| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 01/17/1990 | EP0350920A2 A method of managing defective sectors in a disk-shaped information recording medium and an apparatus for performing the same |
| 01/17/1990 | EP0350731A2 Method for determining the skew error on a magnetic tape |
| 01/16/1990 | US4894734 Method and apparatus for constant density recording |
| 01/16/1990 | US4894732 Programmed reproduction system for still picture recording/reproduction device |
| 01/11/1990 | WO1990000280A1 Disk drive memory |
| 01/11/1990 | DE3914239A1 Einrichtung zum schutz von daten Means for protection of data |
| 01/10/1990 | EP0350368A1 Data coding and shaping device for a rotating-head recorder |
| 01/10/1990 | EP0349687A2 Method and apparatus for encoding magnetic disk sector addresses |
| 01/10/1990 | EP0349664A1 Digital method and system for reproducing analog data |
| 01/09/1990 | US4893312 Compact, real time tape drive system |
| 01/09/1990 | US4893199 Digital signal recording apparatus with a digital subdata converting capability |
| 01/09/1990 | US4893197 Pause compression and reconstitution for recording/playback apparatus |
| 01/09/1990 | US4893193 Disc recording medium and apparatus for playback thereof |
| 01/03/1990 | EP0349360A1 Process for magnetically characterizing the registration layer of a magnetic information support |
| 01/03/1990 | EP0349325A2 Digital signal transmission apparatus |
| 01/03/1990 | EP0348955A2 Optical disk recording and reading system with management data access mechanism |
| 01/03/1990 | EP0348570A1 A recording of an information signal |
| 01/03/1990 | EP0348486A1 Stored data error correction system |
| 01/03/1990 | CN1038536A Method for transmitting digital data |
| 01/03/1990 | CN1006337B Error correction apparatus for digital data |
| 01/03/1990 | CN1006335B Signal recording device |
| 01/02/1990 | US4891824 Muting control circuit |
| 01/02/1990 | US4891784 High capacity tape drive transparently writes and reads large packets of blocked data between interblock gaps |
| 01/02/1990 | US4891719 Fast closure method for a data signal channel |
| 01/02/1990 | US4891718 Magnetic recording |
| 12/28/1989 | WO1989012891A1 Three-part decoder circuit |
| 12/28/1989 | WO1989012890A1 Process and device for the numeric recording of data, a protected data recording substrate and a device for reading data recorded on such a substrate |
| 12/28/1989 | DE3920335A1 Process and apparatus for recording and reproducing data onto and from a magnetic tape by means of a rotating head |
| 12/27/1989 | EP0348218A2 Dual deck video recording apparatus and method |
| 12/27/1989 | EP0348132A2 Methods of and apparatus for data transmission |
| 12/27/1989 | EP0347934A2 Data recording and/or reproducing method and data recording medium |
| 12/26/1989 | US4890299 Fast timing acquisition for partial-response signalling |
| 12/26/1989 | US4890275 Reading circuit in an optical disk apparatus |
| 12/26/1989 | US4890170 Waveform equalization circuit for a magnetic reproducing device |
| 12/20/1989 | EP0347032A2 Record format emulation |
| 12/20/1989 | EP0346979A2 Reproducing and/or recording apparatus |
| 12/20/1989 | EP0346973A1 Apparatus for recording and/or reproducing an electric signal on/from a magnetic record carrier |
| 12/20/1989 | EP0346774A1 Three-part decoder circuit |
| 12/19/1989 | US4888779 Matched spectral null trellis codes for partial response channels |
| 12/19/1989 | US4888775 Trellis codes for partial response channels |
| 12/19/1989 | US4888750 Method and system for erase before write magneto-optic recording |
| 12/19/1989 | US4888649 Noncopiably recorded videotape and noncopiably videotape-recording system |
| 12/14/1989 | WO1989012296A1 Recordable optical disc |
| 12/14/1989 | WO1989012293A1 Real time digital data transmission speed conversion system |
| 12/14/1989 | DE3918454A1 Verfahren zum aufzeichnen von digitalen signalen und digitales videobandaufnahmegeraet hierfuer A method for recording digital signals and digital videobandaufnahmegeraet here for |
| 12/13/1989 | EP0345986A2 Improved data demodulation system |
| 12/13/1989 | CN1006104B Data-storage disc and playback system therefor |
| 12/13/1989 | CN1006097B Magnetic disc reproducing apparatus |
| 12/07/1989 | DE3917576A1 Magnetic recording/replaying device |
