| 36th week of 2008 patent applcation highlights part 31 |
| Patent application number | Title | Published |
|---|
| 20080212615 | Method and Apparatus for Communicating Data in a Communications System - Disclosed are a user equipment and a communications node for communicating data in a communications system including a plurality of user equipments, as well as a method for communicating the data by a user equipment and a method for communicating data by a communications node, wherein data are transmitted from the communications node via a downlink shared channel and received by the user equipment. The user equipment comprises an acknowledger which provides uplink acknowledgements with respect to downlink shared channel transmission for user equipments without a dedicated connection which acknowledgements are received by an acknowledgement receiver included in the communications node. The uplink acknowledgements are transferred through a common uplink feedback channel. | 2008-09-04 |
| 20080212616 | Services For Data Sharing And Synchronization - Systems and methods for sharing and synchronizing data using the addition of synchronization data to a feed that contains data items, and at least a node or endpoint that provides synchronization-related services to other endpoints, are disclosed. Such systems and methods, and client and service endpoints, may use the added synchronization data in multiple ways to share data, incorporate changes consistently, and resolve conflicts. | 2008-09-04 |
| 20080212617 | System and method for synchronization of time sensitive user events in a network - The present disclosure relates generally to systems and methods for synchronization of time sensitive user events in a network. In one example, the method includes receiving an event from a client during a time window and receiving another event from another client during the time window. The events, which are considered to have occurred simultaneously due to their arrival within the same time window, are combined into a picture packet and the picture packet is sent to the first and second clients for execution. | 2008-09-04 |
| 20080212618 | Method and System for Transmitting a Clock Rate on an Ethernet Network Link and Applications Thereof - The invention relates to a method for transmitting a clock rate on a network link, seat of a speed timing signal (DR), consisting of at least synchronizing (A), at an input point (I) of this network, this speed timing signal with a reference external clock rate (ESR) for generating a synchronized speed timing signal (SDR) propagating on the network, and of extracting, at an output point (O) of the network, the reference external clock rate (ESR) from the synchronized speed timing signal (SDR) for utilization. The invention is for providing networks that are seats of a speed timing signal such as FastEthernet and Gigabit Ethernet networks or of higher speed Ethernet networks. | 2008-09-04 |
| 20080212619 | CLOCK SYNCHRONISATION OVER A PACKET NETWORK - A method of synchronising first and second clocks coupled respectively to ingress and egress interfaces | 2008-09-04 |
| 20080212620 | MICROSPHERE FIBER LASER SYSTEM - A microsphere fiber laser system includes a laser beam conducting fiber coated with doped microspheres. One end of the fiber is pumped with a pumping laser. The other end of the fiber is an output. Microspheres with different dopants may be used to obtain outputs of different wavelengths. The microspheres may be attached to an outer surface of a solid fiber or to the internal wall of a hollow fiber. | 2008-09-04 |
| 20080212621 | WAVELENGTH CONVERTER AND TWO-DIMENSIONAL IMAGE DISPLAY DEVICE - It is designed to prevent an efficiency reduction caused by the heat generation of a rare-earth doped fiber in a wavelength converter. | 2008-09-04 |
| 20080212622 | VARIABLE WAVELENGTH LIGHT SOURCE - A gain element and a variable wavelength reflector form a resonator. A wavelength selective element selects a resonance wavelength in the resonator. A beam splitter is provided for monitoring an incident light from the gain element and a reflected light from the variable wavelength reflector. A phase adjustment element is arranged in the resonator. A wavelength-lock control unit locks the resonance wavelength to a desired resonance wavelength by adjusting the phase of the resonance wavelength based on the monitored incident light and by adjusting the variable wavelength reflector based on a ratio between the incident light and the reflected light. | 2008-09-04 |
| 20080212623 | Device and method for material processing by means of laser radiation - In a device for material processing by means of laser radiation, said device comprising a source of laser radiation emitting pulsed laser radiation for interaction with the material; optics focusing the pulsed processing laser radiation to a center of interaction in the material; a scanning unit shifting the positions of the center of interaction within the material, wherein each processing laser pulse interacts with the material in a zone surrounding the center of interaction assigned to said laser pulse so that material is separated in the zones of interaction; and a control unit which controls the scanning unit and the source of laser radiation such that a cut surface is produced in the material by sequential arrangement of zones of interaction, it is envisaged that the control unit controls the source of laser radiation and the scanning unit such that adjacent centers of interaction are located at a spatial distance a≦10 μm from each other. | 2008-09-04 |
| 20080212624 | DUAL PULSE-WIDTH MEDICAL LASER - A laser device that includes a dual pulse-width laser-pumping circuit generates long and short laser pulses. The laser-pumping circuit employs a single power supply with dual high voltage outputs that are selectable under control of a user. The laser device conveniently generates long and short laser pulses or a mix of the two for performing specialized surgical procedures. | 2008-09-04 |
| 20080212625 | SEMICONDUCTOR DEVICE - Disclosed is a semiconductor apparatus comprising an N-type material which cools a silicon semiconductor using the current flowing through the silicon semiconductor. | 2008-09-04 |
| 20080212626 | Semiconductor laser with reduced heat loss - Disclosed is a semiconductor laser. The semiconductor laser includes a semiconductor chip that includes an active layer and emits radiation in a main radiating direction. The active layer is structured in a direction perpendicular to the main radiating direction to reduce heating of the semiconductor chip by spontaneously emitted radiation, and the active layer has the form of a mesa that comprises side walls that form a resonator in such a way as to reduce the spontaneous emission in the active layer in a direction perpendicular to the main radiating direction. | 2008-09-04 |
| 20080212627 | Laser control system, optical scanning device, and image forming apparatus - A control system for a laser source driven by a direct current drive voltage includes a system control board, a laser driver, and a power stabilizing circuit. The system control board is configured to output a control signal based on input data. The laser driver is coupled to the laser source and to the system control board. The laser driver is configured to drive the laser source with the drive voltage to generate a laser beam modulated according to the control signal. The power stabilizing circuit is configured to regulate the drive voltage to a given constant level. The power stabilizing circuit includes a first circuit and a second circuit. The first circuit is configured to boost the drive voltage to a level exceeding the given constant level. The second circuit is configured to limit the boosted drive voltage to the given constant level. | 2008-09-04 |
| 20080212628 | Auto-power control circuit to maintain extinction ratio of optical output from laser diode - The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC circuit according to the invention includes two feedback loops for the modulation I | 2008-09-04 |
| 20080212629 | Ultra-low heat laser - An ultra-low heat laser that does not rely on florescence cooling. Generally, the inventive laser includes a pump source operable at a pump frequency and a gain medium disposed to receive energy from the source and lase at a frequency close to the pump frequency. In the illustrative embodiment, the laser is a solid state laser having a gain medium which is resonantly pumped to lase at a frequency within 5% of the pump frequency. However, in the best mode and in accordance with the present teachings, the gain medium lases at a frequency within 1% of the pump frequency. In the illustrative embodiment, the laser gain medium ion has a rich Stark energy level structure and the laser active gain medium has oscillator strengths at transitions wavelengths that allow an ultra-low quantum defect operation. The pump source has a wavelength output centered to correspond to a predetermined pump band and an emission band subtended by an absorption bandwidth thereof. | 2008-09-04 |
