01st week of 2011 patent applcation highlights part 24 |
Patent application number | Title | Published |
20110002304 | ENHANCED DELAY MANAGEMENT - A method to facilitate user equipment (UE) handoff within a packet data communication system includes determining, at a source relay node, that the UE is to undergo a handoff from the source relay node to a target entity and sending, by the source relay node, a first request to a network node serving the UE. The sending is performed responsive to the determination that the UE is to undergo the handoff, such that the first request is configured to cause the network gateway node to store packet data addressed to the UE. Further operations include sending, by the target entity, a second request to the network, such that the second request is configured to cause the network to forward the stored packet data to the target entity, and receiving, at the target entity from the network, the stored packet data for wirelessly transmitting to the UE. | 2011-01-06 |
20110002305 | METHOD FOR PERFORMING INTER-RAT HANDOVER - An Inter-RAT handover method is disclosed. A method for supporting an Inter-RAT handover by an IEEE 802.16m MS includes performing, by the MS, pre-registration in an Inter-RAT target BS using a tunneling, if a channel quality of an Inter-RAT neighbor cell is higher than a pre-registration threshold, and transmitting a handover request message for a handover to the target BS to a serving BS, if a channel quality of the neighbor cell is equal to or higher than a handover threshold during a time duration in a scanning of the neighbor cell and a channel quality of the target BS is equal to or higher than that of the neighbor cell. This handover method reduces a time required for a handover from an IEEE 802.16m network to a Non-802.16m network, provides a seamless service, supports a rapid recovery in case of a radio link failure, and increases handover reliability. | 2011-01-06 |
20110002306 | A Bearer Establishing Method and System Based on Handover - The present invention discloses a bearer establishing method and system based on handover, wherein the method comprises: an MME transmits the handover required message to the target base station, and carries aggregate maximum bit rate information, namely AMBR information of the UE in the handover required message. In virtue of the above technical scheme, the AMBR information is transmitted to the target base station through the interface S | 2011-01-06 |
20110002307 | Controlling Node - A controlling node for a cellular communications system, arranged to handle the control of one or more user terminals in a first cell and configurable to receive transmissions from one or more user terminals in the first cell, with a defined periodicity. The controlling node includes a receipt monitor for one or more users in the cell, the receipt monitor being arranged to monitor timely receipt of the one or more of the certain transmissions from the one or more user terminals at the expected time for the defined periodicity, and to initiate handover of a user terminal from the first cell to another cell if the controlling node does not receive one or more of the certain transmissions at the expected time for the defined periodicity from the user terminal. | 2011-01-06 |
20110002308 | Wireless Communication Apparatus - In order to perform handover from a first wireless communication network | 2011-01-06 |
20110002309 | METHOD OF TRANSMITTING ACK/NACK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting an acknowledgement (ACK)/non-acknowledgement (NACK) signal in a wireless communication system is provided. The method includes: allocating a radio resource; and transmitting the ACK/NACK signal through an ACK channel in a location determined by an index for the radio resource, wherein the radio resource includes at least one resource unit which is a basic unit for resource allocation, the resource unit is at least one of a localized resource unit including subcarriers contiguous in a frequency domain and a distributed resource unit including subcarriers distributed in the frequency domain, an index of the localized resource unit is directly mapped to an index of the ACK channel, and an index of the distributed resource unit is mapped to an index of the ACK channel according to a permutation rule. | 2011-01-06 |
20110002310 | RADIO NETWORK CONTROLLER AND FRAME TRANSMISSION ADJUSTING METHOD - In adjusting transmission timings of frames sequentially transmitted from a radio network controller to a base transceiver station, the frame transmission schedule is changed in appropriate manner in response to a necessary Timing Adjustment control frame (TA). In a first period of time, which is a period of ignoring the received TA, the adjustment of the transmission timings of the frames is suspended. Also, out of the first period, the first period is varied in accordance with a variety of the delayed amount in transmission between the radio network controller and the base transceiver station. There is provided a period of ignoring a first control frame to be informed from the radio base transceiver station to the radio network controller. By setting the period to be a variable value, the synchronisation control is accomplished with certainty. | 2011-01-06 |
20110002311 | GATEWAY, BASE STATION AND METHOD FOR WINDOW-BASED CONTENT SYNCHRONIZATION - The present disclosure relates to a gateway, base station and method for window-based content synchronization technology. The gateway according the present invention comprises; a receiving unit for receiving a data packet; a window counting unit for counting the data packet, such that a predetermined number of packets forms a window, the number being a window size; a sequence number counting unit for generating a sequence number of the packet; a timestamp setting unit for setting a timestamp for the packet; and a processing unit for including the generated sequence number, the timestamp and a byte count in the packet to be transmitted. The base station according to the present invention comprises: a receiving unit for receiving a data packet; an information extracting unit for extracting a sequence number, a timestamp and byte count information from the data packet; a window counting unit for counting the received packets based on the extracted sequence number so as to form a window; and a processing unit for setting an anticipated air interface transmission time for the packets in the current window based on the extracted timestamp. The gateway or base station according to the present invention operates well with statistical multiplexing and has an improved overall performance in terms of synchronization processing delay and control packets load. | 2011-01-06 |
20110002312 | COMMUNICATION METHOD AND CELL STATION USING THE SAME - A radio controller, which prescribes repetition of a frame formed by a plurality of downlink time slots and a plurality of uplink time slots, and which allocates a first data to be broadcast and a second data to be transmitted to a personal station with switching to the downlink time slots corresponding to each other in each frame. Further, the radio controller allocates a third data, which should be received from the personal station, to the uplink time slot corresponding to the downlink time slot allocated to the first data and to the uplink time slot corresponding to the downlink time slot allocated to the second data. | 2011-01-06 |
20110002313 | METHOD AND SYSTEM FOR MESSAGING ACROSS CELLULAR NETWORKS AND A PUBLIC DATA NETWORK - A computer program product for instant message communication in a wireless and non-wireless environment. A message is sent from a mobile unit device over a wireless communication network. The message includes a destination address, information associated with the mobile unit device's user, message content and message address. If, according to information previously stored for the mobile unit device's user at the instant message system, the destination address is associated with an instant message function, the associated instant message function is executed at the instant message system using the information contained in the message content, if required as determined by the associated instant message function. If, according to information previously stored for the mobile unit device's user, the destination address is associated with an instant message name, an instant message is created according to the message content and is sent to the user with the associated instant message name. | 2011-01-06 |
20110002314 | METHODS AND APPARATUS FOR OPTIMIZATION OF FEMTOCELL NETWORK MANAGEMENT - Methods and apparatus that reduce network management overhead required for the operation of wireless femtocells. In one aspect of the invention, a central network entity governs the simultaneous operation of several femtocells by specifying modes of operation, and operational parameters for one or more of the femtocells. In one embodiment, at least one of the specified modes of operation directs a femtocell to operate in a substantially autonomous manner within the network-defined operational parameters. The network-defined constraints are provided to the femtocell for example, responsive to a successful registration attempt. | 2011-01-06 |
