25th week of 2009 patent applcation highlights part 31 |
Patent application number | Title | Published |
20090154486 | Tracking Network Contention - Methods, apparatus, and product for tracking network contention on links among compute nodes of an operational group in a point-to-point data communications network of a parallel computer are disclosed. In embodiments of the present invention, each compute node is connected to an adjacent compute node in the point-to-point data communications network through a link. Tracking network contention according to embodiments of the present invention includes maintaining, by a network contention module on each compute node in the operational group, a local contention counter for each compute node, each local contention counter representing network contention on links among the compute nodes originating from the compute node; and maintaining a global contention counter, the global contention counter representing network contention currently on all links among the compute nodes in the operational group. | 2009-06-18 |
20090154487 | MANAGING COMMUNICATIONS OVER A SHARED MEDIUM - Communicating between stations over a shared medium includes: monitoring the shared medium for signals received at a first station that is identified with a local network; storing information at the first station that represents characteristics of the signals received at the first station associated with capacity of the shared medium; monitoring the shared medium for signals received at a second station that is identified with the same local network as the first station; storing information at the second station that represents characteristics of the signals received at the second station associated with capacity of the shared medium; and determining whether a stream of data is allowed to be transmitted over the shared medium between the first station and the second station based on at least one of the stored information from the first station and the stored information from the second station. | 2009-06-18 |
20090154488 | METHODS AND APPARATUS FOR SERVICE PROTECTED RANGING IN A PON - In various example embodiments, a system, method and apparatus are provided for assuring that a ranging process on a PON does not affect real-time services. In an example embodiment, a method is provided. The method includes designating a real-time frame every R frames in a communications system. The method also includes designating frames intervening between real-time frames as non-real-time frames. The method may further include determining a quiet zone is needed for detection of network equipment. Moreover, the method may include scheduling a quiet zone of one or more consecutive non-real-time frames. Additionally, the method may include receiving ranging signals from the network equipment during the quiet zone. | 2009-06-18 |
20090154489 | METHOD FOR DISTRIBUTING CONTENTION AMONG TERMINALS IN CONTENTION ACCESS PERIOD OF SUPERFRAME - Disclosed is a method for distributing contention among terminals in a Contention Access Period (CAP) of a superframe in regard to a Medium (or Media) Access Control (MAC) layer employing a beacon-enabled mode in IEEE 802.15.4 standard. The method includes: dividing the CAP or the superframe into a plurality of sub-periods, all having the same size; receiving an association request message from a relevant terminal; and allocating one of the plurality of sub-periods to the relevant terminal, and transferring information on the sub-periods to the relevant terminal through a beacon frame, by a Personal Area Network (PAN) coordinator. | 2009-06-18 |
20090154490 | METHOD AND SYSTEM FOR DUTY CYCLING A NETWORK PORT BASED ON DUTY CYCLING OF A LINK COMMUNICATIVELY COUPLED TO THE PORT - Aspects of a method and system for duty cycling a network port based on duty cycling of a link communicatively coupled to the port are provided. In this regard, in a network node communicatively coupled to a network link which operates at a plurality of data rates, one or more components of said network node may be cycled through a series of configurations, where a processing capacity and/or a duration of each configuration may be based on the plurality of data rates on the network link. Exemplary components of the node may comprise one or more hybrids, transmitters, receivers, processors, and/or memory elements. The components may be cycled through the series of configurations during each of a series of time intervals. The series of configurations may be based on one or more of a type of data communicated over said network link and an application running on said network node. | 2009-06-18 |
20090154491 | Method And System For Negotiating Multiple Data Rate Transitions On An Ethernet Link - An Ethernet network may comprise multi-rate link partners coupled via an Ethernet link wherein a pattern, over time, of offered data rates may be determined. Link partners may establish a communication policy for modifying transmission rates to mimic offered data rates and may vary rates accordingly. The communication control policy may be communicated between nodes via one or more of physical layer control characters, an out of band channel and higher layer protocol packets. An established communication policy may improve energy efficiency and may be dynamically modified, for example, based on link utilization. In this regard, data rates may be symmetrical or asymmetrical with respect to direction of transmission. Moreover, data rates may comprise the offered data rate plus additional bandwidth for head room and may comprise one or more of a full rate, an intermediate rate and/or a rate of zero. Rate transitions may be synchronized among network nodes. | 2009-06-18 |
20090154492 | Method And System For A Distinct Physical Pattern On An Active Channel To Indicate A Data Rate Transition For Energy Efficient Ethernet - Aspects of a method and system for a distinct physical pattern on an active channel to indicate a data rate transition for energy efficient Ethernet. In this regard, one or more distinct physical patterns may be transmitted on one or more active channels of a network link during an inter-packet gap to control a data rate on the link. The unique physical pattern may be transmitted instead of or in addition to one or more IDLE symbols. The distinct physical pattern may communicate a data rate to be utilized on the link and/or indicate when a data rate transition should occur on the link. The distinct pattern may be transmitted and/or the data rate transition may occur during a specified inter-packet gap or during a specified packet boundary. The distinct physical pattern may comprise one or more control characters and/or an ordered set of voltage levels, symbols, and/or characters. | 2009-06-18 |
20090154493 | Method and a System for Transporting of Data with Integrated Protocol Mapping Function - The invention relates to a network comprising at least one host device having an interface card connected to a backplane of said host device, wherein said interface card comprises at least one cage for receiving a pluggable module which performs a traffic management of data transported via at least one optical fibre connected to said pluggable module. | 2009-06-18 |
20090154494 | Method and system for service application and service application control agent - A service application method and system, and a service application control agent (SACA) for reducing the delay of service application are provided. The method includes the following steps. An SACA receives service application information sent from a customer premises equipment (CPE). The SACA queries for Quality of Service (QoS) parameters corresponding to the service according to the service application information. Resource authorization and reservation request information containing the QoS parameters is sent to a resource and admission control unit. The resource and admission control unit verifies the request information to be authorized and admitted, and delivers a control strategy to a transport unit after the verification is passed. A service application system and an SACA are also provided correspondingly. | 2009-06-18 |
20090154495 | SCALABLE ERROR DETECTION AND CROSS-SESSION TIMING SYNCHRONIZATION FOR PACKET-SWITCHED TRANSMISSION - A system and method for providing improved scalable error detection and cross-timing synchronization for packet-switched transmission. In one embodiment, checksum error detection is applied for the core layer and for enhancement layers of the scalable payload in such a way that dropping one or several enhancement layers from the payload does not change the value of the checksum. Only one checksum is transmitted, e.g., in the payload or in the header of the lower-layer protocol. The transmitter modifies the encoded bit stream in such a manner that the entity in the network deploying the scalable payload and removing layers from the packet does not need to recalculate the checksum placed in the payload or packet header, even when the payload size is changed. A prefix/tail bit field is added in the beginning/end of each enhancement layer to make the checksum check match with the common checksum. In another embodiment, the receiver may check the correctness of each received layer simultaneously and, if desired, utilize data only from correctly received layers. | 2009-06-18 |