| 20080212630 | Laser apparatus - A laser apparatus includes an excitation light generator for emitting excitation light and a wavelength converter including a solid laser medium for emitting laser light by converting a wavelength of the excitation light. The excitation light generator includes a surface-emitting laser having a first reflector with top and bottom reflectors and an active layer disposed between the top and bottom reflectors. The excitation light generator further includes a second reflector configured to highly reflect the excitation light. The solid laser medium is disposed between the surface-emitting laser device and the second reflector. Reflectivities of the top and bottom reflectors of the first reflector are set so that FWHM of the solid laser medium at the wavelength of the excitation light is greater than a resonance wavelength range of the surface-emitting laser device. | 2008-09-04 |
| 20080212631 | RED SURFACE EMITTING LASER ELEMENT, IMAGE FORMING DEVICE, AND IMAGE DISPLAY APPARATUS - A red surface emitting laser element includes a first reflector, a second reflector including a p-type semiconductor multilayer film, an active layer between the first reflector and the second reflector, and a p-type semiconductor spacer layer between the active layer and the second reflector, the p-type semiconductor spacer layer having a thickness of 100 nm or more and 350 nm or less. | 2008-09-04 |
| 20080212632 | Integrated tapered diode laser arrangement and method for producing it - An integrated tapered diode laser arrangement comprises an injector region ( | 2008-09-04 |
| 20080212633 | SURFACE EMITTING LASER DEVICE - An optical resonator including a lower multilayer reflector and an upper multilayer reflector is arranged on a substrate. A strained active layer having a multiple quantum well structure formed with a quantum well layer and a barrier layer is arranged in the resonator. A current confinement layer including a selectively oxidized portion is arranged on an upper side of the strained active layer. The current confinement layer is arranged at a position where a strain in the selectively oxidized portion influences the strained active layer. | 2008-09-04 |
| 20080212634 | Optical Irradiation Device for the Polarization of Alkali Atoms and a Device for the Hyperpolarization of Noble Gases - An optical irradiation device for the polarization of alkali metal atoms for the hyperpolarization of noble gases by spin exchange includes at least one semiconductor laser device which can generate laser light which, with regard to its wavelength, is suitable for the polarization of the alkali metal atoms. A polarizer effects circular polarization of the laser light generated by the semiconductor laser device. A device for introducing the laser light into a working region in which the alkali metal atoms to be polarized can be present, and a device for defining a wavelength of the laser light, which can couple part of the laser light back into the semiconductor laser device in order thereby to define the wavelength of the laser light at a predetermined wavelength or a predetermined wavelength range. | 2008-09-04 |
| 20080212635 | HIGH EFFICIENCY DISTRIBUTED FEEDBACK (DFB) LASER WITH LOW-DUTY CYCLE GRATING - The invention provides a grating for a distributed feedback laser having decreased diffraction loss with reduced +/−1 order diffraction and scattering loss resulting from the reduced imperfections in the grating fabrication. In various embodiments, the grating has a low duty cycle wherein the ratio of the length of the low-index portion ‘a’ to the length of the pitch of the grating ‘b’ is less than 0.5. Further, in some preferred embodiments, the invention includes a laser, the laser comprising a distributed feedback laser wherein the laser includes a grating having less diffraction and less scattering loss. In various exemplary embodiments, the grating is further a partial grating, thereby providing increased efficiency resulting from a decrease in first-order diffraction loss due to the grating being separated from the front and rear facets and in some exemplary embodiments being situated at the area of lowest electric filed. | 2008-09-04 |
| 20080212636 | Surface-Emission Laser Diode and Fabrication Process Thereof - A surface-emission laser diode comprises a cavity region over a semiconductor substrate and includes an active layer containing at least one quantum well active layer producing a laser light and a barrier layer, a spacer layer is provided in the vicinity of the active layer and formed of at least one material, an upper and lower reflectors are provided at a top part and a bottom part of the cavity region, the cavity region and the upper and lower reflectors form a mesa structure over the semiconductor substrate, the upper and lower reflectors being formed of a semiconductor distributed Bragg reflector having a periodic change of refractive index and reflecting incident light by interference of optical waves, at least a part of the semiconductor distributed Bragg reflector is formed of a layer of small refractive index of Al | 2008-09-04 |
| 20080212637 | DISTRIBUTED FEEDBACK SEMICONDUCTOR LASER INCLUDING WAVELENGTH MONITORING SECTION - In general, a complex-coupled distributed feedback (DFB) semiconductor laser includes a grating formed by grooves through at least a part of an active region of a laser cavity. The complex-coupled DFB laser may be configured with a wavelength monitoring section and may be configured to provide facet power asymmetry. The wavelength monitoring section may include a second-order grating section configured to emit radiation (e.g., vertical radiation) from a side of the DFB laser for monitoring. | 2008-09-04 |
| 20080212638 | Laser - A laser device and a method of pumping a laser gain medium (R) comprise directing pulses of laser light from a pump laser ( | 2008-09-04 |
| 20080212639 | Broadband Laser Lamp with Reduced Speckle - The present invention is directed to a laser resonator emitting visible radiation with reduced speckle noise, wherein said optical resonator is formed by at least two mirrors at both ends of a visible radiation emitting lasing material, wherein that optical resonator enhances multimode operation, so that said visible radiation emitting lasing material emits a spectrally broadened visible radiation, wherein the enveloping function of said spectrally broadened visible radiation has a full width at half maximum (FWHW) within 1 nm to 15 nm. | 2008-09-04 |
| 20080212640 | APPARATUS AND METHOD FOR TESTING A TEMPERATURE MONITORING SUBSTRATE - A testing apparatus for a temperature monitoring substrate includes a heat flow generating unit for generating a heat flow in the temperature monitoring substrate in a depthwise direction of the temperature sensors, wherein the temperature sensors are buried in the depthwise direction. Further, a testing method for a temperature monitoring substrate includes generating a heat flow in the temperature monitoring substrate in a depthwise direction, wherein the temperature sensors are buried in the depthwise direction; processing a temperature of the substrate measured by the temperature sensor under the heat flow by a prescribed method; and determining whether or not an error occurs in the temperature sensor. | 2008-09-04 |
| 20080212641 | APPARATUS FOR THERMAL CHARACTERIZATION UNDER NON-UNIFORM HEAT LOAD - What is disclosed is an apparatus for determining the cooling characteristics of a cooling device used for transferring heat from an electronic device. The apparatus comprising a cooling device thermally coupled to a heat pipe. The heat pipe having an exposed surface for the selective application of heat thereon. A localized heat source is selectively applied to at least one region of the exposed surface. The heat source preferably capable of being varied both positionally relative to the exposed surface and in heat intensity. A heat shield is preferably positioned around the exposed surface of the heat pipe to isolate the operational cooling device from the localized heat source. A temperature detector repeatedly measures a temperature distribution across the exposed surface while the cooling device is in a heat transfer mode. The temperature distribution is then used to thermally characterize the cooling device. | 2008-09-04 |
| 20080212642 | Fluid temperature control device - A fluid temperature control device, which includes: a main body block having a passage channel formed in a surface thereof; a thermal conducting plate that is provided on the surface of the main body block, and covers the passage channel to form a passage for passing a fluid to be temperature controlled; and temperature control means that carries out heat exchanging (heating/cooling), by way of the thermal conducting plate, with the fluid passing through the passage, in which the passage abutting on the thermal conducting plate connects a fluid inlet and a fluid outlet formed in the main body block, and is a single passage having an approximately constant passage cross-sectional area over its entire length. | 2008-09-04 |
