Patents Issued in May 6, 2004
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Publication number: 20040086025Abstract: Apparatus and method for controlling current input to an electrical resistance element such as a seal blade. A heating sensing element such as a thermocouple monitors the temperature of a component of the sealing jaw, such as a conductive mounting member supporting the seal element. When the sensed temperature is above or below a predetermined value, the duration of the impulse current is modified until the temperature falls within a predetermined range or to a predetermined value.Type: ApplicationFiled: November 1, 2002Publication date: May 6, 2004Inventors: Thomas P. Orsini, Russell T. Christman
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Publication number: 20040086026Abstract: A flexible wired circuit board for temperature measurement that can provide an accurate temperature measurement even when placed in a high-temperature atmosphere and can also be provided at a reduced cost. In the flexible wired circuit board for temperature measurement, a conductor layer formed from a metal foil, such as a stainless foil, having a proportional relation between temperature and specific electric resistance is formed on a base insulating layer. Also, a single thin sensor wiring in a sensor portion exposed from a cover insulating layer is formed into a certain pattern by folding back the sensor wiring in a continuous S-shaped form, such that adjacent parts of the wiring extending in parallel are spaced apart from each other at a predetermined interval in a widthwise direction of the conductor layer.Type: ApplicationFiled: October 29, 2003Publication date: May 6, 2004Inventors: Yosuke Miki, Yasuhito Ohwaki
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Publication number: 20040086027Abstract: An adaptation to Carrier Interferometry synthesis and analysis provides for complex coding and decoding in a sliding window transform. Coding and decoding functionality can be extended to spatial processing in systems employing multiple transceiver elements. Poly-amplitude codes permit successive interference cancellation in spatial and frequency-domain processing. Handoffs in cellular systems are facilitated by selecting spectral/base station combinations that optimize link performance.Type: ApplicationFiled: April 16, 2003Publication date: May 6, 2004Inventor: Steve J. Shattil
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Publication number: 20040086028Abstract: Direct sequence spread spectrum encoder and method for digital information in wireless LANs are provided. The encoder comprises a spreading means for mapping two input data bits to one sequence out of four selectable, nearly orthogonal sequences being selected from 216 possible sequences. The encoder further comprises a digital-to-analog converter connected to an output of the spreading means for generating an analog signal based on the symbols as outputted by the spreading means and a low-pass filter connected to an output of the digital-to-analog converter for low-pass filtering the analog signal.Type: ApplicationFiled: August 29, 2003Publication date: May 6, 2004Applicant: Advanced Micro Devices, Inc.Inventors: Wolfram Kluge, Jorg Borowski
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Publication number: 20040086029Abstract: A phase lock loop comprising a plurality of voltage controlled oscillators is presented herein. The phase lock loop can provide a wide range of output frequencies with low jitter. Additionally, the phase lock loop can be incorporated into a clock multiplier unit and a clock and data recovery unit.Type: ApplicationFiled: May 22, 2003Publication date: May 6, 2004Inventors: Mario Caresosa, Namik Kocaman
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Publication number: 20040086030Abstract: A method and apparatus are disclosed to aid a transceiver chip, in a serial data communications system, in recovering from a system-side, out-bound data clocking problem. If a problem with a primary clock signal, used to clock data from a system-side of a transceiver chip through at least a part of an out-bound data path of the transceiver chip, is detected, then a more reliable secondary clock signal is substituted for the primary clock signal. Once it is determined that the primary clock signal has recovered, the primary clock signal is switched back to and certain discrete circuits of the out-bound data path of the transceiver chip are automatically reset in hardware without the need for system level intervention to avoid any problems due to clock glitches on the primary clock signal during the switching.Type: ApplicationFiled: December 5, 2002Publication date: May 6, 2004Inventors: Kang Xiao, Mario Caresosa, Hongtao Jiang, Randall Stolaruk
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Publication number: 20040086031Abstract: A transceiver IC (1a) and peripheral ICs (4, 5) are mounted on a board (100). A clock generating circuit (2) such as a ring oscillator and a frequency divider (3) connected to the clock generating circuit (2) are formed in the transceiver IC (1a). The clock generating circuit (2) generates a first clock (C1) of a predetermined frequency of about several hundred megahertz. The transceiver IC (1a) operates in response to the first clock (C1). The first clock (C1) is divided down to a frequency of about several tens megahertz by the frequency divider (3) and is supplied to the peripheral IC (4) as a second clock (C2). The peripheral IC (4) operates in response to the second clock (C2).Type: ApplicationFiled: May 1, 2003Publication date: May 6, 2004Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventor: Shohei Moriwaki