20110002315 | DIGITAL MULTIMEDIA LOCAL AREA WIRELESS TRANSMISSION SYSTEM AND LOCAL AREA WIRELESS TRANSMISSION METHOD USING THE SAME - A local area wireless transmission system includes: at least one transmitter transmitting a multimedia data signal with a first speed; at least one receiver receiving the multimedia data signal; and at least one master receiver transmitting a synchronization control signal with a second speed lower than the first speed, the at least one master receiver receiving the multimedia data signal from the at least one transmitter wirelessly and from the at least one receiver wiredly. | 2011-01-06 |
20110002316 | APPARATUS AND A METHOD FOR ENABLING A WLAN DEVICE TO ACCESS A WIMAX NETWORK - The present invention provides an apparatus for enabling a wireless local area network device to access a WiMAX network, the apparatus comprises: WiMAX means, configured to encapsulate uplink data from data means into a transmission message in an 802.16e protocol format, to send the transmission message to a WiMAX base station, to re-encapsulate a received message from the WiMAX base station into downlink data that can be processed by the data means and to send the downlink data to the data means; the data means, configured to receive the downlink data from the WiMAX means and the uplink data from WLAN means and to perform processing to the uplink data and the downlink data; and the WLAN means, configured to encapsulate the downlink data received from the data means into a downlink data message in an 802.11a/b/g protocol format, to send the downlink data message to a terminal device, and to re-encapsulate the uplink data message received from the terminal device into the uplink data that can be processed by the data means. The present invention also provides a method for enabling a wireless local area network device to access a WiMAX network. Therefore the facile movement in a local area is achieved. | 2011-01-06 |
20110002317 | METHOD AND DEVICE FOR MAPPING THE INITIAL LOCATION OF DOWNLINK PILOT - A mapping method for the initial location of the downlink pilot comprises the following steps: acquiring a cell sequence number; mapping the cell sequence number to k; and setting an initial location of a downlink pilot on a first antenna as the K | 2011-01-06 |
20110002318 | MOBILE STATION, BASE STATION, AND MOBILE COMMUNICATION METHOD - It is an objective of the present invention to efficiently use an uplink radio resource, when transmitting user data based on an uplink high efficient transmission method. A mobile station according to the present invention includes a transmission section configured to transmit high efficient uplink data channel frames for transmitting user data based on the uplink high efficient transmission method, so that transmission timings of the high efficient uplink data channel frames are synchronized among mobile stations located in a single area. | 2011-01-06 |
20110002319 | SIGNALING OF TRANSMISSION SETTINGS IN MULTI-USER SYSTEMS - The present invention relates to a transmitting apparatus, a receiving apparatus, a system, a signal, and a method of multi-user transmission, wherein transmission settings are divided into common signal information, containing settings/information relevant for multiple receivers and user stream specific information, containing settings/information relevant only to a related user stream. Furthermore, the common signal information may comprise at least one of a duration of the longest user stream field and multi-user resource allocation field, so that the receivers know the mapping of user streams to receivers. | 2011-01-06 |
20110002320 | METHOD OF TRANSMITTING INFORMATION FOR SUPPORTING LEGACY SYSTEM AND MULTI-CARRIER SYSTEM - A method for transmitting information that supports a legacy system and a multi-carrier system is disclosed. The method for transmitting information supporting a legacy system includes constructing a frame structure for supporting the legacy system, and transmitting a frame header including allocation information of the frame structure to a mobile station. | 2011-01-06 |
20110002321 | RADIO TRANSMISSION DEVICE, AND RADIO TRANSMISSION METHOD - Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit ( | 2011-01-06 |
20110002322 | DATA TRANSMISSION METHOD IN A MULTI-CARRIER SYSTEM, AND TRANSMITTER - A transmitter includes a plurality of transmit antennas, a processor configured to process user data, and a single carrier frequency division multiple access (SC-FDMA) signal generator configured to receive the user data and generate SC-FDMA symbols transmitted through the plurality of transmit antennas. The SC-FDMA signal generator independently performs inverse fast Fourier transform (IFFT) for each transmit antenna, and each of the plurality of transmit antennas is associated with each of a plurality of carriers. | 2011-01-06 |
20110002323 | DYNAMIC TIME INTERLEAVING METHOD AND AN ASSOCIATED DEVICE - The present invention relates to a time interleaving method ( | 2011-01-06 |
20110002324 | TIME SYNCHRONIZATION OF A PLURALITY OF DIFFERENT WIRELESS NETWORKS WITH DATA SENSORS - The invention relates to a method for time synchronization of a plurality of different wireless networks A, B, each wireless network (A, B) comprising at least one data sensor (A. | 2011-01-06 |
20110002325 | MULTIMEDIA TERMINAL DEVICE HAVING INTEGRATED TELEPHONE SYSTEM AND USER INTERFACE METHOD - Customer premise equipment provides a communication gateway with a network of a service provider and includes a multimedia terminal device for installation on the customer's premises typically at an out-of-the-way location. The multimedia terminal device includes a modem having an embedded media terminal adaptor and an integrated telephone base station, for instance, to provide both Internet connectivity and Voice-over-Internet-Protocol telephone service to the customer premises. A portable cordless telephone handset communicates via wireless communication signals with the telephone base station thereby providing telephone service to the premises. The handset is also capable of transmitting commands to the telephone base station for purposes of providing a user interface for the components of the multimedia terminal device. For example, as a result of a sent command, status or other information can be forwarded to the handset, the modem can be instructed to reboot, a test can be initiated on the multimedia terminal device, or a set up operation can be accomplished. The display screen of the handset can be used to provide the customer with the requested information or results. | 2011-01-06 |
20110002326 | Method for dialing from internet extension to conventional extension - A method for dialing from Internet extension to conventional extension is disclosed. A VoIP gateway or an IP auto attendants is used for dialing from Internet extension to conventional extension. The phone number of the Private Branch Exchange and the voice guidance are not needed. The calling number of SIP message is interpreted directly and converted into DTMF (Dual-tone multi-frequency) messages for dialing into a conventional extension. | 2011-01-06 |
20110002327 | VOICE SERVICE IN EVOLVED PACKET SYSTEM - Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example method in a user equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS) comprises receiving a Non Access Stratum (NAS) protocol response message with a second indicator and responsive to at least one of the first indicator or the second indicator, sending a notification that voice services are not currently able to be provided. | 2011-01-06 |
20110002328 | METHOD, SYSTEM, AND DEVICE FOR SETTING UP A CALL USING A GLOBAL REGISTRY - A method, system, and device for establishing a call using a single identifier, which includes receiving contact information relating to the single identifier from an uploading device, the contact information identifying at least one protocol, storing the contact information received from the uploading device, retrieving the stored contact information and transmitting a message including the contact information, in response to a request from a call server for the contact information relating to the single identifier, receiving a request from a first communication device to establish a call to a second communication device associated with the single identifier, requesting the contact information relating to the single identifier, receiving the contact information relating to the single identifier, and establishing a call between the first communication device and the second communication device associated with the single identifier using the at least one protocol. | 2011-01-06 |
20110002329 | METHOD, EQUIPMENT AND MOBILE COMMUNICATION SYSTEM FOR REALIZING EXPLICIT CALL TRANSFER - A method, equipment, and a mobile communication system for realizing explicit call transfer are provided. The method for realizing explicit call transfer includes the following steps. A service centralization & continuity application server (SCC AS) receives a call request sent by a second user equipment (UE), and sends the call request to a third UE, in which an instruction for replacing a call between a first UE and the third UE is carried in the call request. A message returned by the third UE according to the call request is received, and the third UE is controlled to establish a connection with the second UE and to break a connection with the first UE. The third UE is an IP multimedia subsystem centralized service user equipment (ICS UE). | 2011-01-06 |