| 20080212643 | TEMPERATURE MONITORING DEVICE - A wireless device monitors the temperature of a fluctuating thermal environment. The device may be contained within a thermal cycling machine. The device may comprise sensors, signal translators, an intelligent complex formula converter and protocol arbitration unit, portable power source, electromagnetic transmitter/receiver and antenna to receive various commands and to deliver the instantaneous temperature of various physical points to a control device located outside of the thermal cycling machine. The device is capable of monitoring the temperature fluctuations within a thermal cycler without the need to interfere with normal operation by a cable or wiring harness. In accordance with some embodiments of the present inventions, a temperature monitoring system is disclosed that includes a controller and a temperature monitoring device. The temperature monitoring device may include a core and a cartridge. The core includes a processor and a wireless transmitter. The cartridge includes one or more temperature sensors. The controller is configured to receive temperature data transmitted by the temperature monitoring device. | 2008-09-04 |
| 20080212644 | Temperature sensor and related remote temperature sensing method - A temperature sensor includes a plurality of rectangular shaped amorphous magnetic alloy strips connected magnetically, wherein at least one of the strips has a predetermined ferromagnetic Curie temperature, and another strip has a magnetic permeability well exceeding 2,000. The temperature sensor may be used in a related remote temperature sensing method wherein the sensor is interrogated by a magnetic field and the temperature sensor's response signal is detected electromagnetically. | 2008-09-04 |
| 20080212645 | Sensor configuration for temperature measurement - A sensor configuration ( | 2008-09-04 |
| 20080212646 | Remote temperature sensing device and related remote temperature sensing method - A device and method of remote temperature sensing, the device having a temperature sensor placeable on a rotating item utilizing the temperature sensor being a plurality of rectangular shaped amorphous magnetic alloy strips connected magnetically, wherein at least one of the strips has a predetermined ferromagnetic Curie temperature and another strip has a magnetic permeability exceeding 2,000. | 2008-09-04 |
| 20080212647 | Device For Thermal Coupling - The invention relates to a device ( | 2008-09-04 |
| 20080212648 | METHOD AND SYSTEM FOR MULTIPLE HCI TRANSPORT FOR BLUETOOTH® HOST CONTROLLERS - Aspects of a method and system for multiple HCI transport for Bluetooth® Host controllers may include communicating between a plurality of Bluetooth® hosts and a single Bluetooth® host controller by using one or more Bluetooth® host controller interfaces. Control of the Bluetooth® host controller interfaces may be assigned to one or more of the Bluetooth® hosts. Control of the Bluetooth® host controller interfaces may be switched among different Bluetooth® hosts using various protocol commands may be used to communicate between Bluetooth® hosts to control switching. Communications between Bluetooth® hosts may occur over interfaces different from the Bluetooth® host controller interfaces. Switching may occur without resetting the Bluetooth® hosts and Bluetooth® host controller. | 2008-09-04 |
| 20080212649 | METHOD AND SYSTEM FOR A DISTRIBUTED BLUETOOTH® HOST ARCHITECTURE - Aspects of a method and system for a distributed Bluetooth® Host Architecture may include combining a single main Bluetooth® host with subsidiary Bluetooth® hosts to form a distributed Bluetooth® processing entity that operates as a single Bluetooth® host for a Bluetooth® host controller. An active data connection may be handed over between the main Bluetooth® host and the subsidiary Bluetooth® hosts, where the active data connection may be between the Bluetooth® host controller and the distributed Bluetooth® entity. The active data connection may be an Asynchronous connection-less (ACL) link or a Synchronous Connection-Oriented (SCO) link. Layers of a protocol stack of the main Bluetooth® host may be synchronized with one or more of the subsidiary Bluetooth® hosts to achieve hand over. | 2008-09-04 |
| 20080212650 | COGNITIVE UWB SYSTEM AND COGNITIVE UWB DATA COMMUNICATION METHOD - A cognitive UWB system and a cognitive UWB data communication method. The system includes a cognitive UWB transmitter and a cognitive UWB receiver. The cognitive UWB transmitter includes a channel encoder for correcting error of data, a preamble inserter for inserting a preamble into the data, a mask information inserter for inserting mask information into the data, a cognitive UWB pulse generator for generating a pulse based on the mask information and the channel environment information, a pulse position modulator for modulating the pulse, and a radio frequency transmitter for wirelessly transmitting the data. The cognitive UWB receiver includes a radio frequency receiver for wirelessly receiving data, a synchronizer for synchronizing time of data, a spectrum detector for detecting the channel environment information, a mask information extractor for extracting the mask information, a cognitive UWB pulse generator for generating a pulse, a pulse position modulator for demodulating the pulse, and a channel decoder for correcting error of the demodulated data. | 2008-09-04 |
| 20080212651 | Communication protocol - A communication protocol for ultra-wideband communications is provided. The present invention provides compatibility and interoperability between ultra-wideband communications devices within various types of networks. In one embodiment, combined, or interleaved data frames having both high and low data transfer rate capability are provided. The low data transfer rate may be used for initial discovery of the type of network that is being accessed, and the high data transfer rate may be used to quickly transfer data within networks that have a high data transfer rate capability. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims. | 2008-09-04 |
| 20080212652 | WIRELESS COMMUNICATIONS APPARATUS - MIMO UWB Communications apparatus is configured to send out a channel estimation sequence comprising a plurality of sequentially transmitted symbols in accordance with a first band hopping sequence, sent from one antenna of the apparatus, while another antenna is transmitting another sequence of channel estimation symbols in accordance with another, complementary band hopping sequence. A legacy device will be capable of synchronising with the channel estimation symbols sent in accordance with the first band hopping sequence, while a MIMO receiver will be able to determine channel estimates for all MIMO channels on the basis of the combined channel estimation transmissions. | 2008-09-04 |
| 20080212653 | Signal transmission and reception device - A signal transmission and reception device is disclosed that can be made compact and has wide-band band-pass characteristics. The signal transmission and reception device includes a first filtering unit that is composed of a distributed constant circuit and is capable of eliminating a first frequency component or a second frequency component. The second frequency is higher than the first frequency, and a second filtering unit that attenuates components of frequencies lower than the first frequency or components of frequencies higher than the second frequency. | 2008-09-04 |
| 20080212654 | Determinting a Detection Signal in a Spread Spectrum Communications System - Disclosed is a method of generating a detection signal for detecting energy in a spread-spectrum signal, comprising: de-spreading the spread-spectrum signal by applying a predetermined spreading code to obtain a sequence of de-spread signal symbols ( | 2008-09-04 |
| 20080212655 | SIMPLE AND ROBUST DIGITAL CODE TRACKING LOOP FOR WIRELESS COMMUNICATION SYSTEMS - A simple and robust CTL is used for time tracking of multipath components of a spread spectrum signal transmitted over a wireless multipath fading channel. A digital code-tracking loop includes the implementations of despreading early and late data samples by use of a pseudonoise sequence, an error signal output generated by the despreading, and adjustment for a plurality of on-time, early and late samples, a data rate of a control signal provided as a fractional proportion of a data rate of error signals. | 2008-09-04 |
| 20080212656 | EQUALIZED MODULATION DEMODULATION (MODEM) FORMAT SELECTABLE MULTI ANTENNA SYSYTEM - Method and process for receiving, demodulating, equalizing and processing of Modulation Demodulation Format Selectable (MFS) received signal, received from two or more than two antennas and from diversity receivers. Baseband processing filtering and adaptively equalizing demodulated signals and providing filtered equalized burst operated Time Division Multiplexed (TDM) cross-correlated in-phase and quadrature phase signal, spread spectrum Code Division Multiple Access (CDMA) signal and Orthogonal Frequency Division Multiplexed (OFDM) signals. Demodulation of peak limited cross-correlated OFDM signals. Demodulation and adaptive equalization of receive filtered signal, wherein the received filtered signal is mis-matched to transmit filtered signal. Process for receiving and demodulating MFS signals received from modulated linearly amplified and transmit filtered modulated non-linearly amplified (NLA) signal transmitters. Demodulation and processing of cross-correlated TDM, spread, spectrum and OFDM signals. | 2008-09-04 |
