| Patents for H03H 17 - Networks using digital techniques (9,654) |
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| 05/02/1990 | EP0365785A2 Filter bank for the frequency division multiplexing or demultiplexing of channel signals |
| 04/24/1990 | US4920510 Sample data band-pass filter device |
| 04/24/1990 | US4920508 Multistage digital signal multiplication and addition |
| 04/24/1990 | US4920507 Recursive digital filter with less no-signal noise |
| 04/24/1990 | US4920480 Digital signal processor |
| 04/18/1990 | EP0363551A1 Adaptive equalization for recording systems using partial-response signaling |
| 04/17/1990 | US4918729 Voice signal encoding and decoding apparatus and method |
| 04/17/1990 | US4918637 Multichannel decimation/interpolation filter |
| 04/17/1990 | US4918524 HDTV Sub-band coding using IIR filter bank |
| 04/11/1990 | EP0362783A2 Filter |
| 04/04/1990 | EP0361806A2 Variable length time delay apparatus |
| 04/04/1990 | EP0361608A1 Adaptive pre-distortion circuit |
| 03/28/1990 | EP0360380A2 Separating components of composite digital video signals |
| 03/27/1990 | US4912667 Transmission arrangement for digital signals |
| 03/21/1990 | EP0359609A1 Variable rate digital filter for a phase modulator |
| 03/21/1990 | EP0359553A2 Recursive noise reduction filter for video components |
| 03/21/1990 | EP0358757A1 Measurement of the variation in time of a periodic signal |
| 03/20/1990 | US4910695 Code correlation arrangement |
| 03/20/1990 | US4910515 Digital signal processing circuit |
| 03/20/1990 | CA1266893A1 Frequency-domain block-adaptive digital filter |
| 03/14/1990 | CN1007197B Automatic linear compression circuit |
| 03/13/1990 | US4908787 Interpolator/decimator filter structure and a notch filter therefor |
| 03/07/1990 | EP0356903A2 Television transmission system having improved separation of audio and video spectra |
| 03/07/1990 | EP0356598A1 Digital filter for a modem sigma-delta analog-to-digital converter |
| 03/07/1990 | EP0356597A1 Improvement to digital filter sampling rate conversion method and device |
| 03/07/1990 | CN1007115B Waveform shaping circuit |
| 03/07/1990 | CN1007108B Centre control receiver |
| 03/06/1990 | CA1266526A1 Location dependent signal processor |
| 03/06/1990 | CA1266514A1 Digital filter |
| 02/28/1990 | EP0356327A1 Apparatus for picking up sound signals with noise cancellation |
| 02/28/1990 | EP0355293A2 Method and apparatus for interpolating between data samples |
| 02/26/1990 | EP0235264A4 Digital radio frequency receiver. |
| 02/22/1990 | WO1990001748A1 A segmentation method for use against moving objects |
| 02/20/1990 | US4903283 Phase determining circuit to generate a phase control signal, and method for generating said signal |
| 02/20/1990 | US4903247 Digital echo canceller |
| 02/20/1990 | US4903019 Sampling frequency converter for converting a lower sampling frequency to a higher sampling frequency and a method therefor |
| 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 |
| 02/20/1990 | CA1266095A1 Interpolator/decimator filter structure and a notch filter therefor |
| 02/15/1990 | DE3837841C1 Filter bank for the frequency-division multiplexing or frequency-division demultiplexing of channel signals |
| 02/15/1990 | DE3836396C1 Digital 90@ phase shifter circuit |
| 02/15/1990 | DE3826858A1 Two-band filter |
| 02/14/1990 | EP0354590A2 Instruction buffer for a microcomputer |
| 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 |
| 02/06/1990 | US4899150 Digital signal processing circuit |
| 02/06/1990 | CA1265589A1 Two-dimensional finite impulse response filters |
| 02/06/1990 | CA1265588A1 Infinite impulse response filters |
| 01/31/1990 | EP0352867A2 Reconfigurable multiprocessor digital filter |
| 01/30/1990 | US4897656 Complementary voltage interpolation circuit with transmission delay compensation |
| 01/30/1990 | CA1265212A1 Method and apparatus for continuous time-variant digital filtering |