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Publication number: 20040086032Abstract: A method, system, and computer program product is disclosed for determining the optimal power of the downstream data signal transmitted by a digital server and designing a constellation based on this determination. Digital and analog loss is compensated for by calculating the constellation power, taking into consideration the client modem ADC's dynamic range, the total loss across the network (both digital and analog losses), and the constrained maximum power of the digital network, so that the power of the transmitted signal at the input of the decoder's (client modem's) ADC is less than but as close as possible, and preferably equal to, the ADC's maximum average power, PADC. The total loss LT across the entire network is determined from the handshake information exchanged during the modem start-up sequence. Using this information and the known dynamic range of the client modem's ADC, the power of the downstream data signal can be optimized.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Inventor: Jinguo Yu
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Publication number: 20040086033Abstract: A discontinuous transmission (DTX) bit processing method for a multirate modulation scheme is provided. The method comprises receiving a symbol; determining whether the symbol comprises at least one DTX bit; mapping the symbol to a predetermined mapping point (S) on an IQ plane; minimizing a transmission power level if the symbol has at least one DTX bit; and transmitting the symbol in the transmission power level of the mapping point.Type: ApplicationFiled: October 28, 2003Publication date: May 6, 2004Applicant: LG Electronics Inc.Inventor: Sung Kwon Hong
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Publication number: 20040086034Abstract: Mask compliance of a digital signal from a reference device is determined. Bit error rates for first sampling points for a low mask region are detected. The bit error rates for the first sampling points are averaged to produce an average low mask region error rate. Bit error rates for second sampling points for a high mask region are detected. The bit error rates for the second sampling points are averaged to produce an average high mask region error rate.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Inventor: Roger Lee Jungerman
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Publication number: 20040086035Abstract: A signal equalizer that employs micro-electromechanical machine devices for the tap weight controllers. The equalizer includes a substrate on which is formed a forward transmission line rail and a return transmission line rail. A cantilever stanchion is also formed on the substrate that runs parallel with the transmission line rails. A series of spaced apart cantilevers are pivotally mounted to the cantilever stanchion, and extend over the transmission line rails to define a gap therebetween. A weight tap line is coupled to each cantilever, and is responsive to a DC weight signal that controls the position of the cantilever to set the gap between the cantilever and the transmission line rails. A distorted signal is coupled from the forward transmission line rail to the return transmission line rail through the cantilevers.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Inventors: Eric L. Upton, James M. Anderson
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Publication number: 20040086036Abstract: An improved decision feedback equalization technique is provided that may be used in data communications receivers such as those in WLAN (Wireless Local Area Network) systems. The decision feedback equalizer comprises a feedforward filter that is connected to receive an input data signal and output a filter representation thereof. The feedforward filter has a filter characteristic that depends on filter coefficient data. The decision feedback equalizer further comprises a filter coefficient computation unit for generating the filter coefficient data and outputting the generated data to the feedforward filter. At least one data processing circuit is provided that receives a mode switch signal for switching its operational mode. The data processing circuit is arranged for performing a feedforward filter function in one operational mode and a filter coefficient computation function in another operational mode.Type: ApplicationFiled: June 19, 2003Publication date: May 6, 2004Applicant: Advanced Micro Devices, Inc.Inventors: Uwe Eckhardt, Michael Schmidt, Eric Sachse
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Publication number: 20040086037Abstract: Since the frequency band after the spread spectrum modulation is wide, the frequency of 2.4 GHz band of the ISM (Industrial Scientific Medical) band as a modulation carrier frequency, is specified, so that the current state, in which the spread spectrum communication system can not be applied to the transmission by the frequencies other than 2.4 GHz band, is considered, and thus the noise reduction effect equal with the spread spectrum communication system was obtained in the signal transmission in the frequencies other than 2.4 GHz band, thereby obtaining a construction, in which the spread spectrum modulation is performed only at receiving side.Type: ApplicationFiled: March 11, 2003Publication date: May 6, 2004Inventor: Tadao Sugita
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Publication number: 20040086038Abstract: A system and method for using microlets in communication is disclosed. A microlet corresponds to a transform of information based upon its quantum element state. Microlet communications employs modems, encoders, sequencers and other devices to compress data according to its quantum information. Using a virtual quantum register, changes in the microlet transforms and their quantum states are used to exchange information.Type: ApplicationFiled: April 22, 2003Publication date: May 6, 2004Inventor: Daniel Kilbank