20110002330 | SYSTEMS AND METHODS OF DECIDING HOW TO ROUTE CALLS OVER A VOICE OVER INTERNET PROTOCOL TELEPHONE CALL ROUTING SYSTEM - A system and method of monitoring Voice over the Internet Protocol (VoIP) and facsimile over Internet Protocol (FoIP) calling over the Internet includes compiling information about each call after the call is terminated. By compiling information about each of the calls immediately after they are terminated, the system can quickly generate billing reports. The system can also quickly react to developing problems. | 2011-01-06 |
20110002331 | PACKET RETRANSMISSION AND MEMORY SHARING - Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. | 2011-01-06 |
20110002332 | Method and Apparatus for a Software Programmable Intelligent Network - A reservation request is received for a data transport session. The reservation request contains a requested class of communication service through the asynchronous network. The state of the network along the route is then preferably determined and at least one end-to-end route through the network is obtained. The route is based on the requested class of communication service and the state of the network. The data transport session is then controlled, such that data is forced to travel along at least one route through the asynchronous network. This is preferably done by controlling multiple data controllers dispersed along the at least one route by mapping specific data protocols to specific routes, or mapping specific data protocols to specific ports in each data controller. If a state of the asynchronous network indicates that the route cannot transport data in conformity to the class of communication service, then the route is changed to a backup route through the network. | 2011-01-06 |
20110002333 | TERMINAL AND N-TREE CONSTRUCTING METHOD - A terminal apparatus is provided that minimizes traffic congestion by reducing end-to-end delay and maximizes the bandwidth available in shared N-tree ALM nodes. In this terminal apparatus, an optimal stream path information table ( | 2011-01-06 |
20110002334 | COMMUNICATION TERMINAL AND COMMUNICATION STATE CHANGE METHOD - A generating unit ( | 2011-01-06 |
20110002335 | Techniques for Introducing In-Band Network Management Packets in Multi-Protocol Label Switching Networks - A system and method for introducing in-band network management packets (INMPs) in a Multi-Protocol Label Switching (MPLS) network. MPLS is an emerging technology, which integrates Internet Protocol (IP) routing with label switching techniques. MPLS intends to provide new capabilities in the area of traffic engineering for IP networks. These traffic engineering capabilities will have to be combined with a set of complementary operation, administration and maintenance (OA&M) functions for effectively managing and operating MPLS-based networks. This invention uses INMPs for carrying OA&M information to label switching routers (LSRs) for effectively managing and operating MPLS-based networks. This invention also includes techniques for distinguishing INMPs from user packets in an MPLS network. This invention further includes using a predetermined code in a shim header of an MPLS packet to determine whether an MPLS packet is an INMP or a user packet. The predetermined code may be provided in an experimental field or a time-to-live field in the shim header of the packet. Alternatively, a label may be reserved for distinguishing an INMP from a user packet. | 2011-01-06 |
20110002336 | ADDRESS SEARCH METHOD AND PACKET PROCESSING DEVICE - A packet processing device includes a first search table in which an entry including an index value and a destination address is registered and a second search table in which a combination of header information and a destination address is registered. The packet processing device receives as an input a combination of header information and a destination to be registered and calculates an index value by one-way function calculation using the input header information. If the calculated index value is different from the existing entry in the first search table, the calculated index value and the input destination are registered as a new entry in the first search table. If the calculated index value is the same as the index value of the existing entry, a combination of the header information and the destination address represented by the existing entry is registered together with a combination of the inputted header information and the destination address in the second search table, and the destination address of the existing entry is deleted. By using the header information of a transfer packet, the packet processing device searches the first and the second search tables in parallel for the destination of the packet. | 2011-01-06 |
20110002337 | NETWORK RELAY APPARATUS - Network relay arrangements including: multiple ports; MAC address storage; flooding indication storage; plane number management storage; table manager; and frame processor. The table manager: utilizes the plane number management storage to specify current identification information being currently used and next identification information to be used next, with regard to a preset element of the key item for identifying a target of deletion of the information of correlating the transmit port to the MAC address from the MAC address storage; sets the requirement of the flooding operation in registry of a certain information group in the flooding indication storage having the preset element and being correlated to the current identification information; and sets the non-requirement of the flooding operation in registry of a certain information group in the flooding indication storage having the preset element and being correlated to the next identification information. | 2011-01-06 |
20110002338 | Sleep-Mode Control Information Processing Device, Storage Medium and Sleep-Mode Control Method - An information processing device, comprising: a traffic control unit configured to regularly check whether packets are transmitted to an adjacent node and received from the adjacent node; and a sleep determination process unit configured to determine whether there is a possibility that packets are transmitted to the adjacent node when no packet is transmitted to the adjacent node and received from to the adjacent node, and to transmit a sleep OK notice to the adjacent node indicating that the adjacent node shift to a sleep mode when the sleep determination process unit determines that there is a low probability that packets are transmitted to the adjacent node. | 2011-01-06 |
20110002339 | Network access control - The invention provides for telecommunications user equipment including network access control means operative responsive to control parameters and further including a subscriber module accessible remote from the user equipment and arranged to store the said control parameters for use by the said access control means, and wherein the subscriber module can comprise a mobile equipment offering gateway functionality such as between a public access network and a local IP link. | 2011-01-06 |
20110002340 | PIPELINE METHOD AND SYSTEM FOR SWITCHING PACKETS - A switching device comprising one or more processors coupled to a media access control (MAC) interface and a memory structure for switching packets rapidly between one or more source devices and one or more destination devices. Packets are pipelined through a series of first processing segments to perform a plurality of first sub-operations involving the initial processing of packets received from source devices to be buffered in the memory structure. Packets are pipelined through a series of second processing segments to perform a plurality of second sub-operations involved in retrieving packets from the memory structure and preparing packets for transmission. Packets are pipelined through a series of third processing segments to perform a plurality of third sub-operations involved in scheduling transmission of packets to the MAC interface for transmission to one or more destination devices. | 2011-01-06 |
20110002341 | METHOD AND APPARATUS FOR REMOTE ACCESS TO A LOCAL NETWORK - A method and apparatus for enabling remote access to a local gateway ( | 2011-01-06 |
20110002342 | NETWORK ACCESS METHOD, AUTHENTICATION METHOD, COMMUNICATIONS SYSTEMS AND RELEVANT DEVICES - A network access method, an authentication method, a communications system, and relevant devices are provided to support implicit authentication based on subscriber line information in Internet Protocol version 6 (IPv6). The network access method includes: receiving a first request message sent from a User Equipment (UE) on an Access Node (AN), where the first request message carries a Link-Local Address (LLA); obtaining subscriber line information corresponding to the UE; and sending a second request message from the AN to a Broadband Network Gateway (BNG), where the second request message carries the LLA and the subscriber line information and instructs the BNG to perform access authentication. An authentication method, a communications system and relevant devices are also disclosed. | 2011-01-06 |
