40th week of 2012 patent applcation highlights part 40 |
Patent application number | Title | Published |
20120250692 | METHOD AND APPARATUS FOR TEMPORAL-BASED FLOW DISTRIBUTION ACROSS MULTIPLE PACKET PROCESSORS - A method, apparatus and computer program product for temporal-based flow distribution across multiple packet processors is presented. A packet is received and a hash identifier (ID) is computed for the packet. The hash ID is used to index into a State Table and to retrieve a corresponding record. When a time credit field of the record is zero then the time credit field is set to a to a new value; a Packet Processing Engine (PE) whose First-In-First-Out buffer (FIFO) has the lowest fill level is selected; and a PE number field in the state table record is updated with the selected PE number. When the time credit field of the record is non-zero then the packet is sent to a PE based on the value stored in the record; and the time credit field in the record is decremented if the time credit field is greater than zero. | 2012-10-04 |
20120250693 | METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR PROVIDING ETHERNET VLAN CAPACITY REQUIREMENT ESTIMATION - A method, system, and computer program product for providing VLAN capacity requirement estimation is provided. The method includes receiving at a computing system a VLAN configuration file that specifies VLAN access ports, VLAN switches and VLAN trunks in a VLAN. A target access port identifier is received at the computing system from a requestor. A target trunk and target switch corresponding to the target access port are determined at the computing system. A bandwidth contribution of the target access port to the VLAN is calculated at the computing system. The calculating is based on a least contribution algorithm that reflects an impact of provisioning the target access port with respect to trunk capacity, and is responsive to the target bandwidth requirement, the target class of service and placement of the target port in the VLAN. The bandwidth contribution is then transmitted to the requestor. | 2012-10-04 |
20120250694 | CENTRALIZED TRAFFIC SHAPING FOR DATA NETWORKS - A communication system comprises a plurality of nodes and a switch having a plurality of ports, each port coupled to one of the plurality of nodes. At least one of the plurality of nodes is configured to transmit a first unregulated flow of frames associated with a first virtual link to a first port of the plurality of ports of the switch. The switch is configured to regulate the first unregulated flow of frames by buffering frames of the first unregulated flow in a first input queue associated with the first virtual link, applying traffic shaping parameters associated with the first virtual link to the frames in the first input queue associated with the first virtual link, and outputting the first regulated flow of frames to one or more output queues associated with one or more output ports based on the first virtual link. | 2012-10-04 |
20120250695 | HITLESS NODE INSERTION FOR ETHERNET NETWORKS - A novel and useful hitless node insertion mechanism for configuring a new node to be inserted into an Ethernet network. The mechanism comprises pre-configuring the new node into a partially configured state, disconnecting a network link where the new node is to be inserted and connecting the new node to at least one end of the disconnected link. All data traffic received from neighboring nodes is then blocked and fake signal failure (SF) messages are generated and sent if Ethernet Ring Protection (ERP) messages are detected. An in-band management port is then selected and a configuration from a Network Management System (NMS) is received. Once configuration of the said new node is complete, the new node is set to a fully configured state. | 2012-10-04 |
20120250696 | Soft Preemption For Minimizing Preemptions In A Network - In an embodiment, a method is disclosed for minimizing soft preemptions of LSPs. Upon receiving a reservation message for an LSP whose requested bandwidth that exceeds the available bandwidth of downstream links, a network node may select a set of LSPs for soft preemption and share the selection with other nodes along their paths, both upstream and downstream. By coordinating the selection of LSPs to soft-preempt among nodes on the path, fewer LSPs may require soft preemption, which may result in minimizing excessive network disruptions, and thus, allowing the network to function more efficiently. | 2012-10-04 |
20120250697 | INTER-CLUSTER COMMUNICATIONS TECHNIQUE FOR EVENT AND HEALTH STATUS COMMUNICATIONS - Communication between clusters of processing nodes is initiated by designating a link layer address and a target node name in a remote cluster. The link layer address is transmitted to the target node via a regular network transmission. The link layer address is stored locally in each cluster and the nodes in each cluster are signaled that a configuration change has been made, so that gateway nodes in the clusters can obtain the link layer address to use for subsequent communications with the other cluster, such as event notifications of node status changes. | 2012-10-04 |
20120250698 | Large Interconnect Fabrics - In one embodiment, a network switch includes multiple chips communicably coupled together and a buffered crossbar. Each chip is coupled to every other chip with two bi-directional serial channels and includes a slice of the buffered crossbar. One or more input ports, one or more output ports, and an input logic module are coupled to the plurality of chips, and the input logic module is configured to receive a packet of data, allocate the packet of data into one or more data fragments, and distribute the packet of data to the buffered crossbar. An output logic module is coupled to the chips and configured to retrieve the packet of data from the buffered crossbar, reconstruct the packet of data from the data fragments according to a gather scheme, and transmit the packet of data. | 2012-10-04 |
20120250699 | METHOD AND APPARATUS FOR TRANSMITTING AN OVERHEAD MESSAGE - The present disclosure discloses a method and an apparatus for transmitting an overload message. By detecting, after determining a latest transmit slot for an overhead message to be transmitted, whether there is an idle paging slot between a current slot and the latest transmit slot, the method transmits the overhead message to be transmitted in the idle paging slot or in the latest transmit slot, such that, when scheduling overhead messages, a paging scheduling module of the base station system not only can meet the requirement of transmitting each overhead message at least once in one overhead message period as required in CDMA2000 protocol, but also automatically schedule the next overhead message when there is an idle slot in the paging channel, thus making the best use of the idle slots of the paging channel and shortening the actual transmission period for overhead messages, without affecting the transmission of other messages in the paging channel. | 2012-10-04 |
20120250700 | METHOD, APPARATUS, AND SYSTEM FOR DATA TRANSMISSION - The present invention provides a method for locating a data frame. The method mainly includes: allocating a framing state machine to each byte of a data stream within a current clock cycle; respectively starting, by the framing state machines, hunting for data frames from respective corresponding bytes, and obtaining a plurality of data frame hunt results; and selecting one hunt result from the plurality of data frame hunt results according to a data frame hunt result within a previous clock cycle as a data frame hunt result within the current clock cycle. | 2012-10-04 |
20120250701 | UNDERWATER DATA TRANSFER SYSTEM - The present invention relates to a system that provides underwater data transfer to an underwater communications network operable to carry a high bandwidth multiplexed data stream. The cabled network includes at least one data access point having an access point electromagnetic transceiver; and at least one remote client system comprising a client electromagnetic transceiver. The at least one data access point transfers data between said cabled network and said client electromagnetic transceiver via one of inductive magnetic and electromagnetic signals carried through the water. | 2012-10-04 |
