29th week of 2012 patent applcation highlights part 29 |
Patent application number | Title | Published |
20120182980 | METHOD AND APPARATUS FOR SAVING POWER BY USING SIGNAL FIELD OF PREAMBLE - Certain aspects of the present disclosure relate to a technique for power saving at mobile stations in Very High Throughput (VHT) systems using signal field bits of a preamble with a limited transmission overhead. The present disclosure proposes a method of indicating to a destination through a preamble cyclic redundancy check (CRC) checksum that the destination may be the intended destination of a transmission packet. The present disclosure also proposes a method of indicating to a destination through a preamble CRC that the destination may not be the intended destination of a transmission packet. In this case, decoding of the received packet can be terminated in order to save power at a receiving device. | 2012-07-19 |
20120182981 | TERMINAL AND METHOD FOR SYNCHRONIZATION - A terminal which is compatible with another terminal and is capable of performing data synchronization without a separate server, and a synchronization method using the same is disclosed. The terminal may directly connect to another terminal and receive data therefrom. The received data is synchronized with the terminal. If the received data does not suit the playback environment of the terminal, a playback tool or conversion tool may be received from a server. | 2012-07-19 |
20120182982 | ACCESS POINT WITH SIMULTANEOUS DOWNLINK TRANSMISSION OF INDEPENDENT DATA FOR MULTIPLE CLIENT STATIONS - A wireless network device includes modulation modules, each configured to receive a data stream and modulate the data stream to generate a modulated data stream. A matrix module generates a multiplexing matrix based on channel conditions between the wireless network device and each of a plurality of client stations, and applies the multiplexing matrix to each of the modulated data streams to generate multiplexed data streams. The wireless network device also includes summing modules, each configured to sum at least two of the multiplexed data streams to generate a transmit data stream. A first transmitter transmits a first one of the transmit data streams during a downlink transmission period to a first one of the client stations. A second transmitter transmits a second one of the transmit data streams to a second one of the client stations while the first transmitter transmits the first one of the transmit data streams. | 2012-07-19 |
20120182983 | METHODS FOR TRANSMITTING CLOSELY-SPACED PACKETS IN WLAN DEVICES AND SYSTEMS - A wireless local area network (WLAN) device transmits a header over an air interface, at a first modulation rate. The header may include an indication of a second modulation rate that will be used to transmit a consolidated payload. The device further transmits the consolidated payload at the second modulation rate. The consolidated payload includes multiple data units. In one embodiment, the consolidated payload includes delimiters with validation fields associated with the various data units. | 2012-07-19 |
20120182984 | NETWORK ALLOCATION - Included are embodiments for network allocation. More specifically, one embodiment of a method includes receiving, at a first communications device, without a prior RTS signal being sent, a first clear to send (CTS) signal from a second communications device, addressed to the first communications device, the CTS signal indicating a data exchange duration and sending a second CTS signal, from the first communications device, to the second communications device. | 2012-07-19 |
20120182985 | COMMUNICATION METHOD, AND TRANSMITTING APPARATUS AND RECEIVING APPARATUS USING THAT COMMUNICATION METHOD - A transmission apparatus includes a plurality of antennas and a frame configurator that selects, in a first unit time either a first transmitting method which transmits a modulated signal from at least one of the plurality of antennas, or a second transmitting method which transmits a plurality of modulated signals from the plurality of antennas, for a first carrier group arranged for a first terminal and either the first transmitting method or the second transmitting method for a second carrier group arranged for a second terminal. The frame configurator selects, in a second unit time either the first transmitting method or the second transmitting method for the first carrier group arranged for a third terminal and either the first transmitting method or the second transmitting method for the second carrier group arranged for a fourth terminal, wherein each of carrier groups includes one or more sub-carriers. | 2012-07-19 |
20120182986 | Timing Control - A method including at a first device configured for making one or more transmissions to a second device in one or more of a plurality of frequency blocks and configured to receive respective timing commands for each of said plurality of frequency blocks: determining that the most recently received timing commands for each of the plurality of frequency blocks are all valid, when a predetermined period of time has not expired since receiving the most recent timing command for any one of said plurality of frequency blocks. | 2012-07-19 |
20120182987 | XML BASED TRANSACTION DETAIL RECORDS - The present invention is directed to a method for managing transactions in a telecommunications network. The method includes creating an XML transaction detail file. At least one transaction detail record is stored in the XML transaction detail file in response to a telecommunications transaction. The at least one transaction detail record includes transaction data corresponding to the telecommunications transaction. | 2012-07-19 |
20120182988 | Communication System and Method - There is provided a packet-based communication system for conducting voice or video calls over a packet-based network. A client application on a first terminal is configured to determine an availability of one or more other, second user terminals installed with other instances of the client application, and to present a near-end user with an option to select one of said second user terminals for use by the near-end user in conjunction with the first user terminal when conducting a voice or video call with a far-end user via the client instances and packet-based communication system; thereby enabling the voice or video call to be conducted using the second terminal to consume or generate at least one stream of the call whilst the first user terminal concurrently generates or consumes at least another stream of the call or controls the call. | 2012-07-19 |
20120182989 | System and Method of Enabling a Transparent Ethernet Switch - A system and method of enabling a transparent Ethernet switch are disclosed. According to an aspect, a network switch is disclosed. The network switch can include a plurality of physical ports configured to communicate data via a network. The network switch can further include a memory configured to store a first forwarding database, and a plurality of aggregate zone entries within the first forwarding database. The aggregate zone entries can also include a port identifier of first port of the plurality of physical ports to be used as a transparent port within a first aggregate zone. | 2012-07-19 |
20120182990 | METHOD AND SYSTEM FOR MPLS-TP TUNNEL PROTECTION PROCESSING - The present invention discloses a method and system for processing an MPLS-TP tunnel protection, including: a tail node of a multiprotocol label switching transport profile (MPLS-TP) tunnel, after receiving a data message, querying a private network label table of the tail node according to a private network label carried in the data message, and acquiring a value of a protection flag field; when judging that a protection type of the MPLS-TP tunnel is 1+1 according to the value of the protection flag field, acquiring a value of a difference bit number field, and determining a value of a corresponding difference bit in a public network label of the MPLS-TP tunnel; and acquiring a value of a decision field, and carrying out corresponding processing on the data message according to a comparison result of the value of the difference bit and the value of the decision field. With the present invention, the processing performance of the data message on the MPLS-TP tunnel can be improved. | 2012-07-19 |