| 20080212657 | ITERATIVE DETECTION AND DECODING FOR A MIMO-OFDM SYSTEM - Techniques to iteratively detect and decode data transmitted in a wireless (e.g., MIMO-OFDM) communication system. The iterative detection and decoding is performed by iteratively passing soft (multi-bit) “a priori” information between a detector and a decoder. The detector receives modulation symbols, performs a detection function that is complementary to the symbol mapping performed at the transmitter, and provides soft-decision symbols for transmitted coded bits. “Extrinsic information” in the soft-decision symbols is then decoded by the decoder to provide its extrinsic information, which comprises the a priori information used by the detector in the detection process. The detection and decoding may be iterated a number of times. The soft-decision symbols and the a priori information may be represented using log-likelihood ratios (LLRs). Techniques are provided to reduce the computational complexity associated with deriving the LLRs, including interference nulling to isolate each transmitted signal and “dual-maxima” approximation. | 2008-09-04 |
| 20080212658 | METHOD AND SYSTEM FOR COMMUNICATION OF SIGNALS USING A DIRECT DIGITAL FREQUENCY SYNTHESIZER (DDFS) - Aspects of a method and system for communication of signals using a direct digital frequency synthesizer (DDFS) are provided. A DDFS may enable generation of signals for down converting and/or up converting radio frequency (RF) signals in reception and transmission operations respectively. The DDFS may utilize a clock signal generated by a PLL and at least one frequency control word generated by a processor. The DDFS may generate the same frequency or different frequencies for the down converting signal and for the up converting signal. When different signals are needed for transmission and reception of RF signals, a first DDFS may be utilized for generating signals for down conversion and a second DDFS may be utilized for generating signals for up conversion. In this regard, a processor may generate separate frequency control words for the first DDFS and for the second DDFS. | 2008-09-04 |
| 20080212659 | Communication Device and Communication Method - Based on interference electric power attributed to a delayed wave, interference electric power attributed to a signal from another non-targeted terminal or a base station, and noise electric power, in order to obtain an index for further exactly representing the signal quality, the combination of a desired-signal/undesired-signal ratio | 2008-09-04 |
| 20080212660 | METHOD AND MULTI-CARRIER TRANSCEIVER WITH STORED APPLICATION PROFILES FOR SUPPORTING MULTIPLE APPLICATIONS - A system and method for supporting multiple applications are described. A digital subscriber line system includes two transceivers in communication over a communication channel using multicarrier modulation. Application profiles are defined for characterizing transmission of information over the communication channel. Each application profile is a parameter set that is associated with a unique set of one or more applications that may become active between the transceivers and specifies the transmission requirements for such applications. Each transceiver stores the application profiles and transmits information over the communication channel according to the one of the stored application profiles. When a change in a number of applications active between the transceivers occurs, a second one of the application profiles is retrieved. The transceivers then transition to transmitting information over the communication channel according to the second application profile. The transitioning can occur without interrupting communication between the transceivers in order to retrain the transceivers. One of the transceivers transmits a message the other transceiver that specifies the second application profile and requests a transition to that second application profile. In one embodiment, the transceiver transmitting the request receives an inverted sync symbol from the other transceiver to synchronize use of the second application profile. | 2008-09-04 |
| 20080212661 | Communication Apparatus and Method of Controlling Same - A communication apparatus including a noise eliminator performing noise reduction processing to cancel a digitized signal received via a receiving antenna, a code decoder, connected to the last stage of the noise eliminator, that decodes the digitized signal that has been subjected to noise reduction processing, a desired-signal detector that limits the noise reduction processing by the noise eliminator when a digitized signal corresponding to a known form of modulation of a desired signal is received by the code decoder, a code interpreter, connected to the last stage of the code decoder, that interprets a decoded signal obtained from decoding by the code decoder, and a controller that disables limitation of the noise reduction processing when a decoded signal not corresponding to a known form of encoding of a desired signal is received by the code interpreter. | 2008-09-04 |
| 20080212662 | APPARATUS FOR MEASURING IQ IMBALANCE - The present general inventive concept relates to apparatuses and/or methods for measuring an IQ imbalance. In one embodiment, a signal generator can provide a first IQ signal of a DC component during a first period and the first IQ signal of a first angular frequency during a second period, an IQ up-conversion mixer can up-convert the first IQ signal by a second angular frequency during the first period and up-convert the first IQ signal by a third angular frequency during the second period to output a second IQ signal, an IQ down-conversion mixer can down-convert the second IQ signal by the third angular frequency to output a third IQ signal and an IQ imbalance detector can obtain a first IQ imbalance (e.g., Rx IQ imbalance) from the third IQ signal during the first period and a second IQ imbalance (e.g., Tx/Rx IQ imbalance) during the second period. | 2008-09-04 |
| 20080212663 | UNIVERSAL INTELLIGENT MODEM - In one general aspect, data transfer between the modem and a processor connected to the modem may be improved using a variable speed buffer. The variable speed buffer may include one or more first-in/first out buffers (FIFOs) and two interfaces. The FIFOs may be connected between the interfaces to form an input data path and an output data path. Each FIFO may store a complete message. Consequently, an entire message may be transferred from the processor at the processor's higher data rate without having to wait for a modulator to modulate the outgoing message at a slower data rate. The modem automatically may use characteristics of an incoming signal to detect which communications protocol is used to send a message, and perform protocol specific functions. The modem may perform system diagnostic functions to improve system performance. | 2008-09-04 |
| 20080212664 | APPARATUS AND METHODS FOR DISPLAYING SIGNAL CHARACTERISTICS - A receiver | 2008-09-04 |
| 20080212665 | System for monitoring the quality of a communications channel with mirror receivers - A system is presented that monitors the quality of a communications channel with mirror receivers. A first receiver and a second receiver, coupled in parallel with the first receiver, receive a data signal transmitted over the communications channel. The second receiver generates an output signal. A signal integrity (SI) processor manipulates the output signal in order to determine the quality of the communications channel. The SI processor samples a phase-shifted version of the output signal, which has a phase shifted relative to a zero reference phase, and analyzes the phase-shifted version of the output signal for bit errors. In an embodiment, the SI processor manipulates the output signal to extract an eye diagram indicative of the quality of the communications channel. The SI processor non-intrusively determines the quality of the communications channel using the second receiver. | 2008-09-04 |
| 20080212666 | Interference rejection in radio receiver - An interference rejection algorithm for a radio receiver is presented. According to the present solution a signal comprising a training sequence and a data sequence is received at the radio receiver. A radio channel response may be estimated from the received training sequence, and interference parameters may be estimated from at least one of the received training sequence and the received data sequence, the estimation of the interference parameters comprising smoothing a frequency spectrum of at least one of the estimated channel response and the estimated interference parameters through averaging. Then, frequency domain interference suppression weights are calculated from the estimated channel response and the interference parameters, and weighting of the received data sequence is carried out with the calculated weights. | 2008-09-04 |
