| Patents for H03H 17 - Networks using digital techniques (9,654) |
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| 05/07/1997 | DE19540721A1 Digital signal processing with determination and/or compensation of interference signal component |
| 05/07/1997 | CN1149217A Signal processing device |
| 05/06/1997 | US5627859 Time-reversed infinite impulse response digital filtering |
| 05/06/1997 | US5627776 Data processing circuit |
| 05/02/1997 | EP0771093A2 Signal interpolator for timing recovery |
| 05/02/1997 | EP0771071A1 Matched filter circuit |
| 04/29/1997 | US5625583 Analog memory system having an integrated circuit frequency domain processor |
| 04/29/1997 | US5625581 Non-integral delay circuit |
| 04/29/1997 | US5625505 Method of and apparatus for regenerating partial-response record signal |
| 04/29/1997 | US5625358 Digital phase-locked loop utilizing a high order sigma-delta modulator |
| 04/29/1997 | US5625357 For a digital-to-analog conversion circuit |
| 04/28/1997 | CA2188693A1 Signal interpolator |
| 04/23/1997 | EP0769877A2 Image subband encoding/decoding apparatus and method |
| 04/23/1997 | EP0769849A1 Method for digital wide-band filtering and filter using this method |
| 04/22/1997 | US5623377 Filtering a read signal to attenuate secondary pulses caused by pole tips of a thin film magnetic read head |
| 04/22/1997 | US5623318 Ghost cancelling method and apparatus using canonical signed digit codes |
| 04/20/1997 | CA2188311A1 Wideband digital filtering process and filter implementing said process |
| 04/17/1997 | WO1997014227A1 Co-channel interference reduction |
| 04/16/1997 | EP0739563A4 Higher order digital phase loop filter |
| 04/16/1997 | EP0632947A4 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization. |
| 04/16/1997 | CN1147728A Finite impulse response filter |
| 04/15/1997 | US5621800 Integrated circuit that performs multiple communication tasks |
| 04/15/1997 | US5621675 Digital decimation and compensation filter system |
| 04/15/1997 | US5621474 Filter working on image digital signals for video appliances |
| 04/15/1997 | US5621404 Digital-to-digital sample rate converter |
| 04/10/1997 | WO1997013325A1 Variable sample-rate dac/adc/converter system |
| 04/09/1997 | EP0767569A1 Method and device for adaptive identification and related adaptive echo canceller |
| 04/09/1997 | CN1147167A Comb filter with smaller number of delay elements and radio receiver transmitter having said filter |
| 04/08/1997 | US5619579 Reverberation imparting apparatus |
| 04/08/1997 | US5619543 Digital phase-locked loop filter |
| 04/08/1997 | US5619539 Data detection methods and apparatus for a direct access storage device |
| 04/08/1997 | US5619536 Digital superheterodyne receiver and baseband filter method used therein |
| 04/08/1997 | US5619445 Analog memory system having a frequency domain transform processor |
| 04/08/1997 | US5619270 Sample rate converter and sample rate conversion method |
| 04/03/1997 | DE19627787C1 Non-recursive half band filter with complex coefficients |
| 04/02/1997 | EP0766413A2 Fast response gain tracker for echo canceller |
| 04/02/1997 | EP0766412A2 Echo canceller using initial training |
| 04/02/1997 | EP0766411A2 Method and apparatus for reducing communications echo signal |
| 04/02/1997 | EP0766390A2 Time domain filter for a communication channel |
| 04/02/1997 | EP0766388A2 Method for processing signal in CSD filter and circuit suitable for the method |
| 04/02/1997 | EP0766387A1 Digital filter and apparatus for reproducing sound using the digital filter |
| 04/02/1997 | EP0766386A2 Apparatus for reducing quantization distortion |
| 04/02/1997 | CN1146666A Circuit matched with wave filter |
| 04/02/1997 | CN1146665A Circuit matched with wave filter |
| 04/01/1997 | US5617450 Digital subscriber loop interface unit |
| 04/01/1997 | US5617344 Digital filter |
| 04/01/1997 | US5617088 Sampling frequency converting device and memory address control device |
| 03/30/1997 | CA2186417A1 Echo canceler gain tracker for cellular modems |
| 03/30/1997 | CA2186405A1 Echo canceling method and apparatus for data over cellular |
| 03/30/1997 | CA2186404A1 Echo cancelling method and apparatus for data over cellular |
| 03/27/1997 | WO1997011527A1 Transmission system using time dependent filter banks |