20120250702 | Method and device for identifying or converting data_coding and method and system for processing data_coding - The present disclosure discloses a method and device for identifying or converting data_coding, and a method and system for processing data_coding. By finding out a source data_coding adopted by information sent by a source account in communication protocols specified in the area to which it belongs and a target data_coding accepted and adopted by a target account based on preset data_coding information of a first account group and code conversion information of a second account group, the data_coding adopted by the sent information and the data_coding desired by the target account can be accurately determined, and a code conversion error is avoided. In addition, by pre-configuring code conversion information of each account and subsequently finding out the actually adopted data_coding based on finding mechanism, not only is the finding result accurate, but also the system is convenient to be extended and flexible to be configured. | 2012-10-04 |
20120250703 | COMMUNICATION DEVICES THAT COMMUNICATE USING FRAMES AND COMPUTER-READABLE MEDIA FOR CONTROLLING COMMUNICATION DEVICES - A communication device may include a reference maximum segment size (“MSS”) value acquisition device, a data length acquisition device, and a transmission device. The reference MSS value acquisition device may acquire a reference MSS value from a first device by executing a transmission control protocol communication with the first device. The data length acquisition device may acquire a data length value comprised in a user datagram protocol (“UDP”) header of a frame received by executing a UDP communication with the first device. The transmission device may generate a transmission frame and may transmit the transmission frame to a second device when executing a UDP communication with the second device. The reference MSS value may be an MSS of the first device. A size of the transmission frame may be based on a specific value determined utilizing the reference MSS value of the first device or utilizing the data length value. | 2012-10-04 |
20120250704 | NETWORK NODE, TIME SYNCHRONIZATION METHOD AND NETWORK SYSTEM - In order to select a synchronization signal higher in accuracy, thereby increasing the accuracy of the time synchronization, it is provided a network node for transferring data in a network, comprising: a network interface having a plurality of ports; a transfer control module; a time synchronizing module; a fluctuation measurement module; and a clock. The time synchronization module uses a received time synchronization packet to synchronize the clock. The fluctuation measurement module determines an accuracy of a time contained in the received time synchronization packet based on a result of comparison between the time contained in the received time synchronization packet and a time of the clock. | 2012-10-04 |
20120250705 | FIBER LASERS WITH DEVICES CAPABLE OF SUPPRESSING HIGH-ORDER MODE MIXING AND GENERATING HIGH QUALITY AND LOW NOISE LASER LIGHT - Techniques and devices for generating laser light that use large mode area fiber amplifiers and curved fiber sections to achieve desired operations in a fundamental fiber mode with high pulse quality and optical beam quality while reducing presence of high order fiber modes in continuous wave and pulsed laser devices. | 2012-10-04 |
20120250706 | TRANSVERSE LASER MODE SWITCHING | 2012-10-04 |
20120250707 | STABILIZATION OF PULSED MODE SEED LASERS - A programmable tailored laser pulse generator including a pulsed seed laser source, a laser amplifier, and an optical power amplifier produces high power tailored laser pulses shaped in response to a programmable analog tailored pulse signal applied to a seed laser (first embodiment) or an external modulator of continuous-wave seed laser output (second embodiment). The programmable analog tailored pulse signal is generated by combining multiple individually programmable analog pulses generated by a multi-channel signal generator. A bias applied to the pulsed seed laser source generates pre-lasing prior to producing a tailored laser pulse so that the seed laser source spectral line and line width stabilize within a narrow gain line width of a solid-state laser amplifier, thereby to impart pulse peak stability of the laser output. The tailored laser pulse generator allows for generating harmonics at shorter wavelengths and provides an economical, reliable laser source for a variety of micromachining applications. | 2012-10-04 |
20120250708 | LASER SYSTEM AND LASER LIGHT GENERATION METHOD - A laser system may include a master oscillator that outputs pulsed laser light, an amplification device that amplifies the pulsed laser light outputted from the master oscillator, and a controller that controls the master oscillator and the amplification device. The master oscillator may have a pumping laser that outputs pumping light, a seed laser that is oscillated by the pumping light, an amplifier that amplifies the pulsed laser light outputted by the seed laser using the pumping light, and at least one optical shutter disposed in the optical path between the seed laser and the amplifier. The controller may control the opening and closing of the optical shutter and discharging of the amplification device so that the amplification device discharges when the pulsed laser light that has passed through the optical shutter passes through the amplification device. | 2012-10-04 |
20120250709 | LASER SYSTEM AND LASER LIGHT GENERATION METHOD - A laser system in this disclosure may include: a master oscillator configured to output pulsed laser light, a coherence reduction optical system configured to reduce coherence of the pulsed laser light from the master oscillator, and a controller configured to control the coherence reduction optical system so that a speckle of the pulsed laser light varies. | 2012-10-04 |
20120250710 | LASER SYSTEM AND LASER LIGHT GENERATION METHOD - A laser system may include: a master oscillator configured to output pulsed laser light; an amplification device for amplifying the pulsed laser light from the master oscillator; a first timing detector configured to detect a first timing at which the master oscillator outputs the pulsed laser light; a second timing detector configured to detect a second timing at which the amplification device discharges; and a controller configured to, based on results of detection by the first timing detector and the second timing detector, control at least one of the first timing and the second timing so that the amplification device discharges when the pulsed laser light passes through a discharge space of the amplification device. | 2012-10-04 |
20120250711 | Optical Module - An optical module providing higher reliability during high-speed light modulation and a lower bit error rate when built into a transmitter (transceiver). An optical module contains a taper mirror for surface emission of output light, an optical modulator device, and an optical modulation drive circuit, and the optical modulator device and the optical modulation drive circuit are mounted at positions so as to enclose the taper mirror. | 2012-10-04 |
20120250712 | DIODE LASER - A diode laser is provided with wavelength stabilization and vertical collimation of the emitted radiation, which allows a small distance of the volume Bragg grating from the emitting surface, a small vertical diameter of the collimated beam and also compensation for manufacturing tolerances affecting the shape of the grating and the lens. The diode laser comprises an external frequency-selective element for wavelength stabilization of the laser radiation, wherein the external frequency-selective element comprises an entry surface facing the exit facet and an exit surface facing away from the exit facet and is designed as a volume Bragg grating; and wherein the external frequency-selective element is designed in such a manner that the divergence of the radiation emitting from the exit facet is reduced during passage through the external frequency-selective element. | 2012-10-04 |
20120250713 | CORRECTION CIRCUIT, DRIVING CIRCUIT, LIGHT EMITTING APPARATUS, AND METHOD OF CORRECTING ELECTRIC CURRENT PULSE WAVEFORM - A correction circuit includes: a temperature rise derivation section which derives a temperature rise amount of a first channel of a multi-channel surface-emitting laser array due to the heating by at least one or a plurality of second channels adjacent to the first channel out of all channels included in the laser array; and a first correction section which corrects a waveform of an electric current pulse which is output from an electric current source capable of independently driving the laser array for each channel, to the first channel, based on the temperature rise amount derived by the temperature rise derivation section. | 2012-10-04 |