20090154496 | COMMUNICATION APPARATUS AND PROGRAM THEREFOR, AND DATA FRAME TRANSMISSION CONTROL METHOD - A communication apparatus including a physical layer processing unit that transmits data to a communication medium and a lower-layer processing unit that performs transmission control is provided. The transmission control includes at least one of aggregated-frame transmission control in which a data frame is supplied to the physical layer processing unit as an aggregated frame by aggregating the data frame with at least one other data frame, and single-frame transmission control in which the data frame is supplied to the physical layer processing unit as a single frame. The lower-layer processing unit determines whether to supply the data frame to the physical layer processing unit as the aggregated frame by performing the aggregated-frame transmission control or as the single frame by performing the single-frame transmission control based on a type of data contained in a payload of the data frame. | 2009-06-18 |
20090154497 | Method and Apparatus for Encoding/Decoding - The present invention relates to a multimedia data encoding/decoding method and apparatus. The encoding method includes generating a data area comprising a plurality of media data areas; generating a plurality of track areas corresponding to the plurality of media data areas, respectively; and generating a meta area comprising a first area comprising identification information on media data and a second area comprising position information on the media data. According to the present invention, the multimedia data encoding/decoding method and apparatus has an effect of being capable of constructing a slide show by only a small amount of multimedia data. Thus, a time taken to process and transmit the multimedia data can reduce. | 2009-06-18 |
20090154498 | METHOD AND APPARATUS FOR REASSEMBLING DOCSIS MAC FRAME IN CABLE MODEM INCLUDING PLURAL RECEIVING CHANNELS - A Data Over Cable Service Interface Specifications (DOCSIS) frame reassembling apparatus and method in a cable modem including a plurality of receiving channels is provided. A method of controlling reassembling of a Media Access Control (MAC) frame, the method including: receiving a signal and outputting a packet signal through demodulation and error correction; receiving the outputted signal and controlling a specific compression format standard header and a point field; receiving packet data and a buffer write enable signal, and writing data in a MAC frame reassembling buffer; storing the data written in the MAC frame reassembling buffer; and reading the stored data from the MAC frame reassembling buffer in response to a received buffer read enable signal and storing the read data in a MAC frame buffer. | 2009-06-18 |
20090154499 | DATA MULTIPLEXING/DEMULTIPLEXING APPARATUS - In generation of a system header included in an program stream of extended MPEG-2 Systems, when a basic stream ID is an extension ID and basic buffer size information represents 0 byte, extension buffer size information expressed by a total of 24 bits of an extension ID, a marker bit and an extension stream ID and a total of 24 bits including an extension stream ID, a marker bit and extension buffer bound scale information and required for reproduction of an elementary stream to be multiplexed using a pair of an extension ID and an extension stream ID is generated and recorded. | 2009-06-18 |
20090154500 | Method And System For Energy Efficient Signaling For 100MBPS Ethernet Using A Subset Technique - Aspects of a method and system for energy efficient signaling for 100 mbps Ethernet using a subset are provided. In this regard, a network device enabled to communicate over a network link at 1 Gbps or faster may be configured to communicate over the network link at, or approximately at, 100 Mbps by reducing a number of active channels over which the network device communicates and/or reducing a size of a signal constellation utilized by the network device to encode data. The device may communicate according to 1GBASE-T or 10GBASE-T standards. The number of active channels may be reduced to a single bidirectional channel or two unidirectional channels. The signal constellation may be reduced to two or three levels. One or more components of the network device may be unnecessary for recovering data when communicating at 100 Mbps and may thus be powered down, or placed into a lower power mode. | 2009-06-18 |
20090154501 | Method and Apparatus For Transporting Network Management Information In a Telecommunications Network - Network management information (NMI) contained in a first set of byte locations of a received frame is relocated to a second set of byte locations of another frame. The NMI is then transported through network elements using the second set of byte locations until the NMI is to be transported to a compatible network element, which can understand the NMI. At which time, the NMI is relocated back to the first set of byte locations of frames destined for the compatible network element. The relocation of the NMI from a first set of byte locations to a second set of byte locations allows the NMI to be transparently transported through incompatible network elements. | 2009-06-18 |
20090154502 | SYSTEM(S), METHOD(S), AND APPARATUS FOR ACCURATE DETECTION OF THE END OF STREAM - A multimedia presentation system for presenting multimedia data comprising a demultiplexing unit and at least one processing unit. The demultiplexing unit demultiplexes a plurality of streams of data. At least one presentation processing unit provides the plurality of stream of data for presentation according to predetermined timing and detecting an end of any one of the plurality of streams of data. | 2009-06-18 |
20090154503 | ALL-FIBER MODE SELECTION TECHNIQUE FOR MULTICORE FIBER LASER DEVICES - An optical device that includes 1) a gain section having a plurality of core regions including dopant species configured to absorb incident radiation at a first wavelength and emit radiation at a second wavelength, and 2) at least one passive section attached to the gain section. The gain section and the at least one passive section comprise an optical cavity which selectively promotes in-phase light emission from the optical cavity. An alternative optical device which includes a gain section having a plurality of core regions including dopant species configured to absorb incident radiation at a first wavelength and emit radiation at a second wavelength, and 2) two passive sections attached to the gain section at opposite ends. In this alternative optical device, the gain section and the two passive sections comprise an optical cavity which selectively promotes in-phase light emission from the optical cavity such that the light emission from the optical cavity, in a far field, has a singular Gaussian-like intensity distribution about a longitudinal axis extending from the optical cavity. | 2009-06-18 |
20090154504 | Laser Processing Apparatus, Laser Processing Method, and Method For Making Settings For Laser Processing Apparatus - It is an object to enable easily adjusting a focus position for coping with thermal lens effects. There is provided a laser-light scanning portion including a Z-axis scanner capable of adjusting the focus position of laser light in the direction of the optical axis, an X-axis scanner and a Y-axis scanner. Further, there are provided a laser driving control portion for controlling a laser oscillation portion and the laser-light scanning portion, a processing-condition setting portion for setting a laser-light outputting condition and a processing pattern as processing conditions for processing in a desired processing pattern, and an amount-of-correction identification section for identifying, as an amount of focus-position correction, the deviation of the focus position in the direction of the optical axis which is caused by thermal lens effects induced based on the laser-light outputting condition set by the processing-condition setting portion. During irradiation of the laser light, the laser driving control portion scans the laser light, in such a way as to add the amount of focus-position correction identified by the amount-of-correction identification section to the processing condition set by the processing-condition setting portion. | 2009-06-18 |
20090154505 | WAVELENGTH TUNABLE LASER DIODE USING DOUBLE COUPLED RING RESONATOR - A wavelength tunable laser diode using a double coupled ring resonator is provided. A new double coupled ring resonator structure is formed by a connection of two ring resonators having different radii so that stable laser oscillation occurs only in a resonant wavelength at which the two ring resonators are simultaneously resonated, and the effective refractive index of the two ring resonators is properly controlled differently for tunable laser oscillation wavelengths. The reproducibility of the optical coupling characteristics of the passive waveguides and the ring resonator can be assured by multi-mode couplers. This results in improved manufacturing productivity of the wavelength tunable laser diode. It is possible to amplify and output an output light without having an effect on oscillation wavelength characteristic by means of an optical amplifier integrated in an output end. | 2009-06-18 |
20090154506 | Tunable laser module - The objective of the present invention is to provide with is to provide with a tunable laser module capable of adequately detecting the decay of the large variation in the wavelength of the light and then operating the shutter. The tunable laser module | 2009-06-18 |