20120182991 | METHOD AND APPARATUS FOR HANDLING MULTICAST TRAFFIC - Aspects of the disclosure provide method and apparatus for managing multicast traffic in a domain, such as a G.hn domain. A method includes storing, at a first node of a domain, a plurality of next nodes for transmitting messages in the domain, forwarding, from the first node to the plurality of next nodes, a probe message transmitted from a second node in response to a request from a third node to join a group to receive a multicast flow that enters the domain from the second node, and storing, at the first node, a list of nodes in association with the multicast flow. The list of nodes is determined at least in part based on a path through which the probe message is transmitted from the second node to the third node. | 2012-07-19 |
20120182992 | HYPERVISOR ROUTING BETWEEN NETWORKS IN A VIRTUAL NETWORKING ENVIRONMENT - A physical host executes a virtual machine monitor (VMM) that instantiates a source virtual machine (VM). In response to the VMM receiving from the source VM a packet specifying a first destination address of a destination VM and a second destination address of a default gateway, the VMM determines whether the packet can be communicated to the destination VM without the packet being routed by the default gateway. In response to the VMM determining that the packet can be communicated to the destination VM without the packet being routed by the default gateway, the VMM forwards the packet to the destination VM such that the packet bypasses routing by the default gateway. | 2012-07-19 |
20120182993 | HYPERVISOR APPLICATION OF SERVICE TAGS IN A VIRTUAL NETWORKING ENVIRONMENT - A physical host executes a virtual machine monitor (VMM) in communication with a plurality of consumer virtual machines (VMs). In response to receipt of a packet, the VMM determines whether a service is to be performed for the packet by a service virtual machine (VM) in communication with the VMM. In response to determining that the service is to be performed for the packet by the service VM, the VMM applies a tag to the packet that differentiates the packet from any other packet sharing a common address with the packet but having a different associated consumer, passes the packet to the service VM for performance of the service, and thereafter removes the tag from the packet in response to receipt of the packet from the service VM following performance of the service. In response to receipt of the packet from the service VM, the VMM forwards the packet. | 2012-07-19 |
20120182994 | ADDRESS COMPATIBILITY IN A NETWORK DEVICE RELOAD - In one embodiment, a network device maintains address compatibility in a reload. The reload results from a reconnect event such as a reboot or a software upgrade. Before the reload, the network device establishes communication using a first address prefix. Because of the reload, the first address prefix is cleared from the network device. The service provider may provide a second address prefix. Rather than advertise the second address prefix, the network device waits for traffic from the hosts. If the hosts continue to use the first address prefix, the network device requests the first address prefix be re-assigned by the service provider. If the service provider does not re-assign the first address prefix, the network device may advertise the first address prefix in a router advertisement including a relatively short preferred lifetime. The short preferred lifetime prevents the use of the old address prefix. | 2012-07-19 |
20120182995 | METHOD AND SYSTEM FOR DATA TRANSMISSION - A method for data transmission includes: a router receives a data packet sent by an access device of a first user, where the data packet carries target device selection information including at least a user identity of a second user, and the user identity is associated with at least one access device of the second user; the router obtains a routing address of an optimal access device among access devices associated with the user identity; and the router sends the data packet to the optimal access device according to the routing address. | 2012-07-19 |
20120182996 | METHOD AND APPARATUS FOR VIRTUAL CIRCUIT ROUTES - A method and apparatus for virtual circuit routes is described. A method in a network element comprises associating a virtual circuit to a layer | 2012-07-19 |
20120182997 | METHOD AND APPARATUS FOR PROVIDING TRANSPORT OF CUSTOMER QOS INFORMATION VIA PBB NETWORKS - A customer Quality-of-Service (QoS) transport capability is depicted and described herein. The customer QoS transport capability enables transparent transport of customer QoS information via a Provider Backbone Bridging (PBB) network. The customer QoS transport capability enables customer QoS information that would normally be terminated at a point of ingress to a PBB network to be transported via the PBB network transparently and recovered at a point of egress from the PBB network. | 2012-07-19 |
20120182998 | Auto-Provisioning of Network Services Over an Ethernet Access Link - In one embodiment, an apparatus includes an Ethernet port, for connection to an Ethernet access network providing multiple different services. A plurality of local service ports are provided for connection to items of peripheral customer premises equipment (CPE), each item supporting a different, respective service. A bridge is coupled to convey data frames between the Ethernet port and the local service ports. A controller is coupled to receive via the Ethernet port at least one provisioning message indicating associations between the services and respective Virtual Local Area Network (VLAN) identifiers, and to configure the bridge, responsively to the provisioning message, to forward the data frames received via the Ethernet port on each VLAN to a respective service port in accordance with the associations. | 2012-07-19 |
20120182999 | QUALITY OF SERVICE HALF-DUPLEX MEDIA ACCESS CONTROLLER - A network switch includes a transmitter and a controller. The transmitter is configured to selectively terminate transmission of a first frame from the network switch. The controller is configured to, in response to the transmitter terminating the transmission of the first frame, increment respective attempt counts for a first class of service associated with the first frame and all classes of service lower than the first class of service, determine whether any of the respective attempt counts is greater than a predetermined attempt threshold, and, in response to any of the respective attempt counts being greater than the predetermined attempt threshold, discard frames having the first class of service and frames having any of the classes of service lower than the first class of service. | 2012-07-19 |
20120183000 | DYNAMICALLY AND EFFICIENTLY FORMING HIERARCHICAL TUNNELS - In one embodiment, a hierarchical tunnel that encapsulates a plurality of child tunnels along a shared path segment is used. The shared path segment extends from a head-end node across one or more intermediate nodes to a tail-end node. A state of a child tunnel of the plurality of child tunnels encapsulated within the hierarchical tunnel is refreshed by the head-end node sending one or more refresh messages along the child tunnel that include a request that the one or more intermediate nodes remove the state of the child tunnel without sending error messages, and sending one or more encapsulated refresh messages within the hierarchical tunnel that cause the tail-end node to continue propagation of refresh messages along the child tunnel. | 2012-07-19 |
20120183001 | Network apparatus, network configuration method and program recording medium which records a network apparatus program - A network apparatus includes a first interface unit which connects a host which holds a plurality of I/O buses and an own network apparatus via a network, a second interface unit which connects a peripheral device which holds a plurality of I/O interfaces and an own network apparatus, a control unit which controls the plurality of I/O interfaces to be connected to branches of the different I/O buses respectively. | 2012-07-19 |
20120183002 | Network Interface and Detection Module to Enable Network Communication within Information Handling Systems - A network interface module can include a housing including a first cavity configured to receive a first network plug having a first dimension. The housing also includes a second cavity within the first cavity, and configured to receive a second network plug having a second dimension that is less than the first dimension. The network interface module can also include a network detection circuit coupled to a first terminal within the housing. | 2012-07-19 |
20120183003 | APPARATUS AND METHOD FOR PROVIDING COMPATIBILITY OF TRANSMISSION SIGNAL IN COMMUNICATION SYSTEM - Method and apparatus for transmitting and receiving a signal in a broadcasting communication system are provided. Data of an input stream is divided for transmission through a frame. A header that includes information about the input stream is constructed. The frame is constructed using the header and the divided data. | 2012-07-19 |
