Patents Issued in February 1, 2007
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Publication number: 20070025408Abstract: The present invention provides a long-wavelength VCSEL system providing a buried layer, growing a top spacer layer on the buried layer, forming an active layer on the top spacer layer, and creating a current confinement structure in the buried layer with a post epitaxy ion implantation.Type: ApplicationFiled: July 29, 2005Publication date: February 1, 2007Inventors: Bernhard Koelle, Chung-Yi Su
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Publication number: 20070025409Abstract: Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the microring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed.Type: ApplicationFiled: February 15, 2006Publication date: February 1, 2007Inventors: Xiaodong Yang, Chee Wong
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Publication number: 20070025410Abstract: A ring resonator structure includes a semiconductor substrate, a core, and a cladding. Either the core or the cladding comprises chalcogenide glass to improve electromagnetic confinement in the ring resonator structure.Type: ApplicationFiled: July 14, 2006Publication date: February 1, 2007Inventors: Anuradha Agarwal, Jeujun Hu, Lionel Kimerling
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Publication number: 20070025411Abstract: A pin for use in connecting graphite electrodes into a joint, where the pin has at least one male tang having a tang factor, defined as the ratio of male tang length to diameter of the electrode into which hit is to be threaded, of at least about 0.60.Type: ApplicationFiled: July 20, 2006Publication date: February 1, 2007Inventors: Robert Smith, Lionel Burton Batty, Philip Coleman
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Publication number: 20070025412Abstract: There are a number of sensors (2, 22) such as thermocouples which can provide a putative measurand signal which is within a predicted range for such signals whilst the sensor is incorrectly operating, such as as due to an open circuit. Techniques and processes are available to determine by interrogation sensor operational validity, but these can distort the measurand signal if correct. By time division multiplex techniques the present arrangement takes a putative measurand signal from a sensor (2, 22) in order that either within the same time division or more normally a separate time division, an interrogation of the sensor is performed in order to determine accuracy and therefore validity of the sensor 22.Type: ApplicationFiled: July 6, 2006Publication date: February 1, 2007Applicant: ROLLS-ROYCE PLCInventor: Peter Webb
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Publication number: 20070025413Abstract: Heat transfer test assemblies for monitoring and recording fouling of aqueous systems are disclosed. The heat transfer test assemblies include an outer tube member, a heating rod positioned within the outer tube member, a ribbed tube sleeve fitted over the heating rod and thermocouples for sensing the wall temperature of heating rod. The disclosed heat transfer test assemblies enable improved monitoring of systems employing enhanced heat exchanger tubes. Monitoring and recording apparatuses including the heat transfer test assemblies are also disclosed.Type: ApplicationFiled: March 31, 2006Publication date: February 1, 2007Applicant: Ashland Licensing and Intellectual Property LLCInventors: George Hays, Eric Hoernle
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Publication number: 20070025414Abstract: Described herein is a system for controlling an air-conditioning system within an environment, in particular the passenger compartment of a vehicle, said system comprising a plurality of sensors designed to detect quantities representing the thermal comfort of the occupants and an electronic control unit (ECU), which calculates, on the basis of said quantities, a temperature indicating the thermal comfort of the occupants of the environment, on the basis of which the actuator devices of the air-conditioning system are driven.Type: ApplicationFiled: July 5, 2006Publication date: February 1, 2007Inventors: Stefano Mola, Carloandrea Malvicino
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Publication number: 20070025415Abstract: An assembly method and structure of an electronic clinical thermometer is disclosed. The thermometer can be disassembled or assembled as required, wherein one of the detachable modules such as the measuring body has an incomplete electronic clinical thermometer circuit lacking at least two elements, and these electronic elements are mounted within the other module such as the measuring probe, so that the two modules when attached together form a complete clinical thermometer.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Inventor: Sanlian Chen
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Publication number: 20070025416Abstract: A clinical thermometer is disclosed. The thermometer comprises a housing, circuit board, base seat, humming plate and spring characterized in that the base seat has a speaker box slot and a speaker cover plate with the humming plate mounted therein, circuit connection is formed between the humming plate and the circuit board by the spring, and the length of the base seat is shorter than the circuit board such that the electronic components which are required to be inspected are exposed outside the base seat, thereby minimizing the inspection time and replacement time of the components.Type: ApplicationFiled: July 27, 2005Publication date: February 1, 2007Inventor: Hui-Ming Chen