| 03/27/1997 | DE19602123C1 Suppression filter for periodic interference in rolling mill |
| 03/26/1997 | EP0765066A2 Efficient speakerphone anti-howling system |
| 03/25/1997 | US5615380 Integrated circuit computer system having a keyboard input and a sound output |
| 03/25/1997 | US5615234 Digital high-pass filter having baseline restoration means |
| 03/25/1997 | US5615142 Analog memory system storing and communicating frequency domain information |
| 03/25/1997 | US5615139 Apparatus and method for synthesizing a sinusoidal signal |
| 03/25/1997 | CA2107320C Audio signal processing apparatus with optimization process |
| 03/20/1997 | WO1997004525A3 A wireless digital communication device, and a pulse shaping network |
| 03/19/1997 | EP0763903A1 Communication apparatus |
| 03/19/1997 | EP0763892A1 Perfect reconstruction lattice filter bank |
| 03/19/1997 | EP0763890A1 Matched filter |
| 03/19/1997 | CN1145553A Method and apparatus for compression using reversible wavelet transforms and embedded codestream |
| 03/18/1997 | US5613084 Interpolation filter selection circuit for sample rate conversion using phase quantization |
| 03/18/1997 | CA2045250C Echo canceler having adaptive digital filter unit associated with delta-sigma modulation circuit |
| 03/13/1997 | WO1997009790A1 A decimating prml signal processor system |
| 03/13/1997 | WO1997009781A1 Decision feedback filter device in the frequency domain |
| 03/13/1997 | WO1997009780A1 Improved digital filter |
| 03/12/1997 | EP0762647A1 Comb filter with a smaller number of delay elements |
| 03/12/1997 | EP0762645A1 Filter circuit for communication |
| 03/12/1997 | CN1144990A Digital signal processor |
| 03/11/1997 | US5610950 Communication device with reduced sensitivity to in-channel interference |
| 03/11/1997 | US5610944 Process and device for segmentation into sub-bands and for reconstruction of a digital signal, and corresponding device |
| 03/11/1997 | US5610942 Digital signal transcoder and method of transcoding a digital signal |
| 03/11/1997 | US5609155 Apparatus for filtering a plurality of doppler or time shift signals |
| 03/06/1997 | WO1997008827A1 Fir interpolator with zero order hold and fir-spline interpolation combination |
| 03/06/1997 | WO1997008611A1 Method and system for performing an iir filtering operation |
| 03/06/1997 | WO1997008606A1 Method and system for performing an fir filtering operation |
| 03/05/1997 | EP0760575A2 Echo canceller with adaptive and non-adaptive filters |
| 03/05/1997 | EP0760574A2 Echo canceller system with shared coefficient memory |
| 03/04/1997 | US5608804 Method of and apparatus for identifying a system with adaptive filter |
| 03/04/1997 | US5608400 Selectable intermediate frequency sigma-delta analog-to-digital converter |
| 02/26/1997 | EP0759233A1 Digital-to-digital conversion using nonuniform sample rates |
| 02/26/1997 | EP0759198A1 Efficient median filter and method therefor |
| 02/25/1997 | US5606619 Circuit arrangement for deriving a signal indicating noise in a received stereo multiplex signal |
| 02/25/1997 | US5606575 FFT-based channelizer and combiner employing residue-adder-implemented phase advance |
| 02/25/1997 | US5606319 Method and apparatus for interpolation and noise shaping in a signal converter |
| 02/25/1997 | US5605157 Systems and methods for filtering signals derived from biological events |
| 02/20/1997 | WO1997006483A1 A fast and efficient median search method and filter |
| 02/19/1997 | EP0758817A1 Equaliser for digital signals |
| 02/19/1997 | CN1143221A Sampling frequency changing device and memory address control device |
| 02/18/1997 | US5604774 Fully secondary DPLL and destuffing circuit employing same |
| 02/13/1997 | WO1997005748A1 Jpeg compression circuit with filtering |
| 02/12/1997 | EP0757818A1 Dynamic digital filter using neural networks |
| 02/11/1997 | US5602999 Memory system having a plurality of memories, a plurality of detector circuits, and a delay circuit |
| 02/11/1997 | US5602934 Adaptive digital image signal filtering |
| 02/11/1997 | US5602927 Vehicle internal noise reduction system and the method thereof |
| 02/11/1997 | US5602926 Method and apparatus of determining the sound transfer characteristic of an active noise control system |
| 02/11/1997 | US5602870 Digital signal processing |
| 02/11/1997 | US5602762 Digital sample rate conversion |