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Publication number: 20040086039Abstract: An input module obtains a media signal to be communicated to a destination system, after which an identification module identifies a plurality of scenes within the media signal. A selection module automatically selects different codecs from a codec library to respectively compress at least two of the scenes. The codecs are automatically selected to produce a highest compression quality for the respective scenes according to a set of criteria without exceeding a target data rate. A compression module then compresses the scenes using the automatically selected codecs, after which an output module delivers the compressed scenes to the destination system with an indication of which codec was used to compress each scene.Type: ApplicationFiled: October 23, 2003Publication date: May 6, 2004Applicant: Interact Devices, Inc.Inventors: Jodie L. Reynolds, Robert W. Ingraham, Lawrence S. Reznick, John E. Wilkinson, Jack A. Prock, Danny L. Mabey
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Publication number: 20040086040Abstract: A data structure for representing program data that includes a number of streams. Each stream comprises a group of pictures (GOP) having a first picture and remaining pictures. The data structure includes a first set of one or more elements for representing data for the first pictures in the GOPs, and a second set of one or more elements for representing data for the remaining pictures in the GOPs. At least one element in the first set represents data for the first picture of at least one respective GOP, with each such first picture having been encoded as a reference I picture. Each remaining element (if any) in the first set represents data for the first picture of a respective remaining GOP, with each such remaining first picture having been encoded as either a difference picture or a P picture. Each element in the second set represents data for a particular remaining picture in one of the GOPs, with each such remaining picture having been encoded as either a P or B picture.Type: ApplicationFiled: October 30, 2003Publication date: May 6, 2004Inventors: Sadik Bayrakeri, Donald F. Gordon, Edward A. Ludvig, John P. Comito, Jeremy S. Edmonds, Eugene Gershtein
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Publication number: 20040086041Abstract: A system and method are disclosed that provide a single layer bit stream syntax with advanced DCT data partitioning designed to combat bit error and packet losses during transmission. The bit stream syntax may be used as a single layer bit stream or may be used to de-multiplex video packets into base and enhancement layers in order to allow unequal error protection. One advantage of this syntax is that the de-multiplexing and merging of received video packets is made simple while allowing for flexible bit allocation for the base and enhancement layers.Type: ApplicationFiled: October 30, 2002Publication date: May 6, 2004Applicant: Koninklijke Philips Electronics N.V.Inventors: Jong Chul Ye, Yingwei Chen
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Publication number: 20040086042Abstract: Adaptive DCT/IDCT apparatus based on energy and method for controlling the same. The adaptive DCT/IDCT apparatus relates to a coding unit of a MPEG4/H.263 video coder, and performs an image processing operation with a high image quality at a high speed by calculating energy values for respective blocks and a mean energy value of the whole image.Type: ApplicationFiled: March 24, 2003Publication date: May 6, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae-Won Kim, Seung-Cheol Lee
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Publication number: 20040086043Abstract: When a background interpolation-judging section 107 judges that parts areas of a lower layer and an upper layer move significantly, and a visual effect can be obtained by the background interpolation, a controller 103 controls a switch 104 based on the area information of the parts area of the lower layer to perform the background interpolation. A weighted average section 106 takes an average by weighting to the upper layer and the lower layer by using the interpolated background to generate an interpolated image. By using this interpolated image, the prediction-encoding/decoding of the upper layer is performed. On the contrary, when the background interpolation-judging section 107 judges that parts areas do not move so significantly, and a visual effect cannot be obtained by the background interpolation, a background is synthesized by using the output of the interpolated image-forming section 105 to generate an interpolated image.Type: ApplicationFiled: October 30, 2003Publication date: May 6, 2004Applicant: Sharp Kabushiki KaishaInventors: Noiro Ito, Hiroyuki Katata, Tomoko Aono, Hiroshi Kusao
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Publication number: 20040086044Abstract: A coding control unit (110) and a mode selection unit (109) are included. The coding control unit (110) determines the coding order for a plurality of consecutive B-pictures located between I-pictures and P-pictures so that the B-picture whose temporal distance from two previously coded pictures is farthest in display order is coded by priority, so as to reorder the B-pictures in coding order. When a current block is coded in direct mode, the mode selection unit 109 scales a forward motion vector of a block which is included in a backward reference picture of a current picture and co-located with the current block, so as to generate motion vectors of the current block, if the forward motion vector has been used for coding the co-located block.Type: ApplicationFiled: August 15, 2003Publication date: May 6, 2004Inventors: Satoshi Kondo, Shinya Kadono, Makoto Hagai, Kiyofumi Abe