20120183004 | Ultra-Low Frequency-Noise Semiconductor Laser With Electronic Frequency Feedback Control and Homodyne Optical Phase Demodulation - The present invention provides a semiconductor laser that operates with a frequency feedback control loop for frequency-noise reduction. The frequency-reduction architecture utilizes a homodyne optical phase demodulation approach. Such phase demodulation can be implemented with help of an unbalanced Michelson interferometer with fiber optics delay and symmetrical ‘n×n’ optical coupler. The entire demodulator is packaged in a small form-factor package which doesn't have any mechanical resonance in the sensing bandwidth, and has very low sensitivity to the external acoustic or vibration induced noise sources. | 2012-07-19 |
20120183005 | DRIVING CIRCUIT FOR ANALOG-MODULATED DIODE-LASER - A diode-laser is driven by a modulated voltage through a voltage-to-current converter. The modulated voltage has a fixed level determined by an applied fixed bias voltage and a variable level determined by a modulation voltage signal varying between minimum and maximum values. The fixed voltage level corresponds to a threshold level above which the diode-laser would provide laser-output. The modulation voltage signal is monitored and compared with a predetermined set value. If the monitored voltage signal falls below the set value, the modulated voltage is disconnected from the voltage-to-current converter and the output of the diode-laser falls to zero. | 2012-07-19 |
20120183006 | OPTICAL DEVICE, LASER BEAM SOURCE, LASER APPARATUS AND METHOD OF PRODUCING OPTICAL DEVICE - After forming domain inverted layers | 2012-07-19 |
20120183007 | SURFACE-EMITTING SEMICONDUCTOR LASER DEVICE IN WHICH AN EDGE-EMITTING LASER IS INTEGRATED WITH A DIFFRACTIVE OR REFRACTIVE LENS ON THE SEMICONDUCTOR LASER DEVICE - A surface-emitting semiconductor laser device is provided that includes an edge-emitting laser formed in various layers of semiconductor material disposed on a semiconductor substrate, a polymer material disposed on the substrate laterally adjacent the layers in which the edge-emitting laser is formed, a diffractive or refractive lens formed in or on an upper surface of the polymer material, a side reflector formed on an angled side reflector facet of the polymer material generally facing an exit end facet of the laser, and a lower reflector disposed on the substrate beneath the polymer material. Laser light passes out of the exit end facet and propagates through the polymer material before being reflected by the side reflector toward the lower reflector. The laser light is then re-reflected by the lower reflector towards the lens, which directs the laser light out the device in a direction that is generally normal to the upper surface of the substrate. | 2012-07-19 |
20120183008 | Surface Catalyst Infra Red Laser - An energy converter reacts hydrocarbons and air on a catalyst configuration to produce a population inversion. A photovoltaic system may extract the radiating energy, and a laser system may extract a significant fraction of the reaction energy in the form of coherent radiation. The flooding of the catalyst adsorption sites with fuel and the choice of catalyst predisposes the adsorbing oxygen molecules to create mono-atomic oxygen hot-atoms, which deposit the considerable energy of oxygen adsorption directly into a reaction channel of adjacent, adsorbed and simple fuel radicals, thereby producing simple, energetic product molecules, concentrating the energy in one or a few modes, and strongly favoring inverted populations. A solid state method to stimulate precursor chemisorbed specie dissociation accelerates the reaction rates, providing a method to greatly intensify pulsed power output, increase efficiency, and to facilitate nano-scale and micro-scale thermal energy heat rejection processes. | 2012-07-19 |
20120183009 | HORIZONTAL CAVITY SURFACE EMITTING LASER DIODES, VERTICAL ILLUMINATED PHOTODIODES, AND METHODS OF THEIR FABRICATION - The horizontal cavity surface emitting laser includes a cavity structure portion including a stacked structure of a first conduction type clad layer, an active layer and a second conduction type clad layer stacked over a semiconductor substrate and causing light generated by the active layer to be reflected or resonated, an optical waveguide layer provided at part of the semiconductor substrate and guiding the light, a reflector provided in the optical waveguide layer, for reflecting the light and emitting the light from the back surface of the semiconductor substrate, and a condensing lens provided at the back surface thereof and focusing the reflected light. The back surface thereof has a groove provided with the condensing lens and a terrace-like portion disposed below the cavity structure portion and has a terrace shape with the cleavage direction along a longitudinal direction thereof provided along a cleavage direction of the semiconductor substrate. | 2012-07-19 |
20120183010 | METHOD FOR CONTROLLING A MELT PROCESS IN AN ARC FURNACE AND SIGNAL PROCESSING COMPONENT, PROGRAM CODE AND DATA MEDIUM FOR PERFORMING SAID METHOD - A method for controlling a melt process in an arc furnace and signal processing component, program code, and data medium for performing said method are provided. According to the method, sound signals or vibrations from the interior of the furnace container are captured by solid-borne sound sensors, from which characteristic values can be derived for the distribution of melting material, melt, and slag in the furnace fill. A characteristic value SM for thermal radiation impinging on the furnace wall of the container, a characteristic value M for the lumpiness of the melting material in the volume of furnace fill, and a characteristic value MM for the change to the portion of solid melting material contacting the furnace wall are generated in priority sequence. The energy distribution at the electrodes is changed by a control system analyzing the characteristic values in priority sequence, such that thermal load peaks are dampened or even completely prevented. To this end, the strand impedances stored as target values are modified. If the control is not sufficient, the thermal power of the arc is reduced as a subordinate means. A rapidly and reliably effective operating regime for the processes in the arc furnace can thereby be implemented. | 2012-07-19 |
20120183011 | TEMPERATURE DETECTING DEVICE, ELECTRO-OPTIC DEVICE AND ELECTRONIC APPARATUS - A control unit sets a time interval for measuring a temperature of a liquid crystal panel as a first time interval (1 second), and thereafter measures the temperature of the liquid crystal panel each time the first time interval elapses. When the temperature of the liquid crystal panel is stabilized, the control unit sets a time interval for measuring the temperature of the liquid crystal panel as a second time interval (5 seconds). The control unit measures the temperature of the liquid crystal panel each time the second time interval elapses. Moreover, if an operation to change the amount of light reaching the liquid crystal panel is performed, the control unit restores the time interval for measuring the temperature of the liquid crystal panel to the first time interval. | 2012-07-19 |
20120183012 | LUMINESCENT ORGANIC/INORGANIC MATRIX, METHOD FOR THE PRODUCTION THEREOF AND LUMINESCENT MOLECULAR THERMOMETER BASED ON SAID MATRIX - Thermometer comprising an organic-inorganic matrix which comprises tris complex (β-diketonate) of two different cations of lanthanide elements. In addition, the invention also relates to the matrix, methods for preparing it and methods of using a thermometer to measure absolute temperatures. | 2012-07-19 |
20120183013 | DUAL WAVEBAND TEMPERATURE DETECTOR - There are many industrial applications in which non-contact temperature sensing is useful for increasing production speed and quality, such as printing, laminating, extrusion, and metal forming. Disclosed is a non-contact temperature determining apparatus which uses two wide wavelength bands integrating sensors to determine the radiance ratio of a target and thereby determine a corresponding temperature of the target. Also disclosed is a non-contact temperature determining apparatus in which a beam splitter passes one wide wavelength band to a sensor and reflects another distinct wide wavelength band to another sensor from which temperature can be determined. A disclosed embodiment of the dual waveband temperature detector improves upon traditional and currently available ratio pyrometers by further reducing the cost of the system, making installation and use easier, and improving temperature detection for low temperature industrial applications. | 2012-07-19 |