| 01/25/1990 | DE3923944A1 Operating digital filter with input A=D converter - involves programmable filter parameters, changeable by terminal connectable via control point |
| 01/23/1990 | US4896320 Filter bank for frequency demultiplexing in multiple channels |
| 01/23/1990 | US4896285 Calculation of filter factors for digital filter |
| 01/23/1990 | US4896152 Telemetry system with a sending station using recursive filter for bandwidth limiting |
| 01/23/1990 | CA1264857A1 Optimal parametric signal processor |
| 01/23/1990 | CA1264856A1 Optimal parametric signal processor with lattice basic cell |
| 01/23/1990 | CA1264824A1 Waveform shaping circuit |
| 01/17/1990 | CN1038909A Digital deemphasis circuit |
| 01/16/1990 | US4894626 Variable length shift register |
| 01/09/1990 | US4893317 Digital signals and frequency correction in a digital wireless system |
| 01/09/1990 | US4893265 Rate conversion digital filter |
| 01/09/1990 | US4893264 Digital decimation filter |
| 01/03/1990 | EP0348792A1 Method and apparatus for processing electric signals obtained by scanning a line of an image |
| 12/27/1989 | EP0348100A2 Phase jitter compensation arrangement using an adaptive IIR filter |
| 12/26/1989 | US4890162 Adjustable antialias filters |
| 12/26/1989 | US4890158 Recursive noise reduction filter for video test apparatus |
| 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 | EP0346800A1 Digital separation filter |
| 12/20/1989 | EP0346508A1 Filtering method of digital audio signals |
| 12/20/1989 | CN1038197A Interpolation filter and receiver provided with such interpolation filter |
| 12/20/1989 | CN1038193A Adaptive, digital filter including non-recursive part and recursive part |
| 12/20/1989 | CN1038180A 一种高温超导体的制备工艺 Preparation of a high-temperature superconductors |
| 12/14/1989 | WO1989012360A1 Adaptive, digital filter including a non-recursive part and a recursive part |
| 12/14/1989 | WO1989012358A1 Digital-to-analogue conversion |
| 12/13/1989 | EP0345675A2 Hybrid stochastic gradient for convergence of adaptive filters |
| 12/13/1989 | EP0345608A2 Data compression system and method with buffer control |
| 12/13/1989 | EP0345365A1 Digital deemphasis circuit |
| 12/13/1989 | EP0192707B1 Method of decoding a predictively encoded digital signal |
| 12/12/1989 | CA1263900A1 Subscriber unit for wireless digital telephone system |
| 12/07/1989 | DE3836081C1 Filter bank for frequency multiplexing or frequency demultiplexing of channel signals |
| 12/06/1989 | EP0344998A1 Digital-to-analogue conversion |
| 12/06/1989 | EP0344854A1 Interpolation filter and receiver provided with such an interpolation filter |
| 12/06/1989 | EP0344794A2 Apparatus and method for processing simultaneous radio frequency signals |
| 12/06/1989 | EP0344678A2 Modulating device for a digital radio communications system |
| 12/06/1989 | EP0344579A1 Device for reducing noise and cross-colour in television signals |
| 12/06/1989 | EP0344347A1 Digital signal processing unit |
| 12/06/1989 | EP0344326A1 Fir digital filter device |
| 12/06/1989 | CN1006033B Error detection circuit |
| 11/29/1989 | EP0343792A2 A noise elimination method |
| 11/29/1989 | EP0343670A2 Data demodulation apparatus |
| 11/29/1989 | EP0343370A2 Edge effect reduction by smoothing in digital receivers |
| 11/29/1989 | EP0343317A2 Filter circuit |
| 11/29/1989 | EP0343278A1 Digital filter |
| 11/28/1989 | US4884230 Digital lattice filter |
| 11/28/1989 | US4883060 Device for eliminating fixed echoes for an ultrasonic echograph |
| 11/21/1989 | US4882754 Data compression system and method with buffer control |
| 11/14/1989 | US4881240 AM equalizer circuit for digital systems |
| 11/14/1989 | US4881191 Multichannel decimation/interpolation 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 |
| 11/07/1989 | US4879674 Input circuit for a digital phase locked loop |