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Publication number: 20070025417Abstract: A system (600) and method (500) are presented for mitigating a transient in processing a received signal (710) in a signal path associated with an Ultra Wideband (UWB) receiver. An impending processing event associated with processing the received signal is detected. A processing element (201, 202, 203, 204) capable of generating a transient when activated, is activated prior to the processing event such that the transient is mitigated or cleared when the processing event occurs and the received signal is processed. At least a portion of the processing element is normally deactivated so as to conserve power. The processing event includes one or more of: an acquisition processing event, a lock processing event, and a tracking processing event associated with the received signal in the signal path.Type: ApplicationFiled: July 28, 2005Publication date: February 1, 2007Inventors: Deepak Joseph, Timothy Miller
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Publication number: 20070025418Abstract: A method and system of providing digital communications over frequencies concurrently utilized for analog communications. In one embodiment, the method (400) includes the step of establishing (410) a digital channel including two or more analog channels that are concurrently used to provide analog communications. A spread spectrum digital waveform is generated (420) having its energy spread throughout the bandwidth of the digital channel. The spread spectrum digital waveform is modulated (420) to include information to be communicated digitally and transmitted (430) over the digital channel. The transmitted modulated spread spectrum digital waveform is received (450) and demodulated (460) to obtain the information.Type: ApplicationFiled: July 29, 2005Publication date: February 1, 2007Inventors: FM Bay, Daniel Heil
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Publication number: 20070025419Abstract: A digital circuit configured to spread a clock train spectrum includes a clock configured to generate the clock train, and a variable divider configured to divide the frequency of the clock train by a temporally-varying-divider value to modulate the clock train and generate a dithered clock train. The circuit further includes a first accumulator configured to accumulate the dithered clock train to generate a frequency modulation waveform, and a second accumulator configured accumulate the frequency modulated waveform to generate a phase modulation signal. The circuit further includes a phase-value calculator configured to calculate the temporally-varying divider value based on the phase modulation signal; and a closed-loop control circuit configured to track and filter the modulation of the dithered clock train to generate a second clock train that is the spread spectrum of the first mentioned clock train.Type: ApplicationFiled: October 6, 2005Publication date: February 1, 2007Inventor: Jody Greenberg
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Publication number: 20070025420Abstract: A method of transmitting information on ultra-bandwidth systems is provided. The method can double the data rate of existing methods. The method comprises sending and receiving an ultra-wideband pulse. The ultra-wideband pulse comprises at least a dual pulse (two sub-pulses) of time Tw and is sent during a frame interval of time Tf. The sub-pulses are sent repeatedly, and Tf is larger than Tw. The method can permit multipath energy collection, simple timing acquisition, simple implementation and robustness.Type: ApplicationFiled: April 6, 2006Publication date: February 1, 2007Inventor: Xiaodai Dong
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Publication number: 20070025421Abstract: Multicarrier spreading codes map data symbols to a sequence of orthogonal pulse shapes generated from a superposition of orthogonal subcarriers. The orthogonal subcarriers may include OFDM subcarriers, frequency-hopped subcarriers, or chirped subcarriers. Multicarrier spread spectrum may employ a combination of orthogonal frequency division multiple access, time division multiple access, and code division multiple access. Receivers configured to use multi-user detection may employ a combination of time-domain processing and frequency-domain processing.Type: ApplicationFiled: June 14, 2006Publication date: February 1, 2007Inventor: Steve Shattil
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Publication number: 20070025422Abstract: It is an object to propose a way to assign channelization that is applicable to a case in which the number of multiplexing of DPDCHs (Dedicated Physical Data Channels) is at least five for overshoot of HPSK (Hybrid Phase Shift Keying) modulation. Assignment of channelization codes is set as follows. For all possible combinations of channelization assigned to given data channels and control channels, a transition ?1 from the first chip to the second chip and a transition ?2 from the third chip to the fourth chip are obtained. For each transition, 0 degrees or 180 degrees is desirable, and 90 degrees is the worst, so that a combination is obtained in which squares of sine of respective transitions become the smallest. Consequently, by obtaining a combination that makes sin2 ?1+sin2 ?2 the smallest, the one that is close to the most desirable combination can be obtained.Type: ApplicationFiled: June 6, 2005Publication date: February 1, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Koutarou Sugisawa, Hideji Wakabayashi