20120183014 | CONTROL OF A SYSTEM WITH A LARGE THERMAL CAPACITY - The invention provides a method and a system for controlling floor heating or climate regulating systems with long time constants. According to the invention, a flow of a fluid is provided through the floor or through a similar medium with large thermal inertia. An induced heat is determined by adding up a plurality of differences between an inlet temperature of the fluid when it enters the medium and an outlet temperature of the fluid when it leaves the medium. The temperatures are sampled with a fixed sampling time and within a fixed period of time, and a corresponding change in temperature of the medium over the fixed period of time is determined. In the future, the temperature of that medium is controlled by use of a ratio between the induced heat and the change in temperature. | 2012-07-19 |
20120183015 | Apparatus and method for spatially resolved temperature measurement - Apparatus for spatially resolved temperature measurement, comprising at least one optical fibre ( | 2012-07-19 |
20120183016 | TEMPERATURE DETECTION CIRCUIT AND SENSOR DEVICE - A temperature detection circuit capable of generating a temperature detection voltage with reduced noise level, and a sensor device using the same are provided. The temperature detection circuit includes a temperature detection voltage generator that generates a first temperature detection voltage of which the voltage level based on a reference voltage varies according to the temperature; a temperature detection voltage inverter that inverts the first temperature detection voltage on the basis of the reference voltage, and amplifies or attenuates the first temperature detection voltage to generate a second temperature detection voltage; and a temperature detection voltage adder that adds up the first temperature detection voltage and the second temperature detection voltage. | 2012-07-19 |
20120183017 | SYSTEMS AND METHODS FOR DETERMINING DEVICE TEMPERATURE - Circuitry for measuring and/or monitoring device temperature may include a first node coupled to ground, and a second node and a first resistor coupled in series to ground and in parallel to the first node. A first current driven to the first node and a second current driven to the second node can be selected such that a first voltage measured at the first node and a second voltage measured at the second node are substantially equal. The circuitry may also include a third node and a second resistor coupled in series to ground. A third current driven to the third node can be selected such that a third voltage measured at the third node is substantially equal to a reference voltage. Measures of the second and third currents and measures of the first and second resistors can be used to determine device temperature. | 2012-07-19 |
20120183018 | METHOD AND APPARATUS FOR EQUALIZING CDMA SYSTEM - A minimum mean square error (MMSE) equalizer corresponding to a plurality of receive antennas is generated using (i) channel information for a first plurality of users including a desired user, (ii) a ratio of white noise power to noise power due to code division multiple access (CDMA) signals corresponding to the first plurality of users, (iii) channel information for a second plurality of users served by another base station, and (iv) a ratio of noise power due to CDMA signals corresponding to the second plurality of users to noise power due to CDMA signals corresponding to the first plurality of users. CDMA signals received by a plurality of antennas are filtered using the MMSE equalizer. The CDMA signals are despread using a spread code corresponding to the desired user. | 2012-07-19 |
20120183019 | Efficient Despread and Respread of Multi-rate CDMA Signals - A system and method, comprising a despread module that receives a descrambled signal and an identification of active codes, a soft-symbols memory communicably coupled to the despread module, and a respread module that receives the identification of active codes, a modulation type and gain estimate for the active codes, and soft symbol estimates for the active codes from the soft-symbols memory which is communicably coupled to the respread module, the despread module, comprising: a despread signal memory that receives the descrambled signal, a vector code despread module communicably coupled to the despread signal memory, an active code soft symbol grabber that receives the identification of active codes and is communicably coupled to the despread signal memory, wherein the despread signal memory receives properly arranged despread data from the vector code despread module. | 2012-07-19 |
20120183020 | Non-Coherent Space-Time Trellis-Coded Modulations for Network-Coded Wireless Relay Communications - This invention provides a method for jointly optimizing network coding, channel coding, and signal constellations in non-coherent wireless multiple-input multiple-output (MIMO) wireless relay networks for the case when transceivers cannot obtain any knowledge of channel state information (CSI) due to high-speed mobility of the transceivers. In the relay networks, two terminal transceivers simultaneously transmit data to an intermediate relaying transceiver, which in turn broadcasts mixed data using physical-layer network coding to both terminals. The embodiments of this invention exploit different blind space-time trellis-coded modulations (ST-TCM) for each user, whose codebook is jointly generated over a Grassmannian manifold. The method is provided by exponential mapping with affine-lattice convolution for joint optimization of channel coding, modulations, and network coding. The method is designed for fast fading channels with and without interleaving. The method significantly improves performance in non-coherent bidirectional relaying MIMO networks. | 2012-07-19 |
20120183021 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication device includes a transmission circuit that transmits a transmission signal under a certain transmission condition, a reception circuit that receives a reception result of the transmission signal under a certain reception condition and the certain reception condition, and an adjustment circuit that transmits information used to adjust the reception condition based on the reception result and the reception condition from the transmission circuit. | 2012-07-19 |
20120183022 | TRANSMITTING APPARATUS AND METHOD, AND RECEIVING APPARATUS AND METHOD - A method of transmitting data symbols via an Orthogonal Frequency Division Multiplexed (OFDM) symbols that includes forming data symbols into pairs and generating a first pair of modulation symbols for each of the pairs of data symbols, where the first pair of modulation symbols form first and second modulation symbols of an Alamouti cell. The method further includes forming a first version of the OFDM symbols by modulating the sub-carriers allocated for carrying the data with the first and second modulation symbols of the Alamouti cells, and modulating the one or more pilot carriers of the first version of the OFDM symbol according to a predetermined pattern. | 2012-07-19 |
20120183023 | IMPLEMENTATIONS FOR WIRELESS SIGNAL PROCESSING - Implementations including methods, apparatuses, and systems relating to processing wireless signals are disclosed. Such processing may be performed, at least in part, at a receiver platform receiving such wireless signals and/or at a remote computing platform to obtain information that may be used in a variety of contexts, including cellular communications, radio-frequency identification, and navigation. In some techniques, modulated signals are received at a receiver platform, and at least partially demodulated and used to generate data. The data is transmitted to one or more network resources, and processed to obtain information based on the information in the modulated signals. | 2012-07-19 |
20120183024 | DIGITAL SIGNAL TRANSFER METHOD AND APPARATUS - The invention relates to a digital signal transfer method and apparatus in which signals are transferred between first and second electrically isolated circuits. An announcement signal is transferred from the first circuit to the second circuit and a data signal is transferred from the first circuit to the second circuit within a data signal time window associated with the announcement signal. | 2012-07-19 |
