| Patents for H03H 17 - Networks using digital techniques (9,654) |
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| 06/18/1991 | US5025406 Adaptive digital filter for multi path distortion cancellation |
| 06/18/1991 | US5025234 Transversal filter with wide band phase shifters in series with the delay cells |
| 06/13/1991 | WO1991008616A1 Frequency multiplexer/demultiplexer for digitally represented signals |
| 06/12/1991 | EP0431537A2 A digital information signal reproducing apparatus |
| 06/11/1991 | US5023921 Method and a device for processing electric signals coming from the analysis of the line of an image |
| 06/11/1991 | US5023825 Coefficient reduction in a low ratio sampling rate converter |
| 06/11/1991 | US5023821 Digital filter operating at intermediate frequency |
| 06/11/1991 | US5023713 Motion detection circuit for use in a television |
| 06/11/1991 | US5023609 Digital deemphasis circuit |
| 06/05/1991 | EP0429725A1 Device and method for filtering weight indicative signal from weighing device |
| 06/04/1991 | US5021681 Jiter-invariant switched capacitor pulse shaper |
| 05/30/1991 | WO1991007848A1 A high speed interpolation filter for television standards conversion |
| 05/22/1991 | EP0428199A2 Receiver for digital communication system with channel estimator |
| 05/22/1991 | EP0427951A2 System to generate switching criteria and equalize adaptively in data spectrum |
| 05/21/1991 | US5018090 Digital interpolation circuitry |
| 05/15/1991 | EP0427524A1 Adaptive rounder for video signals |
| 05/15/1991 | EP0427377A2 Phased digital filtering in multichannel environment |
| 05/15/1991 | EP0313639A4 Digital signal synthesizer |
| 05/14/1991 | US5016207 High-speed digital filter processor including parallel paths for processing data, suitable for use in spatial filter image processing |
| 05/08/1991 | EP0426426A2 Filter device |
| 05/08/1991 | EP0426295A2 Communications interface apparatus with decimating circuit |
| 05/08/1991 | EP0426294A2 Decimation-interpolation circuits |
| 05/07/1991 | US5014232 Adaptive digital filter having non-recursive and recursive filter elements |
| 05/02/1991 | EP0425410A2 Signal processor with independently arithmetic and logic unit and multiplier accumulator unit simultaneously operable |
| 05/02/1991 | EP0425034A1 Method of transmitting a digital video signal and a receiver for use in the method |
| 05/01/1991 | CN1012547B Interpolator/decimator filter structure and a digital filter therefor |
| 04/30/1991 | US5012245 Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio |
| 04/24/1991 | EP0423921A2 System and method for conversion of digital video signals |
| 04/24/1991 | EP0207085B1 Signal to noise ratio enhancement using baseband signals in an fm television system |
| 04/23/1991 | US5010507 Sampled digital filter system |
| 04/17/1991 | EP0422955A2 Sound field control system |
| 04/17/1991 | EP0422796A2 An adaptive FIR filter having restricted coefficient ranges |
| 04/17/1991 | CN1012408B Interpolator/decimator filter structure and notch filter therefor |
| 04/17/1991 | CN1012393B Processor |
| 04/16/1991 | US5008940 Method and apparatus for analyzing and reconstructing an analog signal |
| 04/16/1991 | US5008674 Digital-to-analog converter using switched capacitor and transverse filter |
| 04/12/1991 | CA2027236A1 Adaptive fir filter having restricted coefficient ranges |
| 04/11/1991 | DE4030338A1 Dynamic, digital audio filter - has input audio signal receiver(s) and two delays for output delays with first bit width |
| 04/11/1991 | DE3942818C1 Async. scan rate converter - has interpolation filter increasing input scan rate and decimation filter reducing scan rate read out from holder |
| 04/10/1991 | EP0421651A2 Integral switched capacitor for filter/digital to analog converter for sigma-delta encoded digital audio |
| 04/10/1991 | EP0421526A2 Adaptive ghost cancellation circuit |
| 04/10/1991 | EP0421444A2 Pitch period searching method and circuit for speech code |
| 04/09/1991 | US5006927 Apparatus and method for separating a component of a composite digital video signal |
| 04/03/1991 | EP0420346A1 Ultrasonic echograph with digital reception beam former |
| 04/03/1991 | EP0199745B1 Analog-to-digital converter |
| 04/02/1991 | US5005120 Compensating time delay in filtering signals of multi-dimensional reconvigurable array processors |
| 03/26/1991 | US5003502 Digital filter for random variable |
| 03/26/1991 | CA1282167C Low distortion filters for separating frequency or phase modulated signals from composite signals |
| 03/20/1991 | EP0417861A2 Dynamically reconfigurable signal processor and processor arrangement |