20090154507 | Nonresonant Multiple Pass Nonlinear Structure - A system, a structure, and a method for the generation of second harmonic light are provided. A laser system comprises a seed laser that produces a fundamental frequency light, and a nonresonant multiple pass nonlinear structure generates a second harmonic light using the fundamental frequency light. A second harmonic outcoupler outputs the second harmonic light from the laser system and a reflecting structure reflects a remaining portion of the fundamental frequency light back into the nonresonant multiple pass nonlinear structure to generate additional second harmonic light. | 2009-06-18 |
20090154508 | LIGHT-GENERATING APPARATUS WITH BROADBAND PUMPING LASER AND QUASI-PHASE MATCHING WAVEGUIDE - A light-generating apparatus comprises a broadband pumping laser configured to emit a broadband pumping light having a bandwidth larger than 10 nanometers and a broadband wavelength-converting device. The broadband wavelength-converting device includes a domain-inverted structure configured to convert the broadband pumping light into at least one conversion light by using at least a sum frequency generation mechanism and at least one waveguide positioned in the domain-inverted structure, and the waveguide has an input end configured to receive the broadband pumping light and an output end configured to output the conversion light. Since the light-generating apparatus uses the broadband pumping laser and the broadband wavelength-converting device, it is temperature-insensitive and speckle-free. | 2009-06-18 |
20090154509 | Laser Processing Apparatus, Method For Making Settings For The Laser Processing Apparatus, Program For Making Settings For The Laser Processing Apparatus, and Computer-Readable Recording Medium - It is an object to enable control according to an optimum temperature condition for a wavelength conversion device. There are provided a laser medium for creating fundamental-wave laser light with a fundamental frequency; a wavelength conversion device which, if the fundamental-wave laser light from the laser medium is inputted thereto, creates higher-harmonic-wave laser light with a harmonic wavelength of a higher order than the wavelength of the fundamental-wave laser light; a temperature measurement section for measuring the temperature of the wavelength conversion device; a temperature adjustment section for adjusting the temperature of the wavelength conversion device; a temperature control section for controlling the temperature adjustment section for changing the temperature of the wavelength conversion device within a predetermined range; an output monitoring section for measuring the laser power emitted from the wavelength conversion device at each temperature of the wavelength conversion device which is changed in temperature by the temperature control section; and a temperature setting section for setting the temperature of the wavelength conversion device at which the laser power measured by the output monitoring section has a maximum value, as an optimum temperature of the wavelength conversion device. | 2009-06-18 |
20090154510 | Optoelectrical assembly with frequency-doubled solid state laser - An optoelectrical assembly ( | 2009-06-18 |
20090154511 | OPTICAL OUTPUT CONTROL CIRCUIT AND OPTICAL OUTPUT MONITORING METHOD FOR MONITORING OPTICAL OUTPUT FROM LASER LIGHT SOURCE - A Light receiver generates a monitoring voltage according to an optical output of an LD element. The control circuit obtains a set value according to the ambient temperature around the LD element, and controls the optical output of the LD element on the basis of the comparing the result between the set value and the monitoring voltage. An adjustment section corrects the monitoring voltage on the basis of the set value and outputs the corrected monitoring voltage. | 2009-06-18 |
20090154512 | Method And Device For Monitoring Light - A method for monitoring laser light launched into a core of a single mode fiber includes launching a portion of light directly into the cladding about the core. The cladding launched light is a known fraction of the core launched light and can be monitored by placing a detector about the cladding. Detected light including light that was launched into the cladding and has leaked through the cladding is used as a known fraction of light in the core and can be used to control the laser light source. This can be done with a straight section of single mode optical fiber and does not require bending the fiber. Advantageously, most of the core launched light remains in the core as guided light. | 2009-06-18 |
20090154513 | MULTILAYER BOARD AND LIGHT-EMITTING MODULE HAVING THE SAME - Provided are a multilayer board and a light-emitting module having the same. The light-emitting module comprises a light-emitting diode chip and a multilayer board. The multilayer board is electrically connected to the light-emitting diode chip and comprises a nonconductive heat sink via and a thin copper layer. | 2009-06-18 |
20090154514 | OPTICAL AMPLIFIER-INTEGRATED SUPER LUMINESCENT DIODE AND EXTERNAL CAVITY LASER USING THE SAME - Provided is a super luminescent diode having low power consumption due to low threshold current and a high output power in low-current operation, which is suitable for an external cavity laser. The super luminescent diode for use in the external cavity laser is divided into a super luminescent diode (SLD) region and a semiconductor optical amplifier (SOA) region to provide a light source having a low threshold current and a nearly double output power of a conventional SLD. | 2009-06-18 |
20090154515 | SEMICONDUCTOR LIGHT EMITTING DEVICE - In a semiconductor light emitting device having a conductive semiconductor substrate on which at least the following layers are stacked in the order listed below: a first clad layer; an active layer which includes at least one highly strained quantum well layer having a compressive strain amount of not less than 1% with respect to the conductive semiconductor substrate; and a second clad layer, a strain buffer layer adjacently formed on the active layer and includes a layer having a compressive strain amount not greater than the strain amount of the active layer is further provided. | 2009-06-18 |
20090154516 | PARTICLE DISPLAY WITH JET-PRINTED COLOR FILTERS AND SURFACE COATINGS - A method of forming a buried aperture in a nitride light emitting device is described. The method involves forming an aperture layer, typically an amorphous or polycrystalline material over an active layer that includes a nitride material. The aperture layer material typically also includes nitride. The aperture layer is etched to create an aperture which is then filled with a conducting material by epitaxial regrowth. The amorphous layer is crystallized forming an electrically resistive material during or before regrowth. The conducting aperture in the electrically resistive material is well suited for directing current into a light emitting region of the active layer. | 2009-06-18 |
20090154517 | HYBRID LASER DIODE FOR SINGLE MODE OPERATION AND METHOD OF FABRICATING THE SAME - Provided are a hybrid laser diode for single mode operation, and a method for manufacturing the hybrid laser diode. The hybrid laser diode includes a silicon layer, an active pattern disposed on the silicon layer, and a bonding layer disposed between the silicon layer and the active pattern. Here, the bonding layer includes diffraction patterns constituting a Bragg grating. | 2009-06-18 |
20090154518 | LASER BEAM TRANSFORMER AND PROJECTOR - An original laser-radiation beam having a symmetrical M | 2009-06-18 |
20090154519 | THERMOMETER CALIBRATION - A method for calibrating a thermometer is provided. The method includes deriving values of at least two different reference calibration coefficients of a reference calibration equation. The reference calibration equation relates temperature of a reference temperature sensor to at least two different calibration coefficients and a measured characteristic of the reference temperature sensor. A primary temperature sensor of the thermometer is calibrated using the derived values of the at least two different reference calibration coefficients. In another method for calibrating a thermometer, value of at least one reference calibration coefficient is derived from a reference calibration equation. The reference calibration equation is a non-linear equation relating the temperature of the reference temperature sensor to the at least one calibration coefficient and a measured characteristic of the reference temperature sensor. | 2009-06-18 |
20090154520 | METHOD AND DEVICE FOR DETERMINING SPECIFIC HEAT CAPACITY - The specific heat capacity (c | 2009-06-18 |
20090154521 | Non-contact method and apparatus for hardness case depth monitoring - There is provided a method and apparatus to monitor hardness using laser infrared photothermal radiometry. The emphasis is on the ability of this invention to monitor in a non-contact and non-destructive manner the hardness case depth of industrially heat treated steels. The present invention provides a method and apparatus comprising signal generation and analysis as well as instrumental hardware configurations based on the physical principle of photothermal radiometry. The method comprises (a) irradiating the sample surface with an excitation source of suitable emission wavelength and intensity. (b) producing periodic frequency pulses of the laser beam by means of a modulator in the appropriate frequency range (but not confined to) 0.1-100000 Hz. (c) passing the emitted beam through appropriate optics for beam conditioning (d) splitting the incident beam in two beams using a beam-splitter (e) focusing one of the beams onto a photodiode connected to a lock-in amplifier referenced to the modulator frequency to monitor laser power fluctuations (f) directing the second beam normal or at an angle to the surface of the sample (g) directing the generated infrared emissions from the sample surface to an infrared detector connected to another lock-in amplifier also referenced to the modulator frequency (h) recording the signals obtained from both lock-in amplifiers by a computer (i) processing the obtained signals through proprietary software and pre-calibration curves. | 2009-06-18 |