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Publication number: 20040086045Abstract: On input coded data, variable length decoding is performed, and motion vector information extracted. The motion vector information is transmitted to the threshold value determination section, and a predetermined threshold value and the value of the motion vector information are compared. Based on the number of motion vector information whose values are the threshold value or more, it determines whether it is necessary to control the interframe motion or not. When the control is necessary because the interframe motion is large, the control signal generation section generates a control signal to suspend the decoding by the varibale length decoding section and thereby reducing a frame rate.Type: ApplicationFiled: October 29, 2003Publication date: May 6, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventor: Akira Yoneyama
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Publication number: 20040086046Abstract: Systems and methods to generate a motion attention model of a video data sequence are described. In one aspect, a motion saliency map B is generated to precisely indicate motion attention areas for each frame in the video data sequence. The motion saliency maps are each based on intensity I, spatial coherence Cs, and temporal coherence Ct values. These values are extracted from each block or pixel in motion fields that are extracted from the video data sequence. Brightness values of detected motion attention areas in each frame are accumulated to generate, with respect to time, the motion attention model.Type: ApplicationFiled: November 1, 2002Publication date: May 6, 2004Inventors: Yu-Fei Ma, Hong-Jiang Zhang
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Publication number: 20040086047Abstract: A motion vector coding unit 117 executes processing including a neighboring block specification step (S100) of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step (Steps S102, S104) of judging whether or not the neighboring block has been coded using a motion vector of another block; a prediction step (S106, S108) of deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step (S110) of coding the motion vector of the current block using the predictive motion vector.Type: ApplicationFiled: August 18, 2003Publication date: May 6, 2004Inventors: Satoshi Kondo, Shinya Kadono, Makoto Hagai, Kiyofumi Abe
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Publication number: 20040086048Abstract: An image data decompression apparatus for decoding blocks of motion compensated non-intra coded data uses a memory (14) storing reference picture data. A decoding processor (12) decodes a current block of a generated picture using lines of previously decoded image data from the memory (14) that are selected in dependence upon a motion vector (V1) for the current block In order to improve access efficiency to the memory (14) the decoding processor (12) concatenates fetches into bursts for different sections of lines of previously decoded data that lie within a predetermined range within the memory addresses of the memory (14).Type: ApplicationFiled: June 27, 2003Publication date: May 6, 2004Inventor: Mark Taunton
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Publication number: 20040086049Abstract: On input coded data, variable length decoding is performed, and motion vector information extracted. The motion vector information is transmitted to the threshold value determination section, and a predetermined threshold value and the value of the motion vector information are compared. Based on the number of motion vector information whose values are the threshold value or more, it determines whether it is necessary to control the interframe motion or not. When the control is necessary because the interframe motion is large, the control signal generation section generates a control signal to suspend the decoding by the varibale length decoding section and thereby reducing a frame rate.Type: ApplicationFiled: October 29, 2003Publication date: May 6, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventor: Akira Yoneyama
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Publication number: 20040086050Abstract: A system and method are disclosed that provide an advanced design of coded video packets using a resynchronization maker for video transmission applications. The resynchronization marker has a fixed ranged bit length within each video object plane or video frame and is cyclically updated video frame by video frame. This coded video packet structure allows decoders to automatically find the video object plane boundary without additional bit stream overhead. This has a particular advantage when a video object plane header is lost during transmission.Type: ApplicationFiled: October 30, 2002Publication date: May 6, 2004Applicant: Koninklijke Philips Electronics N.V.Inventors: Jong Chul Ye, Yingwei Chen
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Publication number: 20040086051Abstract: A data transmission device for generating a plurality of compressed/encoded data of different bit rates from a single video signal, whereby unevenness in the amount of generated data can be easily reduced. A synchronizing signal detection section detects a synchronizing signal from the input video signal and supplies the detected signal to a timing control section. Compressing/encoding sections compress/encode the same video signal input thereto to generate data streams of different bit rates. The timing control section controls the compressing/encoding sections in accordance with the synchronizing signal detected by the synchronizing signal detection section such that timings for starting compression/encoding processes in the compressing/encoding sections are offset in units of frame.Type: ApplicationFiled: October 20, 2003Publication date: May 6, 2004Inventor: Michiko Mizoguchi