20110002343 | METHOD FOR DATA SYNCHRONIZATION WITH MOBILE WIRELESS DEVICES - A system and method for utilizing non-interactive communications with wireless networks for a mobile wireless device such as a telephone, personal digital assistant (PDA), laptop, or other mobile device configured for performing data transfers over a wireless network. By way of example, the invention allows a user to send and receive email as well as web updates and other data updates in physical areas and locations of limited signal coverage exists without the user periodically activating the device for updating data. The invention preferably comprises programming configured for awakening the processor in response to time thresholds or the detection of sufficient signal levels from available wireless networks and wireless network devices. The programming establishes a connection with appropriate wireless network devices and communicates selected data, for example data selected by the user, such as emails (to be sent/received), web sites to be refreshed, and other forms of non-interactive data. | 2011-01-06 |
20110002344 | BUFFER CONTROL FOR MULTI-TRANSPORT ARCHITECTURES - A system for automating connection management in a manner that may be transparent to any actively communicating applications operating in a Network on Terminal Architecture (NoTA). An application level entity may access another node by making a request to a high level communication structure via an interface. The high level structure may interact with a lower level structure configured to manage communication by establishing communication with another device via one or more transports. In at least one embodiment, provisions may be made to guard against data being lost when a transport fails, including storing data that is passed from a transport-independent buffer to a transport-specific buffer in case the transport fails. When a failure occurs, the stored data may readily be forwarded for sending using another transport. | 2011-01-06 |
20110002345 | METHOD AND APPARATUS FOR DEQUEUING DATA - A method and apparatus for dequeuing data are disclosed. The method includes: obtaining storage addresses of packets in each queue, and dequeuing, by multiple dequeue processing engines, the packets in each queue in parallel according to the storage addresses of the packets in each queue. Multiple dequeue processing engines dequeue the packets in multiple queues in parallel, and thus the data dequeue efficiency and performance are improved. | 2011-01-06 |
20110002346 | Extended Network Protocols for Communicating Metadata with Virtual Machines - Network devices include hosted virtual machines and virtual machine applications. Hosted virtual machines and their applications implement additional functions and services in network devices. Network devices include data taps for directing network traffic to hosted virtual machines and allowing hosted virtual machines to inject network traffic. Network devices include unidirectional data flow specifications, referred to as hyperswitches. Each hyperswitch is associated with a hosted virtual machine and receives network traffic received by the network device from a single direction. Each hyperswitch processes network traffic according to rules and rule criteria. A hosted virtual machine can be associated with multiple hyperswitches, thereby independently specifying the data flow of network traffic to and from the hosted virtual machine from multiple networks. The network device architecture also enables the communication of additional information between the network device and one or more virtual machine applications using an extended non-standard network protocol. | 2011-01-06 |
20110002347 | METHOD AND SYSTEM FOR ENCODING AND DECODING MEDIUM ACCESS CONTROL LAYER PACKET - A method and system for encoding and decoding Medium Access Control (MAC) Protocol Data Units (PDUs) in a MAC layer packet is provided. The method includes receiving a request from a Physical (PHY) layer to transmit the MAC layer packet, wherein the MAC layer packet is transmitted in a predefined number of bytes that is determined in the PHY layer, and filling unfilled portion in the MAC layer packet with at least one fixed pattern in a predefined pattern set when a number of bytes that are unfilled is equal to or greater than 1. The unfilled portion includes total number of bytes that are unfilled in the MAC layer packet. Thereafter, the unfilled portion of the MAC layer packet is filled with a predefined pattern set when the number of predefined bytes is greater than the cumulative size of the available MAC PDUs arranged in the MAC layer packet. | 2011-01-06 |
20110002348 | ADJUSTABLE PULSEWIDTH PICOSECOND FIBER LASER - A pulsed fiber laser generating light pulses in the picosecond range has an adjustable pulsewidth. The fiber laser includes a figure-of-eight type laser cavity, preferably of polarization-maintaining optical fiber, defining reciprocal and non-reciprocal loops. A gain medium is disposed asymmetrically in the reciprocal loop, at a position therealong favoring coupling of light in the propagation direction of the non-reciprocal loop. A pump source is coupled to the reciprocal loop to inject pump light into the gain medium. The laser cavity is designed so that changing the pump power will directly affect the pulsewidth of the generated light pulses, providing a useful control mechanism of the pulsewidth. | 2011-01-06 |
20110002349 | WAVELENGTH-TUNABLE LASER APPARATUS AND WAVELENGTH CHANGING METHOD THEREOF - An object is to provide a wavelength-tunable laser apparatus that prevents a grid-hopping upon wavelength change, and a wavelength changing method thereof. A wavelength-tunable laser apparatus | 2011-01-06 |
20110002350 | METHOD OF CONTROLLING A DIODE DEVICE FOR USE IN OPTICAL STORAGE SYSTEMS - A system and method is provided which compensates for the effects of relaxation oscillations and turn-on delays of diode laser devices. In particular, there is provided a method and system for tuning the shape of the power profile of an output optical signal and its position with respect to a channel bit clock of an optical recording system. | 2011-01-06 |
20110002351 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes: a p-type cladding layer; a p-type cladding layer guide layer; an active layer; an n-type cladding layer guide layer; and an n-type cladding layer, in which each of the p-type and n-type cladding layer guide layers is undoped or close to undoped, the sum of the thickness of the p-type cladding layer guide layer and the thickness of the n-type cladding layer guide layer is at least 200 nm, and both of (i) the difference between the band gap energy of the p-type cladding layer guide layer and the band gap energy of the active layer, and (ii) the difference between the band gap energy of the n-type cladding layer guide layer and the band gap energy of the active layer do not exceed 0.3 eV. | 2011-01-06 |
20110002352 | OPTICAL WAVEGUIDE INTEGRATED SEMICONDUCTOR OPTICAL DEVICE AND MANUFACTURING METHOD THEREFOR - An optical waveguide integrated semiconductor optical device includes a laser and an optical waveguide. The laser includes an active layer and a first cladding layer which are stacked on a second cladding layer. The optical waveguide includes an optical guiding layer and an undoped InP layer which are also stacked on the second cladding layer. A high resistance layer is located between the top surface of the optical guiding layer and a surface of the undoped InP layer and between a side of the first cladding layer and a side of the undoped InP layer. | 2011-01-06 |
20110002353 | SURFACE EMITTING LASER, SURFACE EMITTING LASER ARRAY, AND IMAGE FORMATION APPARATUS - To provide a surface emitting laser having a structure that can suppress the oscillation of a high-order transverse mode. In the surface emitting laser, a plurality of semiconductor layers including a lower DBR, an upper DBR, an active layer interposed therebetween, and a current confinement layer for confining a current injected to the active layer are stacked on a substrate, and a barrier structure limits the migration of a majority carrier, that has passed through a current unconfining portion, in an electric field application direction; the barrier structure is provided between the current confinement layer and the active layer so that an oscillation of a high-order transverse mode is suppressed by the barrier structure promoting the diffusion of the majority carrier in an in-plane direction of the barrier structure. | 2011-01-06 |
20110002354 | SEMICONDUCTOR LASER DEVICE - The present invention provides a semiconductor laser device including: a plurality of light emitting sections arranged in strip shapes in parallel; a plurality of first electrodes arranged along top faces of the light emitting sections, respectively; an insulating film covering a whole surface of the plurality of first electrodes, and including contact apertures corresponding to the first electrodes, respectively; a plurality of second electrodes arranged in positions different from those of the plurality of light emitting sections, correspondingly to the first electrodes; a plurality of wiring layers arranged on the insulating layer, and electrically connecting the second electrodes and the corresponding first electrodes through the contact apertures, respectively; and a plurality of window regions arranged for the light emitting sections in the insulating film so as to expose the first electrodes, respectively, and including at least two window regions having areas different from each other. | 2011-01-06 |