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Publication number: 20070025423Abstract: A weighted open loop power control system for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication comprises a receiver and a transmitter. The receiver includes a reference channel data generator, a spreading and training sequence insertion device, an amplifier, a summer, a modulator, and an antenna. The transmitter includes a demodulator configured to receive a transmitted signal from the receiver, a channel estimation device, a data estimation device, and a weighted open loop power controller. The weighted open loop power controller includes a power measurement device, a pathloss estimation device configured to receive an interpreted power level from the data estimation device and estimate the pathloss and update a long term average of the pathloss, a quality measurement device, and a transmit power calculation device for determining the transmitter's power level and to control the receiver's amplifier.Type: ApplicationFiled: October 6, 2006Publication date: February 1, 2007Applicant: InterDigital Technology CorporationInventors: Ariela Zeira, Sung-Hyuk Shin
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Publication number: 20070025424Abstract: A baseband processing module includes an RX interface, a rake receiver combiner module, and may include additional components. The RX interface receives the baseband signals from an RF front end and creates baseband RX signal samples there from. The rake receiver combiner module includes control logic, an input buffer, a rake despreader module, and an output buffer. The rake despreader module is operable to despread the baseband RX signal samples in a time divided fashion to produce channel symbols including pilot channel symbols and physical channel symbols.Type: ApplicationFiled: September 6, 2005Publication date: February 1, 2007Inventors: Mark Hahm, Huaiyu (Hanks) Zeng, Joseph Boccuzzi, Nelson Sollenberger
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Publication number: 20070025425Abstract: A spread_spectrum modulator converts input sequences composed of digital symbols into n?2 spread-spectrum sequences. It comprises a spreading code generator and means of combining the spreading code with the input sequences so as to produce the n spread_spectrum sequences for transmission from n respective antennas of a radio transmitter. Each spread_spectrum sequence corresponds to a sum of at least two contributions mutually shifted by a time substantially less than the duration of a symbol, each contribution being the product of a version of one of the n input sequences times the spreading code.Type: ApplicationFiled: May 6, 2004Publication date: February 1, 2007Inventors: Hassan El Nahas El Homsi, Moussa Abdi, Alexandre Jard
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Publication number: 20070025426Abstract: A digital broadcast system controllable by multiple users is provided, which adds a CDMA function to a conventional set-top box or digital TV receiver. This allows the set-top box or digital TV receiver to process all signals received through the same frequency at the same time. This system can be applied to a variety of applications such as a game in which multiple users can participate using their terminals.Type: ApplicationFiled: July 24, 2006Publication date: February 1, 2007Inventor: Jong Kim
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Publication number: 20070025427Abstract: In a code division multiple access communication system (100), a method and an accompanying apparatus provide for an efficient control of a gain level of a communication channel at various mobility levels. A rate of change of a carrier to interference ratio (C/I) of a communication channel received at a receiver (400) is determined. The gain level of the communication channel may be based on the rate of change of the C/I of the communication channel. A mobility level of the communication channel may be compared to a low mobility threshold corresponding to a low mobility level. If the mobility level meets the low mobility threshold, the gain level of the communication channel may be based on the rate of change of the C/I of the communication channel.Type: ApplicationFiled: October 5, 2006Publication date: February 1, 2007Inventor: Yu-Cheun Jou