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Publication number: 20040086052Abstract: A circuit is connected between a module and a pair of wires. The circuit includes a first connection line, a second connection line, radio frequency termination circuitry, a first transformer, a second transformer, a tapped inductance and a feedback cancellation filter. The first connection line is for connection to a first wire in the pair of wires. The second connection line is for connection to a second wire in the pair of wires. The radio frequency termination circuitry is connected between the first connection line and the second connection line. The first transformer has a first inductance and a second inductance. A first end of the first inductance is coupled to the first connection line. A first end of the second inductance is coupled to the second connection line. The second transformer includes a first inductance and a second inductance.Type: ApplicationFiled: November 1, 2002Publication date: May 6, 2004Inventors: Andy Engel, Janet L. Yun
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Publication number: 20040086053Abstract: A combination of frequency and time division multiplexed signals communicates using bursts of higher frequency sinusoidal waves superimposed upon the alternating current in a two-wire power distribution network. A synchronization pattern precedes data, all bursts having the same frequency to overcome problems caused by varying reactances, and all bursts being confined within negative half-cycles of the AC power. Such networks minimize the amount of wire needed to connect large numbers of devices to a common controller while covering large distances, and requiring no particular connection pattern or terminations, whether near the surface, above ground, or in deep earth wells. In an irrigation system they accommodate at once solenoid valves and distributed environmental sensors. Landscape changes that would otherwise require new wiring to accommodate new irrigation zones are facilitated by merely tapping into the two-wire communications lines at the nearest accessible point.Type: ApplicationFiled: October 16, 2003Publication date: May 6, 2004Inventors: Scott K. Anderson, David J. Anderson
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Publication number: 20040086054Abstract: An apparatus and method therein for reducing a PAPR in an OFDM signal includes: a reorderer (104) that reorders (706) a plurality of elements of an original frequency-domain input vector in a predetermined manner to create a plurality of candidate input vectors; a Fourier processor (108) that performs (708) an inverse Fourier transform on the candidate input vectors to obtain a corresponding plurality of approximating OFDM outputs; a comparator (114) that compares (710) samples of each of the approximating OFDM outputs with corresponding samples of a target output signal; and an output selector (110) that chooses (712) a desired output signal from the approximating OFDM outputs, in response to a comparison of the samples.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Applicant: MOTOROLA, INC.Inventor: Celestino A. Corral
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Publication number: 20040086055Abstract: A method and apparatus for pilot-symbol aided channel estimation in a wireless digital communication system which transmits packets of N OFDM data blocks, each data block comprising a set of K orthogonal carrier frequencies. At the transmitter, pilot symbols are inserted into each data packet at known positions so as to occupy predetermined positions in the time-frequency space. At the receiver, the received signal is subject to a two-dimensional inverse Fourier transform, two-dimensional filtering and a two-dimensional Fourier transform to recover the pilot symbols so as to estimate the channel response.Type: ApplicationFiled: October 16, 2003Publication date: May 6, 2004Inventor: Ye Li
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Publication number: 20040086056Abstract: At the transmitter sid , carri r waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point groups to which data of the first data stream are assigned. Also, data of the second data stream are assigned to the signal points of each signal point group. A difference in the transmission error rat between first and second data streams is developed by shifting the signal points to other positions in the space diagram. At the receiver side, the first and/or second data streams can be reconstructed from a received signal. In TV broadcast service, a TV signal is divided by a transmitter into, low and high, frequency band components which ar designated as a first and a second data stream respectively.Type: ApplicationFiled: October 28, 2003Publication date: May 6, 2004Inventor: Mitsuaki Oshima
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Publication number: 20040086057Abstract: A translational-loop transmitter generates RF signals using at most one phase-locked-loop (PLL) circuit. In one embodiment, a single PLL generates two local oscillation signals. The first oscillation signal is mixed with a baseband signal to generate an intermediate frequency signal. The second oscillation signal is input into the translational loop to adjust a voltage-controlled oscillator to the desired carrier frequency. In order to perform this type of modulation, the frequencies of the local oscillation signals are set so that they are harmonically related to one another relative to the carrier frequency. Other embodiments generate only one oscillation signal. Under these conditions, the intermediate frequency signal is generated using the oscillation signal, and a frequency divider in the translational loop is used to generate a control signal for adjusting the voltage-controlled oscillator to the carrier frequency.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Applicant: GCT Semiconductor, Inc.Inventors: Kang-Yoon Lee, Eunseok Song, Jeong Woo Lee, Joonbae Park, Kyeongho Lee