20110002355 | ELECTRICALLY-PUMPED SEMICONDUCTOR ZIGZAG EXTENDED CAVITY SURFACE EMITTING LASERS AND SUPERLUMINESCENT LEDS - A semiconductor surface emitting optical amplifier chip utilizes a zigzag optical path within an optical amplifier chip. The zigzag optical path couples two or more gain elements. Each individual gain element has a circular aperture and includes a gain region and at least one distributed Bragg reflector. In one implementation the optical amplifier chip includes at least two gain elements that are spaced apart and have a fill factor no greater than 0.5. As a result the total optical gain may be increased. The optical amplifier chip may be operated as a superluminescent LED. Alternately, the optical amplifier chip may be used with external optical elements to form an extended cavity laser. Individual gain elements may be operated in a reverse biased mode to support gain-switching or mode-locking. | 2011-01-06 |
20110002356 | Method and Apparatus for Monitoring Materials - A method and apparatus for monitoring during dynamic processes that determines when effective measurements of thermal effusivity and/or thermal conductivity can be made during a portion of a cycle during a calibration phase, then measures thermal effusivity and/or thermal conductivity during a subsequent dynamic process in dependence upon the time delay value and the measurement duration value until a desired value is obtained. A sensor having a measurement period of between one of two seconds allows monitoring of materials during dynamic processes such as tumbling, blending, mixing, and rocking. For example, measurements can be made until a value indicative of a desired mixture condition is obtained. | 2011-01-06 |
20110002357 | SCREENING INSTALLATION - A screening installation is provided that detects a fire in a greenhouse. The screening installation has at least one screening fabric with an upper side and a rear side, and a first set of polymeric or metallic wires arranged proximate to the upper side of the at least one screening fabric so that a displacement of the fabric is restricted by the first set of polymeric or metallic wires. In addition, at least on of the polymeric or metallic wires in the first set of polymeric or metallic wires is replaced by a linear heat detection wire and/or the first set of polymeric or metallic wires is supplemented with at least one linear heat detection wire. | 2011-01-06 |
20110002358 | Temperature Detection and Reporting System and Method in Power Driving and/or Consuming System - An apparatus, in one embodiment, can include a configuration including a plurality of heat generation devices. The apparatus also includes a plurality of thermal sensors respectively, operably connected to each of the plurality of heat generation devices, wherein each thermal sensor of the plurality of thermal sensors includes a respective output terminal configured to provide a voltage representative of the temperature of the respective heat generation device. The apparatus further includes an output circuit configured to output the highest temperature information among the heat generation devices. The output terminals of the plurality of thermal sensors are tied together. A corresponding method is also discussed. | 2011-01-06 |
20110002359 | SENSOR AND METHOD FOR PRODUCING THE SAME - A sensor, in particular for the spatially resolved detection, includes a substrate, at least one micropatterned sensor element having an electric characteristic whose value varies as a function of the temperature, and at least one diaphragm above a cavity, the sensor element being disposed on the underside of the at least one diaphragm, and the sensor element being contacted via connecting lines, which extend within, on top of or underneath the diaphragm. In particular, a plurality of sensor elements may be formed as diode pixels within a monocrystalline layer formed by epitaxy. Suspension springs, which accommodate the individual sensor elements in elastic and insulating fashion, may be formed within the diaphragm. | 2011-01-06 |
20110002360 | PERMISSION-BASED SECURE MULTIPLE ACCESS COMMUNICATION SYSTEMS | 2011-01-06 |
20110002361 | Signal transmission system for a measurement device - A transmission system for a measurement device on a coordinate positioning apparatus comprises a station mounted on the measuring device and another station mounted on the coordinate positioning apparatus, wherein the station and the another station communicate with each other using a spread spectrum radio link, for example, frequency hopping. The station on the probe sends a regular signal and on receiving the signal the another station on the coordinate positioning apparatus synchronises its clock and sends an acknowledgement signal. Measurement data is either sent in the regular signal or in a measurement event driven signal. | 2011-01-06 |
20110002362 | SYMBOL ESTIMATION FOR CHAOTIC SPREAD SPECTRUM SIGNAL - A communications system includes RF hardware ( | 2011-01-06 |
20110002363 | Method and Apparatus for Generating Scrambling Codes - Wireless transmission techniques are described, including techniques used to generate scrambling codes for use in wireless transmissions, such as spread spectrum transmissions. In some embodiments, scrambling codes may be iteratively generated using multiplicative factors. The multiplicative factors may be predetermined and stored in advance, reducing processing time when the codes are needed. The multiplicative factor iterations may involve predetermined algorithms, such as squaring and powers of two iterations. | 2011-01-06 |
20110002364 | ANTI-JAM COMMUNICATIONS HAVING SELECTIVELY VARIABLE PEAK-TO-AVERAGE POWER RATIO INCLUDING A CHAOTIC CONSTANT AMPLITUDE ZERO AUTOCORRELATION WAVEFORM - A spread spectrum communication system includes a channel encoder configured for modulating a carrier signal with data to form an information signal. A spreading sequence generator is configured for generating a spreading sequence having a phase angle dependent upon a chaotic sequence and contiguously distributed over a predetermined range. The chaotic sequence also has a magnitude which is selectively dependent upon the pseudo-random number or chaotic sequence. The invention also includes a multiplier configured for forming a spread spectrum signal by multiplying the information signal by the spreading sequence. The spreading sequence generator is responsive to a magnitude control signal for controlling the selective dependency of said magnitude. The magnitude can be constant to form a constant amplitude zero autocorrelation signal. Alternatively, the magnitude can be allowed to vary in selectively controlled chaotic or pseudo-random manner to vary a peak to average power ratio. | 2011-01-06 |
20110002365 | INTERFERENCE CANCELLATION IN A MULTI-USER RECEIVER - The delay associated with performing interference cancellation in a multi-user receiver is reduced by enabling partial decoding. According to an embodiment, interference is canceled from a received signal having signal contributions from multiple users by partially decoding a first codeword obtained from the received signal and transmitted by a first user via a first signal. The first signal is reconstructed based on the partial decoding of the first codeword and canceled from the received signal to yield a reduced-interference signal. A second codeword obtained from the reduced-interference signal and transmitted by the first user or a second user via a second signal is at least partially decoded. In one embodiment, the first codeword is partially decoded by puncturing one or more coded bits of the first codeword and decoding the first codeword based on the one or more punctured coded bits and estimates of the remaining coded bits. | 2011-01-06 |
20110002366 | RAKE RECEIVER FOR SPREAD SPECTRUM CHAOTIC COMMUNICATIONS SYSTEMS - A receiver ( | 2011-01-06 |
20110002367 | DIGITAL REPEATER HAVING BANDPASS FILTERING, ADAPTIVE PRE-EQUALIZATION AND SUPPRESSION OF NATURAL OSCILLATION - Repeaters, event those having digital processing, exist. The significant drawback of these digital repeaters is that the computational complexity or the processing speed has to be very high in order to guarantee, particularly when compensating for echo, that the necessary delay does not excessively impair the performance. The aim of the invention is to provide a structure of the repeater in which the computational complexity is reduced without this reduction having a negative effect on the performance during signal filtering and/or suppression of natural oscillation. To this end, the invention provides that in order to carry out bandpass filtering, adaptive pre-equalization and suppression of the natural oscillation, the components of the repeater in the uplink branch and downlink branch are arranged in a designated sequence, whereby duplex filters are used for coupling both repeater branches to the antennas. In addition, only one reconfiguration in the modules at the user is necessary in order to adapt to user-specific requirements. The invention is used in the field of digital repeaters for data systems technology and telecommunications technology. | 2011-01-06 |