20120250714 | SEMICONDUCTOR LIGHT EMITTING DEVICE, SEMICONDUCTOR LIGHT EMITTING APPARATUS, AND METHOD FOR MANUFACTURING SEMICONDUCTOR LIGHT EMITTING DEVICE - According to one embodiment, a semiconductor light emitting device includes a first semiconductor layer and a laser resonator. The first semiconductor layer includes a first portion and a second portion juxtaposed with the first portion. The laser resonator is provided on the first portion and has a ring-shaped resonator structure circled along a major surface of the first semiconductor layer. The second portion guides light emitted from the laser resonator. | 2012-10-04 |
20120250715 | Optoelectronic Semiconductor Component - In at least one embodiment of the optoelectronic semiconductor component ( | 2012-10-04 |
20120250716 | Flexible Microcavity Structure Made Of Organic Materials Using Spin-Coating Technique And Methods Of Making - A flexible microcavity structure made of organic materials using spin-coating technique for allowing large area structures using a roll-to-roll process. The structure includes at least one first polymer layer, at least one second polymer layer, and a cavity layer. The cavity layer has quantum dots embedded therein fir realizing an electrically pumped microcavity emitter. The at least one first polymer layer alternates with the at least one second polymer layer, respectively, to form a pair of distributed Bragg reflecting mirrors. The cavity layer is sandwiched between the pair of distributed Bragg reflecting mirrors. | 2012-10-04 |
20120250717 | EDGE EMITTING SEMICONDUCTOR LASER - An edge emitting semiconductor laser includes a semiconductor body including a waveguide region, wherein the waveguide region includes a first waveguide layer, a second waveguide layer and an active layer arranged between the first waveguide layer and the second waveguide layer and generates laser radiation, the waveguide region is arranged between a first cladding layer and a second cladding layer disposed downstream of the waveguide region in a growth direction of the semiconductor body, a phase structure for selection of lateral modes of the laser radiation emitted by the active layer is formed in the semiconductor body, wherein the phase structure comprises at least one cutout extending from a top side of the semiconductor body into the second cladding layer, at least one first intermediate layer comprising a semiconductor material different from the semiconductor material of the second cladding layer is embedded into the second cladding layer, and the cutout extends from a top side of the semiconductor body at least partly into the first intermediate layer. | 2012-10-04 |
20120250718 | MULTI-WAVELENGTH SEMICONDUCTOR LASER DEVICE - A multi-wavelength semiconductor laser device includes: first and second device sections monolithically formed on a substrate; and a rear end face film formed together on a rear end face of each of the first and second device sections. The first device section is a light-emitting device section having an oscillation wavelength of λ | 2012-10-04 |
20120250719 | TRANSITION-METAL-DOPED THIN-DISK LASER - A laser includes a Ti:sapphire gain-medium in the form of a thin-disk. The thin-disk gain-medium is optically pumped by pump-radiation pulses having a wavelength in the green region of the electromagnetic spectrum. The pump-radiation pulses have a duration less than twice the excited-state lifetime of the gain-medium. | 2012-10-04 |
20120250720 | AMPLIFICATION OF LONG-RANGE SURFACE PLASMONS WITH REDUCED NOISE - An optical amplifier suitable for coherently amplifying surface plasmon-polariton waves with high gain and low noise over visible and infrared wavelengths. The optical amplifier is comprised of a thin strip of material having a complex permittivity with a negative real part, in contact on at least one side with an optical gain medium, where the strip has finite width and thickness such that optical radiation couples to the strip and propagates along its length as a surface plasmon-polariton wave. The surface plasmon-polariton amplifier can also be incorporated into a resonant cavity to form a plasmon-polariton laser. | 2012-10-04 |
20120250721 | TEMPERATURE MEASUREMENT CIRCUIT AND TEMPERATURE MEASUREMENT METHOD - A temperature measurement circuit includes a sensing unit and a temperature translation unit. The sensing unit is arranged for generating a positive temperature coefficient characteristic and a negative temperature coefficient characteristic according to a temperature. The temperature translation unit is coupled to the sensing unit, and is arranged for generating a measured temperature according to the positive temperature coefficient characteristic and the negative temperature coefficient characteristic. | 2012-10-04 |
20120250722 | Calibrated Fire Detection Cable - A system and method for providing greatly improved linear heat detection using fiber optic distributed temperature systems (DTS). The invention makes use of correction algorithms based on proportional-integral-derivative notions that anticipate exterior temperature increases based on the rate of measured temperature changes. | 2012-10-04 |
20120250723 | System And Method For Thermal Analysis - A system for thermal analysis, including a sample crucible on a sample side and a reference crucible on a reference side in a measurement chamber, where the sample cup and the reference cup are each provided with a Peltier system for adjusting the temperature and/or for detecting the temperature. | 2012-10-04 |
20120250724 | TEMPERATURE SENSITIVE BODY, OPTICAL TEMPERATURE SENSOR, TEMPERATURE MEASUREMENT DEVICE, AND HEAT FLUX MEASUREMENT - A temperature sensitive body 102 used as a target of an optical temperature measurement, includes an inclusion 202 having an optical property related to an irradiated light varies with a change in temperature, and a light-transmissive outer shell member | 2012-10-04 |
20120250725 | MEASURING INSERT FOR TEMPERATURE MEASUREMENT - A temperature measuring insert composed of ceramic or sintered materials of magnesium oxide or aluminum oxide accommodates, on its end facing the measured medium, temperature sensor elements, such as thermocouples and temperature measuring resistors, as a measuring tip, installable singly or with others in metal or ceramic protective tubes. The site of the measuring tip, a water adsorption behavior differing from the remaining measuring insert material is present, in order to protect the temperature sensor elements in the case of rapid process related temperature changes, in order to prevent, in the case of heating, effects due to superheated steam. A solution is provided by features including that the measuring insert has a jacketing comprising densified desiccant coatings, which have a gradient with a continuously or stepwise adapted water adsorptive behavior in the direction of the temperature sensor element, wherein, for example, a decreasing water adsorption is realized according to the invention by means of different fractions of modified and unmodified adsorbents as well as hydrophobic, super hydrophobic or hydrophobized ceramic parts. | 2012-10-04 |
20120250726 | MICRO-THERMOCOUPLE - Improved, high-strength micro-thermocouples ( | 2012-10-04 |
20120250727 | TEMPERATURE SENSOR WITH CARRIER PLATE - A temperature sensor ( | 2012-10-04 |
20120250728 | Recovery and Synchronization for Spread Spectrum Modulated Clock - Embodiments allow for the use of the SS modulation technique (and thus for significant reduction of EMI due to clock transmission) in scenarios involving tight synchronization requirements between two devices. In particular, embodiments can be used in high-speed communication networks (e.g., high-speed Ethernet) where a clock signal embedded in the data stream at the transmitter and recovered from the data stream at the receiver is the only source for synchronization between the transmitter and the receiver (i.e., no other synchronization channel available). Embodiments are also especially useful in communication systems utilizing echo cancellers. | 2012-10-04 |
20120250729 | METHOD AND APPARATUS FOR MULTIPLE ACCESS OVER A COMMUNICATION CHANNEL - A communication technique based on direct sequence spread spectrum signaling employs, for all users sharing an access channel, a single spreading code that has a duration sufficiently longer than the symbol length that the likelihood of confusion between users is minimized if not eliminated. The length of the spreading code is sufficiently long that contention events can occur only when two bursts occur at the receiver within one chip time of one another. | 2012-10-04 |