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Publication number: 20040086058Abstract: A WLAN (Wireless Local Area Network) transmitter or another data communications apparatus is provided that comprise a transmission section that is configured to generate signals to be transmitted, and a control section that is connected to the transmission section to control the transmission section dependent on at least two transmission parameters. The control section comprises a state transition controller that is configured to step through a plurality of predefined control states. The control section is configured to apply different transmission parameter modification mechanisms in different control states. The state transition controller is configured to determine the respective next control states based on transmission success and failure statistics.Type: ApplicationFiled: June 19, 2003Publication date: May 6, 2004Applicant: Advanced Micro Devices, Inc.Inventors: Uwe Eckhardt, Matthias Lenk, Michael Grell
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Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codes
Publication number: 20040086059Abstract: An approach is provided for bit labeling of a signal constellation. A transmitter generates encoded signals using, according to one embodiment, a structured parity check matrix of a Low Density Parity Check (LDPC) code. The transmitter includes an encoder for transforming an input message into a codeword represented by a plurality of set of bits. The transmitter includes logic for mapping non-sequentially (e.g., interleaving) one set of bits into a higher order constellation (Quadrature Phase Shift Keying (QPSK), 8-PSK, 16-APSK (Amplitude Phase Shift Keying), 32-APSK, etc.), wherein a symbol of the higher order constellation corresponding to the one set of bits is output based on the mapping.Type: ApplicationFiled: July 3, 2003Publication date: May 6, 2004Applicant: HUGHES ELECTRONICSInventors: Mustafa Eroz, Feng-Wen Sun, Lin-Nan Lee -
Publication number: 20040086060Abstract: A pulse wave detecting apparatus is provided which is capable of measuring a pulse rate more accurately even with a calculation unit having low calculating capability. An A-D conversion circuit samples a pulse wave detected by a pulse wave sensor at 16 Hz to perform A-D conversion of the same and sequentially outputs resultant signals-to a modified moving average process circuit. The modified moving average process circuit sequentially averages every two of the signals from the A-D conversion circuit without duplication and outputs signals at 8 Hz, and an FFT circuit performs Fourier transform on signals obtained through the averaging. Another A-D conversion circuit samples kinetic noises detected by an acceleration sensor at 8 Hz to perform A-D conversion of the same and sequentially outputs resultant signals to another FFT circuit, and the FFT circuit performs Fourier transform on the input signals.Type: ApplicationFiled: September 10, 2003Publication date: May 6, 2004Inventor: Keisuke Tsubata
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Publication number: 20040086061Abstract: A multiple mode clock receiver including first and second input AC-coupled capacitors, first and second voltage dividers and a differential amplifier. The voltage dividers each include first and second junctions, respectively, coupled to the first and second AC-coupled capacitors, respectively. The differential amplifier has first and second inputs coupled to the first and second junctions, respectively, and an output providing an output clock signal that is aligned with an input clock signal provided through the AC-coupled capacitors. The multiple mode clock receiver is a single circuit that aligns the output clock signal to any one of multiple forms of input clock signals, including a sole single-ended clock signal, a single-ended clock signal with a corresponding reference signal, and a differential clock signal.Type: ApplicationFiled: October 28, 2003Publication date: May 6, 2004Applicant: IP-First LLCInventor: James R. Lundberg
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Publication number: 20040086062Abstract: A complementary code decoder technique is provided where the encoded input data is first parallelized. From the parallelized data, correlation values are generated by a correlator circuit that is capable of changing its correlation characteristics depending on at least one control signal. Different control signals are sequentially provided to the correlator circuit thereby driving the correlator circuit to sequentially generate multiple correlation values from the parallelized data, based on different correlation characteristics. From the multiple correlation values, the correlation value that represents the optimum correlation is identified. This technique significantly reduces the gate count of the decoder structure, thus saving chip area and manufacturing costs.Type: ApplicationFiled: June 19, 2003Publication date: May 6, 2004Applicant: Advanced Micro Devices, Inc.Inventors: Uwe Eckhardt, Eric Sachse, Ingo Kuhn