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Publication number: 20070025428Abstract: A baseband processing module includes TX processing components, a processor, memory, an RX interface, and a cell searcher module. The TX processing components receive outbound data, process the outbound data to produce a baseband TX signal, and output the baseband TX signal to a RF front end of the RF transceiver. The RX interface receives a baseband RX signal from the RF front end carrying a WCDMA signal. The cell searcher module receives the baseband RX signal, scans for WCDMA energy within the baseband RX signal, acquires slot synchronization to the WCDMA signal based upon correlation with a Primary Synchronization Channel (PSCH) of the WCDMA signal, acquires frame synchronization to, and identify a code group of, the WCDMA signal based upon correlation with a Secondary Synchronization Channel (SSCH) of the WCDMA signal, and identifies the scrambling code of the WCDMA signal based upon correlation with a Common Pilot Channel (CPICH) of the WCDMA signal.Type: ApplicationFiled: September 6, 2005Publication date: February 1, 2007Inventors: Mark Hahm, Li Chang, Nelson Sollenberger
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Publication number: 20070025429Abstract: A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information regarding an expected multi-path signal component of a WCDMA signal. Then, the multi-path scanner module is operable to identify a plurality of multi-path signal components of the WCDMA signal by descrambling, despreading and correlating a known symbol pattern of/with a baseband RX signal within a search window. The multi-path scanner module is operable to determine timing information for the plurality of multi-path signal components of the WCDMA signal found within the search window and to pass this information to a coupled rake receiver combiner module.Type: ApplicationFiled: August 31, 2005Publication date: February 1, 2007Inventors: Mark Hahm, Baoguo Yang
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Publication number: 20070025430Abstract: A method of correcting phase error of a phase shift keyed (PSK) signal includes (a) receiving a signal modulated by a spreading sequence; (b) despreading the received signal using a receiver spreading sequence similar to the spreading sequence of step (a); (c) calculating a crosscorrelation profile between the receiver spreading sequence and the received signal; and (d) calculating an autocorrelation profile of the receiver spreading sequence to determine a spreading code property (SCP). The method also includes (e) estimating a timing error in alignment between the autocorrelation and the crosscorrelation profiles; and (f) correcting a phase error of the signal despread in step (c), by using the SCP and the estimated timing error.Type: ApplicationFiled: December 21, 2005Publication date: February 1, 2007Inventor: Donald Rasmussen
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Publication number: 20070025431Abstract: In a data communication system, a transmitter of an ADSL modem uses a PRBS generator to generate a plurality of ADSL signals. The transmitter computes the Peak to Average (e.g., root-mean-square) (“PAR”) ratio of each of the ADSL signals generated. The ADSL signal having the lowest PAR is determined, and the corresponding state of the PRBS generator is noted. The signal having the lowest PAR, or at least the corresponding state of the PRBS generator, is then used to generate a Q-mode signal.Type: ApplicationFiled: January 23, 2006Publication date: February 1, 2007Inventor: Arthur Carlson
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Publication number: 20070025432Abstract: A method determines a complex reflection impulse response of a fiber Bragg grating. The method includes providing a measured amplitude of a complex reflection spectrum of the fiber Bragg grating. The method further includes providing an estimated phase term of the complex reflection spectrum. The method further includes multiplying the measured amplitude and the estimated phase term to generate an estimated complex reflection spectrum. The method further includes calculating an inverse Fourier transform of the estimated complex reflection spectrum, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex reflection impulse response by applying at least one constraint to the inverse Fourier transform of the estimated complex reflection spectrum.Type: ApplicationFiled: May 16, 2005Publication date: February 1, 2007Inventors: Aydogan Ozcan, Michel Digonnet, Gordon Kino
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Publication number: 20070025433Abstract: Methods and systems to calibrating a transmitter for I/Q imbalance and local oscillator feed-through include generating a test tone, frequency up-converting the test tone, monitoring one or more features of the up-converted test tone, and adjusting one or more features of the transmitter in response to the monitoring. The monitoring optionally includes monitoring a beating of the envelope of the up-converted test tone. In an embodiment, a first harmonic of the up-converted test tone is monitored for local oscillator feed-through (LOFT). Alternatively, baseband data inputs to the transmitter are disabled, and LOFT is measured by measuring power at the transmitter output. A second harmonic of the up-converted test tone is monitored for gain and phase imbalances. The adjusting optionally includes adjusting a gain imbalance, adjusting a phase imbalance, and/or adjusting DC offsets. The adjusting optionally includes an iterative refinement process.Type: ApplicationFiled: April 4, 2006Publication date: February 1, 2007Inventors: Joachim Hammerschmidt, Rajendra Moorti