| 20080212667 | Graphical user interface for multi-tap delay - A multi-tap delay has a graphical user interface in which each delay tap is represented by a bar on a time line. The bars are oriented across the time line, the position of each bar on the time line specifying the amount of delay time of the represented delay tap. The length of each bar specifies the value of another parameter of the represented delay tap. | 2008-09-04 |
| 20080212668 | Data Transmission Method, Transmitter and Receiver Therefor - A method for serial data transmission from a transmitter to a receiver has the following steps:
| 2008-09-04 |
| 20080212669 | PULSE GENERATOR, COMMUNICATION DEVICE, AND PULSE GENERATION METHOD - A pulse generator which, by generating a carrier wave having a certain frequency over a predetermined unit duration time, generates a modulated pulse signal, having a pulse width regulated by the unit duration time, which bears information contained in a baseband signal, includes: a pulse width adjustment section which adjusts the pulse width by adjusting the unit duration time of the modulated pulse signal in accordance with a supplied pulse width control signal. | 2008-09-04 |
| 20080212670 | INFORMATION DISTRIBUTION APPARATUS, INFORMATION DISTRIBUTION METHOD, AND INFORMATION DISTRIBUTION PROGRAM - An information distribution apparatus includes a determination unit configured to determine the configuration of a stream including video data and audio data, a creating unit configured to create combination information indicating combinations of video data and audio data making up the stream, based on the results of the determination, and a transmission unit configured to transmit the combination information to a reception apparatus. | 2008-09-04 |
| 20080212671 | MPEG AUDIO ENCODING METHOD AND APPARATUS USING MODIFIED DISCRETE COSINE TRANSFORM - An MPEG audio encoding method, a method for determining a window type when encoding MPEG audio, a psychoacoustic modeling method when encoding MPEG audio, an MPEG audio encoding apparatus, an apparatus for determining a window type when encoding MPEG audio, and a psychoacoustic modeling apparatus in an MPEG audio encoding system are provided. The MPEG audio encoding method comprises performing modified discrete cosine transform (MDCT) on an input audio signal in a time domain; with the MDCT performed MDCT coefficients as an input, performing psychoacoustic model; and by using the result of performing the psychoacoustic model, performing quantization, and packing a bitstream. According to the method, complexity of computation can be reduced and waste of bits can be prevented. | 2008-09-04 |
| 20080212672 | Method and apparatus for delivery of metadata synchronized to multimedia contents - A metadata transmitter synchronized with multimedia contents comprises: a multimedia contents authoring unit for generating and editing multimedia contents; a multimedia contents format converter for compressing the multimedia contents, converting them into a transmission format, and outputting them; a metadata authoring unit for generating and editing metadata for describing the multimedia contents, the metadata including transmission types and transmission information; a metadata format converter for converting the metadata into binary codes, converting the converted metadata into a synchronization format for synchronization with the multimedia contents and a transmission format, and outputting them; and a multiplexer for multiplexing the multimedia contents format and the metadata format respectively output from the multimedia contents format converter and the metadata format converter into a stream, and outputting it. | 2008-09-04 |
| 20080212673 | Systems and Methods for Adaptively Determining I Frames for Acquisition and Base and Enhancement Layer Balancing - The invention includes apparatus, systems and methods for processing multimedia data. A method of processing multimedia data may include encoding a frame of the multimedia data as an I frame, a channel switch frame, and a P frame and selecting the encoded I frame if a size of the encoded I frame and a size of the encoded channel switch frame and the encoded P frame meet a first condition. An apparatus for processing multimedia data may include an encoder for encoding a frame of the multimedia data as an I frame, a channel switch frame, and a P frame and selecting the encoded I frame if a size of the encoded I frame and a size of the encoded channel switch frame and the encoded P frame meet a first condition. | 2008-09-04 |
| 20080212674 | METHOD AND APPARATUS FOR VIDEO DECODING AND DE-INTERLACING - A method for video decoding in a video decoding/de-interlacing display apparatus that utilizes a storage device having four frame buffers is provided. The method includes following steps: (a) decoding video data of a next picture; (b) if the next picture is a B picture, buffering the decoded video data of the next picture into a frame buffer of the storage device not stored with a reference picture nor a present display picture nor a previous display picture; and (c) if step (b) is not applicable, buffering the decoded video data of the next picture into a frame buffer of the storage device stored with the previous display picture. | 2008-09-04 |
| 20080212675 | Motion Vector Estimating Device, and Motion Vector Estimating Method - To provide a motion vector estimating device which is capable of calculating the optimum motion vector by a trade-off between the bit rate of a motion vector and a differential amount, and estimating a motion vector in a pipeline structure at high speed, a motion vector estimating method which enables the same. The motion vector estimating device ( | 2008-09-04 |
| 20080212676 | Motion parameter engine for true motion - Local motion estimation is described herein. Each picture of a video is partitioned into blocks for the local motion estimation. An extended-block FFT is calculated for each block, where the extended-block denotes that a certain area around the block is also included for applying FFT. Extending the block for FFT helps to account for the motion of objects that are moving into or out of the block. Phase correlation is applied to attain a set of Motion Vector (MV) candidates for the blocks, and a cost function is evaluated for each MV. If no MV candidate produces a cost function below a pre-defined threshold, a hierarchical variable block matching search is applied and the process is repeated with blocks for finer resolution. Also, predictive MV candidates are used during the block matching search along with temporal constraints tracking to select an MV that yields the minimum cost function. | 2008-09-04 |
| 20080212677 | Efficient Video Block Mode Changes in Second Pass Video Coding - This disclosure describes techniques for second pass video coding in a multi-pass video coding scenario. The coding modes for some video blocks encoded during a second pass may be changed relative to the coding modes used for such video blocks in the first pass. However, motion information does not change for those video blocks that have the changed modes. In particular, mode changes can be made in the second coding pass relative to the modes used in the first coding pass without changing the manner in which motion information will be derived at the decoder, e.g., due to similarities between the original modes of the first pass and changed modes used in the second pass. The second pass coding techniques may also include quantization parameter adjustments, and the mode changes can cause such quantization parameter adjustments to have more profound refinements effects on the second pass coding. | 2008-09-04 |
| 20080212678 | COMPUTATIONAL REDUCTION IN MOTION ESTIMATION BASED ON LOWER BOUND OF COST FUNCTION - A method for motion estimation comprising the steps of (A) determining whether a cost of encoding one or more prediction parameters for a current search position is less than a current best cost, (B) when the cost of encoding the one or more prediction parameters for the current search position is less than the current best cost, updating the current best cost if the current best cost is greater than or equal to a sum of the cost for encoding the one or more prediction parameters for the current search position and a distortion measurement for the current search position and (C) ending the search when the current best cost is less than or equal to the cost of encoding the one or more prediction parameters for the current search position and less than a minimum cost for encoding one or more prediction parameters for one or more remaining search positions. | 2008-09-04 |
