Patents for H03H 21 - Adaptive networks (3,855) |
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10/04/1990 | DE4007226A1 Adaptive rauschunterdrueckungsanordnung Adaptive rauschunterdrueckungsanordnung |
09/04/1990 | US4954732 Adaptive nonlinear frequency domain filter with low phase loss |
08/22/1990 | EP0383360A2 Adaptive recognising device |
08/21/1990 | US4951269 Echo canceller with short processing delay and decreased multiplication number |
08/16/1990 | DE4001747A1 Adaptable high pass filter assembly - has controllable cut=off frequency, and passes selectively signal components of higher frequencies |
08/07/1990 | US4947480 Multichannel signal enhancement |
08/07/1990 | US4947363 Pipelined processor for implementing the least-mean-squares algorithm |
08/07/1990 | US4947362 Digital filter employing parallel processing |
08/07/1990 | US4947361 Narrowband parameter estimator |
08/01/1990 | EP0379766A1 Video processing in which high frequency luminance components are folded into a mid-band spectrum |
07/24/1990 | US4943849 Television transmission system having improved separation of audio and video spectra |
07/18/1990 | EP0377913A2 Adaptive digital filter which is responsive to the rate of change of an input signal |
07/11/1990 | EP0377300A2 Transversal and recursive filters |
07/10/1990 | US4940977 Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading |
07/10/1990 | CA1271530A1 Adaptive digital filter |
07/03/1990 | US4939749 Differential encoder with self-adaptive predictive filter and a decoder suitable for use in connection with such an encoder |
07/03/1990 | US4939685 Normalized frequency domain LMS adaptive filter |
06/27/1990 | CN1008584B Adaptive equalizer |
06/20/1990 | EP0373468A2 A pipelined processor for implementing the least-mean-squares algorithm |
06/12/1990 | CA1270322A1 Adaptive comb filter |
06/06/1990 | EP0371567A2 Echo canceller |
06/05/1990 | US4931977 Vectorial adaptive filtering apparatus with convergence rate independent of signal parameters |
05/22/1990 | US4928287 Automatic equalizer |
05/16/1990 | EP0368013A1 Circuit for an adaptive comb filter for separating the luminance and chrominance signals of a composite PAL or NTSC video signal |
05/03/1990 | WO1990004906A1 Adaptive pal or nstc comb filter |
04/24/1990 | US4920530 Adaptive time-discrete filter for forming a cancelling signal from synchronous data symbols |
04/18/1990 | EP0363551A1 Adaptive equalization for recording systems using partial-response signaling |
04/17/1990 | US4918515 Compatible television transmission system with separate preemphasis path within single channel |
04/03/1990 | US4914639 Sonar doppler system with a digital adaptive filter |
03/21/1990 | EP0358757A1 Measurement of the variation in time of a periodic signal |
03/20/1990 | CA1266893A1 Frequency-domain block-adaptive digital filter |
03/14/1990 | EP0358453A2 Digital luminance/chrominance separation apparatus |
03/08/1990 | WO1990002447A1 Signal processing means for sensing a periodic signal in the presence of another interfering periodic noise |
03/08/1990 | WO1990002380A1 Selective active cancellation system for repetitive phenomena |
03/07/1990 | EP0356903A2 Television transmission system having improved separation of audio and video spectra |
02/28/1990 | EP0356088A2 Improvements relating to colour television signal processing |
02/20/1990 | US4903247 Digital echo canceller |
02/20/1990 | CA1266104A1 Arrangement for compensating for non-linear distortion in an input signal to be digitized and an echo cancelling system comprising such an arrangement |
02/13/1990 | CA1265854A1 Adaptive filter for producing an echo cancellation signal in a transceiver system for duplex digital communication through one single pair of conductors |
02/13/1990 | CA1265847A1 Adaptive time-discrete filter for forming a cancelling signal from synchronous data symbols |
02/06/1990 | CA1265594A1 Echo cancellers for bidirectional digital transmission systems |
01/24/1990 | EP0351843A2 Digital adaptive filter and method of convergence therein |
12/27/1989 | EP0348163A2 Compatible television transmission system with separate pre-emphasis path within single channel |
12/27/1989 | EP0348100A2 Phase jitter compensation arrangement using an adaptive IIR filter |
12/20/1989 | EP0347394A1 Adaptive, digital filter including a non-recursive part and a recursive part |
12/20/1989 | EP0347038A2 DTMF receiver |