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Publication number: 20070025434Abstract: An equalization system and method which supports macro diversity as well as large delay spread channels with a minimal increase in complexity is disclosed. The equalization system includes a path searcher, an optional search scheduler, a multi-equalizer manager, an alignment buffer, a plurality of equalizers and an equalizer combiner. The path searcher detects positions of paths of the received signals. The equalizers are used to perform equalization on the received signals. The multi-equalizer manager controls the equalizers by assigning specific positions of the paths to respective ones of the equalizers. The equalizer combiner then combines outputs from the equalizers.Type: ApplicationFiled: October 31, 2005Publication date: February 1, 2007Applicant: InterDigital Technology CorporationInventors: Gregory Sternberg, Rui Yang
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Publication number: 20070025435Abstract: Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading. A novel approach is presented by which adjustable amplification and equalizer may be achieved using a C3MOS wideband data stage. This may be referred to as a C3MOS wideband data amplifier/equalizer circuit. This employs a wideband differential transistor pair that is fed using two separate transistor current sources. A switchable RC network is communicatively coupled between the sources of the individual transistors of the wideband differential transistor pair. There are a variety of means by which the switchable RC network may be implemented, including using a plurality of components (e.g., capacitors and resistors connected in parallel).Type: ApplicationFiled: December 28, 2005Publication date: February 1, 2007Inventor: Jun Cao
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Publication number: 20070025436Abstract: Equalization circuitry for receiving a digital data signal includes both feed-forward equalizer (“FFE”) circuitry and decision-feedback equalizer (“DFE”) circuitry. The FFE circuitry may be used to give the DFE circuitry a signal that is at least minimally adequate for proper start-up of the DFE circuitry. Thereafter, more of the burden of the equalization task may be shifted from the FFE circuitry to the DFE circuitry.Type: ApplicationFiled: July 28, 2005Publication date: February 1, 2007Inventors: Sergey Shumarayev, Wilson Wong, Rakesh Patel
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Publication number: 20070025437Abstract: Systems and methods are described for pulse communications using precision timing. A method includes digitally pulse coding a data stream; and modulating a carrier signal using the digitally pulse coded data stream.Type: ApplicationFiled: October 4, 2006Publication date: February 1, 2007Inventors: William Dress, Brian Donovan
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Publication number: 20070025438Abstract: A method and apparatus for providing elastic storage of layered video data stored in a storage apparatus are disclosed. The stored enhancement layer video data is read out of the storage apparatus. The enhancement layer video data is then at least partially decoded or ultimately completely deleted. The decoded enhancement layer video data is attenuated in a linear or non-linear manner. The attenuated enhancement layer video data is then encoded. The encoded attenuated video data is stored back in the storage apparatus.Type: ApplicationFiled: December 18, 2003Publication date: February 1, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventor: Wilhelmus Bruls
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Publication number: 20070025439Abstract: A method and apparatus for encoding and decoding a video signal according to directional intra-residual prediction. The video encoding method of the present invention includes calculating first residual data by performing directional intra-prediction on a first block of a base layer with reference to a second block of the base layer, calculating second residual data by performing directional intra-prediction on a third block of an enhancement layer that corresponds to the first block of the base layer with reference to a fourth block of the enhancement layer that corresponds to the second block of the base layer, and encoding the third block according to the directional intra-residual prediction by obtaining third residual data that is a difference between the first residual data and the second residual data.Type: ApplicationFiled: July 21, 2006Publication date: February 1, 2007Inventors: Woo-jin Han, Sang-chang Cha, Kyo-hyuk Lee
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Publication number: 20070025440Abstract: The invention relates to a video encoding method provided for encoding an input image sequence consisting of successive groups of frames in which each frame is itself subdivided into blocks, and to a corresponding video encoding device. This method and device perform the steps of preprocessing the sequence on the basis of a so-called content-change strength (CCS) computed for each frame, generating a predicted frame using motion vectors estimated for each block, applying to a difference signal between the current frame and the last predicted frame a transformation sub-step producing a plurality of coefficients and followed by a quantization sub-step of said coefficients, and coding said quantized coefficients. According to the invention, the CCS is used in the quantization sub-step for modifying the quantization factor used in this sub-step, the CCS and the quantization factor increasing or decreasing simultaneously.Type: ApplicationFiled: November 1, 2004Publication date: February 1, 2007Inventor: Stephan Mietens
