| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 03/24/1987 | US4653051 Apparatus for detecting and correcting errors on product codes |
| 03/24/1987 | US4653034 Remote monitor unit |
| 03/24/1987 | US4652944 Computer memory back-up |
| 03/24/1987 | US4652942 Method and system for converting binary data using bit-divided encoding |
| 03/24/1987 | US4652778 I2 L delay circuit with phase comparator and temperature compensator for maintaining a constant delay time |
| 03/24/1987 | CA1219670A1 Apparatus for reproducing a color video signal |
| 03/17/1987 | US4651237 Programmed disk controller capable of operating with a variety of data encoding techniques |
| 03/17/1987 | US4651236 Waveform equalizing circuit |
| 03/17/1987 | US4651234 Installation for recording and recovering binary signals on a magnetic information carrier |
| 03/17/1987 | US4651231 Timing system for laser disc having digital information |
| 03/17/1987 | US4651230 Apparatus for detecting and compensating drop-outs in an audio and video signal |
| 03/17/1987 | US4651105 Digital peak detecting means for a pulse train of electrical signals having a frequency within a known frequency bandwidth |
| 03/17/1987 | US4651102 Method of converting a pulse train of electrical signals into digital signals |
| 03/17/1987 | US4650979 Method for the detection of authenticity in a data carrier and apparatus for applying said method |
| 03/12/1987 | WO1987001492A1 Apparatus for reproduction of sound and video |
| 03/11/1987 | EP0213961A2 Methods of and apparatus for recording and/or reproducing a digital signal |
| 03/11/1987 | EP0213937A2 Apparatus for recording an information signal |
| 03/11/1987 | EP0213731A1 Index signal detecting system |
| 03/11/1987 | EP0213274A2 Process and device for recording or reproducing video signals on or from a magnetic record carrier |
| 03/11/1987 | CN85106846A Time-base control method |
| 03/10/1987 | US4649542 Digital signal transmission method providing high error correction capability |
| 03/10/1987 | US4649265 Method for protection against the re-transfer of uniquely recorded information on a data carrier and apparatus for recording and/or reading re-transfer-protected information |
| 03/10/1987 | CA1219074A1 Processes and devices for reading magnetic access control cards or similar |
| 03/10/1987 | CA1219068A1 Method of encoding a recording signal, record carrier provided with a recording signal encoded in accordance with the method, apparatus for carrying out the method, and apparatus for reproducing a signal encoded in accordance with the method |
| 03/10/1987 | CA1219067A1 System for recording and/or detecting two marking signals |
| 03/04/1987 | EP0212099A2 Sector identification method for hard sectored hard files |
| 03/03/1987 | US4648118 Apparatus for reducing noise in audio signals |
| 03/03/1987 | US4648085 Optical information recording and reading apparatus with error correction |
| 03/03/1987 | US4647988 Magnetic write circuit |
| 03/03/1987 | US4647985 Method for recording and reading out a video format signal |
| 03/03/1987 | CA1218747A1 Data processing system in which unreliable words in the memory are replaced by an unreliability indicator |
| 02/25/1987 | EP0211757A1 Baseband modulation method for a data signal, modulation and demodulation device therefor |
| 02/25/1987 | EP0211339A2 Apparatus for recording and/or reproducing with a plurality of rotary heads |
| 02/25/1987 | CN85105955A Method and device for recording and replaying the digital signal with the fixed head |
| 02/24/1987 | US4646303 Data error detection and correction circuit |
| 02/24/1987 | US4646301 Decoding method and system for doubly-encoded Reed-Solomon codes |
| 02/24/1987 | US4646281 Read channel for an optical recorder |
| 02/24/1987 | US4646171 Apparatus for recording and/or reproducing digital information signal |
| 02/24/1987 | US4646170 Method and apparatus for recording and reproducing a digital signal with a stationary head |
| 02/24/1987 | US4646153 Noise reduction circuit for a video signal |
| 02/24/1987 | US4646103 Optical recording method |
| 02/17/1987 | US4644546 Method of digital signal transmission |
| 02/17/1987 | US4644545 Digital encoding and decoding apparatus |
| 02/17/1987 | US4644544 Apparatus for correcting errors |
| 02/17/1987 | US4644517 Audio signal amplifier for an electromagnetic phono cartridge |
| 02/17/1987 | US4644422 Anti-copy system |
| 02/17/1987 | US4644420 Circuit and methodology for reading and tracking binary data from magnetic tape independently of the data pattern on the tape |
| 02/17/1987 | US4644419 Floppy disk unit |
| 02/17/1987 | US4644418 Floppy disk control apparatus |