20090154522 | Temperature sensor and method for measuring temperature - The invention provides a total gas temperature sensor for measuring the temperature of gas in a gas flow. A gas temperature sensor in accordance with the invention comprises a measurement chamber having a gas inlet and a gas outlet; an outlet valve located at the gas outlet, operable to seal the gas outlet when in a closed position, and a temperature sensing element located in the measurement chamber. The sensor is simple to manufacture, is robust, provides for a low recovery correction and does not suffer from significant boundary layer problems. | 2009-06-18 |
20090154523 | BODY-TEMPERATURE MEASURING DEVICE AND BODY-TEMPERATURE MEASURING SYSTEM HAVING THE DEVICE - A body-temperature measuring device is provided. The device includes: a pad which is attachable to and detachable from a human body; a battery which is provided to the pad and includes a pair of battery terminals for supplying power; and a temperature sensing block which is attached to and detached from the pad and comprises units for contacting the human body to sense temperature and wirelessly transmitting a temperature sensing signal corresponding to the sensed temperature and a pair of connecting terminals which are electrically connected to the battery terminals only when attached to the pad, and a body-temperature measuring system including one or more of the body-temperature measuring devices and a receiver which receives the wirelessly transmitted temperature sensing signal, measures the temperature by using the received signal, and informs of a result of measuring the temperature. | 2009-06-18 |
20090154524 | Integrated System for Hydro-Thermo-Sanitary Apparatuses - An integrated system for hydro-thermo-sanitary apparatuses comprising electric current generating means, a control board, water temperature sensors and LEDs or strips of LEDs arranged near the water outlet section for indicating the dispensed water temperature according to the colour with which the light of the LEDs is emitted. An acoustic-vocal indicator may also be provided. | 2009-06-18 |
20090154525 | APPARATUS AND METHOD FOR MEASURING CHARACTERISTIC AND CHIP TEMPERATURE OF LED - An apparatus for measuring a characteristic and a chip temperature of an LED includes a thermal conductive component. An LED chip is disposed on the thermal conductive component. A temperature control unit is connected to the thermal conductive component for providing a temperature to the thermal conductive component, and therefore providing the temperature to the LED chip via the thermal conductive component. A power-source and voltage-meter unit provides a current to the LED chip, and measures a voltage value of the LED chip. Under a measurement mode, the current is featured with a current waveform having a high current level and a low current level which are alternatively changed, for applying to the LED chip. Measurements are conducted respectively corresponding to the high current level and the low current level, and a correlation curve between the voltage and the temperature can be obtained with the results of measurement. | 2009-06-18 |
20090154526 | RADIO RECEIVING APPARATUS AND RADIO RECEIVING METHOD - A radio receiving apparatus of the present invention is for receiving a radio signal having pulsating signals occurring at specific periods, wherein the radio receiving apparatus corrects signal levels received during communication in individual regions into which each of the aforementioned periods is divided based on signal levels received in the individual regions under conditions where the radio signal is not received. As a result of this correction, the radio receiving apparatus of the present invention can decrease the influence of noise having periodicity and improve reliability of communication. | 2009-06-18 |
20090154527 | PULSE GENERATOR, TRANSMITTER-RECEIVER, AND PULSE GENERATION METHOD - A pulse generator with a filter section limiting a band of an input signal, and a pulse generating section generating a plurality of pulses which are sequentially delayed one after another by a time period (τ) substantially equal to a reciprocal of a center frequency of the band of the filter section, and inputting the plurality of pulses to the filter section. | 2009-06-18 |
20090154528 | ADAPTIVE MULTI-CHANNEL INTEGRATED WIRELESS NETWORK SYSTEM ARCHITECTURE - An adaptive multi-channel architecture for a wireless network is provided. A frequency hopping sequence generator module is compliant with a frequency hopping spread spectrum (FHSS) communications protocol. The frequency hopping sequence generator module is capable of performing FHSS concurrently on a plurality of communications channels. A frequency replacement module is coupled to the frequency hopping sequence generator module. The frequency replacement module is configured to receive feedback data over a feedback channel and adaptively select a transmission channel from the plurality of communications channels using the feedback data. | 2009-06-18 |
20090154529 | METHOD AND APPARATUS FOR ACQUIRING OFDM SYNCHRONIZATION - Provided is a method and apparatus for acquiring OFDM synchronization even when it fails to detect a plurality of symbols at an initial stage. In the method, a frequency is adjusted to a first frequency band and a cross correlation value between a received preamble symbol and a preset preamble symbol is calculated. When the calculated cross correlation value is larger than a predetermined reference value and is first detected, frequency hopping is performed to receive subsequent symbols and cross correlation values to the subsequent symbols are reexamined. When the reexamined cross correlation value larger than the predetermined reference value is detected, timing synchronization, frequency offset estimation, and frame detection are performed. | 2009-06-18 |
20090154530 | MIMO/Transmit Diversity Channel Estimation - A receive station of the present invention despreads a received signal over multiple successive symbol periods of an extended measurement period to determine individual channel estimates over each symbol period of an extended period for multiple pilot signals. In one example, the extended measurement period comprises two extended periods, each of which comprise two symbol periods. As a result, the present invention provides channel estimates sufficient for both slow and fast fading conditions. The receive station determines a combined channel estimate for the pilot signals over each symbol period of an extended period by despreading the received signal over each symbol period of an extended measurement period using a common spreading sequence. Based on the combined channel estimates, the receive station determines individual channel estimates for each pilot signal over each symbol period of the extended period. | 2009-06-18 |
20090154531 | Multi-Pass Parameter Estimation for G-Rake Receiver - In a parametric G-Rake receiver, a method an apparatus computes initial estimates of one or more scaling parameters and initial combining weights for the parametric G-Rake receiver; estimates the SINR of a received signal based on a mean pilot symbol estimate and the initial combining weights; computes revised estimates for one or more scaling parameters based on the estimated SINR and the initial combining weights; and computes revised combining weights based on one or more revised scaling parameter estimates. | 2009-06-18 |
20090154532 | APPARATUS AND METHOD FOR RECEIVING SIGNAL FOR EXTENT LIMITATION OF TIMING SYNCHRONIZATION IN MB-OFDM UWB SYSTEM - The present invention relates to an apparatus and a method for receiving signal for extent of timing synchronization in MB-OFDM UWB System. The invention divides the digital samples completed of sampling twice as much as minimum sampling clock required to restore the MB-OFDM received signal into ODD data path and EVEN data path, executes the packet detection and timing synchronization for each of divided path and selects the data of path with larger cross correlation value at the timing synchronization point to secure the stable receiving performance in system environment with severe frequency offset and prevent the FTT window shift within preamble section through adding minimum hardware and structural change without increasing the system clock. | 2009-06-18 |
20090154533 | SYSTEM AND METHOD FOR TRANSMIT TIME COMPUTATION AT A RELAY STATION - Communications between a base station and a mobile station is improved through using a relay station. A transmit timing of relayed signals from the relay station is controlled so that the signals from the base station and the relay station arrive to the mobile station aligned with each other within a predetermined tolerance. | 2009-06-18 |
