Arithmetic circuit An arithmetic circuit includes a NOR circuit for outputting 1-bit inverted logical OR sf from all of a first bit group x( 6 ) to x( 10 ) containing 0 or more high-order bit of a path metr...
A sampling device for analog signal The disclosed sampling device for analog signal comprises a sampling hold circuit and an offset circuit to turn on or off transistor in last circuit. Wherein, when turning on the transist...
8
00118984
Variable-length coding method and device A variable length coding method and apparatus is provided. The variable length coding method includes the steps of analyzing the occurrence statistics of symbols with respect to previous ...
Interpolation circuit for encoder Output of an encoder are sampled by A/D converters 11a and 11b to be converted to N bits A-phase and B-phase digital data DA and DB. In a look-up table memory 12, reference phase angle da...
12
00119509
High-speed Turbo code decoder
The high-speed Turbo code decoder includes one decoder, one memory unit, two interleavers, one deinterleaver to produce soft information data in normal order, three selectors, one calcul...
13
00113587
Wavelet filter for data compression and decompression
The small wave filter is used to do small wave decomposition and small wave reconsitution for the data needing to compress or decompress. In the invention method, selected is a small wav...
Current source cell arrangement and digital-to-analog converter The object of the present invention is to form a highly accurate current source for DA converters. Letters from a1 to an where n is at least 4 represent current source cells that output c...
Coding circuit and digital signal processing circuit An encoding circuit is disclosed which comprises: a data-for-encoding storing register that stores n-bit data for encoding; a data-for-calculation storing register that stores m-bit data ...
Integrated circuit tester The object of the present invention is to execute an integrated circuit tester capable of carrying out mesurement with high distinguishability and high precision without adopting the shi...
23
200610144325
A/D converter Completely CMOS technology and design is adopted in the invention. The main part of this A/D converter consists of the drive circuit, the quantization device, the low bits pre-coder, the ...
24
200610146820
Method for high frequency reconstruction and apparatus thereof A method and apparatus to restore a high frequency component. A correlation between an input signal and previously stored noise samples is obtained and a bandwidth of the input signal is ...
Time-interleaved AD converter In a time-interleaved AD converter which combines together low-speed high-resolution AD converters for effective high speed operation, various deterioration factors possessed by each of t...
27
200610145179
Image coding device, method and computer program Provided is an image coding device in which entropy coding is applied to binarized data, thereby processing image data at a high speed. The image coding device has: an image coding unit w...
28
200610145182
A method and device to realize low density parity check code The disclosed realization method for LDPC comprises: A. according to preset code length, code rate and row weight, setting digital sequence for parity check matrix; B. circular shifting t...
Apparatus and method for processing analog encoder signals An apparatus and a method for processing signals of an analog encoder for generating quadrature signals to control a rotation of a motor using the analog encoder are provided. The apparat...
31
200610114619
A method and system for keyboard scan The invention relates to a method for scanning keyboard, which comprises that: A, based on preset sequence, scanning keyboard one time in one scanning period, and finding the state of but...
32
200610114532
Signal processing method and device The invention relates to a signal processing method, which comprises that: A, amplifying analogue signal according present increment value, to be converted into digit signal; B, reducing ...
33
200610146512
Adaptive modulation and coding method The present invention provides an adaptive modulation and coding (AMC) method for data transmission by various modulation orders and coding rates is provided. Firstly a signal-to-noise ra...
AD converter and display unit An AD converter includes: a reference voltage generator circuit having a plurality of resistors connected in series with predetermined reference voltage applied to both ends thereof, the ...
Device for testing an analog-/digital converter The invention relates to a device for testing an analog-to-digital converter providing a digital signal at a given sampling frequency, comprising a unit for providing a test signal to the...
Deinterleaver and multi-carrier communication system A de-interleaver for data decoding. Two memory banks are configured to store data in column order and output the data in row order. A de-interleaving encoder receives a stream of interlea...
User datagram protocol message processing method and device The invention discloses a user datagram protocol message processing method, comprising: adding redundancy check block and check identification code in a to-be-sent message; and after dete...
Semiconductor device A semiconductor device includes a semiconductor substrate; and a trapezia resistor formed on the semiconductor substrate. The trapezia resistor comprises a plurality of spindly resistor p...
Coding method for high code rate length limit code This invention discloses a method for coding and decoding data, namely carries out limited code and decode of high code rate running length in data storage and communication environment i...
50
200610142398
Digitizer A digitizer and a related charge pump are provided. The charge pump includes an input coupled to the output of the comparator and receiving the output of the comparator as a control signa...