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Publication number: 20070025441Abstract: In general, a methodology of rate control for a video encoding is provided, which is implementable by the means of a method, a device, a computer program and/or a video encoder. A frame encoding process is performed for each frame in that an initial quantization parameter is calculated for being used as a quantization parameter for encoding a current frame. Each group of macroblocks within the current frame is encoded group by group; i.e. group-wise. A score value is determined after macroblock encoding of a current group of macroblocks. In case the score value exceeds a pre-defined threshold, the quantization parameter for encoding the next group of macroblocks is adjusted; otherwise, the macroblock encoding is continued with the quantization parameter which is currently used for encoding the current group of macroblocks.Type: ApplicationFiled: July 28, 2005Publication date: February 1, 2007Inventors: Kemal Ugur, Jani Lainema, Yuxin Liu
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Publication number: 20070025442Abstract: A region setting unit 64 sets multiple global regions in a frame image. A bit number adjustment unit 62 adjusts the number of bits of the local motion vectors LMV which are to be obtained for each global region. A local motion vector detection unit 66 detects the local motion vectors LMV with the number of bits adjusted by the bit number adjustment unit 62 in units of macro blocks for each global region. A global motion vector calculation unit 68 calculates the global motion vector GMV which represents the global motion for each global region. A local motion vector difference coding unit 72 calculates the difference ?LMV, which is the difference between each local motion vector LMV and the global motion vector GMV, for each global region, and performs coding thereof.Type: ApplicationFiled: July 28, 2006Publication date: February 1, 2007Inventors: Shigeyuki Okada, Yuh Matsuda, Hideki Yamauchi, Yasuo Ishii, Mitsuru Suzuki, Shinichiro Okada
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Publication number: 20070025443Abstract: A moving picture coding apparatus, for optimizing a handling of a reference picture with the view to reducing the data amount of the reference picture to be stored for use in motion prediction coding, which is configured of: a local decoding unit which obtains a reference picture by decoding a first code representing a first input picture; a reference picture reduction unit which obtains a reduced reference picture by reducing the size of the reference picture; a reference picture storage unit which stores the reduced reference picture; an inter-frame coding unit which generates a difference picture between a second input picture and a reconstructed reference picture obtained by expanding the size of the reduced reference picture obtained from the reference picture storage unit; and an intra-frame coding unit which codes the difference picture.Type: ApplicationFiled: July 17, 2006Publication date: February 1, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventor: Kazuyuki INOKUMA
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Publication number: 20070025444Abstract: A local motion vector detection unit 66 obtains a local motion vector LMV for each macro block in a coding target frame image. A region setting unit 64 sets multiple global regions in the frame image. A global motion vector calculation unit 68 calculates a global motion vector GMV which indicates the global motion within each global region. A local motion vector difference coding unit 72 performs coding of the difference ?LMV which has been obtained by making the difference between each of the local motion vectors LMV within the global region and the global motion vector GMV obtained for each global region. A global motion vector difference coding unit 74 performs coding of the difference ?GMV which has been obtained by making the difference between each of the global motion vectors GMV obtained for corresponding global region and the reference global motion vector GMVB serving as a reference.Type: ApplicationFiled: July 28, 2006Publication date: February 1, 2007Inventors: Shigeyuki Okada, Hideki Yamauchi, Yuh Matsuda, Mitsuru Suzuki, Haruhiko Murata
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Publication number: 20070025445Abstract: In one embodiment, a pixel in a block of the image is filtered according to a filtering methodology. The filtering methodology includes determining a filtering strength value. This determining step determines a first filter strength value if the block has non-zero transform coefficient information and determines a second filter strength value if a motion vector difference between a motion vector of the first block and a motion vector of an adjacent second block is greater than or equal to one. The first filter strength value is greater than the second filter strength value.Type: ApplicationFiled: October 5, 2006Publication date: February 1, 2007Inventor: Min Hong