20090154534 | SOFTWARE DEFINED COGNITIVE RADIO - A computing device with a software defined radio. The software defined radio has an architecture with separate components to provide control functions and data processing functions. The control components configure the data processing components so that the software defined radio provides desired operating characteristics. Components in the data plane may derive information indicating operating conditions, which can be provided to one or more of the control components. In response, the control components can modify components in the data plane to adjust to operating conditions. | 2009-06-18 |
20090154535 | Communicating Signals Through Two Twisted Pairs - In one embodiment, a method includes communicating with a Digital Subscriber Line (DSL) transceiver unit through a first twisted pair that comprises a first plurality of wires, and communicating with the DSL, transceiver unit through a second twisted pair that comprises a second plurality of wires. A training procedure is implemented to receive first signals from the DSL transceiver unit through the first plurality of wires of the first twisted pair, and to send second signals to the DSL transceiver unit through the second plurality of wires of the second twisted pair. | 2009-06-18 |
20090154536 | STARTUP PROTOCOL FOR HIGH THROUGHPUT COMMUNICATIONS SYSTEMS - A startup protocol is provided for use in a communications system having a communications line with a master transceiver at a first end and a slave transceiver at a second end, each transceiver having a noise reduction system, a timing recovery system and at least one equalizer all converging at startup of the system. The operation of the startup protocol is partitioned into stages. The first stage includes the step of converging the equalizer and the timing recovery system of the slave while converging the noise reduction system of the master. Upon completion of the first stage the protocol enters a second stage which includes the step of converging the equalizer and the timing recovery system of the master, converging the noise reduction system of the slave, freezing the timing recovery system of the slave, and resetting the noise reduction system of the master. Upon completion of the second stage, the protocol enters a third stage which includes the step of reconverging the noise reduction system of the master. The protocol then enters a fourth stage in which the master transceiver and the slave transceiver are ready to communicate with each other. | 2009-06-18 |
20090154537 | Frequency Selection Cable Reflector - An apparatus for use in a cable system comprises a first port for use in coupling to a portion of a cable network for receiving an upstream signal having a frequency spectrum including a first frequency band; and a reflector for reflecting the received upstream signal back downstream via the first port; wherein the first frequency band is different from those frequency bands used by a head-end of the cable network for Internet communications. | 2009-06-18 |
20090154538 | METHOD OF ALLOCATING UPSTREAM BANDWIDTH - A cable modem termination system receives a bandwidth request message, and collects information on the basis of the bandwidth request message. Then, time bandwidth size information is generated on the basis of the bandwidth request message and the collected information, and a bandwidth allocation message is generated on the basis of the collected information and the time bandwidth size information. Accordingly, a cable modem termination system can effectively receive data transmitted from a cable modem. | 2009-06-18 |
20090154539 | Methods and Apparatus for Detecting Errors in Encoding and Decoding of Data - Systems and techniques for improved error detection in data communication. A sending station encodes unencoded data to create an encoded message and passes the encoded data to transmission elements for transmission to a destination receiver. At the same time, error detection is performed using copies of the unencoded data and the encoded message. The encoded message is decoded using a decoding procedure identical to that to be used by the destination receiver. The copy of the unencoded data is compared to the decoded copy of the encoded message, and if the copy of the unencoded data does not match the decoded copy, the presence of an error is identified and error recovery procedures are performed. | 2009-06-18 |
20090154540 | METHOD AND APPARATUS FOR ESTIMATING CHANNEL IN MOBILE COMMUNICATION NETWORK - The present invention relates to a method and apparatus for estimating a channel in a mobile communication network. In particular, the present invention relates to a method of estimating a channel under a channel environment where interference between neighboring base stations exists in a mobile communication network using an orthogonal frequency division multiplexing (OFDM) method. In order to estimate a channel, one cluster is divided into two sub-clusters, and pilot sub-carrier signals included in at least one sub-cluster in an OFDM symbol direction are used. Therefore, it is possible to further improve performance as compared to a method of estimating a channel by using pilot sub-carriers included in one cluster. | 2009-06-18 |
20090154541 | TRANSMITTER, RECEIVER AND COMMUNICATION TERMINAL SYSTEM - The transmitter for conducting communication with a receiver using a pulse train includes: a transmission frame generation section for generating a transmission frame; a pulse transmission timing generation section for generating pulse transmission timing to have intervals initially set to be the same as intervals at which the receiver receives pulses; and a pulse generation section for generating pulses according to the transmission frame and the pulse transmission timing. | 2009-06-18 |
20090154542 | High-speed serial data signal receiver circuitry - Circuitry for receiving a high-speed serial data signal (e.g., having a bit rate in the range of about 10 Gpbs and higher) includes a two-stage, continuous-time, linear equalizer having only two serially connected stages. Phase detector circuitry may be provided for receiving the serial output of the equalizer and for converting successive pairs of bits in that output to successive parallel-form bit pairs. Further demultiplexing circuitry may be provided to demultiplex successive groups of the parallel-form bit pairs to final groups of parallel bits, which can be quite large in terms of number of bits (e.g., 64 parallel bits). Another aspect of the invention relates to multiplexer circuitry for efficiently going in the opposite direction from such relatively large groups of parallel data bits to a high-speed serial data output signal. | 2009-06-18 |
20090154543 | Using a Triangular Waveform to Synchronize the Operation of an Electronic Circuit - An electronic circuit exhibiting synchronization with an external synchronization signal, the electronic circuit comprising: an input connection arranged to receive a synchronization input signal; a triangular waveform oscillator operatively associated with the synchronization signal input connection and responsive to a condition of the received synchronization input signal to initiate a triangular waveform; and a pulse train generator operatively associated with the triangular waveform oscillator, the pulse train generator arranged to generate a plurality of pulse trains having a fixed non-zero phase relationship between them and a frequency responsive to the condition of the synchronization input signal. | 2009-06-18 |
20090154544 | Amplifier Modulation Method and Apparatus - A signal is modulated by generating a pulse-width modulation signal and applying the pulse-width modulation signal to an input of a switched-mode amplifier. An output of the amplifier is coupled to a filter operable to impart either differential mode oscillations or common mode oscillations at the amplifier output based on the duty cycle of the pulse-width modulation signal. The duty cycle of the pulse-width modulation signal is varied to impart amplitude modulations at the amplifier output. | 2009-06-18 |
20090154545 | BANDWIDTH SENSITIVE DATA COMPRESSION AND DECOMPRESSION - Data compression and decompression methods for compressing and decompressing data based on an actual or expected throughput (bandwidth) of a system. In one embodiment, a controller tracks and monitors the throughput (data storage and retrieval) of a data compression system and generates control signals to enable/disable different compression algorithms when, e.g., a bottleneck occurs so as to increase the throughput and eliminate the bottleneck. | 2009-06-18 |
20090154546 | Method and Apparatus for Determining a Transport Bit Rate for a MultiProgram Transport Stream - Method and apparatus for determining a transport bit rate for a multiprogram transport stream (MPTS) is described. In one example, a plurality of transport bit rates is computed for a respective plurality of programs in the MPTS. A highest transport bit rate and a lowest transport bit rate are selected from the plurality of transport bit rates. An average transport bit rate is computed from the highest transport bit rate and the lowest transport bit rate. The average transport bit rate is provided as an initial transport bit rate for the MPTS. Jitter in the MPTS may be compensated using the initial transport bit rate. | 2009-06-18 |