| 03/20/1991 | CN1050116A Digital transmission system using subband coding of digital signal |
| 03/19/1991 | US5001660 Waveform generation method using stored complex data |
| 03/19/1991 | US5001445 Transport processor filter |
| 03/19/1991 | CA1281783C Method and apparatus for equalization of data transmission system |
| 03/12/1991 | US4999798 Transient free interpolating decimator |
| 03/12/1991 | US4999626 Apparatus having a modular decimation architecture |
| 03/12/1991 | CA1281382C Non-recursive half-band filter |
| 03/05/1991 | US4998288 Two dimensional hybrid digital convolver |
| 03/05/1991 | US4998241 Echo canceller |
| 03/05/1991 | CA1281080C Digital zero-if selectivity section |
| 03/01/1991 | WO1991003872A1 Conversion adaptor for wave digital filter and balancing network using wave digital filter |
| 02/27/1991 | EP0414114A1 Receiver circuit |
| 02/27/1991 | EP0131034B1 Method and apparatus for evaluating rhythmic oscillations in aperiodic physiological response systems |
| 02/26/1991 | US4996697 Deglitching means for digital communication systems |
| 02/26/1991 | US4996528 Use with an analog-digital-analog conversion device |
| 02/26/1991 | CA1280808C Calculation of filter factors for digital filter |
| 02/21/1991 | WO1991002407A1 Wideband digital equalizers for subscriber loops |
| 02/19/1991 | US4994802 Subscriber unit for wireless digital telephone system |
| 02/19/1991 | US4994801 Apparatus adaptable for use in effecting communications between an analog device and a digital device |
| 02/19/1991 | US4994769 SSB modulation and demodulation apparatus |
| 02/13/1991 | EP0412252A2 System and circuit for the calculation of a bidimensional discrete transform |
| 02/13/1991 | CN1011569B Device for eliminating fixed echoes for ultrasonic echograph |
| 02/12/1991 | US4992967 Digital filter using fourier transformation |
| 02/12/1991 | US4992714 Band pass filter device and a method of filtering using such a device |
| 02/12/1991 | CA1280159C Phase-locked loop coefficient generator for a filter arrangement having a non-rational ratio between input and output sampling frequencies |
| 02/06/1991 | EP0411504A2 Digital signal processing circuit |
| 02/05/1991 | US4991107 Vibration control system |
| 02/05/1991 | US4991010 Dual-mode image interpolation filter operable in a first mode for storing interpolation coefficients and in a second mode for effecting television standards conversion at a pixel rate |
| 02/05/1991 | US4990911 Sampling frequency converter |
| 01/30/1991 | CN1011467B Two-channel coding of digital signals |
| 01/29/1991 | US4989221 Sample rate converter |
| 01/26/1991 | WO1991001526A1 Digital filter and method of design |
| 01/10/1991 | DE3921722C1 Linear phase digital filter with limited pulse response - consists of filter cells of similar structure in series, each with three different delay paths |
| 01/09/1991 | EP0406693A2 Filtering method for digital signals |
| 01/09/1991 | EP0406410A1 Scene based nonuniformity compensation of detector sensitivity of an image detector array. |
| 01/08/1991 | US4984253 Apparatus and method for processing simultaneous radio frequency signals |
| 01/08/1991 | US4984187 First order recursive digital filter without multiplier |
| 01/08/1991 | US4983975 A/D converter |
| 01/02/1991 | EP0405679A1 Autoadaptive equalization device for duobinary coded digital samples |
| 01/01/1991 | US4982354 Digital finite impulse response filter and method |
| 12/27/1990 | EP0404237A2 Method and device for noise supression of a digital signal |
| 12/19/1990 | EP0402742A2 Noise shaping requantization circuit |
| 12/18/1990 | US4979215 Method of digitally evaluating the frequency and the phase of signals, and a device for implementing such a method |
| 12/18/1990 | CA1277919C Sampled data tone control system |
| 12/13/1990 | WO1990015495A1 Process for equalizing signals by means of test sequences |
| 12/12/1990 | EP0401562A2 Device for converting a signal with a first sampling rate to a signal with a second sampling rate |
| 12/12/1990 | EP0401396A1 Method and circuit arrangement for avoiding overflow in an adaptive recursive digital wave filter with fixed point arithmetics |
| 12/11/1990 | US4977452 Sampled-value code processing device |
| 12/11/1990 | CA1277719C Median filter |
| 12/06/1990 | DE3901614A1 Radarempfaenger, insbesondere fuer ein radar mit einer antenne, deren buendel durch berechnung erzeugt wird Radarempfaenger, in particular for a radar with an antenna, which is generated bundle calculation |
| 12/05/1990 | EP0400850A2 Generating coefficients for digital filters |