| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 11/03/1987 | CA1228926A1 Code modulation system |
| 11/03/1987 | CA1228918A1 Method and device for reshaping a signal produced by reading data recorded on an optical disc |
| 10/29/1987 | DE3613473A1 Video recorder with improved sound reproduction |
| 10/28/1987 | EP0243075A2 Frequency multiplying circuit |
| 10/28/1987 | EP0243020A2 Method and apparatus for computer memory back-up with automatic tape positioning |
| 10/28/1987 | EP0242576A2 Restoring and clocking pulse width modulated data |
| 10/28/1987 | CN87103558A Recording and reproducing time coding signals with digital video frequency and sound signals |
| 10/28/1987 | CN87102794A Method of transmitting update information for a stationary video picture |
| 10/28/1987 | CN87102700A Method of and arrangement for restoring invalid samples of equidistantly sampled signal |
| 10/27/1987 | US4703485 Method and apparatus for computing and implementing error detection check bytes |
| 10/27/1987 | US4703369 Video format signal recording and reproducing method |
| 10/27/1987 | US4703367 Recording disk data playback apparatus |
| 10/22/1987 | WO1987006368A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data |
| 10/22/1987 | DE3712778A1 Fm-demodulator fuer geraete zur wiedergabe von videosignalen Fm demodulator for geraete for playback of video signals |
| 10/21/1987 | EP0242215A2 Apparatus for data recording disc playback |
| 10/21/1987 | EP0242166A2 Apparatus for transmitting digital signal |
| 10/21/1987 | EP0242121A2 Synchronising systems for digital apparatus |
| 10/21/1987 | EP0242093A1 Resynchronization of serial data blocks |
| 10/21/1987 | EP0242078A2 Optical information recording medium having tracking tracks and pre-format signals pre-recorded thereon |
| 10/21/1987 | EP0241980A1 Method of and arrangement for restoring samples of an equidistantly sampled signal which are considered invalid |
| 10/21/1987 | EP0241977A1 Method of and arrangement for restoring invalid samples of an equidistantly sampled signal |
| 10/21/1987 | EP0241974A1 Device for the regeneration of channel-clock information in data transmission and data-recovery arrangement comprising such a device. |
| 10/20/1987 | US4701872 Aperiodic waveform generation using stored markers identifying scaled waveform sections |
| 10/20/1987 | US4701814 Message location calibration method and system |
| 10/20/1987 | US4701812 PCM recording and reproducing apparatus |
| 10/20/1987 | CA1228421A1 Apparatus for reproducing information from a disc- shaped optically readable record carrier |
| 10/14/1987 | EP0241227A2 Method and apparatus for video signal recording and playback |
| 10/14/1987 | EP0241214A2 Video noise reduction circuits |
| 10/14/1987 | EP0241130A2 Apparatus for deskewing successively occurring blocks of data |
| 10/14/1987 | EP0241081A1 Compact disc drive apparatus specifically designed for storage of digital data and/or mixture of audio information and digital data |
| 10/14/1987 | EP0241014A2 Recording and reproducing a time code signal together with digital video and audio signals |
| 10/14/1987 | EP0240678A2 Rotational velocity control with pulse width modulation |
| 10/14/1987 | CN87100386A Optical disc duplicating unit and reproducing optical disc |
| 10/13/1987 | US4700241 Apparatus for recording and reproducing digital signals |
| 10/13/1987 | US4700240 Digital data playback system |
| 10/13/1987 | US4700084 Digital clock recovery circuit apparatus |
| 10/13/1987 | CA1228166A1 Method and apparatus for coding digital data to permit correction of one or two incorrect data packets (bytes) |
| 10/08/1987 | WO1987006086A1 Digital data block synchronizer |
| 10/07/1987 | EP0240363A2 Error correction methods |
| 10/07/1987 | EP0240231A2 Apparatus and method for digital magnetic recording and reading |
| 10/06/1987 | US4698842 Audio processing system for restoring bass frequencies |
| 10/06/1987 | US4698811 Method and apparatus for generating error correction codes for digitized picture signal recording/reproducing |
| 10/06/1987 | US4698810 Data recording and reproducing system with error correction capability using ECC and CRC codes |
| 10/06/1987 | US4698697 Method and system for recording video information with a phase control operation by which a phase value of a recording RF signal of each 1H period is desirably adjusted |
| 10/06/1987 | US4698696 Noise reduction circuit for video tape recording and playback apparatus |
| 10/06/1987 | US4698695 Recording disk data playback apparatus |
| 10/06/1987 | US4698693 Audio magnetic recording and/or reproducing apparatus utilizing frequency modulation |
| 10/06/1987 | CA1227871A1 Digital data converting method and apparatus there of |
| 09/30/1987 | EP0239326A2 Magnetic recording and reproducing system |