| 12/06/1989 | EP0345037A2 A digital signal recording apparatus |
| 12/06/1989 | EP0344994A2 Optical disc drives |
| 12/06/1989 | EP0344903A2 Traversed (d, k) code translation |
| 12/06/1989 | EP0344856A1 Video signal processing circuit |
| 12/06/1989 | EP0344669A2 Digital data reproducing circuit for a magnetic recording apparatus |
| 12/06/1989 | EP0344368A1 Improvements in or relating to delay circuits |
| 12/06/1989 | CN1006033B Error detection circuit |
| 12/05/1989 | US4885792 Audio mixer architecture using virtual gain control and switching |
| 12/05/1989 | US4885750 Method and apparatus for error correction |
| 12/05/1989 | US4885735 Information recording and reproducing apparatus with management of defective sector |
| 12/05/1989 | US4885683 Self-testing peripheral-controller system |
| 12/05/1989 | US4885647 Apparatus for reproducing a digital signal |
| 12/05/1989 | US4885646 Digital recorder using partial response method |
| 12/05/1989 | US4885645 Write compensator for magnetic disk apparatus |
| 12/05/1989 | US4885644 Spindle servo device for data recording disk reproducing apparatus |
| 12/05/1989 | US4885458 Card-form recording medium and data recording device therefor |
| 12/05/1989 | CA1263746A1 Apparatus for recording and/or reproducing digital signal |
| 11/30/1989 | DE3816832A1 Process of the transmission of information stored in a CD(V) auxiliary channel |
| 11/29/1989 | EP0343930A2 Data signal processing apparatus |
| 11/29/1989 | EP0343929A2 Digital signal decoding apparatus |
| 11/29/1989 | EP0343670A2 Data demodulation apparatus |
| 11/28/1989 | US4884274 Detection of non-zero errors in the prefix and completion frames of high density magnetic tapes and apparatus therefor |
| 11/28/1989 | US4884150 Information reproducer |
| 11/28/1989 | CA1263476A1 Error control of sector address and optical disc |
| 11/28/1989 | CA1263474A1 Digital level detecting circuit |
| 11/28/1989 | CA1263454A1 Phase discriminator and data standardizer |
| 11/23/1989 | EP0342833A2 nigital data recording and/or reproduction apparatus and recording media |
| 11/23/1989 | EP0342803A2 Method and apparatus for recording and reproducing picture information, and recording medium |
| 11/23/1989 | EP0342748A1 Recording system as well as record carrier and recording apparatus for use in the system |
| 11/23/1989 | EP0342736A1 Phase-locked-loop cicuit and bit-detection arrangement comprising such a phase-locked-loop circuit |
| 11/23/1989 | EP0342624A2 Magneto-optical data recording system |
| 11/21/1989 | US4882732 Method and apparatus for recording and/or reproducing digital data |
| 11/21/1989 | US4882721 Offset for protection against amorphous pips |
| 11/21/1989 | US4882718 Single-head, direct overwrite magneto-optic system and method |
| 11/21/1989 | US4882640 Recording and reproducing apparatus using recorded numeral information signals for program detection |
| 11/21/1989 | US4882639 Changeover writing circuit for magnetic disk apparatus operable at plural densities |
| 11/21/1989 | US4882638 PCM recording and reproducing apparatus having common data frame construction for signal sources of varying quantization bit number |
| 11/21/1989 | US4882583 Modified sliding block code for limiting error propagation |
| 11/21/1989 | US4882546 Demodulation clock generator circuit |
| 11/21/1989 | CA1263194A1 Storage system using multiple mechanically-driven storage units |
| 11/16/1989 | DE3815079A1 Arrangement for dynamic expansion |
| 11/15/1989 | EP0341863A2 Sector mis-synchronization detection method |
| 11/15/1989 | EP0341852A2 High efficiency disk format and synchronization system |
| 11/15/1989 | EP0341834A2 Phase locked loop with bandwidth ramp |
| 11/15/1989 | EP0341790A2 Method and apparatus for reproducing magnetic tape using rotary drum heads |
| 11/14/1989 | US4881192 One-dimensional linear picture transformer |
| 11/14/1989 | US4881169 Apparatus for controlling peripheral equipment |
| 11/14/1989 | US4881136 Method and apparatus for detecting minute defects on magnetic disk by monitoring both amplitude decrease and phase shift of a reproduced signal |
| 11/14/1989 | US4881076 Encoding for pit-per-transition optical data recording |
| 11/07/1989 | US4879751 Audio production console |
| 11/07/1989 | US4879731 Apparatus and method for sync detection in digital data |