20120183025 | Optimal signal processing for twisted pair transceivers - A receiver that easily receives signals from transmission channels having long cable lengths is presented. The receiver includes an analog pre-filter that removes distortions and intersymbol interference from a predetermined transmission channel. The analog pre-filter is coupled with a digital receiver that provides digital equalization. The combination of analog equalization with digital equalization allows for simplified digital equalization while retaining the versatility of digital signal processing. | 2012-07-19 |
20120183026 | Crosstalk Limitation between Modems - A device for providing access to a data communication network for modems is connected to the modems via a set of communication lines. The modems include a first group supporting vectoring and a second group not supporting vectoring. The device investigates the expected value of an element in a synchronization interval to be received by a modem in the second group, investigates the value of an element of at least one data sequence assigned to the communication line of this modem, compares the values, selects the element of the investigated data sequence for transmission if the element value corresponds to the expected value and transmits the selected element and corresponding elements of a number of pilot sequences assigned to the first group of modems via the set of communication lines. | 2012-07-19 |
20120183027 | Dual digital to analog converters (DACs) with codeword parsing - Dual digital to analog converters (DACs) with codeword parsing. With respect to a codeword that is provided to a DAC, a processing module (e.g., a rollover processor) operates to divide, partition, etc. the codeword into different respective sub-codewords as may be provided to two or more DAC's. Adaptation with respect to differently generated sub-codewords with respect to different respective codewords may be made in terms of any one or more of a variety of characteristics, including sub-codeword width (e.g., the number of bits included within a sub-codeword), quantization steps, etc. Moreover, such adaptation may be in consideration of any one or more local and/or remote operating characteristics of one or more devices, communication links, etc. within a communication system or network. Different respective sub-codewords undergo processing by different respective DAC's in generating respective analog signals for combination in generating a final or output analog signal. | 2012-07-19 |
20120183028 | APPARATUS AND METHOD FOR RANGING IN DISTRIBUTED ANTENNA SYSTEM - An apparatus and a method for ranging in a distributed antenna system are provided. A method for an operation of a Mobile Station (MS) in a distributed antenna system includes obtaining per-group ranging code configuration information indicating a ranging code allocation for each antenna port group, determining an antenna port group that the MS belongs to, and performing a ranging procedure by one of a plurality of ranging codes allocated to the antenna port group that the MS belongs to. | 2012-07-19 |
20120183029 | CELLULAR MODEM PROCESSING - A cellular mobile station including a modem processor and memory. The memory includes instructions for the modem processor to perform layer | 2012-07-19 |
20120183030 | Cyclostationary Signal Detection in the Angular Domain for Communication Systems - Apparatuses and methods for providing efficient spectrum sensing and signal detection using cyclostationary based spectrum sensing algorithms. A method embodiment is provided, comprising: receiving input samples of a signal having expected predetermined properties; transforming the input samples to angular form and obtaining data samples corresponding to at least one angle vector; performing a cyclostationarity test on the at least one angle vector, the cyclostationarity test being done entirely in an angular domain; wherein the cyclostationarity test comprises testing the at least one angle vector for a non-uniform distribution, the non-uniform distribution of the at least one angle vector indicating cyclostationarity in the input samples; and where cyclostationarity in the input samples is determined, refraining from transmitting radio frequency signals over an air interface at a frequency corresponding to the received signal. Apparatuses for implementing the methods are also disclosed. | 2012-07-19 |
20120183031 | Distortion and aliasing reduction for digital to analog conversion - Distortion and aliasing reduction for digital to analog conversion. Synthesis of one or more distortion terms made based on a digital signal (e.g., one or more digital codewords) is performed in accordance with digital to analog conversion. The one or more distortion terms may correspond to aliased higher-order harmonics, distortion, nonlinearities, clipping, etc. Such distortion terms may be known a priori, such as based upon particular characteristics of a given device, operational history, etc. Alternatively, such distortion terms may be determined based upon operation of a device and/or based upon an analog signal generated from the analog to conversion process. For example, frequency selective measurements made based on an analog signal generated from the digital to analog conversion may be used for determination of and/or adaptation of the one or more distortion terms. One or more DACs may be employed within various architectures operative to perform digital to analog conversion. | 2012-07-19 |
20120183032 | Determining Spectral Samples of a Finite Length Sequence at Non-Uniformly Spaced Frequencies - Techniques disclosed herein are generally related to methods and devices for determining spectral samples for a finite length sequence. Some example methods include, for each time-indexed sample in a data sample sequence comprising a plurality of samples, generating a sample-specific phase value set associated with a respective time index of the sample and a set of predetermined frequencies. Some examples further include, mapping each sample-specific phase value set to a corresponding sample-specific iso-phasor set and calculating an altered iso-phasor set. Some examples include generating a rotated sample value set by unmapping the altered iso-phasor set to obtain real and imaginary components of the sample rotated by the corresponding sample-specific phase value set. Some addition examples include summing selected rotated sample values from each of the sets of rotated sample values to create a spectral sample vector having a spectral sample of the sequence and outputting the spectral sample vector. | 2012-07-19 |
20120183033 | RECEIVING AN INPUT SIGNAL OVER A CHANNEL OF A WIRELESS NETWORK - Method, apparatus and computer program product for processing an input signal received over a channel of a wireless network at an apparatus. In one embodiment, an apparatus includes a plurality of receiver processing means, wherein each one of the plurality of receiver processing means is repeatedly selected to perform the processing of the input signal for a respective time interval thereby generating a respective plurality of output signals and, only one of the receiver processing means is selected for said processing at a time. A respective quality measure of each of the plurality of output signals is compared. The selection of the plurality of receiver processing means is controlled in dependence upon the comparison of the quality measures of the output signals, such that the receiver processing means which generates the output signal having the quality measure indicating the highest quality is selected for the longest time interval. | 2012-07-19 |
20120183034 | Spectrally constrained impulse shortening filter for a discrete multi-tone receiver - A channel in a multiple carrier communication system is equalized by computing a target spectral response, shortening the impulse response of the channel so that a significant part of an energy of the impulse response is confined to a region that is shorter than a target length and filtering the signal based on the target spectral response. | 2012-07-19 |
20120183035 | Methods and arrangements for detecting weak signals - The invention provides a method and an arrangement for detecting moving point-targets within a large set of noisy measurements. The method is based on Bayesian model selection where the measurements containing targets are modeled with their physical trajectories and the non-target measurements are modeled with the statistical distribution of measurements containing no targets. An a posteriori probability density function is utilized together with a optimization algorithm specifically designed for this problem. Advantages of the invention involve a numerically efficient formulation of the a posteriori probability density, combined with the optimization algorithm. The main applications of the invention are in detecting moving targets within e.g., radar, sonar, lidar and telescopic measurements. The method is also applicable for multi-instrument data fusion. | 2012-07-19 |
