| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 09/19/1989 | US4868806 An information recording apparatus for recording a directory information unit on a single recording track of a recording medium based on the number of directory information units previously recorded in the single recording track |
| 09/19/1989 | US4868690 Self-initializing 1,7 code decoder with low sensitivity to errors in preamble |
| 09/19/1989 | US4868689 Circuit for producing clock signal for reproducing PCM signal |
| 09/19/1989 | US4868686 Method and system for recording asynchronous biphase encoded data on a video tape recorder and for recovering the encoded recorded data |
| 09/19/1989 | CA1259706A1 Method of and arrangement for restoring invalid samples of an equidistantly sampled signal |
| 09/19/1989 | CA1259694A1 Pcm audio signal reproducing apparatus |
| 09/19/1989 | CA1259692A1 Apparatus for recording and/or reproducing an information signal comprised of at least an audio signal and an index signal |
| 09/14/1989 | DE3807620A1 Method for converting digitally acquired sound signals into acoustically reproducible analog sound signals |
| 09/13/1989 | EP0332079A2 Adaptive equalizer system |
| 09/13/1989 | EP0331935A2 Data storage apparatus and method of handling failures therein |
| 09/13/1989 | EP0331715A1 Automatic gain control system |
| 09/13/1989 | CN1035577A System for transferring information using information carrier |
| 09/13/1989 | CN1035575A Method of and apparatus for recording information signal |
| 09/12/1989 | US4866741 3/2 Frequency divider |
| 09/12/1989 | US4866719 System and method for performing error correction on still frame audio tape format video signals |
| 09/12/1989 | US4866717 Code error detecting and correcting apparatus |
| 09/12/1989 | US4866692 Method and apparatus for information recording and reproduction of a pit-shape-forming optical recording type |
| 09/12/1989 | US4866691 AC amplifying RF signal processing circuit for optical disk player |
| 09/12/1989 | US4866648 Digital filter |
| 09/12/1989 | US4866636 Method and apparatus for uniformly encoding data occurring with different word lengths |
| 09/12/1989 | US4866546 Recording and reproducing apparatus for disk-type recording media |
| 09/12/1989 | US4866544 Data modulation and demodulation system for magnetic recording system |
| 09/12/1989 | US4866440 Method for compressing and restoring data series and apparatus for realizing same |
| 09/12/1989 | US4866394 Phase synchronizing circuit for a time axis shift correcting circuit |
| 09/12/1989 | CA1259402A1 Method and apparatus for recording pcm signal |
| 09/08/1989 | WO1989008357A1 Device for monitoring acoustic signal processing systems |
| 09/07/1989 | DE3806414A1 Method of copy protection for recorders |
| 09/07/1989 | DE3806413A1 Recorder with copy protection |
| 09/07/1989 | DE3806411A1 Method for transmitting an audio signal and an auxiliary signal |
| 09/06/1989 | EP0330732A2 Method and apparatus for recording and reproducing picture information together with supplementary information for modification of the reproduced picture information |
| 09/06/1989 | CN2043946U Automobile accident cause analytical device |
| 09/05/1989 | US4864573 Apparatus for reproducing a pcm modulated signal, comprising a muting circuit |
| 09/05/1989 | US4864572 Framing bitstreams |
| 09/05/1989 | US4864571 Information recording/reproducing apparatus with prioritized read out |
| 09/05/1989 | US4864433 Magnetic recording and reproducing device |
| 09/05/1989 | US4864426 Circuit for detecting signal loss, or drop-out, in a digital signal processing system with A/D conversion |
| 09/05/1989 | US4864113 Information memory system for reading information from a moving recording medium |
| 08/29/1989 | US4862443 Sync signal detection apparatus for accurately synchronizing reproduced data |
| 08/29/1989 | US4862439 Recording device that identifies recordable areas of a disk record |
| 08/29/1989 | US4862299 Clock signal regenerator |
| 08/29/1989 | US4862297 Apparatus for reproducing a digital signal without employing tracking signals |
| 08/29/1989 | US4862296 PCM signal reproducing apparatus with adjustable phase lock loop circuitry |
| 08/29/1989 | US4862295 Method of formatting a storage medium and drive unit for controlling the reading and writing of data on the formatted storage medium |
| 08/29/1989 | US4862292 Digital information signal recording apparatus |
| 08/29/1989 | US4862290 Power feeding and input signal switching control system for video tape recorder combined with television receiver and camera in a body |
| 08/29/1989 | US4862170 Digital-analog converter |
| 08/29/1989 | US4862118 Signal processing system using a compressor and an expander |