| 09/30/1987 | EP0238755A1 Video signal recording apparatus |
| 09/29/1987 | US4697212 Method and apparatus for recording a digital information signal |
| 09/29/1987 | US4697167 Sync pattern encoding system for data sectors written on a storage medium |
| 09/29/1987 | US4697098 Composite gate generator circuit for detecting valid data signals |
| 09/23/1987 | EP0238194A2 Methods of and apparatus for recording signals on a disc-shaped recording medium |
| 09/23/1987 | EP0238041A2 Phase locked loop circuit |
| 09/23/1987 | EP0237958A1 Device at the receiver side with an operation mode controlled from the transmitter side |
| 09/23/1987 | EP0237561A1 Audio and video digital recording and playback system |
| 09/23/1987 | EP0237535A1 Self-testing peripheral controller system for multiple disk drive modules. |
| 09/22/1987 | US4696008 Data storing device having position determining means |
| 09/22/1987 | US4695993 Optical information recording and reproducing apparatus and optical disc |
| 09/22/1987 | US4695991 Reading information stored in multiple frame format |
| 09/22/1987 | US4695904 Information signal recording disc recorded with an end signal for selectively preventing unwanted access to predetermined recorded information and disc reproducing apparatus therefor |
| 09/16/1987 | EP0237020A2 Method and apparatus for transmitting and/or receiving a digital signal |
| 09/16/1987 | EP0236631A1 Information reproducing apparatus |
| 09/16/1987 | EP0066590B1 Reading information stored in multiple frame format |
| 09/15/1987 | US4694468 Apparatus useful in channel equalization adjustment |
| 09/15/1987 | US4694456 Information signal reproducing apparatus |
| 09/15/1987 | US4694256 Compensation circuit for pulse signals |
| 09/09/1987 | EP0236048A1 Magnetic recording and reproducing system |
| 09/09/1987 | EP0236017A2 Synchronizing signal decoding |
| 09/09/1987 | EP0236009A2 Coding digital data |
| 09/09/1987 | EP0235782A2 Apparatus for reproducing a digital signal |
| 09/09/1987 | EP0235209A1 Apparatus for reproduction of sound and video |
| 09/09/1987 | CN86108596A Pgm recording reproducing method and device for voice signal |
| 09/08/1987 | US4692914 Reproducing device for frequency modulated signals |
| 09/08/1987 | US4692818 Dual audio track recording system in which one track also contains a control signal |
| 09/08/1987 | US4692816 Digital data transmitting system for transmitting digital data a number of times depending on an information content of the digital data |
| 09/08/1987 | US4692708 Time base correction circuit |
| 09/08/1987 | CA1226671A1 Optical recording medium |
| 09/02/1987 | EP0234957A2 Sync signal detection apparatus |
| 09/02/1987 | EP0234849A2 Method of encoding digital information on magnetic tape |
| 09/02/1987 | EP0234709A2 Optical disk duplicating apparatus and duplicated optical disk |
| 09/02/1987 | EP0234577A1 Decoding apparatus |
| 09/02/1987 | EP0234354A2 Apparatus for decoding a digital signal |
| 09/02/1987 | EP0234070A2 Apparatus for fixed-length binary encoding and decoding |
| 09/01/1987 | US4691254 Data processing system including encoder, decoder and write precompensator, using run length limited code |
| 09/01/1987 | US4691252 Rotary magnetic recording-reproducing apparatus |
| 09/01/1987 | US4691246 Apparatus for multiplex recording and reproduction of audio and video signals |
| 08/27/1987 | DE3705185A1 Diskette recording process |
| 08/27/1987 | DE3701763A1 Verfahren und anordnung zum einschreiben und lesen digital codierter information, beliebig geschuetzt durch einen fehlerkorrigierenden code oder nicht Method and arrangement for register and read digitally encoded information, any protected by an error-correcting code or not |
| 08/27/1987 | DE3605396A1 Transmission system with transmission code for binary data |
| 08/26/1987 | EP0233783A1 Apparatus for recording and/or reproducing data |
| 08/26/1987 | CN87100929A Method of and device for storing and reading digital information, at option protected or not by an error correcting code |
| 08/25/1987 | US4689778 Optical disc recording/reproducing apparatus with recorded track-section detector |
| 08/25/1987 | US4689697 Reproducing digital audio signals |
| 08/25/1987 | US4689501 Signal level detector for compact disc player |
| 08/25/1987 | CA1226067A1 Multi-function data signal processing method and apparatus |
| 08/19/1987 | EP0233096A1 Process for formatisation and deformatisation of data resulting from the coding of numerical information using a variable-length code, and arrangement for carrying out this process |
| 08/19/1987 | EP0233075A2 Method and apparatus for generating error detection check bytes for a data record |
| 08/18/1987 | US4688225 Method for uniformly encoding data occurring with different word lengths |