20110002368 | HIGH SPEED SERIAL LINK SYSTEMS - High speed serial link techniques are provided. A system applying the high speed serial link technique comprises a relay unit and an amplifier. The relay unit receives a first pair of differential signals provided by a high speed transmitter of a first device, and provides the amplifier with at least one signal that is generated based on the first pair of differential signals. The amplifier amplifies and converts the signal provided by the relay unit to a second pair of differential signals to be received by a high speed receiver of a second device. | 2011-01-06 |
20110002369 | IP TO ANALOG CONVERTER - A device includes an analog front end, a converter processor, and a network port. The analog front end includes a first modem configured to couple to a first line of a modem bank and includes a second modem configured to couple to a second line of the modem bank. The modem bank is configured to couple to a host processor. The first modem is operable independent of the second modem. The converter processor is coupled to the analog front end. The network port is coupled to the converter processor and configured to communicate with a network. The converter processor is configured to execute instructions to exchange data between the network and the modem bank. | 2011-01-06 |
20110002370 | SAMPLING POINT DETECTION CIRCUIT, TRANSMISSION SYSTEM, PRE-EMPHASIS INTENSITY ADJUSTMENT METHOD, LOGIC ANALYZER, AND EVALUATION METHOD FOR EVALUATING TRANSMISSION PATH - A sampling point detection circuit | 2011-01-06 |
20110002371 | System and method for adjusting DIDO interference cancellation based on signal strength measurements - A machine-implemented system and method are described for removing interference between adjacent distributed-input-distributed-output (DIDO) clusters comprising. For example, a method according to one embodiment comprises: detecting signal strength at a first client from a main DIDO cluster; detecting interference signal strength at the first client from an interfering DIDO cluster; if the signal strength from the main DIDO cluster reaches a specified value relative to the value of the interference signal strength from the interfering DIDO cluster, then generating channel state information (CSI) defining channel state between one or more antennas of the first client and one or more antennas of the interfering DIDO cluster; transmitting the CSI from the first client to a base transceiver station (BTS) in the interfering DIDO cluster; and implementing DIDO precoding with inter-DIDO-cluster interference (IDCI) cancellation at the BTS in the interfering DIDO cluster to avoid RF interference at the first client. | 2011-01-06 |
20110002372 | DOWNLINK CHANNEL PARAMETERS DETERMINATION FOR A MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) SYSTEM - Embodiments of methods and apparatus for providing downlink channel parameters determination for downlink channels associated with a multiple-input-multiple-output (MIMO) system are generally described herein. Other embodiments may be described and claimed. | 2011-01-06 |
20110002373 | APPARATUS FOR PERFORMING BEAM TRACKING PROCESS AND METHOD THEREOF - A method for performing beam tracking in a wireless communication network is provided. In the method, a transmitter station emits beam patterns including respective beam pattern indices to receiver stations and receives a feedback index indicating one of the beam patterns from each receiver station during a predetermined channel time after the emission of beam patterns is completed. A beam pattern feedback is processed using a simple code, thereby minimizing the amount of information and hardware required for beam search and tracking. In addition, in uni-directional beam tracking, it is possible to perform tracking on a number of beam links at once and a sub-channel that can be used for beam tracking and search is allocated to each station to allow a number of stations to simultaneously perform beam search, thereby reducing the amount of used channel time. | 2011-01-06 |
20110002374 | RECEIVER CIRCUIT, METHOD OF ADJUSTING OFFSET, AND TRANSMISSION/RECEPTION SYSTEM - A receiver circuit includes: an equalization circuit that equalizes a first signal to obtain a second signal, and adjusts a characteristic of an equalization in accordance with an error between the second signal and a third signal; and a first offset adjustment circuit that adjusts an offset of the first signal in accordance with an error signal indicating the error. | 2011-01-06 |
20110002375 | Information reproducing apparatus using adaptive equalizer and adaptive equalization method - An adaptive equalizer includes: an equalizer configured to equalize a digital RF signal based on a plurality of tap coefficients; and a tap coefficient controller configured to correct the plurality of tap coefficients in a time division. The tap coefficient controller includes a tap coefficient register configured to hold the plurality of tap coefficients; and a product-sum calculating circuit configured to correct at least one selected from the plurality of tap coefficients in response to an enable signal, by a predetermined product-sum calculation, and update the selected tap coefficient by the corrected tap coefficient. | 2011-01-06 |
20110002376 | Latency Minimization Via Pipelining of Processing Blocks - Novel tools and techniques for minimizing the latency of video processing blocks via pipelining. Video calling is a latency sensitive application. When the latency between capture at the video source and display at the video sink is too large, the call does not appear interactive. Transmission of video over a network exacerbates the problem. It is highly desirable to minimize the capture/encode/transmit latency at the video source and the receive/decode/display latency at the video sink. Certain tools disclosed herein minimize these latencies via pipelining of processing blocks. For example, in some tools, each block begins processing before the previous block has finished its processing. | 2011-01-06 |
20110002377 | TRANSMITTER QUIETING AND NULL DATA ENCODING - In one example, a method comprises encoding a set of frames of multimedia data, encoding null data for a period following the set of frames of multimedia data, modulating the encoded set of frames and the null data, wherein modulating the null data creates a null interval over the period, transmitting the encoded set of frames via a transmitter, and blanking the transmitter during the null interval. | 2011-01-06 |
20110002378 | CODING LATENCY REDUCTIONS DURING TRANSMITTER QUIETING - In one example, a method comprises encoding and modulating a first set of frames such that a latency associated with demodulating and decoding the first set of frames is less than a first time interval, encoding and modulating a second set of frames such that a required latency associated with demodulating and decoding the first set of frames is less than a second time interval, transmitting the first set of frames and the second set of frames via a transmitter, and blanking the transmitter during a null interval associated with transmitting the second set of frames, wherein the null interval and the second time interval are less than or equal to the first time interval. | 2011-01-06 |
20110002379 | TRANSMITTER QUIETING AND DIFFERENT ENCODING RATES FOR PORTIONS OF A SET OF FRAMES - In one example, a method comprises defining a period of time for encoding a set of frames of multimedia data, encoding a first portion of the set of frames of multimedia data at a first encoding rate, encoding a second portion of the set of frames of multimedia data at a second encoding rate, wherein the second encoding rate is less than the first encoding rate so as to create a null interval during the period of time, transmitting the encoded set of frames via a transmitter, and blanking the transmitter during the null interval. | 2011-01-06 |
20110002380 | Method and apparatus for predictive frame selection supporting enhanced efficiency and subjective quality - A method and apparatus are provided for predictive frame selection supporting enhanced efficiency and subjective quality. The apparatus includes an encoder for encoding a picture using a selection scheme that selects between encoding the picture as a single direction inter predictive picture type and a bi-directional inter predictive picture type based on coding efficiency and a determination of a flickering artifact resulting from coding the picture as the bi-directional inter predictive picture type. | 2011-01-06 |