20120250730 | INTEGRATED CIRCUIT FOR RESPONSE SIGNAL SPREADING - A wireless communication apparatus capable of minimizing the degradation of the separation characteristic of response signals to be code-multiplexed. In the apparatus, a control part ( | 2012-10-04 |
20120250731 | SYSTEMS AND METHODS FOR MONITORING A WIRELESS NETWORK - Systems, methods, and devices to enable monitoring of wireless networks are described herein. In some aspects, a low power receiver or a receiver operating in a low power mode scans for signals with a moderate or low duty cycle. If a signal identifying a device or user of the receiver, or a signal indicating that there will be a subsequent data communication, is received, a high power receiver or a receiver operating in a high power mode is activated to receive data communications. | 2012-10-04 |
20120250732 | Technique for Searching for a Preamble Signal in a Spread Spectrum Signal Using a Fast Hadamard Transform - In one embodiment, a method for demodulating and searching for a preamble signal containing a complex phasor signal is disclosed. The complex phasor is demodulated using a phasor-rotated fast transformer. A received signal is correlated with a spreading code to produce a correlated signal. The correlated signal is coherently accumulated to produce a coherently accumulated signal. A first phasor-rotated signal transformation is performed on a real component of the coherently accumulated signal, and a second phasor-rotated signal transformation is performed on an imaginary component of the coherently accumulated signal. Finally, the signal power of the transformed real and imaginary components of the coherently accumulated signal is determined. | 2012-10-04 |
20120250733 | METHOD AND APPARATUS FOR RAPID ACQUISITIONS OF GPS SIGNALS IN SPACE APPLICATIONS - A global positioning system (GPS) receiver that is configured to rapidly acquire GPS signals in space applications and a method for rapidly acquiring GPS signals in space applications is disclosed. In an embodiment, the GPS receiver includes, but is not limited to, a GPS signal acquisition component comprising a time domain correlation module. The GPS signal acquisition component is adapted to acquire a GPS signal by receiving data from the GPS signal and processing the data to detect the GPS signal. | 2012-10-04 |
20120250734 | DATA OUTPUT CIRCUIT OF SEMICONDUCTOR APPARATUS - A data output circuit of a semiconductor apparatus includes a clock skew compensation repeater configured to control a delay amount of a clock in response to skew compensation codes and output a data synchronization clock; a mismatch compensation driver configured to synchronize internal data with the data synchronization clock and output the internal data synchronized with the data synchronization clock by controlling a transition timing of the internal data according to mismatch compensation codes; and a data output driver configured to generate output data in response to an output of the mismatch compensation driver. | 2012-10-04 |
20120250735 | X2 Form Factor 10GBASE-T Transceiver Module - An apparatus includes a transceiver device mounted on a printed circuit board and configured to transmit and receive signals that comply with a 10GBASE-T standard. A pluggable connector is disposed at one end of the printed circuit board and is coupled to the transceiver device. The pluggable connector is configured to plug into an X2 system port to convey signals that comply with the 10GBASE-T standard between the transceiver device and a system device. A port device is disposed at an opposing end of the printed circuit board and is coupled to the transceiver device. The port device is configured to receive a transmission cable to convey signals that comply with the 10GBASE-T standard between the transceiver device and a network device. | 2012-10-04 |
20120250736 | SYSTEM, METHOD AND APPARATUS FOR TAIL BITING CONVOLUTIONAL CODE DECODING - Techniques to decode tail biting convolutional code are disclosed. A plurality of sets for a trellis may be determined. Each set may include a first stage and a second stage of the trellis. Path metrics for each state in a set may be determined when the first stage and the second stage have a same state. The path metrics may be compared to determine a state with a minimum path metric. Bits from the state with the minimum path metric may be output. Other embodiments are described and claimed. | 2012-10-04 |
20120250737 | Radio Apparatus - A radio apparatus comprising: a first transceiver means arranged to receive and transmit packets according to a first protocol; a second transceiver means arranged to receive or transmit packets according to a second, different protocol, the second transceiver means being located such that interference is possible between packets of the first and second protocols; analysing means for determining a probability that a packet to be transmitted or received by the first transceiver means does not contain only redundant information; and decision means for making a decision based on the determined probability as to whether or not the packet should be respectively transmitted or received. The first transceiver means is arranged to respectively transmit or receive the packet or not according to the decision. | 2012-10-04 |
20120250738 | RADIO APPARATUS, RADIO APPARATUS CONTROLLER, AND SYNCHRONIZATION ESTABLISHING METHOD - A radio apparatus includes: first and second reception units to receive first and second signals from first and second radio apparatus controllers, respectively; first and second synchronous clock generation units to generate first and second recovery clocks from clock components included in the first and second signals received by the reception units, respectively; a clock synchronization detection unit to detect whether or not the second recovery clock is synchronous with the first recovery clock; a code selection unit to select a code indicating the synchronous state according to a detection result of the synchronization detection unit; a signal processing unit of generate a third signal to which the code selected by the code selection unit is added and which is synchronous with the first recovery clock; and a transmission unit to transmit the third signal generated by the signal processing unit to the second radio apparatus controller. | 2012-10-04 |
20120250739 | TRANSMISSION DEVICE AND TRANSMISSION METHOD - A transmission device includes a receiver receiving a signal transmission frame from a network, where a client signal is mapped to the signal transmission frame; a separator separating the client signal from the signal transmission frame; a phase synchronizer generating a clock based on a frequency adjustment information set of the client information included in the signal transmission frame; a transmitter transmitting the client signal to a client transmission path by using the clock generated by the phase synchronizer; a memory storing the frequency adjustment information set included in the signal transmission frame in response to receiving the signal transmission frame from the network by the receiver; and a switch controller causing the phase synchronizer to generate a clock based on the frequency adjustment information set stored in the memory in response to not receiving the signal transmission frame from the network by the receiver. | 2012-10-04 |
20120250740 | OFDM SIGNAL PROCESSING IN A BASE TRANSCEIVER SYSTEM - A method and apparatus provides OFDM signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies OFDM cyclic prefix removal and OFDM frequency transformation of the baseband signal samples followed by frequency domain compression of the baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor applies frequency domain decompression to the compressed coefficients prior to further signal processing. For the downlink, the RF unit performs frequency domain decompression of the compressed coefficients and applies OFDM inverse frequency transformation of the decompressed coefficients and OFDM cyclic prefix insertion prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna. | 2012-10-04 |
20120250741 | METHOD FOR FREQUENCY OFFSET ESTIMATION AND AUTOMATIC FREQUENCY CONTROL FOR FILTERED SIGNAL WITH DESTROYED PHASE INFORMATION AND SIGNAL TRANSCEIVER - The invention provides a method for frequency offset estimation according to a filtered signal with destroyed phase information. In one embodiment, a filter filters an original signal according to a series of first filter coefficients to obtain a first-channel component of the filtered signal, and filters the original signal according to a series of second filter coefficients to obtain a second-channel component of the filtered signal. A series of third filter coefficients are first derived from the first filter coefficients. The original signal is then filtered according to the third filter coefficients to obtain a reference signal. A first frequency offset value is estimated according to the first-channel component of the filtered signal and the reference signal, wherein the first-channel component of the filtered signal is a first-channel component of an artificial signal, and the reference signal is a second-channel component of the artificial signal. | 2012-10-04 |