20090154547 | SCATTERED PILOT CORRELATION IN DVB-H SYSTEMS - A method for correlating scattered pilot locations in a sequence of OFDM symbols in a multi-carrier transmission system, and includes mapping pilot locations comprising pilot symbols having predetermined known values, wherein the pilot symbols are positioned among data subcarriers in time and frequency dimensions consisting of received pilot symbols and having a predetermined position pattern in the time and frequency dimensions, wherein the predetermined position pattern comprises a finite number of sub-position patterns each corresponding to positions of the pilot symbols; estimating a Doppler spread in a frequency spectrum between the transmitter and the receiver in the multi-carrier transmission system; estimating a channel length of a set of channel paths received at the receiver; and the receiver automatically selecting one of a plurality of predetermined methods of correlating the scattered pilot locations in the sequence of OFDM symbols based only on the estimating processes. | 2009-06-18 |
20090154548 | METHOD FOR PROVIDING MULTIPLE STREAMS IN DIGITAL MEDIA AND TO SELECT VIEWABLE CONTENT BASED ON GEOGRAPHY - A method for selectively displaying viewing content based on geographic considerations, the method includes: decoding audio/video (A/V) information; detecting geographic identifiers in the A/V information; displaying specific portions of the A/V information associated with the geographic identifiers, in response to one or more geographic considerations; and wherein the A/V information is from one or more information streams inserted in a single digital broadcast or digital media. | 2009-06-18 |
20090154549 | DIRECT MODE MODULE WITH MOTION FLAG PRECODING AND METHODS FOR USE THEREWITH - A motion compensation module can be used in a video encoder that encodes, into a processed video signal, a video input signal including a sequence of pictures. The motion compensation module includes a motion flag generation module that generates a motion flag for at least one of the plurality of macroblocks of a first picture of the sequence of pictures based on a corresponding macroblock of a plurality of macroblocks of a second picture of the sequence of pictures. A direct mode motion vector module evaluates a direct mode motion vector for the corresponding macroblock of the second picture, based on the motion flag for the at least one of the plurality of macroblocks of the first picture. | 2009-06-18 |
20090154550 | INFORMATION PROCESSING APPARATUS - An information processing apparatus includes: a decoder to decode video data to a video signal; a graphic processing module to perform a video quality adjustment on the video signal decoded by the decoder; a display device to display video generated from the video signal; a connector for outputting the video signal to an external device; a display driver module to set an output target, to which the video signal is to be outputted; a determining module to determine to subject the video signal to the video quality adjustment performed by the graphic processing module, in accordance with the output target set by the display module. | 2009-06-18 |
20090154551 | APPARATUS FOR RECORDING/REPRODUCING MOVING PICTURE, AND RECORDING MEDIUM THEREOF - An apparatus for recording/reproducing a moving picture, and a recording medium thereof, are provided. The apparatus for recording a moving picture includes a recorder which records moving picture data sequentially outputted from an image pickup device in a frame unit as raw image data to a recording medium, and a compression processor, which generates compressed image data by compressing the moving picture data, wherein the recorder records the moving picture data by corresponding the raw image data to the compressed image data in the frame unit. Accordingly, the raw image data outputted from the image pickup device is recorded while the raw image data is easily handled. | 2009-06-18 |
20090154552 | TRANSMITTING SYSTEM AND RECEIVING SYSTEM FOR PROCESSING STREAM, AND STREAM PROCESSING METHODS THEREOF - A system for transmitting a transport stream including a robust stream is provided. The transmitting system includes an adaptor for, when receiving a first stream, making a space in the first stream to insert a second stream; a Reed-Solomon (RS) encoder for RS-encoding the input second stream; a Cyclic Redundancy Check (CRC) processor for converting the RS-encoded second stream to a stream comprising an added CRC bit sequence; and a stuffer for inserting the stream to the space in the first stream and outputting a transport stream. Hence, the robust stream can be efficiently transmitted. | 2009-06-18 |
20090154553 | RECEIVING AND SEPARATING AN ENCODED VIDEO STREAM INTO PLURAL ENCODED PICTURES WITH DIFFERENT IDENTIFIERS - Methods and systems for the efficient and non-redundant transmission of a single video program in multiple frame rates, optionally employing a combination of video coding standards, in a way that is backwards-compatible with legacy receivers only supportive of some subsection of frame rates or of some subsection of video coding standards. | 2009-06-18 |
20090154554 | MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus | 2009-06-18 |
20090154555 | Method and Apparatus for Selecting a Coding Mode - A method and apparatus for selecting a coding mode are described. For example, the method receives at least one block of a signal to be encoded. The method determines a frame vertical pixel difference in the at least one block and determines a field vertical pixel difference in the at least one block. The method then compares the frame vertical pixel difference with the field vertical pixel difference to determine a first coding mode for the at least one block. | 2009-06-18 |
20090154556 | ADAPTIVE MULTIMEDIA SYSTEM FOR PROVIDING MULTIMEDIA CONTENTS AND CODEC TO USER TERMINAL AND METHOD THEREOF - Disclosed are an adaptive multimedia system for providing multimedia contents and a codec to a user terminal, and a method thereof. The adaptive multimedia system includes: a media server controller that receives profile information from an open codec player of the user terminal, and when a codec for decoding the multimedia contents does not exist in the user terminal, transmits a control message to allow the multimedia contents and the decoding codec to be transmitted together; and at least one transmission frame generator that encodes the multimedia contents through a transcoder and an encoding module according to the control message transmitted from the media server controller, generates a transmission frame including the encoded multimedia contents and the decoding codec, and transmits the generated transmission frame to the open codec player. | 2009-06-18 |
20090154557 | MOTION COMPENSATION MODULE WITH FAST INTRA PULSE CODE MODULATION MODE DECISIONS AND METHODS FOR USE THEREWITH - A video encoder includes a mode decision module that determines a final macroblock cost for each macroblock of the plurality of macroblocks based on costs associated with a plurality of motion vectors. An intra pulse code modulation (IPCM) module, when enabled, selects an IPCM mode when the final macroblock cost compares unfavorably to an IPCM threshold. A reconstruction module generates residual pixel values for each macroblock of the plurality of macroblocks and a transform and quantization module, transforms and quantizes the residual pixel values when the IPCM mode is not selected. | 2009-06-18 |
20090154558 | METHOD FOR ADAPTIVE BIASING OF FULLY DIFFERENTIAL GAIN BOOSTED OPERATIONAL AMPLIFIERS - Rate control algorithms are adapted to cover multiple encoding standards are described. A rate controller includes an input adaptation interface, a core rate controller, and an output adaptation interface. The input adaptation interface converts rate control input parameters of a target encoding standard to corresponding native control input parameters of the rate controller. The core rate controller is coupled to the output of the input adaptation interface generating output parameters conforming to its native encoding standard. The output adaptation interface is coupled to the output of the core rate controller converting the generated output parameters to equivalent rate control output parameters conforming to the target encoding standard. | 2009-06-18 |
20090154559 | Redundant Data Dispersal In Transmission Of Video Data Based On Frame Type - The transmitting end of a content distribution system selectively employs a redundancy mechanism to encoded video data based on the frame type of each frame being transmitted. In the event that a particular frame contains information upon which the decoding of multiple frames may depend, the transmitting end can apply a redundancy mechanism to redundantly distribute the data of the frame throughout a set of data segments, each of which is separately transmitted via the network to the receiving end. Otherwise, in the event that a particular frame to be transmitted does not contain substantial information upon which the decoding of multiple frames may depend, the loss of some or all of the data of the frame may not appreciably affect the presentation of the video content at the receiving end and thus the transmitting end can forgo application of the redundancy mechanism to such frames so as to avoid unnecessarily processing and reduce the overall network bandwidth used to transmit the encoded video data. | 2009-06-18 |