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Publication number: 20070025446Abstract: The present invention relates to a data processing apparatus, a method and apparatus for encoding, a method and apparatus for decoding, and a program, that allow a reduction in an algorithm delay. An interpolator 51 produces interpolated PCM data by performing R-times oversampling on original PCM data. A frame encoder 54 fetches a predetermined number of samples of the oversampled data as one frame, encodes the oversampled data on a frame-by-frame basis, and outputs resultant encoded data. A frame decoder 55 decodes the encoded data on a frame-by-frame basis at a rate R times higher than a predetermined normal rate. A decimator 56 decimates data obtained as a result of the decoding such that the number of samples is reduced to 1/R of the number of sampled included in the original data. The present invention is applicable, for example, to an IP telephone system.Type: ApplicationFiled: May 20, 2004Publication date: February 1, 2007Inventors: Jun Matsumoto, Masayuki Nishiguchi
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Publication number: 20070025447Abstract: A method and system for reducing noise in a video stream comprising images divided into macroblocks, where each macroblock includes luma and chroma blocks and each block is comprised of pixels. The method comprises determining correlation of a macroblock with a reference macroblock, comparing its motion vectors to a predetermined threshold, computing a residual signal of the macroblock by subtracting the macroblock from a predicted macroblock, computing a variance of a residual signal of the macroblock, comparing the variance of the residual signal to another predetermined threshold, determining a filter strength for the macroblock based on one or more of factors such as correlation, motion vector size and variance of the residual signal and filtering the macroblock using a filter of appropriate strength.Type: ApplicationFiled: August 18, 2005Publication date: February 1, 2007Applicant: Broadcom CorporationInventors: Gideon Kojokaro, David Drezner
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Publication number: 20070025448Abstract: Deblocking filter used in a video encoder/decoder based on a multilayer. In deciding a deblocking filter strength when performing a deblocking filtering with respect to a boundary between a current block coded by an intra-BL mode and its neighboring block, it is determined whether the current block or the neighboring block has coefficients. The filter strength is decided as a first filter strength if it is determined that the current block or the neighboring block has the coefficients, and the filter strength is decided as a second filter strength if it is determined that the current block or the neighboring block does not have the coefficients. The first filter strength is greater than the second filter strength.Type: ApplicationFiled: July 11, 2006Publication date: February 1, 2007Inventors: Sang-chang Cha, Kyo-hyuk Lee, Bae-keun Lee, Woo-jin Han, Jae-young Lee, Ho-jin Ha
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Publication number: 20070025449Abstract: A variable-bit-rate (VBR)-encoding of a plurality of clips from a plurality of video content items is performed to produce a VBR-encoded aggregated video content item. The VBR-encoding of each of the clips is based on an encoding complexity of at least one other one of the clips. This can be performed by combining the clips into aggregated video content and two-pass VBR-encoding the aggregated video content. A video quality test may be performed using the VBR-encoded aggregated video content item.Type: ApplicationFiled: July 27, 2005Publication date: February 1, 2007Applicant: SBC Knowledge Ventures, L.P.Inventors: Paul Vleck, Philip Kortum, Marc Sullivan
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Publication number: 20070025450Abstract: A serial concatenated coder includes an outer coder and an inner coder. The outer coder irregularly repeats bits in a data block according to a degree profile and scrambles the repeated bits. The scrambled and repeated bits are input to an inner coder, which has a rate substantially close to one.Type: ApplicationFiled: October 3, 2006Publication date: February 1, 2007Inventors: Hui Jin, Aamod Khandekar, Robert McEliece
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Publication number: 20070025451Abstract: System and methods are disclosed for creating and using a trace structure. System and methods are disclosed for creating and using low impedance differential trace structures. A trace structures comprises at least two substantially collinear traces electrically connected along the length of the traces by at least one connection. The trace structures may be readily manufactured using cost-effective manufacturing techniques and tolerances.Type: ApplicationFiled: July 13, 2005Publication date: February 1, 2007Inventor: Darin Douma