20120250742 | Uplink Transmission Mode Switching in Single User Multiple-Input Communication - There is provided switching of an uplink transmission mode. The switching includes manipulating an uplink transmission method and precoding of a demodulation reference signal. The switching may also include utilizing control signaling in indicating to a user terminal that the mode of uplink transmission is to be switched, for example. | 2012-10-04 |
20120250743 | Spatial Mode Adaptation at the Cell Edge Using Interferer Spatial Correlation - A system and method is proposed for adapting the spatial transmission strategy in a cellular MIMO (multiple input multiple output) communication system for the downlink. Spatial mode adaptation, the choice of multiplexing, transmit diversity, number of streams, space-time code family, and the like are performed slowly based on side information from other base stations. Base stations exchange their transmission plans with neighboring base stations and broadcast this information to active users. Each user measures its susceptibility to spatial interference and returns this information to the base station. The base station then schedules active users according to the decisions made in interfering base stations and the preferred transmission strategies of its own users. | 2012-10-04 |
20120250744 | METHOD AND APPARATUS FOR OPERATING A DIGITAL SUBSCRIBER LINE ARRANGEMENT - A digital subscriber line arrangement includes a downstream modem, an upstream modem and a copper pair connection between the modems. Each modem includes electrical length estimation function code means which causes the respective modem to measure the attenuation of signals transmitted by the other modem at a plurality of different frequencies, and to combine these measurements, or functions thereof, together to form a combined attenuation measure and to use this combined measure to form an electrical length estimation, KL0bis. The downstream modem is operable to transmit its electrical length estimation to the upstream modem, and the upstream modem is operable to generate a definitive electrical length estimation in dependence upon both the received estimation from the downstream modem and the estimation made by the upstream modem. Having generated a definitive electrical length estimation, the upstream modem is operable to transmit this to the downstream modem. Finally, the downstream modem includes Upstream Power Back Off mask generation function code means which causes the downstream modem to use the received definitive electrical length estimation to generate an upstream power back off mask for use in controlling the amount of power used when transmitting upstream signals over the copper pair connection to the upstream modem in one or more upstream transmission bands. | 2012-10-04 |
20120250745 | SYSTEM AND METHOD FOR RF INTERFERENCE MITIGATION THROUGH MEMORY CLOCK FREQUENCY CONTROL - Systems and methods are provided to prevent or mitigate noise interference resulting from the operation of a memory device, such as a microSD card that is operating in proximity to a radio of a communications device. Noise interference is managed by shifting the rate at which the microSD card is accessed so that the resulting noise does not match or interfere with the particular radio channel(s) being utilized by radio at the time of the microSD card access. That is, a determination/knowledge of the radio receive channels being utilized can be leveraged to intelligently control the clock frequency of the microSD card, such that the harmonics of the microSD card clock do not result in interfering noise at the particular radio receive frequencies. | 2012-10-04 |
20120250746 | TRANSITION INTERVAL CODING FOR SERIAL COMMUNICATION - A one-wire transmission protocol utilizes transition interval coding in which a value of a transmitted symbol is determined by comparing an interval length between the voltage transition associated with the transmitted symbol and a prior voltage transition on the communication link, to a threshold transition interval provided to the receiving device during the transmission sequence that includes the transmitted symbol. If the interval length of the symbol is below the transition interval threshold, the symbol is determined to be a first value and if the interval length of the symbol is above the transition interval threshold, the symbol is determined to be a second value. The transition interval threshold is provided in a start sequence that includes at least two transitions. The threshold transition interval width is based on one or more transition intervals determined during the start sequence. | 2012-10-04 |
20120250747 | TRANSMITTER AND COMMUNICATION APPARATUS - Provided is a transmitter which is small in size and operates with high efficiency and compensates a delay error with high accuracy. A signal generation section | 2012-10-04 |
20120250748 | APPARATUS AND METHOD FOR SAMPLING AND RECONSTRUCTION OF WIDE BANDWIDTH SIGNALS BELOW NYQUIST RATE - A method and system of reconstructing data signals from one of incomplete measurements comprising a receiver for receiving data signals, an ADC system operatively connected to the receiver that digitizes the received data signal at a slower rate than the Nyquist rate to obtain sparse measurements; first and second dictionaries comprising a plurality of time shifted responses recovered from the data signal; the first dictionary comprising time shifted versions of the previously observed data signals which are sampled at or above the Nyquist minimum sample rate; the second dictionary comprising time shifted versions are sampled below the Nyquist minimum, and at least one processor for reconstruction of the waveform signals by transforming the sub-Nyquist digitized output using the first and second dictionaries to produce the data signal. | 2012-10-04 |
20120250749 | PAPR (PEAK-TO-AVERAGE POWER RATIO) DETERMINING DEVICE AND COMMUNICATION DEVICE - A PAPR determining device includes a detecting unit and a PAPR determining unit. The detecting unit detects a predetermined value's changes, which is a cause of changes in a saturation power of a power amplifier. When the detecting unit detects any change in the predetermined value, the PAPR determining unit determines a PAPR value that corresponds to the saturation power of the power amplifier. | 2012-10-04 |
20120250750 | METHOD AND SYSTEM FOR RELIABLE CFO AND STO ESTIMATION IN THE PRESENCE OF TUNER INDUCED IMPAIRMENT - A system and method for reducing implementation complexity for estimation of a Carrier Frequency Offset (CFO) and a Symbol Timing Offset (STO) for an input signal for spectrally shaped multiple communication standards. The system is implemented by replacing multiplier with shifters. The system includes a CFO estimation block, a STO estimation block, and a band extraction block that extracts a lower band edge and an upper band edge of the input signal. The STO estimation block includes (i) a sample error generation block that computes a sampling timing error value, and (ii) a Phase Lock Loop block that estimates a frequency error and a phase error corresponding to the sampling timing error value. The CFO estimation block includes (i) a carrier offset error generation block that generates a carrier offset error value, and (ii) a leaky average block for performing a filter operation. | 2012-10-04 |
20120250751 | Variable Size Codebook for MIMO System - In a method of selecting a codebook for precoding a wireless transmission signal, a characteristic of a wireless communication channel is measured, and a codebook size is selected using (i) an expected throughput for each of a plurality of different codebook sizes given the measured characteristic of the wireless communication channel, and (ii) channel overhead associated with each of the plurality of different codebook sizes. Based on matrix selection criteria, a best matrix is selected from a codebook of the selected codebook size, and an indicator of the selected matrix is transmitted. | 2012-10-04 |