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Publication number: 20040086063Abstract: An apparatus for adjusting bandwidth for a receiver includes: (a) a receiver clock operating according to receiver clock parameters related to received signals for sampling received signals; (b) a local clock; (c) a tracker receiving an indicator related to the receiver clock parameter and generating a tracking parameter for comparing the receiver clock parameter and periodicity of the local clock; (d) a counter for counting events associated with the tracking parameter and generating an event count relating to the received signals; (e) a decision unit for reckoning the event count and generate a decision parameter relating to the reckoning; and (f) output logic coupled with the decision unit, the tracker and the receiver clock for evaluating the decision parameter and the tracking parameter by a logical routine for determining a need for changing operation of the receiver clock and for generating a change signal when the need exists.Type: ApplicationFiled: November 2, 2002Publication date: May 6, 2004Inventor: James B. Cho
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Publication number: 20040086064Abstract: A method to provide cross-talk cancellation in a multiple input multiple output system that comprises a plurality of outputs is described. The method comprises a step determining during a first phase and according to a heuristic model, for a first signal to be transmitted to a first output of the plurality of outputs at least one dominant interfering tone of at least one second signal to be transmitted to a second output of the plurality of outputs. The at least one dominant interfering tone is in fact a tone of at least one second signal that would generate cross-talk upon the first signal when it would be transmitted to the first output. The method further comprises a step of executing a step of partial cross-talk cancellation for the first signal during a second phase for the one or more determined dominant interfering tones associated to one or another second signal.Type: ApplicationFiled: October 23, 2003Publication date: May 6, 2004Applicant: ALCATELInventors: Katleen Peggie Florimond Van Acker, Piet Vandaele, Tom Bostoen, Marc Suzanne Paul Moonen, Raphael Jean Cendrillon
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Publication number: 20040086065Abstract: A mobile communication system is designed with an input circuit coupled to receive a first plurality of signals (rj(i+&tgr;j), i=0−N−1) during a first time (T0-T1) from an external source and coupled to receive a second plurality of signals (rj(i+&tgr;j), i=N−2N−1) during a second time (T1-T2) from the external source. The input circuit receives each of the first and second plurality of signals along respective first and second paths (j). The input circuit produces a first input signal (Rj1) and a second input signal (Rj2) from the respective first and second plurality of signals. A correction circuit is coupled to receive a first estimate signal (&agr;j1), a second estimate signal (&agr;j2) and the first and second input signals. The correction circuit produces a first symbol estimate ({tilde over (S)}1) in response to the first and second estimate signals and the first and second input signals.Type: ApplicationFiled: June 23, 2003Publication date: May 6, 2004Inventors: Anand G. Dabak, Rohit Negi
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Publication number: 20040086066Abstract: An improved data communication receiver technique is provided which avoids demodulation errors due to abrupt phase changes. A receiver is provided for processing an incoming digitized signal. The receiver comprises a pre-processing portion, a phase error correction unit and a signal evaluation unit. The pre-processing portion is adapted to process the digitized signal for providing a non-coherent pre-processed signal. The phase error correction unit is adapted to correct a phase error of the non-coherent pre-processed signal and output a coherent signal. The signal evaluation unit is adapted to extract information from the non-coherent pre-processed signal and to output a data signal representing the extracted information. The phase error correction unit and said signal evaluation unit are configured to operate simultaneously for a predetermined time.Type: ApplicationFiled: June 19, 2003Publication date: May 6, 2004Applicant: Advanced Micro Devices, Inc.Inventors: Michael Schmidt, Eric Sachse, Thomas Hanusch
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Publication number: 20040086067Abstract: A bit timing signal is regenerated from an encoded digital signal in a receiver using a predetermined sample rate Fs. An input pulse signal is generated in response to predetermined transitions of the encoded digital signal. A clock count signal is generated having a variable clock period according to cyclical counting of the clock count signal up to a count value S at the predetermined sample rate, the count value alternating between an upper value Su and a lower value Sl so that the variable clock period has an average length substantially equal to a data bit period of the encoded digital signal. The clock count signal is synchronized with the encoded digital signal by 1) counting the input pulse signals to generate a pulse count, 2) counting sampling periods between successive input pulse signals to generate a sample count, and 3) generating a sync signal if the pulse count is greater than a pulse threshold and the sample count is greater than a sample threshold.Type: ApplicationFiled: October 30, 2002Publication date: May 6, 2004Inventors: YUNG DA WANG, J. William Whikehart, John Elliott Whitecar
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Publication number: 20040086068Abstract: A method for processing a plurality of signals, comprising the steps of: sampling n samples from each of a plurality of analog signals Si(t), multiplying by corresponded m×n linearly independent function groups iaj(t), adding the resultants to establish the transformed signals S0i(t), summing all the transformed signals S0i(t) to produce a preliminary mixed signal SM(t); this preliminary mixed signal SM(t) being mathematically processed with the synchronous signal sin(qw0t) and the interruption cancellation signal sin(pw0t) which contains the basic angular frequency w0 to establish a new signal SMS(t) for transmitting; wherein, SMS(t)=Sin(pw0t)×SM(t)+Sin(qw0t). In order to cancel interruptions during transmitting, the value of signal SMS(t) is zero at the boundaries of each time period. .Type: ApplicationFiled: January 15, 2003Publication date: May 6, 2004Applicant: Extra Communication Tech. Co., Ltd.Inventor: Ming-Hsiung Lin