20090154560 | VIDEO CODEC WITH SHARED INTERPOLATION FILTER AND METHOD FOR USE THEREWITH - A video processing device operates in an encoding mode when a mode selection signal has a first value and operates in a decoding mode when the mode selection signal has a second value. The video processing device utilizes an interpolation filter to perform an encoding function in the encoding mode and to perform a decoding function in a decoding mode. | 2009-06-18 |
20090154561 | Compressed video data stream switching method - According to the method, the second data stream is modified prior to transmission, by a replacement of the bidirectional pictures with bidirectional commutation pictures of which the pictures blocks have a null residue and a null motion vector which is either forward or backward, according to the position of the blocks in the picture. | 2009-06-18 |
20090154562 | METHOD OF CODING AND TRANSMISSION OF PROGRESSIVE VIDEO USING DIFFERENTIAL SIGNAL OVERLAY - A method of coding and transmission of a 1080 | 2009-06-18 |
20090154563 | VIDEO CODEC WITH SHARED INTRA-PREDICTION MODULE AND METHOD FOR USE THEREWITH - A video processing device operates in an encoding mode where the processing device encodes an input signal and in a decoding mode where the video processing device decodes the input signal. The video processing device includes an intra-prediction module that generates a best intra prediction mode for each macroblock of the plurality of macroblocks. The intra-prediction module performs an encoding function when the video processing device is in the encoding mode and performs a decoding function when the video processing device is in the decoding mode. | 2009-06-18 |
20090154564 | MOTION ESTIMATION APPARATUS AND METHOD FOR MOVING PICTURE CODING - Provided is a motion estimation apparatus for moving picture coding. The apparatus includes a 1-pel buffer for storing 1-pel unit pixels using luminance signals of a reference frame which correspond to macroblocks of a current frame, a 1-pel estimator for calculating 1-pel unit motion vectors and minimum costs in correspondence to the macroblocks of the current frame and the pixels stored in the 1-pel buffer, a ½-pel interpolator for performing ½-pel unit interpolation using the pixels stored in the 1-pel buffer, a ½-pel buffer for storing the ½-pel unit interpolated pixels, a ½-pel estimator for calculating ½-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ½-pel buffer, the values calculated by the 1-pel estimator, and the macroblocks of the current frame, a ¼-pel interpolator for performing ¼-pel unit interpolation using the pixels stored in the ½-pel and 1-pel buffers, a ¼-pel buffer for storing the ¼-pel unit interpolated pixels, and a ¼-pel estimator for calculating ¼-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ¼-pel buffer, the values calculated by the ½-pel estimator, and the macroblocks of the current frame. | 2009-06-18 |
20090154565 | Video data compression method, medium, and system - A video data compression method, medium, and system. The video data compression method, medium, and system includes receiving image data, generating background model data of the image data, determining a moving object region based on the image data and the background model data, estimating a motion value of the moving object region, and compressing the image data by referring to at least one of the background model data and the estimated motion value. | 2009-06-18 |
20090154566 | MEMORY CELL CIRCUIT, MEMORY DEVICE, MOTION VECTOR DETECTOR, AND MOTION COMPENSATION PREDICTIVE ENCODER - The invention relates to a memory device and the like. The memory device comprises one or more memory block. The memory block has a memory cell array consists of multiple memory cells ( | 2009-06-18 |
20090154567 | IN-LOOP FIDELITY ENHANCEMENT FOR VIDEO COMPRESSION - An encoder for receiving a video frame and performing encoding processes to generate an encoded bitstream includes: a fidelity enhancement block, for performing a fidelity enhancement technique on the video frame utilizing a quad-tree partition, and generating fidelity enhancement information including a parameter associated with the quad-tree partition structure; and an entropy coding block, coupled to the fidelity enhancement block, for encoding the fidelity enhancement information, and embedding the encoded fidelity enhancement information into the encoded bitstream. | 2009-06-18 |
20090154568 | MULTIMEDIA DECODING APPARATUS AND METHOD - A multimedia decoding apparatus and method thereof can accelerate decoding speed. The multimedia decoding apparatus is adapted for decoding a multimedia packet that includes a header portion and a data portion. The multimedia decoding apparatus includes a header parsing module, a storage unit, and a data processing module. The header parsing module receives the multimedia packet and parses the header portion of the multimedia packet to output at least one parameter. The storage unit is coupled to the header parsing module for storing the parameter and the data portion of the multimedia packet. The data processing module is coupled to the storage unit for processing the data portion of the multimedia packet according to the parameter. When the data processing module processes the data portion of the multimedia packet, the header parsing module parses the header portion of another multimedia packet simultaneously. | 2009-06-18 |
20090154569 | Method and Apparatus for Encoding/Decoding - The present invention relates to a multimedia data decoding method and apparatus. The decoding method includes receiving multimedia data including a data area including a plurality of media data areas each corresponding to a plurality of media data; and a media information area including a plurality of track areas each corresponding to the plurality of media data areas; reading the media information area; extracting timing information for sequentially reproducing the media data comprised in the media data area, from the track area; and reproducing the media data, using the media data of the data area and the extracted timing information. According to the present invention, the multimedia data decoding method and apparatus has an effect of being capable of constructing a slide show by only a small amount of multimedia data. Thus, a time taken to process and transmit the multimedia data can reduce. | 2009-06-18 |
20090154570 | METHOD AND SYSTEM TO STREAM AND RENDER VIDEO DATA ON PROCESSING UNITS OF MOBILE DEVICES THAT HAVE LIMITED THREADING CAPABILITIES - A system and method for playing videos on a processing unit of a mobile device with limited threading are provided that yield numerous benefits to a user of the mobile device. | 2009-06-18 |
20090154571 | METHOD AND APPARATUS FOR VIDEO CONFERENCING IN MOBILE TERMINAL - A method and apparatus for video conferencing in a mobile terminal are disclosed. The method includes receiving audio-visual signals comprising a video signal and a voice signal from participating users, selecting one of the audio-visual signals associated with a currently talking user based on properties of the audio-visual signals, decoding all frames of a video signal from the selected audio-visual signal and selectively decoding frames of video signals of the remaining audio-visual signals, and reproducing the decoded frames of the video signals. | 2009-06-18 |
20090154572 | METHOD AND APPARATUS FOR VIDEO DECODING BASED ON A MULTI-CORE PROCESSOR - A multi-core processor device and a video decoding method using a multi-core processor, which can efficiently use system resources in a multi-core processor environment that requires a considerable amount of computation. The multi-core processor device includes a video decoder module which includes a plurality of function modules for performing video decoding; a memory which stores an input bitstream and loads the function modules; and a multi-core processor which includes a plurality of cores that perform a video decoding operation on the input bitstream by using the function modules, the cores including a first core and a second core, wherein, if the first core becomes idle during the video decoding operation, the second core allocates part of a remaining task of the second core to the first core and thus reduces an idle time of the first core. | 2009-06-18 |
20090154573 | Signal Demodulation - A method for processing an analog composite signal in a system has the steps of receiving a composite signal with at least one first signal component and at least one interfering signal component; filtering the composite signal with a filter having a transfer function H(s); sampling the filtered composite signal in periodic intervals wherein each periodic interval has n samples; forming a matrix equation representing the composite signal wherein the matrix equation has a signal vector with the at least first one signal component and the at least one interfering signal component and a matrix comprising weighted coefficients; solving the matrix equation to determine the at least one signal component; outputting the at least one signal component. | 2009-06-18 |
20090154574 | Method And Arrangement For Improved Link Quality Control - In a method of link quality control for communication links between a plurality of mobile terminals and a node in a radio communication system, providing (S | 2009-06-18 |
