| Patents for H03H 17 - Networks using digital techniques (9,654) |
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| 11/02/1989 | WO1989008266A3 Measurement of the variation in time of a periodic signal |
| 11/02/1989 | EP0339819A2 Electronic filter |
| 11/02/1989 | EP0339037A1 Non-recursive half-band filter. |
| 10/31/1989 | US4878029 Complex digital sampling converter for demodulator |
| 10/19/1989 | WO1989010027A1 Variable rate rectangular matched filter |
| 10/18/1989 | EP0337458A2 Apparatus for synthesizing analog signals in PCM |
| 10/11/1989 | EP0336685A2 Impulse noise detection and supression |
| 10/11/1989 | EP0336684A2 Noise reduction in the playback of recorded sound |
| 10/11/1989 | EP0336669A2 Sampling frequency converter |
| 10/11/1989 | EP0336272A2 Pulse compression filter |
| 10/04/1989 | EP0335371A2 Digital filter for executing a video emphasis process through mode selection |
| 10/03/1989 | US4872170 Error detection circuit |
| 10/03/1989 | US4872129 Digital decimation filter |
| 09/26/1989 | US4870661 Sample rate conversion system having interpolation function |
| 09/26/1989 | US4870559 Intelligent transducer |
| 09/26/1989 | CA1261084A1 Method for adapting two systems with different scanning rates |
| 09/26/1989 | CA1261082A1 Multiplexed real-time pyramid signal processing system |
| 09/26/1989 | CA1261069A1 Two-channel coding of digital signals |
| 09/26/1989 | CA1261008A1 Adaptive transversal filter |
| 09/26/1989 | CA1260554A1 Two dimensional digital spatial filter for enhancement of point source |
| 09/26/1989 | CA1260553A1 Digital filters |
| 09/26/1989 | CA1260077A1 Digital phase shifter |
| 09/20/1989 | EP0333566A1 Method and devices for the translation along the frequency axis of the modulus of the transfer function of a filter |
| 09/19/1989 | US4868774 Digital waveform generator and associated method |
| 09/19/1989 | US4868773 Digital filtering by threshold decomposition |
| 09/19/1989 | US4868572 Circuit arrangement for converting digital sound-signal values into an analog sound signal |
| 09/19/1989 | EP0316402A4 A fast median filter. |
| 09/13/1989 | EP0332079A2 Adaptive equalizer system |
| 09/13/1989 | EP0331963A1 Integrated decimating digital filter |
| 09/12/1989 | US4866649 Multi-dimensional digital filter having adders, multipliers and shift elements |
| 09/12/1989 | US4866648 Digital filter |
| 09/12/1989 | US4866647 Continuously variable digital delay circuit |
| 09/08/1989 | WO1989008266A2 Measurement of the variation in time of a periodic signal |
| 09/07/1989 | DE3806274A1 Digital non-recursive filter |
| 09/05/1989 | US4864526 Interpolator/decimator filter structure and a digital filter therefor |
| 08/30/1989 | CN1035215A Digital decimation filter |
| 08/29/1989 | US4862449 Adjustable echo canceller |
| 08/29/1989 | US4862404 Digital circuit for suppressing fast signal variations |
| 08/29/1989 | US4862403 Digital filter |
| 08/29/1989 | US4862402 Fast multiplierless architecture for general purpose VLSI FIR digital filters with minimized hardware |
| 08/29/1989 | US4862103 Variable equalization system |
| 08/23/1989 | EP0329403A2 Method and apparatus for analysing and reconstructing an analogue signal |
| 08/23/1989 | EP0329381A2 Sampled data subsampling apparatus |
| 08/22/1989 | US4860373 Location dependent signal processor |
| 08/22/1989 | US4859883 Digital circuit arrangement for quantization-noise reduction |
| 08/16/1989 | EP0327966A1 Transverse filter |
| 08/09/1989 | EP0327445A1 Generalised digital multiplier, and digital filter using this multiplier |
| 08/09/1989 | EP0327268A2 Interpolator for and method of interpolating digital samples |
| 08/09/1989 | EP0326905A1 Hearing aid signal-processing system |
| 08/09/1989 | EP0326672A1 Method and arrangement for the transmission of digital signals |
| 08/08/1989 | US4856026 Data transmission system comprising smearing filters |