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Publication number: 20040086069Abstract: A method for compensating jitter in received differential data signals includes recovering a first clock signal from the received differential data signals. Re-timed differential data signals are generated based on the received differential data signals and the first clock signal. A level of jitter in the re-timed differential data signals is detected. A second clock signal is recovered from the re-timed differential data signals. Jitter-compensated differential data signals are generated based on the re-timed differential data signals, the second clock signal, and the detected level of jitter.Type: ApplicationFiled: October 30, 2002Publication date: May 6, 2004Inventors: Andy Engel, Janet L. Yun
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Publication number: 20040086070Abstract: A WLAN (Wireless Local Area Network) receiver with a synchronization unit is provided, wherein the synchronization unit comprises a frequency error correction unit configured to perform a frequency error correction process, a phase error correction unit configured to perform a phase error correction process, a filter circuit capable of applying one of at least two different filter transfer functions, wherein a first one of said at least two different filter transfer functions is a frequency error correction filter transfer function for use in said frequency error correction process and a second one of said at least two different filter transfer functions is a phase error correction filter transfer function for use in said phase error correction process, and a controller unit connected to said filter circuit to select one of said at least two different filter transfer functions.Type: ApplicationFiled: December 20, 2002Publication date: May 6, 2004Inventors: Eric Sachse, Uwe Eckhardt, Ingo Kuhn
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Publication number: 20040086071Abstract: The present invention is an analysis method for simulating accidental phenomena that may occur in a nuclear power plant system and applying them to actual safety analysis of a power plant. The present invention is an optimum evaluation system for safety analysis, which may exactly simulate thermal hydraulic phenomena in the nuclear power plant system with obtaining a suitable safety margin for various kinds of virtual accidents.Type: ApplicationFiled: January 15, 2003Publication date: May 6, 2004Inventors: Chang Sup Lee, Hwang Yong Jun, Chang Kyung Sung, Yo Han Kim, Dong Hyuk Lee
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Publication number: 20040086072Abstract: A side-slotted nozzle type double sheet spacer grid for nuclear fuel assemblies is disclosed. The spacer grid includes intersecting inner strips and four perimeter strips. Each inner strip has unit strip parts, each fabricated by integrating two unit sheet parts together into a single structure, such that the two unit sheet parts face each other and a nozzle type coolant channel is defined between the two unit sheet parts. Each perimeter strip is fabricated by integrating an inner thin sheet having the unit sheet parts with a flat outer thin sheet having a width corresponding to the width of the inner thin sheet into a single structure. The coolant channel has one or more outlets formed by cutting an upper portion of one of the two unit sheet parts of each unit strip part. Each unit sheet part has a slot longitudinally formed on each side surface of a spring that is projected from the unit sheet part to support a fuel rod within a four-walled cell.Type: ApplicationFiled: May 30, 2003Publication date: May 6, 2004Inventors: Heung Seok Kang, Kyung Ho Yoon, Hyung Kyu Kim, Kee Nam Song, Yeon Ho Jung, Tae Hyun Chun, Dong Seok Oh, Wang Kee In
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Publication number: 20040086073Abstract: An increasing monotonous counter over n bits formed as an integrated circuit, comprising: an assembly of 2n+1−(n+2) irreversible counting cells distributed in at least n groups of 2p−1 counting cells, where p designates the group rank; and at least n−1 parity calculators, each calculator providing a bit of rank p, increasing from the most significant bit of the result count, taking into account the states of the cells of the group of same rank.Type: ApplicationFiled: October 27, 2003Publication date: May 6, 2004Inventors: Luc Wuidart, Claude Anguille
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Publication number: 20040086074Abstract: An X-ray CT system is equipped with a gantry, couch and control cabinet and configured to scan a cone-beam X-ray toward an object along a given orbit to acquire cone-beam data in which a three-dimensional distribution of an X-ray absorption coefficient within the object is reflected. The control cabinet decides a degree of reliability for the cone-beam data according to an acquisition time of the cone-beam data, and then decides a weight for three-dimensional Radon data from the cone-beam data on the basis of the degree of reliability. Using this weight, the control cabinet reconstructs the three-dimensional Radon data based on a three-dimensional reconstruction algorithm. Thus, when the three-dimensional reconstruction algorithm for cone-beam CT is applied to medical CT, artifacts attributable to object's motion can be suppressed and temporal resolution can be improved.Type: ApplicationFiled: October 24, 2002Publication date: May 6, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Katsuyuki Taguchi