20090154575 | METHOD AND SYSTEM FOR ADC CALIBRATION IN OFDM SYSTEMS - Aspects of a method and system for ADC calibration in OFDM systems may include receiving a plurality of Orthogonal Frequency Division Multiplexing (OFDM) tones at an OFDM receiver comprising a ping-pong Analog-to-Digital Converter (ADC) and a Fast-Fourier Transform (FFT). A transfer function of the ping-pong ADC may be calibrated via one or more adjustment coefficients at one or more corresponding outputs of the FFT, based on processing of the plurality of the OFDM tones. The plurality of OFDM tones may be received in an OFDM preamble, or the received plurality of OFDM tones may be generated in a calibration signal generator. The output levels of the outputs of the FFT may be equalized to achieve the calibration of the transfer function. The adjustment coefficients may be varied, and said calibrating may be performed dynamically. | 2009-06-18 |
20090154576 | MIMO/Transmit Diversity Channel Estimation - A receive station of the present invention despreads a received signal over both long and short despreading periods to determine individual channel estimates over each symbol period of an extended period for multiple pilot signals. As a result, the present invention provides channel estimates sufficient for both slow and fast fading conditions. The receive station determines an average channel estimate for each of the pilot signals over the extended period by despreading the received signal over the extended period using mutually orthogonal extended spreading sequences. The receive station further determines a combined channel estimate for the pilot signals over each symbol period of the extended period by despreading the received signal over each symbol period using a common spreading sequence. Based on the average and combined channel estimates, the receive station determines individual channel estimates for each pilot signal over each symbol period of the extended period. | 2009-06-18 |
20090154577 | Determination of Pre-Coding Matrix Indicators for Spatial Multiplexing in a Mobile Communications System - A pre-coding matrix is determined in an OFDMA, multiple transmit antenna communication system having a number of sub-carriers grouped into a number, M, of resource blocks. This involves determining a frequency selectivity of a channel through which received signals have propagated. A number N of selected resource blocks is then determined as a function of the frequency selectivity the N selected resource blocks being those for which pre-coding matrices will be determined, wherein N2009-06-18 | |
20090154578 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING AN INITIALSETUPATTRIBUTE MESSAGE IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus of transmitting an InitialSetupAttribute message in a wireless communication system, comprising generating the InitialSetupAttribute message comprising an 8 bit AttributeID field, a 2 bit CQIReportingMode field, a 4 bit VCQIReportInterval field, a 2 bit VCQIMeasureInterval field, a 1 bit EnhancedPilotReportEnabled field, a 4 bit EnhancedPilotReportRatio field, a 4 bit EnhancedPilotReportThreshold field, a 2 bit MinReportInterval field, a 2 bit CQIReportInterval field, a 3 bit CQIReportPhase field, a 2 bit CQIPilotInterval field, a 3 bit CQIPilotPhase field, a 3 bit BFCHReportRate field, a 3 bit SFCHReportRate field, a 3 bit BFCHPowerOffset field, a 2 bit NumBFCHBits field, a 3 bit SFCHPowerOffset field, a 2 bit NumSFCHBits and a 3 bit MandatoryCQICHCTRLReportingPeriod field and transmitting the message over a communication link. A method and apparatus is further provided for receiving and processing the InitialSetupAttribute message. | 2009-06-18 |
20090154579 | QR DECOMPOSITION APPARATUS AND METHOD FOR MIMO SYSTEM - Provided is a QR decomposition apparatus and method that can reduce the number of computers by sharing hardware in an MIMO system employing OFDM technology to simplify a structure of hardware. The QR decomposition apparatus includes a norm multiplier for calculating a norm; a Q column multiplier for calculating a column value of a unitary Q matrix to thereby produce a Q matrix vector; a first storage for storing the Q matrix vector calculated in the Q column multiplier; an R row multiplier for calculating a value of an upper triangular R matrix by multiplying the Q matrix vector by a reception signal vector; and a Q update multiplier for receiving the reception signal vector and an output of the R row multiplier, calculating an Q update value through an accumulation operation, and providing the Q update value to the Q column multiplier to calculate a next Q matrix vector. | 2009-06-18 |
20090154580 | METHOD FOR RECEIVING CONTROL INFORMATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM OF MOBILE COMMUNICATION SYSTEM - The present invention relates to receiving control information in an orthogonal frequency division multiplexing (OFDM) system of a mobile communication system. The present invention includes receiving information related to a number of OFDM symbols in a subframe for receiving first control information, receiving information related to a number of OFDM symbols in the subframe for receiving second control information, decoding the first control information according to the received information related to the number of OFDM symbols in the subframe for receiving the first control information, and decoding the second control information according to the received information related to the number of OFDM symbols in the subframe for receiving the second control information, wherein the number of OFDM symbols for receiving the first control information is less than or equal to the number of OFDM symbols for receiving the second control information. | 2009-06-18 |
20090154581 | Discrete Multitone(DMT) Communications without Using a Cyclic Prefix - A Discrete Multitone (DMT) modulator modulates symbols with subcarriers for providing DMT symbols, wherein the subcarriers are divided into a number of subcarrier subsets such that adjacent DMT symbols formed from different subcarrier subsets | 2009-06-18 |
20090154582 | SYNERGETIC TRANSMITTING SYSTEM FOR DIGITAL BROADCAST SFN AND METHOD THEREOF - A cooperative transmission system for single frequency digital broadcasting network and method thereof are disclosed, said system includes a first double-layer cooperative transmission structure with same frequency and a second double-layer cooperative transmission structure with same frequency, which are vertically aggregated; wherein each of the double-layer cooperative transmission structures with same frequency is made up of a main transmission layer including several main transmitters with same transmitting frequency and an auxiliary transmission layer including several auxiliary transmitters with same transmitting frequency; the electromagnetic wave transmitted by the main transmitters in the first double-layer cooperative transmission structure with same frequency and the electromagnetic wave transmitted by the main transmitters in the second double-layer cooperative transmission structure with same frequency have different frequencies. The present invention makes up the disadvantage of the single frequency network, and can greatly improve the spectrum efficiency of broadcasting channel, the coverage (especially the indoor coverage) of broadcasting signal and the effect of mobile receiving of broadcasting signal. | 2009-06-18 |
20090154583 | METHOD FOR PHYSICAL CONTROL FORMAT INDICATOR CHANNEL MAPPING - A method of mapping symbols of a physical control format indicator channel (PCFICH) is described. A start position of a resource element to map the symbols for the PCFICH is determined by flooring a value, obtained by multiplying the number of resource blocks by a variable proportional to a symbol index for the PCFICH and then dividing the multiplied result by 2, wherein the resource blocks are transmitted in downlink. The symbols are mapped in the start position. Therefore, a problem of wasting resource elements or not being able to implement mapping can be solved by applying a simple mapping rule while mapping symbols of the PCFICH. | 2009-06-18 |
20090154584 | APPARATUS AND METHOD FOR COMMUNICATION IN VARIABLE BANDS - A transmitter according to the present invention includes a mapping unit configured to convert transmitted data into data pieces associated with individual subcarriers, an inverse Fourier transform unit configured to convert the data pieces into a time-series signal, and a symbol generation unit configured to generate symbols for radio transmission from the time-series signal. The mapping unit associates the transmitted data with subcarriers different from predefined multiple subcarriers arranged at even intervals on a frequency axis. A demapping unit of a receiver according to the present invention supplies data comprising the data pieces associated with the subcarriers different from the predefined multiple subcarriers arranged at even intervals on a frequency axis as the data for restoration. | 2009-06-18 |
20090154585 | Channel estimation method and training signal creating method for channel estimation in mimo- ofdm system - Provided are a training signal generation method using impulse trains encoded with orthogonal codes and a channel estimation method using an orthogonal code decoding in a Multiple-Input Multiple-Output-Orthogonal Frequency Division Multiplex (MIMO-OFDM) system. The channel estimation method using the orthogonal code decoding in the MIMO-OFDM system includes the steps of creating a plurality of orthogonal codes depending on the number of receive antennas, decoding a signal received through each receive antenna by using the orthogonal codes, and estimating a channel response by averaging the received signals decoded with the orthogonal codes every OFDM symbol. | 2009-06-18 |