| 02/17/1987 | US4644417 Digital signal reproducing apparatus |
| 02/17/1987 | US4644412 Video signal recording and reproducing apparatus |
| 02/17/1987 | CA1218149A1 Thermo-magnetic recording of binary digital information |
| 02/17/1987 | CA1218146A1 Multiplex magnetic recording and reproduction system |
| 02/10/1987 | US4642812 Sound field enlarging device and method |
| 02/10/1987 | US4642808 Decoder for the decoding of code words which are blockwise protected against the occurrence of a plurality of symbol errors within a block by means of a reed-solomon code, and reading device for optically readable record carriers |
| 02/10/1987 | US4642703 Information recording-reproducing method and apparatus |
| 02/10/1987 | US4642562 Phase difference demodulator |
| 02/10/1987 | CA1217868A Apparatus for detecting and correcting errors in product codes for error correction in digital information data transmission or recording systems |
| 02/04/1987 | EP0210867A2 Video and audio signal recording and/or reproducing apparatus |
| 02/04/1987 | EP0210630A2 Method of formatting data storage disks |
| 02/04/1987 | EP0210529A2 Floppy disk drive interface circuit |
| 02/04/1987 | EP0210528A2 Optical recording medium and method for writing data thereinto |
| 02/03/1987 | US4641326 Counter circuit operable in synchronism with frame or digital data signal |
| 02/03/1987 | US4641310 Data processing system in which unreliable words in the memory are replaced by an unreliability indicator |
| 02/03/1987 | US4641309 Method and apparatus for selectively compensating burst errors of variable length in successive digital data words |
| 02/03/1987 | US4641295 Disc playback apparatus |
| 02/03/1987 | US4641294 Method and apparatus for performing a memory operation on a fixed length block of data on a memory disk |
| 02/03/1987 | US4641208 Recording/reproducing apparatus |
| 02/03/1987 | US4641207 Diagnostic device and method for examining the operation of a disk drive |
| 02/03/1987 | US4641206 Video signal recording and reproducing apparatus including a noise reduction circuit |
| 02/03/1987 | US4641204 Recording and reproducing system for recording both analogue and digital information on and from a disc |
| 02/03/1987 | US4641202 Skip field color recording apparatus |
| 02/03/1987 | US4641128 Method of encoding a stream of data bits, arrangement for performing the method and arrangement for decoding the stream of channel bits obtained in accordance with this method |
| 01/31/1987 | CN85102104A Apparatus for reproducing digital informatic via a transmission medium |
| 01/31/1987 | CN85101774A Error correcting method for optical data recording card |
| 01/29/1987 | DE3526914A1 Method for block transfer of digital data which is immune to line group errors |
| 01/28/1987 | EP0209853A2 Track jump servo system disc players |
| 01/27/1987 | US4639920 Data interpolating circuit using a two data word memory |
| 01/27/1987 | US4639795 Signal transmission circuit |
| 01/27/1987 | US4639794 Multiply pulsed magnetic recording |
| 01/27/1987 | US4639793 System for recording or detecting two marking signals on a record carrier |
| 01/27/1987 | US4639792 Apparatus for decoding video address code signals |
| 01/27/1987 | US4639687 Phase control circuit |
| 01/27/1987 | US4639660 Switching circuit for a power supply in a signal processing apparatus |
| 01/21/1987 | EP0209151A2 Apparatus for recording and/or reproducing an information signal |
| 01/21/1987 | EP0209141A2 PCM Signal recording and reproducing apparatus |
| 01/21/1987 | EP0209047A2 Apparatus for recording and/or reproducing an information signal |
| 01/21/1987 | EP0208931A1 PCM audio signal reproducing apparatus |
| 01/21/1987 | CN86105581A Index signal detecting system |
| 01/21/1987 | CN86104490A Method and apparatus for recording and redisplaying imformation |
| 01/21/1987 | CN86104002A Magnetic tape recording and/or reproducing apparatus wich recorded channel indicator |
| 01/20/1987 | US4638472 Information recording system and method for using alternative record area in writing and reading of data on optical disk |
| 01/20/1987 | US4638388 Method of making a linearity standard magnetic tape |
| 01/20/1987 | US4638380 Digital video tape recorder apparatus |
| 01/20/1987 | US4638374 Defect detecting apparatus for a rotary recording medium |
| 01/20/1987 | CA1216947A1 Encoding method for error correction |
| 01/20/1987 | CA1216935A1 Data recording/reproducing apparatus |
| 01/17/1987 | CN85101911A Video tape recorder |
| 01/15/1987 | DE3622238A1 Data writing/reading process |
| 01/14/1987 | EP0208556A2 Magnetic tape system with write retry means |