| 08/08/1989 | CA1258301A1 Non-linear adaptive filters |
| 08/02/1989 | EP0326210A2 Multiplicative sieve signal processing |
| 08/01/1989 | US4853797 Fir type digital filter for recording and reproducing apparatus |
| 07/27/1989 | WO1989006877A1 Noise reduction |
| 07/25/1989 | US4852175 Hearing aid signal-processing system |
| 07/25/1989 | US4852068 Seismic signal velocity filtering |
| 07/25/1989 | US4852035 Simple coefficient half-bandwidth digital filter for video data compression |
| 07/25/1989 | US4852034 Digital filter |
| 07/13/1989 | DE3744187A1 Adjustable filter |
| 07/12/1989 | EP0323870A2 Signal equalising arrangement and method, using a feedback equaliser |
| 07/11/1989 | US4847864 Phase jitter compensation arrangement using an adaptive IIR filter |
| 07/05/1989 | EP0323200A2 Circuit and method for sampling frequency conversion |
| 07/04/1989 | US4845758 Equalizer with adjustable band filters and a digital filter suitable for use in the equalizer |
| 07/04/1989 | CA1256982A1 Digital video delay by sample interpolation |
| 07/04/1989 | CA1256969A1 Median filter for reducing data error in distance measuring equipment |
| 06/28/1989 | EP0322060A2 Adjusting filter coefficients |
| 06/28/1989 | EP0322038A1 Digital pre-modulation filter |
| 06/27/1989 | US4843586 Distributed sampling of electrical and optical signals using coded switched electrode travelling wave modulators |
| 06/27/1989 | US4843582 Digital filter in which linear combinations of powers of two are converted to binary numbers using wallace trees |
| 06/27/1989 | US4843581 Digital signal processor architecture |
| 06/26/1989 | EP0305385A4 Digital zero if selectivity section. |
| 06/21/1989 | EP0320517A1 Digital decimation filter |
| 06/20/1989 | US4841552 Digital phase shifter |
| 06/20/1989 | US4841466 Bit-serial integrator circuitry |
| 06/20/1989 | US4841463 Nonrecursive digital filter |
| 06/15/1989 | WO1989005544A1 Fir digital filter device |
| 06/13/1989 | US4839889 Digital filter tree |
| 06/13/1989 | US4839652 Method and apparatus for high speed digital phased array coherent imaging system |
| 06/07/1989 | EP0319097A2 Complementary voltage interpolation circuit with transmission delay compensation |
| 06/06/1989 | US4837723 Method and apparatus for continuous time-variant digital filtering |
| 06/06/1989 | CA1255361A1 Digital analysing and synthesizing filter bank with maximum sampling rate reduction |
| 05/30/1989 | US4835725 Apparatus and method for multistage electrical signal processing |
| 05/30/1989 | US4835724 Apparatus and method of quantizing a set of weights for a weighted sun signal processing system |
| 05/30/1989 | US4835723 Phase coordinated multistage digital filter |
| 05/24/1989 | EP0316402A1 A fast median filter |
| 05/23/1989 | US4833691 Line equalizer |
| 05/23/1989 | US4833399 DTMF receiver |
| 05/23/1989 | CA1254659A1 Programmed implementation of real-time multiresolution signal processing apparatus |
| 05/10/1989 | EP0134810B1 Apparatus and method for suppressing side lobe response in a digitally sampled system |
| 05/10/1989 | CN1032890A Adaptive-filter single-bit digital encoder and decorder and adaptation control circuit responsive to bit-stream loading |
| 05/09/1989 | US4829463 Programmed time-changing coefficient digital filter |
| 05/09/1989 | US4829378 Sub-band coding of images with low computational complexity |
| 05/09/1989 | US4829299 Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading |
| 05/05/1989 | WO1989004088A1 Improved filtering techniques |
| 05/03/1989 | EP0313639A1 Digital signal synthesizer |
| 05/03/1989 | DE3735933A1 Digital filter with undersampling |
| 05/02/1989 | US4827443 Corrective digital filter providing subdivision of a signal into several components of different frequency ranges |
| 05/02/1989 | CA1253581A1 Peak position detector |
| 04/26/1989 | EP0313019A2 Phase signal filtering apparatus utilizing estimated phase signal |