20110002381 | BITRATE CONTROL ALGORITHM FOR VIDEO TRANSCODING SYSTEMS - A video transcoding system and method employing an improved rate control algorithm. A plurality of frames in an input video bitstream are received by the system, in which each frame is in a first coding format. Each frame in the input bitstream is decoded, and complexity information indicating the complexity of the frame after decoding is obtained. An estimated number of bits to allocate for the respective frame is calculated. Using a rate estimation model that employs the complexity information for the respective frame, a picture cost for the frame is calculated based on the estimated number of bits allocated to encode the frame, and a parameter of the rate estimation model. A target cost for the respective frame is calculated based at least in part on the picture cost 10 and the complexity information for the frame. A quantization parameter (QP) is calculated that, when used to encode the respective frame in a second coding format, would generate an encoded frame having an actual cost approximately equal to the target cost. The respective frame is encoded using the calculated QP, and the frames encoded in the second coding format are provided in an output video bitstream. | 2011-01-06 |
20110002382 | MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE ENCODING METHOD, AND VIDEO DEVICE - According to one embodiment, a moving image/picture encoding apparatus of an embodiment comprises an encoded information acquisition module, an encoding complexity calculation module, an encoding complexity conversion module, and a transcode module. The encoded information acquisition module reads MPEG header information from the input stream to acquire information on a quantization scale, generated bits and a picture type for each frame. The encoding complexity calculation module uses the acquired information to calculate, for each of the frames, encoding complexity represented in a form of the product of the quantization scale and the generated bits. The encoding complexity conversion module uses a linear function prepared for each of the picture types to convert the calculated encoding complexity into encoding complexity of H. 264/AVC. The transcode module uses the converted encoding complexity of H. 264/AVC to transcode the input stream into the output stream. | 2011-01-06 |
20110002383 | MOVING IMAGE CODING/DECODING SYSTEM AND MOVING IMAGE CODING APPARATUS AND MOVING IMAGE DECODING APPARATUS USED THEREIN - An image quality/rate control portion | 2011-01-06 |
20110002384 | VIDEO ENHANCEMENT USING RECURSIVE BANDLETS - A wavelet transform is applied to successive images of a video sequence to obtain wavelet coefficients for each image, and directions of regularity are estimated in association with the wavelet coefficients. Recursive weights are also determined to be associated with the wavelet coefficients. An average multiscale bandlet coefficient associated with a wavelet coefficient for a current image is computed from this wavelet coefficient, the recursive weight associated therewith and a corresponding average multiscale bandlet coefficient computed for a previous image and associated with a wavelet coefficient offset according to the direction of regularity associated with the wavelet coefficient. The average multiscale bandlet coefficients can then be processed to produce an enhanced bandlet image to which an inverse wavelet transform is applied. The determination of a recursive weight associated with a wavelet coefficient for the current image comprises checking a condition between this wavelet coefficient and the corresponding average multiscale bandlet coefficient computed for the previous image, and updating a value of the recursive weight depending on the condition. | 2011-01-06 |
20110002385 | IMAGE CODING APPARATUS, CONTROL METHOD THEREFOR AND COMPUTER PROGRAM - An image coding apparatus which divides an input picture into a plurality of macroblocks and performs a prediction encoding for each macroblock, comprising a unit for calculating flatness based on pixel values contained in a macroblock of interest and determining whether the macroblock of interest is a flat macroblock, a unit for storing determination results for each macroblock, a unit for determining, based on the determination results, whether the macroblock of interest determined to be a flat macroblock belongs to a flat area, a unit for selecting one of the inter-prediction mode and the intra-prediction mode as a prediction mode for an encoding process of the macroblock of interest based on determination results and on cost values of the inter-prediction mode and the intra-prediction mode, and a unit for performing predictive coding according to the selected prediction mode. | 2011-01-06 |
20110002386 | VIDEO ENCODER AND METHOD FOR PERFORMING INTRA-PREDICTION AND VIDEO DATA COMPRESSION - The invention provides a method for performing intra-prediction. A target pixel is selected from a plurality of pixels of a current block. A first intra-prediction mode of a left block, a second intra-prediction mode of an up block, and a third intra-prediction mode of the current block are then determined. A first prediction value of the target pixel is calculated according to the first intra-prediction mode. A second prediction value of the target pixel is calculated according to the second intra-prediction mode. A third prediction value of the target pixel is calculated according to the third intra-prediction mode. The first prediction value, the second prediction value, and the third prediction value are then averaged to obtain a weighted-average prediction value as an intra-prediction value of the target pixel. | 2011-01-06 |
20110002387 | Techniques for motion estimation - Techniques are described that can be used to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. A metric an be used determining a metric for each pair of MV | 2011-01-06 |
20110002388 | TEMPLATE MATCHING FOR VIDEO CODING - In one aspect of this disclosure, template matching motion prediction is applied to B-frames. In another aspect of this disclosure, template matching motion prediction as applied to video block coding may include generating a template offset, generating a weighted sum of absolute differences, selecting a number of hypotheses used to encode video blocks based on the cost associated with the number of hypotheses and signaling, with a new syntax, to a decoder, the number of hypotheses used in encoding, rejecting hypotheses if the difference in value between a hypothesis and a reference hypothesis is greater than a threshold value, and/or generating the content of a sub-block that does not have reconstructed data available by combining motion-compensated prediction and luma residuals. | 2011-01-06 |
20110002389 | METHODS AND SYSTEMS TO ESTIMATE MOTION BASED ON RECONSTRUCTED REFERENCE FRAMES AT A VIDEO DECODER - Methods and systems to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. The ME process can be performed on sub-partitions of the input block, which may reduce the prediction error without increasing the amount of MV information in the bitstream. Decoder-side ME can be applied for the prediction of existing inter frame coding modes, and traditional ME or the decoder-side ME can be adaptively selected to predict a coding mode based on a rate distribution optimization (RDO) criterion. | 2011-01-06 |
20110002390 | METHODS AND SYSTEMS FOR MOTION VECTOR DERIVATION AT A VIDEO DECODER - Method and apparatus for deriving a motion vector at a video decoder. A block-based motion vector may be produced at the video decoder by utilizing motion estimation among available pixels relative to blocks in one or more reference frames. The available pixels could be, for example, spatially neighboring blocks in the sequential scan coding order of a current frame, blocks in a previously decoded frame, or blocks in a downsampled frame in a lower pyramid when layered coding has been used. | 2011-01-06 |
20110002391 | DIGITAL IMAGE COMPRESSION BY RESOLUTION-ADAPTIVE MACROBLOCK CODING - Disclosed is an image encoder that divides a digital image into a set of “macroblocks.” If appropriate, a macroblock is “downsampled” to a lower resolution. The lower-resolution macroblock is then encoded by applying spatial (and possibly temporal) prediction. The “residual” of the macroblock is calculated as the difference between the predicted and actual contents of the macroblock. The low-resolution residual is then either transmitted to an image decoder or stored for later use. In some embodiments, the encoder calculates the rate-distortion costs of encoding the original-resolution macroblock and the lower-resolution macroblock and then only encodes the lower-resolution macroblock if its cost is lower. When a decoder receives a lower-resolution residual, it recovers the lower-resolution macroblock using standard prediction techniques. Then, the macroblock is “upsampled” to its original resolution by interpolating the values left out by the encoder. The macroblocks are then joined to form the original digital image. | 2011-01-06 |
20110002392 | METHOD AND APPARATUS FOR MULTI-VIEW VIDEO ENCODING AND METHOD AND APPARATUS FOR MULTIVIEW VIDEO DECODING - Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting from a received bitstream a block type indicating a method of determining a motion vector of a current block present in a current picture of the multi-view video; interpreting a first picture type indicating whether the current picture is a reference picture type for inter prediction; interpreting additional information of the current picture based on at least one of the interpreted first picture type and the interpreted block type; and reconstructing the current block and the current picture by using the additional information. | 2011-01-06 |