20120183036 | METHOD AND RECEIVER FOR ESTIMATING THE CHANNEL IMPULSE RESPONSE USING A CONSTANT MODULUS INTERFERENCE REMOVAL ITERATION - A receiver and associated method estimates a channel impulse response of the communications signal. A communications signal is received as a burst of transmitted symbols, including a known training sequence. The joint estimation of timing offset and initial channel impulse response is determined based on the cross-correlations of the known transmitted symbols and received communications signal. A constant modulus interference removal iteration is applied to improve the initial channel impulse estimation. | 2012-07-19 |
20120183037 | EQUALISATION OF A SIGNAL RECEIVED OVER A WIRELESS CHANNEL - An apparatus, method and program for processing a signal received over a wireless channel. The apparatus comprises: a channel searcher configured to determine a profile of the channel in the form of energy values for a plurality of rays at respective channel positions, and an equaliser for equalising the signal based on a variable window of the equaliser. The channel searcher is configured to estimate dispersion of the channel by determining a measure of variance of ray distance from a reference position within the channel profile weighted by ray energy. The equaliser is coupled to the channel searcher and arranged to adapt the window in dependence on the measure of energy-weighted ray distance variance. | 2012-07-19 |
20120183038 | TRANSMITTING CIRCUIT, RECEIVING CIRCUIT, AND COMMUNICATION SYSTEM EQUIPPED THEREWITH - In a related transmitting circuit employing electromagnetic induction that is used in a communication system, there is a problem in that, because only one inductor is used in the transmitting circuit, it is impossible to perform communication at a data rate higher than the self-resonant frequency of the inductor. A transmitting circuit according to an embodiment of the present invention is a transmitting circuit that drives an inductor to transmit data to a semiconductor chip insulated from a semiconductor chip on which the transmitting circuit is mounted, and includes a driving circuit that receives outgoing data transmitted at a data rate higher than the self-resonant frequency of the inductor and outputs an outgoing signal that drives the inductor at the data rate of the outgoing data. | 2012-07-19 |
20120183039 | CODING STATIC VIDEO DATA WITH A BASELINE ENCODER - In general, techniques are described for encoding static video data using a baseline video encoder. A device comprising a baseline video encoder, a wireless interface and a control unit may implement the techniques. The baseline video encoder encodes a portion of this static video data at a first quality. The wireless interface wirelessly transmits the encoded first portion to a remote display device. The control unit identifies a region of interest in the portion of the video data to be re-encoded at a second quality, where the second quality is higher than the first quality. The baseline video encoder re-encodes the identified region of interest at the second quality without re-encoding any other regions of the portion of the video data at the second quality. The wireless interface wirelessly transmits the re-encoded identified region of interest to the remote display device. | 2012-07-19 |
20120183040 | Dynamic Video Switching - In an example, a dynamic codec allocation method is provided. The method includes receiving a plurality of datastreams and determining a respective codec loading factor for each of the datastreams. The datastreams are assigned to codecs, in order by respective codec loading factor, starting with the highest respective codec loading factor. Initially, the datastreams are assigned to a hardware codec, until the hardware codec is loaded to substantially maximum capacity. If the hardware codec is loaded to substantially maximum capacity, the remaining datastreams are assigned to a software codec. As new datastreams are received, the method repeats, and previously-assigned datastreams can be reassigned from a hardware codec to a software codec, and vice versa, based on their relative codec loading factors. | 2012-07-19 |
20120183041 | INTERPOLATION FILTER FOR INTRA PREDICTION OF HEVC - 4-tap interpolation filters are able to improve intra prediction when used instead of linear interpolation. | 2012-07-19 |
20120183042 | Methods and Systems for Facilitating Multimedia Data Encoding - Several methods and systems for facilitating multimedia data encoding are disclosed. In an embodiment, a plurality of picture buffers associated with multimedia data are received in an order of capture associated with the plurality of picture buffers. Buffer information is configured for each picture buffer from among the plurality of picture buffers comprising at least one of a metadata associated with the corresponding picture buffer and one or more encoding parameters for the corresponding picture buffer. A provision of picture buffers in an order of encoding is facilitated based on the configured buffer information. | 2012-07-19 |
20120183043 | Method for Training and Utilizing Separable Transforms for Video Coding - A video encoded as a bit stream is decoded using trained sparse orthonormal transforms generated from decoded prediction residual signals, wherein the transforms have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, an L | 2012-07-19 |
20120183044 | VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM WITH MEMORY STORING - A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue. | 2012-07-19 |
20120183045 | VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM INCLUDING CLIPPING - A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue. | 2012-07-19 |
20120183046 | VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM WITH INVERSE TRANSFORM SHIFTING MEMORY - A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue. | 2012-07-19 |
20120183047 | VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM WITH INVERSE TRANSFORM CLIPPING - A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue. | 2012-07-19 |
20120183048 | VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM WITH MULTIPLE CLIPPING - A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue. | 2012-07-19 |
20120183049 | METHODS FOR DELTA-QP SIGNALING FOR DECODER PARALLELIZATION IN HEVC - By implementing a new bitstream for a Delta-Quantization Parameter (DQP), a decoder is able to implement parallel decoding of multiple coding units within a largest coding unit. In some embodiments, the DQP is placed immediately after the mode information of the first coding unit. In some embodiments, the DQP is placed after the mode information of the first non-skipped coding unit. In some embodiments, the DQP is placed after the first non-zero coded block flag. | 2012-07-19 |
20120183050 | PARAMETRIC LOOP FILTER - A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw | 2012-07-19 |
20120183051 | METHOD FOR VIDEO ENCODING MODE SELECTION AND VIDEO ENCODING APPARATUS PERFORMING THE SAME - A method for video encoding mode selection and a video encoding apparatus for performing the method are provided. The method includes transforming an original image block into the frequency domain for each of two or more encoding modes, quantizing the transformed image blocks, performing distortion estimation for encoded blocks corresponding to the encode modes on the basis of quantized indices of the quantized image blocks and quantization parameters, performing rate estimation for the encoded blocks corresponding to the encode modes on the basis of quantized indices of the quantized image blocks, and performing encoding mode selection using estimated block rate values and estimated block distortion values. Hence, a method is provided that enables suitable encoding modes to be selected through efficient and effective computation of rate-distortion costs. In addition, a video encoding apparatus is provided that can execute the method. | 2012-07-19 |
20120183052 | METHOD AND SYSTEM FOR PROCESSING VIDEO DATA - In various embodiments, a significance map of a matrix of video data coefficients is encoded or decoded using context-based adaptive binary arithmetic coding (CABAC). The significance map scanned line-by-line along a scanning pattern. Each line may be a vertical, horizontal, or diagonal section of the scanning pattern. Context models for each element processed in a particular line are chosen based on values of neighboring elements that are not in the line. Avoiding reliance on neighbors that are in the same line facilitates parallel processing. | 2012-07-19 |