12/20/1989 | CN1038193A Adaptive, digital filter including non-recursive part and recursive part |
12/14/1989 | WO1989012360A1 Adaptive, digital filter including a non-recursive part and a recursive part |
12/13/1989 | EP0345675A2 Hybrid stochastic gradient for convergence of adaptive filters |
12/06/1989 | EP0344579A1 Device for reducing noise and cross-colour in television signals |
11/23/1989 | EP0342782A2 Electroacoustic system with electronic filters |
11/21/1989 | US4882668 Adaptive matched filter |
11/09/1989 | DE3807147A1 Verfahren und anordnung zur messung des zeitlichen verlaufs eines periodischen signals mit hoher zeitaufloesung nach einem boxcar-aehnlichen verfahren The method and process arrangement for measuring the temporal course of a periodic signal with high time resolution according to a similar boxcar |
11/02/1989 | WO1989008266A3 Measurement of the variation in time of a periodic signal |
11/02/1989 | EP0339819A2 Electronic filter |
10/31/1989 | US4878188 Selective active cancellation system for repetitive phenomena |
10/11/1989 | EP0336684A2 Noise reduction in the playback of recorded sound |
09/27/1989 | EP0334714A1 Differential coder with a self-adaptive filter, and decoder for said coder |
09/26/1989 | CA1261008A1 Adaptive transversal filter |
09/26/1989 | CA1260553A1 Digital filters |
09/19/1989 | US4868775 Adaptive digital filter |
09/19/1989 | US4868650 Circuitry for expanding the effect of a video control signal in multiple dimensions |
09/19/1989 | EP0316402A4 A fast median filter. |
09/13/1989 | EP0332079A2 Adaptive equalizer system |
09/12/1989 | US4866648 Digital filter |
09/08/1989 | WO1989008266A2 Measurement of the variation in time of a periodic signal |
08/29/1989 | US4862449 Adjustable echo canceller |
08/24/1989 | WO1989007864A1 Multipath reduction system |
08/08/1989 | CA1258301A1 Non-linear adaptive filters |
08/02/1989 | EP0325590A1 Circuitry for converting measurement signals disturbed by a disturbance function into undisturbed signals. |
07/25/1989 | US4852036 Adaptive digital filter and an echo canceler incorporating the same |
07/25/1989 | CA1257914A1 Adaptive automatic equalizer |
07/19/1989 | EP0324029A1 Adaptive noise cancellation in a closed loop control system |
07/11/1989 | US4847864 Phase jitter compensation arrangement using an adaptive IIR filter |
07/11/1989 | US4847682 Adaptive comb filter for artifact-free decoding |
07/04/1989 | US4845758 Equalizer with adjustable band filters and a digital filter suitable for use in the equalizer |
06/28/1989 | EP0322060A2 Adjusting filter coefficients |
06/27/1989 | US4843583 Nonlinear adaptive filter |
06/21/1989 | EP0321045A2 Adaptive comb filter for artifact-free decoding |
05/24/1989 | EP0316402A1 A fast median filter |
05/23/1989 | US4833691 Line equalizer |
05/23/1989 | US4833634 Multipurpose adaptive filter |
05/23/1989 | US4833399 DTMF receiver |
05/16/1989 | US4831463 Video processing in which high frequency luminance components are folded into a mid-band spectrum |
05/10/1989 | CN1032890A Adaptive-filter single-bit digital encoder and decorder and adaptation control circuit responsive to bit-stream loading |
05/09/1989 | US4829299 Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading |
04/13/1989 | DE3733132A1 Circuit arrangement for acoustic compensation of the ambient noise in the case of headphone (earphone) reception |
04/11/1989 | US4821037 Wideband adaptive array using the chirp transform |
03/29/1989 | EP0308826A2 Adaptive-filter single-bit digital encoder and decoder with adaptation control circuit responsive to bitstream loading |
03/29/1989 | EP0308501A1 Digital adaptive filter |
03/28/1989 | US4817081 Adaptive filter for producing an echo cancellation signal in a transceiver system for duplex digital communication through one single pair of conductors |
03/22/1989 | EP0307453A1 I-q channel adaptive line enhancer |
03/21/1989 | CA1251527A1 Adaptive stop-notch filter |
03/15/1989 | EP0307035A2 Adjusting filter coefficients |
03/15/1989 | CN1031166A Adjustable echo canceller |
03/07/1989 | US4811261 Adaptive digital filter for determining a transfer equation of an unknown system |
03/07/1989 | CA1250910A1 Asynchronous and non-data decision directed equalizer adjustment |
02/28/1989 | CA1250657A1 Adaptive filtering system |
02/21/1989 | US4807173 Frequency-domain block-adaptive digital filter |
02/21/1989 | CA1250348A1 Adaptive noise suppressor |