| 20080212679 | Motion estimation with dual search windows for high resolution video coding - A memory-efficient motion estimation technique for high-resolution video coding is proposed. The main objective is to reduce the external memory access, especially for limited local memory resource. The reduction of memory access can successfully save the notorious power consumption. The key to reduce the memory access is based on center-biased algorithm in that the center-biased algorithm performs the motion vector searching with the minimum search data. While considering the data reusability, the proposed dual-search-windowing approaches use a secondary windowing as an option per searching necessity, by which the loading of search windows can be alleviated and hence reduce the required external memory bandwidth, without significant quality degradation. | 2008-09-04 |
| 20080212680 | METHOD AND SYSTEM FOR TRANSCODING VIDEO DATA - A first method of transcoding video data is disclosed that generates a motion vector for a macroblock encoded as a dual prime macro block that has a direct motion vector, and differential motion vector for its two fields respectively. Another method of transcoding includes replacing a skipped P-macroblock that has been used to backward predict a B-Frame with a P-macroblock having a motion vector of zero. Another method of transcoding includes replacing a skipped B-macroblock with a macroblock having a motion vector from a macroblock of the same frame of the skipped B-macroblock that is not co-located. | 2008-09-04 |
| 20080212681 | VIDEO ENCODING AND VIDEO/AUDIO/DATA MULTIPLEXING DEVICE - The present invention provides a buffer architecture and latency reduction mechanism for buffering uncompressed/compressed information. This combination provides for a proficient division of the encoding task and quicker through-put time. The invention teaches a single chip digital signal processing device for real time video/audio compression comprising a plurality of processors, including a video input processor, a motion estimation processor, a digital signal processor, and a bitstream processor, wherein processing and transfer of the signals within the device is done in a macroblock-by-macroblock manner. The device can include a multiplexing processor that is comprised of a storage unit which buffers a compressed video bitstream and a processor which retrieves the compressed video bitstream from the storage unit and produces a multiplexed data stream whereby the compressed video bitstream is processed in a pipeline manner. | 2008-09-04 |
| 20080212682 | Reduced resolution video transcoding with greatly reduced complexity - A method for receiving encoded MPEG-2 video signals and transcoding the received encoded signals to encoded H.264 reduced resolution video signals, including the following steps: decoding the encoded MPEG-2 video signals to obtain frames of uncompressed video signals and to also obtain MPEG-2 feature signals; deriving H.264 mode estimation signals from the MPEG-2 feature signals; subsampling the frames of uncompressed video signals to produce subsampled frames of video signals; and producing the encoded H.264 reduced resolution video signals using the subsampled frames of video signals and the H.264 mode estimation signals. | 2008-09-04 |
| 20080212683 | Image Decoding Device, Image Encoding Device and System LSI - An image decoding device according to the present invention is an image decoding device responding to decoding of an image encoding method selecting an encoding table and an encoding format to use according to the kind of a parameter included in encoded data and comprises a bit stream processing unit converting a bit stream of the encoded data into an intermediate format and an image processing unit decoding data converted into the intermediate format and converting the same into image data. The bit stream processing unit and the image processing unit start independently. An image encoding device according to the present invention, in the same manner, comprises an image processing unit converting image data to be encoded into an intermediate format and a bit stream processing unit encoding the data converted into the intermediate format and converting the same into a bit stream. Thereby, image encoding and decoding processings with a low operation frequency and low power consumption is realized. | 2008-09-04 |
| 20080212684 | Video Decoder with Hybrid Reference Texture - The present invention relates to a video decoder (DEC) for decoding a bit stream (BS) corresponding to pictures (P) of a video signal, the coded pictures being likely to include macroblocks coded in a progressive and in an interlaced way. The decoder includes a decoding unit (DEU) for decoding macroblocks coded in a progressive way, and a hybrid reference construction unit (HRCU) for constructing, for each reference picture, a hybrid reference texture (HRT) which has the property of representing said reference picture in a frame-based and in a field-based manner. Said hybrid reference texture is used by said decoding unit for decoding interlaced macroblocks. | 2008-09-04 |
| 20080212685 | System for the Capture of Evidentiary Multimedia Data, Live/Delayed Off-Load to Secure Archival Storage and Managed Streaming Distribution - This system is a unique development of apparatus and enabling software functionality specifically aimed at surveillance and monitoring activities and the statutes and administrative policies that govern them. The system incorporates video and audio capture devices and a conventional computer in which unique software functionality creates an authenticating evidentiary audit trail (frame-by-frame) during an optimal compression process while presenting a live view of the captured video data. This unique and uniquely combined process directly supports many public safety and other security operations with their need for a live monitoring view and a minimum capacity storage archive. The unique data construct also allows for such inventive features as a graphical content catalog to aid in finding captured video and/or audio, the evidentiary analysis functionality of variable speed forward and backward playback and a fully managed storage and distribution sub-system again with incorporated audit and activity tracking. | 2008-09-04 |
| 20080212686 | METHOD OF REDUCING A BLOCKING ARTIFACT WHEN CODING MOVING PICTURE - A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S | 2008-09-04 |
| 20080212687 | High accurate subspace extension of phase correlation for global motion estimation - A method for achieving high sub-unit accuracy during global motion estimation of sequential video frame images is described herein. The method estimates the global motion using an existing phase-correlation approach, and further refines it to a sub-unit level using the neighborhood values of the phase correlation surface peak The method determines the sub-unit displacement direction by examining the signs of the peak of phase correlation surface and its two nearest neighbors. The method determines the sub-unit displacement magnitude by applying the ratio of associated phase correlation values to a 5 | 2008-09-04 |
| 20080212688 | Method for Reception of Dvb-H Signals and Dvb-H Receiver - The invention relates to a Method for reception of DVB-H signals wherein a MPEG transport stream (MPEG-TS) is grouped into packets belonging to a certain IP data stream and forming bursts in time slices, the MPEG-TS is modulated into OFDM symbols, these symbols are grouped in frames, the frames themselves are grouped in superframes. A receiver is notified about a relative time from a first burst to transmission of the next burst and the receiver is switched off between the first and the next burst. The invention further relates to a DVB-H receiver. The invention solves the problem is to reduce the power consumption of DVB-H receivers by reducing the switch on time of the receiver by providing the receiver with means for maintaining accurate course symbol timing within the symbol with an accuracy better than 25 ppm and by switching on the receiver exactly at the superframe boundary. | 2008-09-04 |
| 20080212689 | Intelligent water ring scan apparatus and method based on quality factor, and video encoding/decoding apparatus and method using the same - Provided are intelligent water ring scan apparatus and method thereof, image encoding/decoding apparatus using the water ring scanning and method thereof, and a computer-readable recording medium for recording a program that implements the methods. The apparatus or method of this research selectively improves the image quality of a particular image part that needs to be encoded with priority by transmitting the image data of the particular image part suitably for a human visual system so as to provide a visually improved image. The encoding apparatus of this research differentiates the amount of image data depending on the significance of a certain image part to process the image in various qualities suitably for the human visual system. The methods of this research can be applied to an image encoding/decoding process. | 2008-09-04 |