20120250752 | Grid Event Detection - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting grid events. In one aspect, a method includes receiving signal characteristic data that specify signal characteristic values for signals that are received over each of a plurality of communications channels of a power line communications network. A determination is made that the signal characteristic values for the signals that are received over at least one of the communications channels are outside of a baseline signal value range. An endpoint that communicates over the at least one communications channel is identified, and a determination is made that a set of the signal characteristic values for the identified endpoint matches one of a plurality a grid event signatures for the identified endpoint. Data that identify the endpoint and a particular grid event that is represented by the matched grid event signature are provided. | 2012-10-04 |
20120250753 | CROSSING ISI CANCELLATION - An apparatus comprising an inter symbol interference (ISI) cancellation circuit and a detector circuit. The inter symbol interference (ISI) cancellation circuit may be configured to minimize ISI at data sampling and crossing sampling points in a symbol interval of an input signal. The detector circuit may be configured to generate data samples and crossing samples at the data sampling and crossing sampling points in the symbol interval of the input signal. | 2012-10-04 |
20120250754 | EFFICIENCY-OPTIMIZED CODING FOR HIGH FREQUENCY POWER AMPLIFIERS - The invention introduces a coding unit for a high frequency power amplifier which encodes a useful signal into a binary signal so that a better energy conversion efficiency is achieved—even at an output power below the maximum output power of the high frequency power amplifier. The coding unit has a polar modulation unit, a pulse width modulation unit and a multiplier. Therein, the polar modulation unit has an input connected to an input of the coding unit and is designed to represent an input signal applied to the input of the coding unit as an envelope signal and a binary phasing signal. The pulse width modulation unit is connected to a first output of the polar modulation unit for the envelope signal and is designed to convert the envelope signal into a pulse-width modulated envelope signal and to output it to a first input of the multiplier. | 2012-10-04 |
20120250755 | VIDEO ENCODING SYSTEM AND METHOD - A video encoding system is disclosed to process a video file into one or more desired formats. The video file may have portions processed in parallel. The video encoding system may include a scalable computing resource. The scalable computing resource may be provided by a cloud computing platform. | 2012-10-04 |
20120250756 | COMMUNICATION APPARATUS AND CONTROL METHOD FOR COMMUNICATION APPARATUS - A signaling unit of a display terminal establishes communication with a content server, video communication terminal, and PC server through a communication unit, and transmits/receives image data compressed by MPEG2, MPEG4, and JPEG. A media control unit switches compression schemes for decoding in a media processing unit on the basis of the received image data. The media processing unit performs decoding processing including inverse orthogonal transformation processing and dequantization processing in accordance with the switched compression scheme. At this time, a single processing circuit performs inverse orthogonal transformation processing and dequantization processing. | 2012-10-04 |
20120250757 | POLYMORPHIC CODEC SYSTEM AND METHOD - An input module obtains a media signal to be communicated to a destination system, after which an identification module identifies a plurality of segments within the media signal. A codec includes a selection module that automatically selects different compression methods to respectively compress at least two of the segments. The compression methods are automatically selected to produce a highest compression quality for the respective segments according to a set of criteria without exceeding a target data rate. A compression module within the codec then compresses the segments using the automatically-selected compression methods, after which an output module delivers the compressed segments to the destination system with an indication of which compression method was used to compress each segment. | 2012-10-04 |
20120250758 | METHOD AND APPARATUS FOR FRAME MEMORY COMPRESSION - A method for frame memory compression divides each of a plurality of image frames in a frame memory into a plurality of blocks for taking a block as a compression unit. It quantizes a plurality of pixel values inside the block according to a predefined parameter, thereby generating a quantized block and a plurality of removed bits from the binary representation of the plurality of pixel values. A predictor is used to produce a residual block for the quantized block. A variable length encoder takes the residual block as an input and produces a coded bitstream. A packing unit is used to take the coded bitstream and the number of removed bits generated by the quantizer as inputs, so as to produce an entire codeword sequence of the block that meets a target bit rate by using a structure called group of blocks (GOB) to flexibly share available spaces of the blocks in the same GOB. | 2012-10-04 |
20120250759 | Apparatus and Method for Generating a Coded Video Sequence and for Decoding a Coded Video Sequence by Using an Intermediate Layer Residual Value Prediction - A video coder performs a motion-compensated prediction both in the base layer and in an enhancement layer to determine motion data of the enhancement layer by using the motion data from the base layer and/or to predict sequences of residual error pictures after the motion-compensated prediction in the enhancement layer by using sequences of residual error pictures from the base layer via an intermediate layer predictor. On the decoder side, an intermediate layer combiner is used for canceling this intermediate layer prediction. Thereby, the data rate is improved compared to scalability schemes without intermediate layer prediction with the same picture quality. | 2012-10-04 |
20120250760 | Apparatus and Method for Generating a Coded Video Sequence and for Decoding a Coded Video Sequence by Using an Intermediate Layer Residual Value Prediction - A video coder performs a motion-compensated prediction both in the base layer and in an enhancement layer to determine motion data of the enhancement layer by using the motion data from the base layer and/or to predict sequences of residual error pictures after the motion-compensated prediction in the enhancement layer by using sequences of residual error pictures from the base layer via an intermediate layer predictor. On the decoder side, an intermediate layer combiner is used for canceling this intermediate layer prediction. Thereby, the data rate is improved compared to scalability schemes without intermediate layer prediction with the same picture quality. | 2012-10-04 |
20120250761 | MULTI-PASS VIDEO ENCODING - Some embodiments of the invention provide a multi-pass encoding method that encodes several images (e.g., several frames of a video sequence). The method iteratively performs an encoding operation that encodes these images. The encoding operation is based on a nominal quantization parameter, which the method uses to compute quantization parameters for the images. During several different iterations of the encoding operation, the method uses several different nominal quantization parameters. The method stops its iterations when it reaches a terminating criterion (e.g., it identifies an acceptable encoding of the images). | 2012-10-04 |
20120250762 | SYSTEM AND METHOD FOR IMPLEMENTATION OF DYNAMIC ENCODING RATES FOR MOBILE DEVICES - There is disclosed a system and method for transmission of data signals from a mobile device to a network. In an embodiment, the method comprises encoding video data at a first encoding rate into a plurality of video frames using a first encoding module; encoding video data at a second encoding rate into a plurality of video frames using a second encoding module; detecting a change in the availability of wireless bandwidth in the network; and switching a selector to retrieve frames from either the first encoding module or the second encoding module for transmission in dependence upon the available wireless bandwidth. The encoding rate of whichever one of the first encoding module and the second encoding module is currently not selected is successively increased or decreased, and a selector is switched to retrieve frames from either the first encoding module or the second encoding module. | 2012-10-04 |