20120183053 | METHODS AND APPARATUS FOR EMBEDDED QUANTIZATION PARAMETER ADJUSTMENT IN VIDEO ENCODING AND DECODING - Methods and apparatus are provided for embedded quantization parameter adjustment in video encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in a picture. A quantization parameter, applied to one or more transform coefficients obtained by transforming a difference between an original version of the block and at least one reference block, is derived from reconstructed data corresponding to at least the block. | 2012-07-19 |
20120183054 | CODEWORD SPACE REDUCTION FOR INTRA CHROMA MODE SIGNALING FOR HEVC - Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 7 different modes defined in AVC: vertical, horizontal, DC, diagonal directions, and “same as luma”. Statistics show that the “same as luma” mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard. | 2012-07-19 |
20120183055 | Temporal Prediction Structure Aware Temporal Filter - Disclosed are a system, method, apparatus, and computer readable media containing instructions for pre-filtering one or more pictures of a prediction structure. In an exemplary embodiment, a system includes an input for receiving the one or more pictures and a pre-filter, operatively coupled to the input and receiving the one or more pictures. The pre-filter can include a prediction position determining module for determining a position of at least one picture in the prediction structure, a context memory for storing determined position information, and a filter module for selecting a filter context based on the determined position and using the selected filter context to filter the at least one picture. | 2012-07-19 |
20120183056 | METHOD AND DEVICE FOR IMPROVED MULTI-LAYER DATA COMPRESSION - An encoder and method for encoding data in a scalable data compression format are described. In particular, process for encoding spatially scalable video are described in which the base layer uses downscaled residuals from a full-resolution encoding of the video in its motion estimation process. The downscaled residuals may also be used in the coding mode selection process at the base layer. | 2012-07-19 |
20120183057 | SYSTEM, APPARATUS, AND METHOD FOR ENCODING AND DECODING DEPTH IMAGE - An apparatus and method for encoding and decoding a depth image. An encoding apparatus may apply a block to a plurality of pixels forming a depth image, may divide the block into at least two areas based on a representative value, and may perform prediction encoding. Additionally, the encoding apparatus may encode prediction information associated with the block, may separate the at least two areas, and may select a prediction mode to perform prediction encoding. | 2012-07-19 |
20120183058 | MACRO-BLOCK ENCODING OF SKIPPED VIDEO FRAMES - A video system includes an encoder for generating a compressed bit stream in response to a received video signal. A transitional location is located in the bit stream that includes skip macro-block encoding, where the transitional location provides an indication where a linear relationship starts to exist between a length of the encoded bit stream and a length of a number of skipped macro-blocks. The skipped macro-blocks in the bit stream before the transitional location are encoded using a predetermined nonlinear relationship between the length of the encoded bit stream and the length of the number of skipped macro-blocks, whereas skipped macro-blocks in the bit stream are encoded using a linear relationship between the length of the encoded bit stream and the length of the number of skipped macro-blocks. | 2012-07-19 |
20120183059 | IMAGE CODING METHOD, IMAGE DECODING METHOD, MEMORY MANAGING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, MEMORY MANAGING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - With an image coding method which allows reduction of processing loads, when pictures included in a video signal are classified into layers so as to belong to their respective layers, a picture that belongs to the second layer that is located in a range restricted according to the first layer to which a current picture to be coded that is one of the pictures belongs, is referred to as a reference picture for the current picture, and the current picture is coded based on the reference picture. | 2012-07-19 |
20120183060 | TECHNIQUES FOR DESCRIBING TEMPORAL CODING STRUCTURE - The disclosed subject matter describes a new pattern description that can be part of an SEI message or a parameter set, and can be used to describe a temporal picture coding structure and associated bitrates and frame rates. The knowledge of the coding structure can benefit transraters, bitstream extractors, and digital video recorders. Decoders can utilize the coding structure information for example, to decode pictures in parallel, using multiple threads/cores. | 2012-07-19 |
20120183061 | Apparatus and Method for Decoding Picture Data - A decoding apparatus for decoding two encoded field data obtained by hierarchically encoding two field data associated with each of a plurality of picture data composing a moving picture image. The decoding apparatus comprising: a first decoding unit configured to decode one of the two encoded field data and obtain information associated with the two encoded field data; a conversion unit configured to interpolate first predicted image data generated by decoding by the first decoding unit according to the information and generate second predicted image data of a scanning position of the other encoded field data of the two encoded field data; and a second decoding unit configured to decode the other encoded field data of the two encoded field data based on the second predicted image data generated by the conversion unit. | 2012-07-19 |
20120183062 | METHOD OF EFFECTIVELY PREDICTING MULTI-LAYER BASED VIDEO FRAME, AND VIDEO CODING METHOD AND APPARATUS USING THE SAME - A method and apparatus are provided for effectively predicting a video frame that use all of the advantages of an intra mode and an intra BL mode in multi-layer structure based-video coding. The method includes reconstructing the intra block of a lower layer using the previously reconstructed first neighboring blocks of the intra block; subtracting the first neighboring blocks from previously stored the second neighboring blocks of an upper layer corresponding to the first neighboring blocks; creating a differential predicted block based on a predetermined intra prediction mode by performing intra prediction using virtual differential neighboring blocks that are created as a result of the subtraction; adding the differential predicted block and the reconstructed intra block; and subtracting a predicted block, which is created as a result of the addition, from a block of the upper layer corresponding to the intra block. | 2012-07-19 |
20120183063 | CODEWORD SPACE REDUCTION FOR INTRA CHROMA MODE SIGNALING FOR HEVC - Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 5 different modes defined in AVC: vertical, horizontal, DC, diagonal down right, and “same as luma”. Statistics show that the “same as luma” mode is frequent used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard. | 2012-07-19 |
20120183064 | CODEWORD ASSIGNMENT FOR INTRA CHROMA MODE SIGNALING FOR HEVC - Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 5 different modes defined in AVC: vertical, horizontal, DC, diagonal down right, and “same as luma”. Statistics show that the “same as luma” mode is frequent used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard. | 2012-07-19 |
20120183065 | Scalable Video Coding Method, Encoder and Computer Program - A scalable video coding method for coding a video sequence ( | 2012-07-19 |
20120183066 | DEPTH MAP CODING AND DECODING APPARATUS AND METHOD - An apparatus and method for coding and decoding a depth image are provided. The depth image coding apparatus predicts directivity of a current macro block using coded adjacent macro blocks. An intra-prediction mode that intra-codes the current macro block using the predicted directivity is included in intra-candidate coding modes. Priorities of intra-candidate coding modes and inter-candidate coding modes are arranged according to characteristics of a color image and coded. As a result, coding efficiency for a depth image may be increased. | 2012-07-19 |