| 20080212690 | TRANSCODER MEDIA TIME CONVERSION - In general, this disclosure describes techniques of compensating for differences between a clock associated with an input stream of media data and a clock associated with an output stream of media data. Due to drift between a clock that governs the rate at which a transcoder receives media data units (“MDUs”) and a clock that governs the rate at which the transcoder outputs MDUs, the transcoder may receive MDUs at a rate that is faster or slower than a rate at which the transcoder outputs the MDUs. The transcoder compensates for such differences by identifying sets of received MDUs that account for a time equal to an output period minus a correction magnitude, modifying the identified sets of MDUs such that the sets of MDUs account for a time equal to the output period, and outputting the modified sets of MDUs as part of the output stream. | 2008-09-04 |
| 20080212691 | Signalling Method and Apparatus - An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecutive rising or consecutive falling edges, a transmission path for the signal from modulator to a demodulator, where the demodulator is arranged to detect the signal edge and store a record of the signal around that edge and compare a subsequent part of the signal with that record thereby to detect a like edge and detect the time difference between like edges. Such a system need not detect the precise position of the edge but detects that an edge has occurred within a short time frame, and retains an image of the signal during that period. That image is compared with a subsequent part of the signal, and where the subsequent signal differs only minimally from the record the system deems that a second like edge has occurred. Thus, although the precise position of the edge may or may not be detected by this system, the time delay between respective like edges is detected. The transmission path can be imperfect, for example inductive. The system is capable of sending recognisable signals along a three-phase electrical supply cable. The invention is particularly applicable to the supply of information from downhole sensors in the oil and gas extraction industries. Two signals can be sent simultaneously by also detecting unlike edges and the time difference therebetween. Multiple sources of data can be included consecutively. | 2008-09-04 |
| 20080212692 | Method and apparatus for multimode, point to multipoint base station capable of supporting both OFDM and OFDMA subscribers - A method and system for providing multilingual wireless communications network are disclosed. The present invention discloses a mechanism of receiving and/or transmitting an OFDM data stream using IEEE 802.16-2004 standard and an OFDMA data stream using IEEE 802.16e standard. A timing division duplexing (“TDD”) frame is configured to contain data that has different standards. At least a portion of OFDM data is allocated in a portion of the TDD frame while a portion of OFDMA data is allocated in another portion of the TDD frame. The TDD frame is subsequently transmitted to both OFDM subscriber stations and OFDMA subscriber stations. | 2008-09-04 |
| 20080212693 | Transmitter and Receiver for Ultra-Wideland Ofdm Signals Employing a Low-Complexity Cdma Layer for Bandwidth Expansion - A method and apparatus for transmitting and receiving high-bandwidth OFDM signals, while limiting the complexity of the OFDM signal processing is described. Bandwidth expansion is achieved by repetition of whole OFDM symbols with the polarity of repetitions determined by a long PN code. This technique ensures a perfectly white spectrum. Use of zero-suffix OFDM symbols allows a large tolerance to multipath channels, even while maintaining a single, low-rate RAKE finger for despreading in the receiver. | 2008-09-04 |
| 20080212694 | Signal decoding systems - We describe a method of decoding a DCM (dual carrier modulation) modulated OFDM signal, the method comprising: inputting first received signal data representing modulation of a multibit data symbol onto a first carrier of said OFDM signal using a first constellation; inputting second received signal data representing modulation of said multibit data symbol onto a second, different carrier of said OFDM signal using a second, different constellation; determining a combined representation of said first and second received signal data, said combined representation representing a combination of a distance of a point representing a bit value of said multibit data from a constellation point in each of said different constellations; and determining a decoded value of a data bit of said multibit data using said combined representation. | 2008-09-04 |
| 20080212695 | Transmission Methods and Apparatus in Multi-Band Ofdm Wideband Systems - Methods and apparatus for use in a multi-band OFDM wideband transmission systems are disclosed. A frame of source data is mapped by a transmitter for transmission using a first mapping. The frame of source data is then mapped by the transmitter for retransmission using a second mapping to increase frequency diversity. A receiver may identify source data that experiences fading and communicate the tone/frequency on which the fading occurred to the transmitter so that the transmitter may map the source data that experienced fading during transmission to another tone/frequency for retransmission. | 2008-09-04 |
| 20080212696 | Radio-Communication Device and Radio-Communication Method - The disclosed invention determines whether a reception packet is an MM packet or a GF packet with precision and avoids unnecessary decoding operations performed at the GF-packet-reception time and inefficient communications. | 2008-09-04 |
| 20080212697 | Doppler Dependent Power Control and Sub-Carrier Allocation in ofdm Multiple Access Systems - Digital data Symbols from a transceiver are transmitted to at least two remote transceivers in a wireless Communications System employing Orthogonal Frequency Division Multiplexing, wherein a number of available sub-carriers are shared between said remote transceivers. Information about magnitudes of Doppler effect experienced by the remote transceivers is provided; sub-carriers are allocated to each remote transceiver in dependence of the information about magnitudes of Doppler effect; and a power level transmitted to each of said remote transceivers is controlled in dependence of the Information about magnitudes of Doppler effect. In this way the reception of OFDM Signals for transceivers moving at high speed and thus experiencing a high Doppler effect is improved without degrading the reception quality for transceivers with low or no Doppler effect. Thus the Performance of a System based on OFDM and multiple access is improved. | 2008-09-04 |
| 20080212698 | Method and Apparatus For Allocating a Plurality of Data Symbols in a Wireless Communication System - A method of allocating a plurality of data symbols from a transmitting end using multiple carrier modulation (MCM) is disclosed. More specifically, the method includes receiving the plurality of data symbols from a serial-to-parallel converter, grouping the plurality data symbols into at least one data symbol group, wherein the at least one data symbol group is formed by grouping a specified number of neighboring data symbols, and allocating the at least one data symbol group to at least one subcarrier group, wherein the at least one subcarrier group is formed by grouping a plurality of subcarriers. | 2008-09-04 |
| 20080212699 | COMMUNICATION CONTROL APPARATUS AND CONTROL METHOD THEREOF, COMMUNICATION APPARATUS AND CONTROL METHOD THEREOF, WIRELESS COMMUNICATION SYSTEM, PROGRAM, AND STORAGE MEDIUM - A communication control apparatus that performs wireless communication with a plurality of communication apparatuses, the communication control apparatus comprises: a grouping unit adapted to group the plurality of communication apparatuses based on the relative positions of each of the plurality of communication apparatuses; a notification unit adapted to notify each of the plurality of communication apparatuses of the group to which that communication apparatus belongs and of a communication slot allocated to that group; and a transmission unit adapted to transmit transmission data at a predetermined timing. | 2008-09-04 |
| 20080212700 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL MESSAGE IN A MIMO MOBILE COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving a control channel message in a Multiple Input Multiple Output (MIMO) mobile communication system are provided, in which a control channel message generator generates a pilot/MIMO field indicating at least one of a pilot format, a MIMO transmission rank being a number of transmission layers for transmitting encoded packet streams, and precoding information for MIMO data transmission, and outputs a control channel message including the pilot/MIMO field, and a transmission module converts the control channel message to a radio signal and transmits the radio signal to an MS. In the case of using common pilots for data demodulation and at least one of knock-down precoding and ready-made precoding for the MIMO transmission, the pilot/MIMO field includes information about the at least one precoding. In the case of dedicated pilots for data demodulation, the pilot/MIMO field indicates a format of the dedicated pilots. | 2008-09-04 |