20120250763 | METHOD AND APPARATUS FOR PROVIDING COMPLEXITY BALANCED ENTROPY CODING - A method, apparatus and computer program product are provided to enable the provision of efficient processing in the area of video coding and decoding by employing complexity balanced entropy coding in order to provide a high level of capability with respect to video coding and decoding in a cost effective manner. A method includes categorizing a plurality of syntax elements of video content into first and second categories based on a frequency of occurrence of the syntax elements in the video content. The method also entropy codes symbols that correspond to the first category of syntax elements and that have been subjected to a context update. Further, the method entropy codes symbols that correspond to the second category of syntax elements and that have bypassed context updating. A corresponding apparatus and computer program product are also provided. | 2012-10-04 |
20120250764 | PROCESS FOR CODING VIDEO DATA OF A SEQUENCE OF IMAGES - The process comprising splitting of an image into blocks, intra coding of a current block using spatial prediction based on a matching pursuit algorithm selecting, from a dictionary of atoms, the atom the most correlated with a causal neighborhood of the current block, is characterized in that it performs the following steps: determination of the two dimensional shift between the causal neighborhood and the selected atom, generation of at least, a new phased atom taking into account the values of the two dimensional spatial shift, use of this new atom for intra prediction, according to the matching pursuit algorithm, if better correlated than the selected one. Application to video data compression. | 2012-10-04 |
20120250765 | Method and Arrangement for Video Coding - Methods and arrangements in video encoding and decoding entities. The methods and arrangements relate to the joint encoding of reference information associated with encoded video. The method and arrangement in a decoding entity relate to obtaining ( | 2012-10-04 |
20120250766 | Method and Arrangement for Video Coding - Methods and arrangements in video encoding and decoding entities. The methods and arrangements involve determining ( | 2012-10-04 |
20120250767 | METHOD AND APPARATUS FOR BI-DIRECTIONAL PREDICTION WITHIN P-SLICES - Method and apparatuses are provided to enable bi-directional prediction (or bi-prediction) within P slices. A bi-predicted P slice is introduced herein as a new slice type in addition to existing I, P and B slices. A benefit of the new bi-predicted P slice is that it enables a video encoder to support temporal scalability without the need to use B pictures. Bi-predicted P slices enable the definition of a hierarchical GOP structure, which is a common method to allow temporal scalability in a video encoder. Another advantage of bi-predicted P slices is that it can improve coding efficiency over uni-directional P slices for some particular video content frames. | 2012-10-04 |
20120250768 | VIDEO DECODING SWITCHABLE BETWEEN TWO MODES - Video decoder apparatus and method, for decoding a motion-compensated transform-coded video stream. The apparatus has: a first mode in which it is operable to decode the video stream at a first resolution, and wherein a motion-compensation step of the decoding is performed in the image-domain. It also has a second mode in which it is operable to decode the video stream at a second resolution, and wherein at least one motion-compensation step is performed in the transform-domain. The decoder is adapted to switch between the two modes while decoding the video stream. | 2012-10-04 |
20120250769 | HYBRID VIDEO CODING - A further coding efficiency increase is achieved by, in hybrid video coding, additionally predicting the residual signal of a current frame by motion-compensated prediction using a reference residual signal of a previous frame. In other words, in order to further reduce the energy of the final residual signal, i.e. the one finally transmitted, and thus increase the coding efficiency, it is proposed to additionally predict the residual signal by motion-compensated prediction using the reconstructed residual signals of previously coded frames. | 2012-10-04 |
20120250770 | MOVING PICTURE CODING METHOD AND A MOVING PICTURE DECODING METHOD - A moving picture coding apparatus includes a motion estimation unit ( | 2012-10-04 |
20120250771 | IMAGE PROCESSING APPARATUS AND METHOD AS WELL AS PROGRAM - An image processing apparatus and method that can be applied to an image encoding apparatus that carries out encoding in accordance with, for example, a H.264/AVC method. A high-symmetry interpolation filter of variable filter coefficients has a number of pixels, to which symmetry determined in advance is applied, greater than that of a low-symmetry interpolation filter. The high-symmetry interpolation filter carries out a filter process for a reference image from a frame memory using filter coefficients calculated by a high-symmetry filter coefficient calculation portion and outputs the reference image after the variable filter process to a selector. The selector selects, when a slice of a processing object is a B slice, the reference image after the variable filter from the high-symmetry interpolation filter and outputs the selected image to a motion prediction second and a motion compensation portion under control of a control part. | 2012-10-04 |
20120250772 | MULTI-THREADED IMPLEMENTATIONS OF DEBLOCK FILTERING - Multi-threaded implementations of deblock filtering improve encoding and/or decoding efficiency. For example, a video encoder or decoder partitions a video picture into multiple segments. The encoder/decoder selects between multiple different patterns for splitting operations of deblock filtering into multiple passes. The encoder/decoder organizes the deblock filtering as multiple tasks, where a given task includes the operations of one of the passes for one of the segments. The encoder/decoder then performs the tasks with multiple threads. The performance of the tasks is constrained by task dependencies which, in general, are based at least in part on which lines of the picture are in the respective segments and which deblock filtering operations are in the respective passes. The task dependencies can include a cross-pass, cross-segment dependency between a given pass of a given segment and an adjacent pass of an adjacent segment. | 2012-10-04 |
20120250773 | COMBINED REFERENCE PICTURE LIST CONSTRUCTION AND MAPPING - The example techniques of this disclosure are directed to default construction techniques for the construction of a combined reference picture list, and default mapping techniques for the combined reference picture list. In some examples, a video coder may construct first and second reference picture lists from frame number values, and construct the combined reference picture list from the frame number values of the first and second reference picture lists. In some examples, a video coder may construct first and second reference picture lists from picture order count (POC) values, and construct the combined reference picture list from the POC values of the first and second reference picture lists. In some examples, a video coder may construct a combined reference picture list from received information for the construction, and map the pictures of the combined reference picture list to one of a first or second reference picture list. | 2012-10-04 |
20120250774 | APPARATUS AND METHOD FOR CODING AN INFORMATION SIGNAL INTO A DATA STREAM, CONVERTING THE DATA STREAM AND DECODING THE DATA STREAM - More customization and adaptation of coded data streams may be achieved by processing the information signal such that the various syntax structures obtained by pre-coding the information signal are placed into logical data packets, each of which being associated with a specific data packet type, and by defining a predetermined order of data packet types within one access unit. The consecutive access units may correspond to different time portions of the information signal. By defining the predetermined order it is possible, at decoder's side, to detect the borders between successive access units even when removable data packets are removed from the data stream between data stream source and decoder without incorporating any hints into the datastream. Therefore, decoders surely detect the access unit beginnings and endings and are not liable to buffer overflow. | 2012-10-04 |
20120250775 | TRANSMITTER, RECEIVER, METHOD FOR TRANSMITTING AND METHOD FOR RECEIVING - According to an embodiment, a transmitter is described comprising an input configured to receive a plurality of symbols to be transmitted and a timing circuit configured to associate each symbol with a symbol transmission period of a predefined sequence of symbol transmission periods, wherein the symbol transmission periods of the sequence of symbol transmission periods are at least partially different. | 2012-10-04 |