20120183067 | B-PICTURE SYNTAX CHANGE FOR GENERALIZED BI-PREDICTION IN HIGH EFFICIENCY VIDEO CODING (HEVC) - An enhanced prediction direction method and encoding syntax for B-pictures in state-of-the-art video compression. In bi-directional prediction, instead of using one motion vector (MV) from list | 2012-07-19 |
20120183068 | High Efficiency Low Complexity Interpolation Filters - Embodiments for high efficiency low complexity interpolation filters for High Efficiency Video Coding are disclosed herein, specifically novel techniques for a video compression system. In order to estimate and compensate sub-pel displacements, the image signal on these sub-pel positions is generated by an interpolation process. In HEVC, sub-pel pixel interpolation is performed using filters. Generally, the filter may have 8 taps to determine the sub-pel pixel values for sub-pel pixel positions, such as half-pel and quarter-pel positions. The taps of an interpolation filter weight the integer pixels with coefficient values to generate the sub-pel signals. Different coefficients may produce different compression performance in signal distortion and noise. | 2012-07-19 |
20120183069 | Frame Prediction System and Prediction Method Thereof - The present invention discloses a frame prediction system and a prediction method thereof. An initializing module initializes a first image block having a plurality of pixels. A providing module provides a first centroid and a first motion vector of a second image block. The location lookup module finds a location according to the first centroid, and generates a first weight and a second weight respectively according to a relationship between each of the pixels, the first centroid and the location. A vector lookup module finds a second motion vector, which gives a minimum pixel intensity error for the plurality of pixels in the first image block according to the first centroid, the first motion vector, the location, the first weight and the second weight. A processing module sequentially calculates a plurality of predictive intensity values according to the motion vectors and the weights. | 2012-07-19 |
20120183070 | METHOD OF CODING AND DECODING IMAGES, CORRESPONDING DEVICE FOR CODING AND DECODING AND COMPUTER PROGRAM - A method and apparatus are provided for coding a signal from images, the images being split into sub-blocks of pixels. The method includes grouping at least two sub-blocks into at least one block of larger size, when the sub-blocks comply with at least one predetermined grouping criterion. A prediction is performed by applying at least one mode of motion prediction using at least two distinct motion prediction vectors, for at least one block of larger size, the motion prediction vectors being associated respectively with sub-sets of the block of larger size, comprising at least one of the sub-blocks of the block of larger size. The sub-sets are predefined and distinct. | 2012-07-19 |
20120183071 | VIDEO DECODER WITH ADAPTIVE OUTPUTS - In one aspect, there is provided a video decoder including a first write port to write uncompressed video data to a first buffer in a first format adapted based on an input required by the video decoder and to suppress writing to the first buffer. The video decoder also includes a second write port to write uncompressed video data to a second buffer in a second format adapted to provide the uncompressed video data for subsequent processing external to the video decoder. | 2012-07-19 |
20120183072 | MOVING PICTURE DECODING APPARATUS - Provided is a moving picture decoding apparatus including: a picture memory ( | 2012-07-19 |
20120183073 | SYSTEMS AND METHODS FOR WAVELET AND CHANNEL-BASED HIGH DEFINITION VIDEO ENCODING - A wavelet transform (WT) is applied to a data stream of high definition video frames, each comprising one or more data channels digitally representing the same image. A WT is applied to each channel. Visual-quality preserving data filters and data substitution techniques are selectively applied that typically lead to at least 90-to-1 compression of the final encoded video frame. Image edge data is extracted and preserved and image noise is reduced to enhance compressibility. After the first WT, primarily low frequency (LL) image data is retained. With each later WT, more non-LL data is retained. Temporal sequences of LL images that result from the final iteration of the wavelet transform are compressed by means of a chain of invertible differenced images. Any color space can be used. Cross-channel conditional substitution is applicable. Complete multiresolution scalability is incorporated into the encoded product. Extra-high definition video encoding is also achievable. | 2012-07-19 |
20120183074 | VIDEO ENCODER/DECODER, METHOD AND COMPUTER PROGRAM PRODUCT THAT PROCESS TILES OF VIDEO DATA - In video encoding it is common to encode the image data to remove redundancies in the information to be transmitted. While the pixel data is usually arranged in pixel blocks, the blocks can be arranged in one or more groups of N×M blocks called tiles. The tiles avoid the need to send header information on a tile-by-tile or block-by-block basis, and simplifies parallel processing of the tiles. Bits from respective tiles may then be reformatted to recreate bits according to a raster-scan direction. This enables the decoder to receive the bits in a regular raster-scan format, but also have the ability to decode the tiles once the bits are reformatted. By partitioning an image into tiles of size N×M, it is possible to further exploit the intra-frame correspondence of images in a vertical direction as well as horizontal direction since the tiles need not destroy as many dependencies between blocks in a tile as if the blocks where organized in slices or slice groups. | 2012-07-19 |
20120183075 | PROCESSING OF VIDEO IMAGE - The present invention relates to a video image processor that is configured to compare a single frame included in the received video signal with a preceding processed frame so as to detect changes. In order to enable the video being compressed in as compact a format as possible the processor is configured to detect changes by dividing the pixels of a single frame into movement blocks and to detect the movement block as changed if in said movement block there is a given number of pixels whose colour value change as compared with the corresponding pixels of the preceding processed frame exceeds a predetermined threshold, to exchange the colour values of the pixels of the unchanged movement blocks in the frame under process for predetermined values and to generate a signal that indicates the changes. | 2012-07-19 |
20120183076 | HIGH LAYER SYNTAX FOR TEMPORAL SCALABILITY - Disclosed are techniques for temporal scalable video coding. By including a temporal_switching_point_flag and/or a temporal_nesting_flag into a normative part of the scalable bitstream, reference picture management in decoder can be simplified, and media-aware network elements and decoder can easily identify those pictures from which onward a higher temporal layer can be added. | 2012-07-19 |
20120183077 | NAL Unit Header - Disclosed are techniques for scalable, multiview, and multiple descriptive video coding using an improved Network Adaptation Layer (NAL) unit header. A NAL unit header can include a layer-id that can be a reference into a table of layer descriptions, which specify the properties of the layer. The improved NAL unit header can further include fields for reference picture management and to identify temproal layers. | 2012-07-19 |
20120183078 | FILTER ADAPTATION WITH DIRECTIONAL FEATURES FOR VIDEO/IMAGE CODING - A method for processing video information by a video encoder includes classifying video information based on at least one local directional feature of the video information to design multiple filters. The encoder encodes filter coefficients of the multiple filters. The multiple filters are designed with symmetric constraints on the filter coefficients configured according to the classification of the video information based on at least one local directional feature of the video information. The method also includes applying, by the encoder, the multiple directional filters to the video information. A decoder is configured to decode filter coefficients of multiple filters and apply the multiple filters to the video information. The decoder constructs, from decoded filter coefficients, multiple filters with symmetric constraints on the filter coefficients configured according to the classification of the video information based on at least one local directional feature of the video information. | 2012-07-19 |
20120183079 | IMAGE DECODING APPARATUS, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, AND IMAGE CODING METHOD - An image decoding apparatus ( | 2012-07-19 |