20110002393 | AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND VIDEO TRANSMISSION DEVICE - An audio encoding device includes, a time-frequency transform unit that transforms signals of channels included in an audio signal having a first number of channels into frequency signals respectively, a down-mix unit that generates an audio frequency signal having a second number of channels, a low channel encoding unit that generates a low channel audio code by encoding the audio frequency signal, a space information extraction unit that extracts space information representing spatial information of a sound, an importance calculation unit that calculates importance on the basis of the space information, a space information correction unit that corrects the space information, a space information encoding unit that generates a space information code, and a multiplexing unit that generates an encoded audio signal by multiplexing the low channel audio code and the space information code. | 2011-01-06 |
20110002394 | Method for run-length encoding of a bitmap data stream - Subtitling aims at the presentation of text information and graphical data, encoded as pixel bitmaps. The size of subtitle bitmaps may exceed video frame dimensions, so that only portions are displayed at a time. The bitmaps are a separate layer lying above the video, e.g. for synchronized video subtitles, animations and navigation menus, and therefore contain many transparent pixels. An advanced adaptation for bitmap encoding for HDTV, e.g. 1920.times.1280 pixels per frame as defined for the Blu-ray Disc Prerecorded format, providing optimized compression results for such subtitling bitmaps, is achieved by a four-stage run length encoding. Shorter or longer sequences of pixels of a preferred color, e.g. transparent, are encoded using the second or third shortest code words, while single pixels of different color are encoded using the shortest code words, and sequences of pixels of equal color use the third or fourth shortest code words. | 2011-01-06 |
20110002395 | DEBLOCKING FILTERING PROCESSOR AND DEBLOCKING FILTERING METHOD - A deblocking filtering processor includes a first deblocking filtering section provided with a typical filter intensity calculation section and a typical filter section. The typical filter intensity calculation section selects a predetermined pixel line among a plurality of pixel lines crossing a block boundary as a typical pixel line for decoded image data of a moving image that are coded in units of blocks, and performs a filter intensity calculation to obtain a typical filter intensity on the basis of pixel values included in the typical pixel line. The typical filter section provides smoothing for pixel values included in the plurality of pixel lines on the basis of the typical filter intensity. | 2011-01-06 |
20110002396 | Reference Frames Compression Method for A Video Coding System - The present application relates to apparatus for compression of the reference frames in the video coding system, reducing the memory requirements by 50%. The invention allows for compression and allocation of a frame in a memory so that parts of it can be accessed without the need for retrieval and decompression of the entire compressed frame. The invention is ideally suited for the compression of block-structured image data that is utilized in many video coding systems. | 2011-01-06 |
20110002397 | VIDEO CODER - An encoder for encoding a video signal, wherein the encoder is configured to generate an encoded scalable data stream comprising a base layer and at least one enhancement layer, wherein the encoder is further configured to generate information associated with each of the base layer and the at least one enhancement layer. | 2011-01-06 |
20110002398 | DIGITAL TELEVISION TRANSMITTER/RECEIVER AND METHOD OF PROCESSING DATA IN DIGITAL TELEVISION TRANSMITTER/RECEIVER - A digital television transmitter and a method of coding main and enhanced data in the digital television transmitter are disclosed. In the digital television transmitter, a byte-symbol converter converts main and enhanced data packets into symbols, wherein at least one of the enhanced data packets may include data place holders for known data symbols. A known data generator generates a known data symbol. A symbol processor processes a first symbol outputted from the byte-symbol converter. Herein, the symbol processor may post-decode a first bit of the known data symbol and output the post-decoded bit and an initialization data bit when the first symbol is a symbol representing one of the place holders. A trellis encoder has one or more memories for trellis-encoding a second symbol outputted from the symbol processor, wherein the memories are initialized when the initialization data bit is processed in the trellis encoder. | 2011-01-06 |
20110002399 | TRANSMITTER QUIETING AND REDUCED RATE ENCODING - In one example, a method includes defining an encoding rate for encoding a set of frames of multimedia data over a period of time, encoding the set of frames at a reduced encoding rate over the period of time such that encoding the set of frames at the reduced encoding rate defines one or more null intervals when data associated with the set of frames is not present during the period of time, transmitting the encoded set of frames via a transmitter, and blanking the transmitter during the one or more null intervals. | 2011-01-06 |
20110002400 | METHOD OF TRANSMITTING A PACKET OF DIGITAL DATA OVER A POLY-PHASE POWER LINE AFFECTED BY IMPULSIVE NOISE - The method transmits a long packet of digital data over a poly-phase power line affected by impulsive noise synchronous with phase voltages. Instead of using very complicated coding schemes, starting from the knowledge of the typical power line scenario, useful information is transmitted where noise synchronous with the main signal is absent. Time-intervals of a known or estimated duration during which the poly-phase power line is affected by impulsive noise are determined, and dummy data during the time-intervals, and useful data during other time-intervals free from impulsive noise, are transmitted. | 2011-01-06 |
20110002401 | RANDOM ACCESS CHANNEL CONSTRUCTING METHOD AND EQUIPMENT FOR WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for constructing a random access channel of a wireless communication system, in which the method includes the following steps: setting a length of a preamble; setting a length of a cyclic prefix according to the length of the preamble; and setting a random access channel structure consisting of the preamble and the cyclic prefix. The random access channel designed by the method can be flexibly set to transmit in the UpPTS, and can satisfy the demand of a small coverage scenario in a better manner. | 2011-01-06 |
20110002402 | Data Transmission - A system for transmitting data between a first device and a second device, the first device being arranged to transmit data to the second device and the second device being arranged to transmit an acknowledgement to the first device if the data transmitted by the first device is properly received by the second device; wherein the system comprises means to measure the quality of reception of acknowledgements by the first device and to modify one or more acknowledgement transmission parameters depending on the measurement. The parameters may include: transmission rate, degree of forward error correction coding, and output power. The parameters may be modified to improve the quality of reception of acknowledgements if the measured quality falls below a threshold. The means to measure the quality of reception may comprise means to determine a measure of the number, or relative number, of acknowledgements that were not properly received by the first device. In an embodiment the first device is arranged to retransmit the data if an acknowledgement is not properly received, and the means to determine a measure of the number of acknowledgements that were not properly received by the first device comprises means to determine the number of data packets that have been received by the second device which were previously properly received by the second device. | 2011-01-06 |
20110002403 | Method and Apparatus for Positioning an FFT-Window in an OFDM-Receiver - Methods for positioning an FFT-window in an OFDM-receiver are disclosed as well as electronic apparatuses and computer program products for performing the methods. The method comprises determining a position of the FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal, using the position of the FFT-window to obtain a first OFDM-symbol from the received OFDM-signal, and applying an FFT to the first OFDM-symbol to produce an FFT-output signal. The method also comprises determining a frequency dependent phase rotation component of the FFT-output signal, and removing the determined frequency dependent phase rotation component from the FFT-output signal to obtain a compensated FFT-output signal. A delay spread estimate is calculated based on at least one of the FFT-output signal and the compensated FFT-output signal, and the position of the FFT-window is adjusted based on at least the determined frequency dependent phase rotation component and the calculated delay spread estimate. | 2011-01-06 |