20120250776 | TRANSMISSION CONTROLLING METHOD, SENDER APPARATUS AND RECEIVER APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - A transmission controlling method for a wireless communication system wherein a plurality of data blocks can be transmitted from a sender apparatus having a plurality of sending antennas to a receiver apparatus, the transmission controlling method including on the sender apparatus, sending process information which prevent plurality of data blocks from competing to the receiver apparatus with a control channel; and on the receiver apparatus, combining, based on the process information, the data block received already and a re-sent data block. | 2012-10-04 |
20120250777 | DATA PROCESSING APPARATUS AND METHOD - A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit. | 2012-10-04 |
20120250778 | MODULATION SCHEME FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEMS OR THE LIKE - Briefly, in accordance with one embodiment of the invention, bit and power loading may be utilized to select a modulation rate and subcarrier power scaling based on channel state information. As a result, a higher data rate may be utilized for a given signal-to-noise ratio while maintaining a constant bit error rate. | 2012-10-04 |
20120250779 | Method for Transmitting an Information Sequence - Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied. | 2012-10-04 |
20120250780 | METHOD AND DEVICE FOR PRE-CODING, AND METHOD AND DEVICE FOR DECODING - The present invention relates to the field of wireless communications technologies, and discloses a method and device for pre-coding and a method and device for decoding. The present invention implements an interference alignment method with excellent performance, can effectively increase the capacity of a multi-user interference system and reduce the mutual interference among users, The method for pre-coding includes: calculating a pre-coding matrix for each transmitting end according to a sum of mean square errors of data vectors to be transmitted by each transmitting ends; and using the pre-coding matrix to pre-code the data to be transmitted by each transmitting end. The present invention has broad application prospects, for example, can be used in LTE and LTE-Advanced CoMP technology. | 2012-10-04 |
20120250781 | DYNAMICALLY ADJUSTED A/D RESOLUTION - A process variable transmitter is used to measure a process variable, and, in doing so, dynamically changes the resolution of the A/D converter based upon the measured value of the analog input signal. This can be done by automatically adjusting the configurable resolution gain adjustment based on the value of the analog signal being measured, by normalizing the input signal being measured so that it is centered in an optimal resolution window of the A/D converter, or by adjusting a voltage reference provided to the A/D converter. | 2012-10-04 |
20120250782 | DATA TRANSMISSION SYSTEM AND METHOD - A data transmission system includes a mobile originated device and at least one cloud server. The mobile originated device obtains information of at least one datum to be transmitted. The mobile originated device builds connections with several candidate mobile devices through a first wireless data transmission interface, and selects at least one target mobile device from the candidate mobile devices. The mobile originated device obtains target-mobile-device information of the target mobile device through the first wireless data transmission interface. The mobile originated device transmits the target-mobile-device information and the information of the datum to be transmitted to the cloud server through a second wireless data transmission interface. The cloud server assists the mobile originated device to transmit the datum to be transmitted to the target mobile device according to the target-mobile-device information and the information of the datum to be transmitted. | 2012-10-04 |
20120250783 | Method and Apparatus for Communicating Data in a Digital Chaos Communication System - The present invention teaches method and apparatus to transform a featureless, unpredictable, and non-repeatable chaos waveform into digital chaos waveforms that maintain featureless characteristics to serve as a for wireless communications protocol, whereby unintended observers cannot detect or disrupt yet imprint a small measure of predictability and repeatability to aid intend observers in recovering embedded information. | 2012-10-04 |
20120250784 | SYSTEM AND METHOD FOR ADAPTING A PIECE OF TERMINAL EQUIPMENT - A communication system ( | 2012-10-04 |
20120250785 | Adaptive Error Correcting Code for Data Communications Over a Plastic Optical Fibre - An efficient coding and modulation system for transmission of digital data over plastic optical fibres is disclosed. The digital signal is coded by a three-level coset coding. The spectral efficiency of the system is configurable by selecting the number of bits to be processed in each of the levels. The first level applies to the digital data a binary BCH coding and performs coset partitioning by constellation mapping and lattice transformations. Similarly, second level applies another binary BCH coding, which may be performed selectably in accordance with the desired configuration by two BCH codes with substantially the same coding rate, operating on codewords of different sizes. The third level is uncoded. The second and third levels undergo mapping and lattice transformation. After an addition of the levels, a second-stage lattice transformation is performed to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated. | 2012-10-04 |
20120250786 | DIGITAL MODULATOR AND METHOD FOR INITIATING RAMP POWER TRANSITIONS IN A MOBILE HANDSET TRANSMITTER - A digital modulator for a portable handset using 8PSK or EDGE modulation with a direct launch transmitter is used to controllably adjust the transmit power of the portable handset. The digital modulator includes a controller coupled between a memory and an accumulator. The controller is responsive to an indication that the transmit power should be transitioned. The controller temporarily alters the data transferred from the memory to the accumulator during transitions of the transmit power level. | 2012-10-04 |
20120250787 | SYSTEM ACCESS AND SYNCHRONIZATION METHODS FOR MIMO OFDM COMMUNICATIONS SYSTEMS AND PHYSICAL LAYER PACKET AND PREAMBLE DESIGN - A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame. | 2012-10-04 |
20120250788 | SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM - Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain N | 2012-10-04 |
20120250789 | GENERATING A MODULATED SIGNAL FOR A TRANSMITTER - A technique includes generating an angle modulated square wave signal and progressively filtering the angle modulated square wave signal in a transmitter using a plurality of low pass filters to produce a modulated sinusoidal signal to drive an antenna. The technique includes programming the transmitter to tune a corner frequency of the filtering to a frequency within a range of frequencies selectable using the programming, based on a carrier frequency associated with the modulated sinusoidal signal. | 2012-10-04 |
20120250790 | FREQUENCY SELECTIVE IQ CORRECTION - In conventional radio frequency (RF) systems, transmitters will usually convert baseband signals to RF so as to be transmitted. As part of the conversion process, the transmitters will perform digital preditortion (DPD), which uses feedback from a power amplifier. However, there are usually mismatches between the in-phase (I) and quadrature (Q) paths within with feedback loop. Traditional IQ correction filters were ineffective at providing adequate compensation for these mismatches, but here a filter is provided that provides adequate out-of-band compensation by use of frequency selectivity. | 2012-10-04 |
20120250791 | Codebook Method for a Multiple Input Multiple Output Wireless System - A method for wireless encoding includes encoding wireless multiple input and multiple output signals in accordance with a codebook being one of a discrete codebook restricting elements of codebook entries to be within a predetermined finite set of complex numbers and a constant amplitude codebook including each entry in its codebook having equal column norm and equal row norm. In a preferred embodiment the digital codebook further includes restricting elements of a finite set in the discrete codebook to be in the form of k | 2012-10-04 |