| 08/29/1989 | CA1258903A1 Apparatus for recording and/or reproducing an additional information signal |
| 08/24/1989 | WO1989007825A1 Device for correcting burst error |
| 08/24/1989 | WO1989007824A1 Synchronous, multiple channel analogue and audio-visual record and playback unit |
| 08/23/1989 | EP0329412A2 Reading and decoding recorded data at varying speeds using a magneto-resistive sensor |
| 08/23/1989 | EP0329265A2 Data storage method |
| 08/22/1989 | US4860317 Noise-reduction signal processing arrangement |
| 08/22/1989 | US4860272 Erroneous track jump restoration apparatus for optical record disc player |
| 08/22/1989 | US4860129 Signal reproducing device |
| 08/22/1989 | US4860121 Detector circuit for detecting drop-out in reproduced digital data |
| 08/17/1989 | DE3902958A1 Process for the interleaved recording of data for a plurality of data channels |
| 08/16/1989 | EP0328240A2 Managing data storage space on large capacity record media |
| 08/16/1989 | EP0328141A1 Recording and reproducing apparatus |
| 08/16/1989 | EP0327751A2 Disk Player |
| 08/15/1989 | US4858235 Information storage apparatus |
| 08/15/1989 | US4858217 Optical disk recording and reproducing device |
| 08/15/1989 | US4858037 Information signal recording and/or reproducing apparatus |
| 08/15/1989 | US4858036 Software protection and identification system |
| 08/15/1989 | US4858035 Digital signal reproducing system |
| 08/15/1989 | US4858034 Modular unitary disk file subsystem with differing density zones |
| 08/15/1989 | US4858032 Device for extracting still picture frames from a moving image video signal and recording same on a magnetic recording medium |
| 08/15/1989 | US4858024 Apparatus for reproducing frequency-division multiplexed video FM and digital audio signals |
| 08/15/1989 | US4857866 Phase-locked loop having elongated time for charge and discharge |
| 08/15/1989 | CA1258525A1 Reproduction of magnetic recordings |
| 08/10/1989 | WO1989007317A1 Public video recording system |
| 08/10/1989 | WO1989007314A1 Correction of long term drift and short term fluctuating corruption of a signal |
| 08/09/1989 | EP0327201A2 Data recorders and methods of recording digital data |
| 08/09/1989 | EP0327188A2 Method of storing data on recording tape |
| 08/09/1989 | EP0326576A1 Optical recording method for data cards |
| 08/08/1989 | US4855981 Method and device for reading out optically recorded data and compensating for a drastic change in the position of a line to be read |
| 08/08/1989 | US4855847 Video disk reproducing device having improved motor speed control |
| 08/08/1989 | US4855844 Method of prerecording tape and apparatus for use therewith |
| 08/08/1989 | US4855730 Component audio/video system with timed control of plural peripheral devices |
| 08/02/1989 | EP0326437A2 Optical disk recording and reproducing device |
| 08/02/1989 | EP0326206A1 Method of and apparatus for recording an information signal |
| 08/02/1989 | EP0325823A1 Data storage system |
| 08/02/1989 | EP0325772A2 Method of recording and reproducing audio information in relation to graphics information |
| 08/02/1989 | EP0179299B1 Alignment disk and method for producing it |
| 08/02/1989 | CN1034445A Method of and apparatus for suecessively recording efm-modulated signals |
| 08/01/1989 | US4853921 Method for storing data in rotary type recording media |
| 08/01/1989 | US4853920 Information recording medium and reproducing method therefor |
| 08/01/1989 | US4853915 Optical recording/reproducing method and apparatus for optical disk medium having unique control parameters |
| 08/01/1989 | US4853914 Time base correction system with coarse and fine correction |
| 08/01/1989 | US4853802 Single stage feedforward equalizer |
| 08/01/1989 | US4853801 Device for regenerating a binary digital signal, for example a bi-phase encoded signal |
| 08/01/1989 | US4853798 Method and apparatus for reproducing digital or analog signals |
| 08/01/1989 | US4853797 Fir type digital filter for recording and reproducing apparatus |
| 08/01/1989 | US4853796 Recording/reproducing apparatus for digital composite video signal with means for synchronizing color subcarrier phase |
| 08/01/1989 | CA1258134A1 Error correction method |
| 07/27/1989 | DE3801332A1 Use of a data transmission method |
| 07/26/1989 | EP0325491A1 Automatic gain control device for use in an optical memory device |
| 07/26/1989 | EP0325488A1 Analog signal switching device for use in an optical memory device |
| 07/26/1989 | EP0325477A2 Methods of recording and/or reproducing digital signals |
| 07/26/1989 | EP0325329A1 Method of and apparatus for successively recording EFM-modulated signals |