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency). | 2013-05-30 |
20130136206 | RADIO COMMUNICATION SYSTEM - A transmission apparatus in a radio communication system which simultaneously uses a plurality of different radio frequencies to transmit signals. The apparatus includes a radio format setting portion, which is provided for each transmission frequency of the plurality of different radio frequencies and separately sets a radio format of transmission signals for each transmission frequency; and a transmitter, which is provided for each transmission frequency of the plurality of different radio frequencies and transmits signals at each of said transmission frequencies. Each radio format setting portion sets a pilot length of the transmission signals separately for each transmission frequency of the plurality of different radio frequencies. | 2013-05-30 |
20130136207 | TRANSMITTER AND METHOD FOR TRANSMITTING DATA BLOCK IN WIRELESS COMMUNICATION SYSTEM - Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: encoding an information bit and generating a block coded with an NCBPSS bit; generating two sub-blocks by parsing the coded block; and transmitting the two sub-blocks to the transmitter. By preventing the bits that are contiguous to the encoding block from having continuous identical reliabilities on a signal constellation, the deterioration of the decoding performance of the transmitter can be prevented. | 2013-05-30 |
20130136208 | SIGNAL GENERATION METHOD AND SIGNAL GENERATION DEVICE - A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device. | 2013-05-30 |
20130136209 | Active General Purpose Hybrid - A general purpose hybrid includes a first input port in communication with a first dual vector generator, a second input port in communication with a second dual vector generator, a first active combiner receives a first signal from the first dual vector generator and a third signal from the second dual vector generator, where the first and second dual vector generators independently apply phase shifting and amplitude control to the first and third signals; a second active combiner receives a second signal from the first dual vector generator and a fourth signal from the second dual vector generator, where the first and second dual vector generators independently apply phase shifting and amplitude control to the second and fourth signals; a first output port provides a first composite signal from the first active combiner; and a second output port provides a second composite signal from the second active combiner. | 2013-05-30 |
20130136210 | Metric Corrections for Demodulators Using Serial Localization with Indecision - Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric is introduced for use in search of best candidate symbol estimates. The metric may be evaluated based on a probability distribution function of the residual signals or a probability mass function of the unresolved signals. The metric may also be approximated by the sum of a conventional Euclidean metric and a correction metric. The best candidate symbol estimates generated from each stage of the multi-stage SLI demodulator are summed to form cumulative symbol estimates. | 2013-05-30 |
20130136211 | RF Front-End for Intra-Band Carrier Aggregation - The method and apparatus described herein address problems associated with conventional wireless receivers configured for intra-band carrier aggregation. The disclosed solution applies the received signal to a single front-end amplifier, which may comprise a low-noise amplifier, and divides the amplified signal into two or more processing paths, where each path is associated with a different local oscillator frequency corresponding to a different reception band. To compensate for the impact of the additional processing paths on the amplifier performance, a negative resistor unit applies a negative resistance to the output of the front-end amplifier when two or more processing paths are active. | 2013-05-30 |
20130136212 | DIGITAL BROADCAST RECEIVER - The present invention provides a digital broadcast receiver which reduces the time needed for channel scans by performing efficient channel scanning when broadcasts in a plurality of broadcast protocols are received. As a first phase channel scan, a first controller and a second controller divide a plurality of channels included in an overlapping frequency band of a first broadcast protocol and a second broadcast protocol, and execute parallel channel scans. After the first phase channel scan, the first controller scans channels in which electrical signals generated from electromagnetic waves received by a second tuner in the first phase channel scan could not be demodulated by a second demodulator, and the second controller scans channels in which electrical signals generated from electromagnetic waves received by a first tuner could not be demodulated by a first demodulator. | 2013-05-30 |
20130136213 | RECEPTION SIGNAL PROCESSING DEVICE - A reception signal processing devices includes a converter which converts an analog signal amplified by an amplifying section to a digital signal, switches respectively provided in post-stages of variable gain amplifiers of the amplifying section, a bypass switch section which sets to open and close a path in which outputs of the variable gain amplifiers go around the variable gain amplifiers of the post-stages and are inputted to the converter, a switch controller which controls the switches and the bypass switch section and a DC offset controller which sets a correction value of a DC offset in accordance with a gain set to the variable gain amplifier as an object to be corrected. | 2013-05-30 |
20130136214 | SCALING DECISION DEVICE AND METHOD FOR DECIDING SCALING VALUE USED IN NORMALIZATION OF SIGNAL - According to one embodiment, a scaling decision device includes a first decision unit and a second decision unit. The first decision unit decides, based on a plurality of input signals, a K-th smallest signal of the plurality of input signals or a range to which the K-th smallest signal belongs of a plurality of ranges which classify the plurality of input signals by intensities. The second decision unit decides, based on a decision result of the first decision unit, a scaling value which prevents the K-th smallest signal from being submerged in quantization errors by normalization. | 2013-05-30 |
20130136215 | CHANNEL DECODING METHOD AND TAIL BITING CONVOLUTIONAL DECODER - The disclosure provides a channel decoding method and a tail biting convolutional decoder. The method comprises: the tail biting convolutional decoder performs add-compare-select processing on metric values of 2 | 2013-05-30 |
20130136216 | RECEPTION DEVICE - There are provided a correlation calculation unit that takes a cross-correlation between a signal from which a DC component of an analog baseband signal is removed, and to which a known fixed DC offset is added, and a known signal, an inter-correlation peak phase difference detection unit that estimates a carrier frequency offset from a peak of the calculated correlation vector, and a residual DC offset estimation unit that estimates a residual DC offset component from a mean value of the sidelobe of the calculated correlation vector. | 2013-05-30 |
20130136217 | LOW JITTER 2-STAGE INTERFACE RECEIVER FOR LOW POWER APPLICATION - Disclosed herein is an interface receiver including: an input terminal receiving first and second data signals; a negative feedback unit negatively feeding back the first and second data signals input to the input terminal to generate first and second feedback signals; and an output terminal outputting logic level signals by using the first and second feedback signals generated by the negative feedback unit, whereby a timing margin can be secured. | 2013-05-30 |
20130136218 | INFORMATION PROCESSING APPARATUS, METHOD, AND PROGRAM - The present invention relates to an information processing apparatus, a method, and a program capable of suppressing deterioration of content quality. An integrated reception buffer time adjustment unit 114 obtains a maximum transmission delay time that is the longest delay time among the transmission delays of data transmission performed by each reception unit 113. The reception buffer time setting unit 208 calculates a reception buffer time using the maximum transmission delay time, a transmission delay time of the data transmission by the reception unit 113, and a prescribed reception buffer time. The reception buffer time setting unit 208 sets various delay times and waiting times such as a variable compression encoding delay time, a redundant encoding block reception waiting time, an ARQ retransmission packet waiting time, and a network jitter handling buffer time from the reception buffer time. The present invention can be applied to an information processing apparatus, for example. | 2013-05-30 |
20130136219 | CLOCK FREQUENCY ERROR DETECTING DEVICE - A clock frequency error detecting device includes a system storage portion which stores a synchronization system based on at least one of several types of frame synchronization signals included in a received signal in which a frame synchronization signal in each frame includes a part obtained by shifting of a frame synchronization signal of another frame by a symbol by using a predetermined rule; a pattern matching portion which performs pattern matching between the received signal and the synchronization system; a symbol counter which outputs a symbol number; a timing detection portion which detects the frame synchronization signal of each frame based on a pattern matching processing result and to output the symbol number at the detection timing; and a frequency error detection portion which detects a change of the symbol number and to detect a clock frequency error of the symbol period based on the detection. | 2013-05-30 |