Inversion cascade coding/decoding method This is a reversal cascaded encoding/decode method. An encoding method is that. Carry HRRLL encoding to user data and get first limited serial, open up to midst serial, and RS correcting ...
Signal decoding method and device, and signal storage system An LDPC unit decoder included in a signal decoding device is provided with a parity checking unit that is a multiplier for performing multiplication of a check matrix (parity check matrix...
58
200610154303
Trigonometric integral modulator with self-correction function The invention discloses a self-calibrating delta integral modulator which determines whether time constants of its internal integrators are too large or too small by injecting a calibrati...
59
200610126193
Precision low noise-delta-sigma adc A delta-sigma converter has coarse and fine ADCs, wherein an integrated error signal is coupled to the coarse ADC whose output drives a DAC to create feedback that achieves loop balance. ...
60
200610129196
Pipeline ADC with minimum overhead digital error correction The most hardware efficient way to implement an N-stage pipeline ADC is to use (G 1)-level ADC-DAC for its first (N-1) stages and use (2.G-1)-level ADC for the last stage, where G is the ...
61
200610151480
Phase detection device and method thereof A phase detection device comprising an analog-digital converter, an interpolator, and a determining unit. The analog-digital converter receives an analog signal and converts the analog si...
Devices and methods for data compression and decompression A device for data compression includes a domain transformer unit, a classifying unit, a variable length encoder, a fixed length encoder and a memory unit. The domain transformer unit tran...
Digital-to-analog converter circuit The invention provides a technology whereby digital analog conversion utilizing a capacitance ratio can accurately be executed. The 0-order bit data are supplied to a capacitor 430-0 via ...
Coding-decoding method and device The existed coding/decoding method with low density odd-even check code cannot reduce the small circulation existing in the checking matrix. The said small circulation depresses the codin...
72
200610115522
Quadrature frequency changer, tuner and modulator A quadrature frequency changer comprises first and second mixers (4-6, 7-9) and a local oscillator (10-12). The local oscillator (10-12) provides first and second commutating signals whic...
Capacitive digital to analog and analog to digital converters A digital-to-analog converter (DAC) comprises a capacitive DAC that comprises N first capacitances that are connected in parallel and that have first ends and second ends, wherein N is an...
77
200610104266
Capacitive digital to analog and analog to digital converters A digital-to-analog converter (DAC) comprises a capacitive DAC that comprises N first capacitances that are connected in parallel and that have first ends and second ends, wherein N is an...
Device and method for controlling current gain A wide gain range current digital-to-analog converter (DAC) is presented that includes a unit current cell having a current source module biased by a current source voltage bias, a differ...
Capacitive digital to analog and analog to digital converters A digital-to-analog converter (DAC) comprises a capacitive DAC that comprises N first capacitances that are connected in parallel and that have first ends and second ends, wherein N is an...
DSV control apparatus and DSV control method A digital sum value (DSV) control apparatus inserts a DC control bit for each DC control block. The apparatus includes a first DSV accumulated value comparator for setting a target flag t...
Transfer type radio fixed wide band inserting technology A radio fixed wideband access system of independently active type comprises terminal transceiving device, user antenna and base station antenna. It is featured as electric-connecting boun...
Method for coding high density optical disk modulating code A method is provided for encoding the modulation code of high-density optical disk. The character is as follow. The run length is 1 to 10 and the code rate is 4/6. Add DC control bit in t...
92
200610103969
Decoding method and decoding device This invention discloses a decoding method including: A, reading deletion pattern sequences and setting traced depth M, B, computing branch measurement to the first M bits based on the cu...
Method and apparatus to emulate a filter A system, apparatus, method and article to emulate a filter are described. The apparatus may include a digital-to-analog converter (504-1,...504-n) having an impulse response emulator(504...
95
200610143150
Method and apparatus to emulate a filter using digital elements A system, apparatus, method and article to emulate a filter using digital elements are described. The apparatus may include a digital-to-analog converter (110, 500) having an impulse resp...
Averaging analog-to-digital converter An analog-to-digital converter has one or more first stage comparators for generating a set of first stage comparator digital outputs, and a set of first stage comparator analog outputs u...
99
200610098596
Error correction coding method
The disclosed error correcting coding method comprises: 1. calculating error correcting code quantity; 2. deciding whether the quantity over 32, yes to step 3, or else to step 4; 3. part...
100
200610052434
Hafman decoding method This invention relates to a Harfman decoding method for looking up tables in parallel, which can make up of a Harman tree and a code list flexibly based on the demand on performance and r...