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Publication number: 20070025452Abstract: An inline power controller includes at least one analog interface circuit module (AICM) having a first analog input node for receiving an inline power port voltage, a second analog input node for receiving an inline power port current, a first analog output for effecting an inline power port voltage, a second analog output for effecting an inline power port current, and a digital interface converting the received inline power port voltage to a digital value, the inline power port current to a digital value, a first digital value to the first analog output and a second digital value to the second analog output. A digital serial bus (DSB) couples the AICM to a digital controller via digital serial bus interfaces (DSBIs).Type: ApplicationFiled: July 27, 2005Publication date: February 1, 2007Inventor: Frederick Schindler
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Publication number: 20070025453Abstract: A signal transmission system has a plurality of signal lines, a plurality of transmitting circuits, a plurality of receiving circuits, and a timing adjusting circuit. The transmitting circuits are provided for the signal lines. Each of the receiving circuits receives a signal from a corresponding one of the transmitting circuits via the signal lines. The timing adjusting circuit, which is provided at the same side as the transmitting circuits, adjusts signal latch timing for the receiving circuits to optimum timing in accordance with signal skew caused between the signal lines. Therefore, a large-capacity and error free transmission can be performed at high speed using a plurality of signal lines without being affected by skew on each of the signal lines.Type: ApplicationFiled: October 5, 2006Publication date: February 1, 2007Inventors: Kazuhiro Terashima, Kohtaroh Gotoh, Koji Migita, Jun Takahashi
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Publication number: 20070025454Abstract: An Orthogonal Frequency Division Multiplex (OFDM) communication system comprises OFDM transmitters (103-109) and an OFDM receiver (101). The system comprises a subcarrier status data controller (200) for transmitting subcarrier status data to the OFDM receiver (101). The subcarrier status data indicates the active subcarriers of the OFDM transmitters (103-109). The OFDM receiver (101) comprises a receiver (201) which receives a signal comprising a desired signal component from a first OFDM transmitter (103) and interference from at least one interfering OFDM transmitter (105). The OFDM receiver (101) further comprises a subcarrier status processor (203) which receives the subcarrier status data and a channel estimator (205) which determines channel estimates for at least an air interface communication channel from the first OFDM transmitter (103) and an air interface communication channel from the interfering OFDM transmitter (105).Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Applicant: IPWireless, Inc.Inventors: Alan Jones, Vishakan Ponnampalam
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Publication number: 20070025455Abstract: A method and apparatus for reducing peak transmitter power includes providing a set of orthogonal communication codes for a telecommunications system that includes a set of active user codes and a set of inactive user codes (1404). A communication signal is generated from the set of active user codes (1406). The peak-to-average power ratio of the communication signal is reduced by performing a peak cancellation function on the communication signal that minimizes energy distribution at least one of the set of active user codes and the set of inactive user codes (1410).Type: ApplicationFiled: July 28, 2005Publication date: February 1, 2007Inventors: William Greenwood, Dale Anderson, Ronald Porco
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Publication number: 20070025456Abstract: A spectral notch modulation technique for encoding information in a signal involves transforming the signal into the frequency domain via a fast Fourier transform (FFT) of length N, such that the signal is represented by N frequency bins, selectively nulling M of the N frequency bins, where nulled combinations of M frequency bins respectively correspond to encoded information bits, transforming the selectively nulled signal to the time domain via an inverse FFT, and transmitting the selectively nulled signal. At the receiving end, the signal is demodulated to recover the encoded information by transforming the signal into the frequency domain via a fast Fourier transform (FFT) of length N, identifying the set of M nulled frequency bins among the N frequency bins, and converting the set of M nulled frequency bins to corresponding information bits.Type: ApplicationFiled: July 29, 2005Publication date: February 1, 2007Inventor: Dennis McCrady
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Publication number: 20070025457Abstract: A synchronization apparatus and method for an OFDM system includes four portions: delay conjugate multiplication, phase processing, delay moving sum and minimum value detection. The invention performs the correlation phase operation and finds out the location of abnormal change for the phase difference of the output signal. The location is used for the reference of symbol synchronization. It overcomes the problems of incorrect judge about synchronization location due to the channel fading or noise. The invention can be applied to wire/wireless communications or digital video broadcasting-terrestrial systems, specialized in symbol synchronization at a receiving end.Type: ApplicationFiled: October 8, 2005Publication date: February 1, 2007Inventor: Hung-Hsiang Wang