| 20080212701 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL SIGNALING FOR MIMO TRANSMISSION - A method and apparatus for processing multiple-input multiple-output (MIMO) transmission are disclosed. A wireless transmit/receive unit (WTRU) receives downlink control information including WTRU-specific MIMO and transport format information and MIMO information for all other WTRUs assigned to the same resource. The WTRU processes received MIMO data based on the downlink control information. The downlink control information may also include transport format information for all other WTRUs assigned to the same RB. The downlink control information may be transmitted via WTRU-specific control signaling. All WTRUs' MIMO and/or transport format information may be transmitted via resource-specific common control signaling. The downlink control signaling format may include at least one of a number of streams for the WTRU, a number of active WTRUs assigned to the same resource, a spatial channel identity for the WTRU, a MIMO mode, a precoding matrix index and a precoding vector index. | 2008-09-04 |
| 20080212702 | PRECODED PILOT TRANSMISSION FOR MULTI-USER AND SINGLE USER MIMO COMMUNICATIONS - The disclosed method and apparatus include an WTRU-specific reference signal scheme that provides efficient precoded pilot transmission and effective channel estimation using dedicated pilot signals. The disclosed methods are efficient for both a single user (SU) and a multi user (MU) Multiple Input Multiple Output (MIMO) system. | 2008-09-04 |
| 20080212703 | METHOD AND APPARATUS FOR SUBCHANNEL ASSIGNMENT FOR SUPPRESSING INTERANTENNA INTERFERENCE IN OFDMA SYSTEM - Disclosed is a method and an apparatus for subchannel assignment for suppressing inter-antenna interference in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system based distributed wireless communication system equipped with antennas that are randomly distributed in a geographical manner and can simultaneously communicate with multiple Subscriber Stations (SSs). The method includes selecting and obtaining access to distributed antennas which satisfy the data transmission rate that an SS requires and with which the SS can communicate; re-queuing a distributed antenna having the maximum transmitted power within the same cell in high priority; and assigning subchannels to the relevant distributed antennas in an order from the relevant distributed antenna having the high priority. | 2008-09-04 |
| 20080212704 | MIMO TRANSMISSION AND RECEPTION METHODS AND DEVICES - In a wireless transmitting device which performs transmission by an OFDM using a plurality of subcarriers orthogonal to each other, a plurality of preambles to which a plurality of different subcarrier groups selected from a plurality of subcarriers within an OFDM signal band are allocated are transmitted by using a plurality of transmit antennas, and data is transmitted by using the antennas after the preambles are transmitted. | 2008-09-04 |
| 20080212705 | RADIO COMMUNICATION METHOD, RADIO TRANSMITTING APPARATUS, AND RADIO RECEIVING APPARATUS - A duplicating section duplicates a bit sequence to be input, and a 16QAM section modulates a bit sequence of a duplicating source to form a symbol, a 16QAM section modulates the duplicated bit sequence to form a symbol, an S/P section parallel converts the symbol sequence input in series, an S/P section parallel converts the symbol sequence input in series, and an IFFT section | 2008-09-04 |
| 20080212706 | Transmission Method and Transmission System - A transmission device ( | 2008-09-04 |
| 20080212707 | METHOD AND SYSTEM FOR A DIGITAL POLAR TRANSMITTER - Aspects of a system for a digital polar transmitter may include a digital to analog converter circuit (DAC), for which an analog voltage and/or current step size generated in response to a sequence of received binary numbers may be dynamically programmable based on an input control signal. The input control signal may be based on an amplitude modulation (AM) signal. The DAC may receive the sequence of binary numbers, generated based on a phase modulation (PM) signal, from an accumulator circuit. The dynamically programmable-step-size DAC may generate an analog signal, which is amplified by a power amplifier circuit (PA) and transmitted via an antenna. The dynamically programmable-step-size DAC may enable utilization of a linear PA circuit. | 2008-09-04 |
| 20080212708 | Method and Apparatus for Carrier Recovery in a Communications System - A satellite communications system comprises a transmitter, a satellite transponder and a receiver. The transmitter transmits an uplink layered modulation signal having an upper layer and a lower layer to the satellite transponder, which broadcasts the layered modulation signal downlink to one, or more, receivers. The receiver receives the layered modulation signal (the received signal) and performs demodulation and decoding of the lower layer signal component thereof by using a recovered carrier to derotate the received signal, wherein the recovered carrier is developed by a carrier recovery process driven by soft decisions with respect to the upper layer signal component of the received signal. | 2008-09-04 |
| 20080212709 | Three phase and polarity encoded serial interface - A high speed serial interface is provided. In one aspect, the high speed serial interface uses three phase modulation for jointly encoding data and clock information. Accordingly, the need for de-skewing circuitry at the receiving end of the interface is eliminated, resulting in reduced link start-up time and improved link efficiency and power consumption. In one embodiment, the high speed serial interface uses fewer signal conductors than conventional systems having separate conductors for data and clock information. In another embodiment, the serial interface allows for data to be transmitted at any speed without the receiving end having prior knowledge of the transmission data rate. In another aspect, the high speed serial interface uses polarity encoded three phase modulation for jointly encoding data and clock information. This further increases the link capacity of the serial interface by allowing for more than one bit to be transmitted in any single baud interval. | 2008-09-04 |
| 20080212710 | METHOD AND APPARATUS FOR FREQUENCY DIVISION MULTIPLEXING - A radio transmitter and receiver arrangement includes a transmitter and a receiver. The transmitter generates an electromagnetic carrier that varies in frequency throughout a channel interval, and modulates the carrier with an information signal during the channel interval, whereby the carrier is modulated both in frequency and in accordance with the information signal during the channel interval. The receiver receives the carrier that is modulated both in frequency and in accordance with the information signal, generates a detection signal that varies in frequency throughout the channel interval, and mixes the carrier and the detection signal to recover the information signal. | 2008-09-04 |
| 20080212711 | IQ-Imbalance - The invention relates to a method for correcting an IQ-imbalance (In-phase and Quadrature) of an IQ-based direct conversion receiver ( | 2008-09-04 |
| 20080212712 | Power Control Device - The invention relates to a power control device for a power output stage. A forward signal corresponding to a wave advancing on a wall feed line and a return signal corresponding to a wave returning on the wave feed line is obtained by means of a directional coupler and is supplied to a controller after narrow-band selection for controlling the output of the power output stage. Narrow-band selection is not carried out in the baseband but on an intermediate frequency level above the baseband. | 2008-09-04 |
| 20080212713 | METHOD AND APPARATUS FOR GENERATING TRAINING SEQUENCE CODE IN A COMMUNICATION SYSTEM - A method and apparatus for generating a TSC in a communication system are provided, in which a pair of sequences A and B having auto-correlation and cross-correlation properties are generated and the TSC is generated by inserting guard sequences Z each having z zero symbols in the most significant bits of the sequences A and B. | 2008-09-04 |
| 20080212714 | Spatial multiplexing architecture with finite rate feedback - A spatial multiplexing architecture is described for a MIMO communications system wherein the receiver feeds a number of bits of channel state information back to the transmitter. The architecture includes jointly designed ordered detection at the receiver and rate/power allocation at the transmitter. The receiver feeds back a finite number of bits to the transmitter regarding the detection order. The transmitter utilizes this detection order information to assign rates and powers. A Greedy ordering Rate Tailored (GRT-SMA) scheme is described which includes independent coding/decoding on each layer. | 2008-09-04 |
