Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
03/1992
03/04/1992EP0179923B1 System for correcting error in digital data
03/04/1992EP0166785B1 Disk reproducing apparatus
03/04/1992CN1059249A Digital fm synthesizer for record circuitry
03/04/1992CN1059224A Disc recording and/or reproducing apparatus
03/04/1992CN1059223A Disc-shapeo recording medium and recording reproducing apparatus therefor
03/03/1992US5093819 System having optical disk and disk drive unit
03/03/1992US5093751 Carry noise measuring system for magnetic recording medium
03/03/1992US5093750 System for recording/reproducing video data on or from a tape medium for storing digital signals and method therein
03/01/1992CA2050099A1 Checksum calculation unit and method for error detection on data packets
02/1992
02/26/1992EP0472485A2 Data file directories and methods
02/26/1992EP0472484A2 Structured data storage method and medium
02/26/1992EP0472415A2 Error correction encoding apparatus
02/26/1992EP0472414A1 Disc-shaped recording media
02/26/1992EP0472397A1 Apparatus and method of reproducing synchronization signal in disc storage system
02/26/1992EP0472375A2 Data conversion method, pilot signal formation method using the same and rotary magnetic head device using the same
02/26/1992EP0472343A1 Disc recording and reproducing apparatus
02/26/1992EP0472263A2 Recording medium playback apparatus
02/26/1992EP0471672A1 Tape storage device.
02/26/1992CN1059042A Operational method and apparatus over gf(2m) using subfield gf(2m/2)
02/25/1992US5091806 Rotating magnetic recording medium recording/playback apparatus
02/25/1992US5091805 Apparatus and method for recording and/or reproducing a digital signal
02/25/1992US5091705 Fm modulator
02/25/1992US5091635 Optical record medium including a data region, an identification region and a control data region, and a method of recording signals on the optical record medium
02/25/1992CA1296424C High density storage of information on a compact disc
02/20/1992WO1992002928A1 Precompensation and read equalization
02/19/1992EP0471406A2 Circuit arrangement for reproducing
02/19/1992EP0471130A1 Coding method and apparatus for pipelined and parallel processing
02/18/1992US5089917 Digital signal recovery apparatus with minimized high frequency noise
02/18/1992US5089899 Recording medium playing apparatus which permits changes in the display position of a reproduced image
02/18/1992US5089821 Digital data reproducing circuit for a magnetic recording apparatus of reproducing digital data without being affected by capable external noise, drop-ins, and drop-outs
02/18/1992CA1296103C High-speed, high capacity, fault-tolerant, error-correcting storage system
02/12/1992EP0470792A1 Method of digital signal recording
02/12/1992EP0470772A2 Digital video signal reproducing apparatus
02/12/1992EP0470163A1 Improved security for machine-writeable data storage systems
02/11/1992US5088081 Method and apparatus for improved disk access
02/11/1992US5088080 Apparatus for deriving synchronizing signal from pre-formed marks on record carrier
02/11/1992US5087992 Method for assigning tracks on a magnetic data storage disk to different read/write frequency zones
02/11/1992CA1295733C Signal recording and/or reproducing apparatus
02/06/1992WO1992002016A1 Digital data tape reading device
02/06/1992WO1992001988A1 High-speed, high-capacity, fault-tolerant, error-correcting storage system for binary computers
02/06/1992WO1991020124A3 Digital fm synthesizer for record circuitry
02/05/1992EP0469931A1 Magnetic recording and reproduction apparatus for data processing unit and magnetic tape for use in such apparatus
02/05/1992EP0469924A2 Method for balancing the frequency of DASD array accesses when operating in degraded mode
02/05/1992EP0469727A1 Optical disc record/playback apparatus
02/05/1992EP0469553A1 Disk controller including format control unit instructing directly jump back operation
02/05/1992EP0469486A2 Apparatus for reproducing information from optical disk on which information is recorded by mark length recording
02/05/1992EP0469131A1 A high speed encoder for non-systematic codes
02/05/1992EP0468988A1 Pll circuit for generating a beat signal in a recorder
02/04/1992US5086421 Disk playing apparatus having a compensation characteristic variable with velocity information
02/04/1992CA1295419C Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
02/02/1992EP0500711A1 Error correction method and apparatus
01/1992
01/29/1992EP0468656A1 Digital signal modulator
01/29/1992EP0468646A2 Reproducing apparatus for temporarily writing reproduced data into memory
01/29/1992EP0468472A1 Recording/reproducing circuit for disk apparatus
01/29/1992EP0468346A2 Circuit for reproducing digital data
01/29/1992EP0468112A1 Digital data tape reading device
01/28/1992US5084858 Reproducing apparatus having an arithmetic circuit to linearly combine an inverse matrix of crosstalk ratios relative to the adjacent tracks and signals read from the adjacent and traced tracks
01/28/1992US5084852 System for recording digital information in a pulse-length modulation format
01/28/1992US5084790 Recording control apparatus
01/28/1992US5084789 "Parallel transfer type disk system"
01/28/1992US5084788 Pcm signal reproducing/recording apparatus
01/28/1992US5084787 Method and apparatus for data decoding and processing
01/28/1992US5084786 Magnetic tape memory apparatus with axially displaced heads enabling after recording and verification
01/28/1992US5084767 Television signal recording and reproducing system using optical recording medium
01/28/1992CA1295047C Digital video tape recorders
01/23/1992DE4123873A1 Magnetic disc drive mechanism with cache memory - contg. separate regions for input and output data for reduced access times and increased throughput
01/22/1992EP0467674A2 Method of and apparatus for converting and/or detecting data
01/22/1992EP0467615A2 Magnetic storage system and method of operation
01/22/1992EP0467272A2 Video and audio signal recording/reproducing apparatus
01/21/1992US5083310 Compression and expansion technique for digital audio data
01/21/1992US5083303 Sector mark detecting apparatus in optical disc apparatus
01/21/1992US5083264 Process and apparatus for saving and restoring critical files on the disk memory of an electrostatographic reproduction machine
01/21/1992US5083224 Apparatus for recording an audio signal with protection against re-recording thereof, and recording apparatus which indicates the presence of such protection
01/21/1992US5083212 Apparatus and method for recording a color television signal on an optical disc
01/21/1992US5083197 Apparatus for restoring the correct phase relation of the chroma and luminance signals passed through separate paths
01/15/1992EP0466442A2 Non-linear preemphasis-deemphasis circuits
01/15/1992EP0466399A2 Apparatus for reproducing information
01/15/1992EP0466398A2 Information storage medium and apparatus for reproducing information therefrom
01/15/1992EP0466329A2 Apparatus for detecting digital data signals in a analog readback signal
01/15/1992EP0466296A2 A data recovery channel in a fault tolerant disk drive array and a method of correcting errors therein
01/15/1992EP0466190A2 Quantizing error reducer for audio signal
01/15/1992EP0466162A1 Image recording apparatus
01/15/1992EP0465630A1 Data dictionary sharing
01/15/1992CN1057921A Disc recording/ reproducing apparatus
01/14/1992US5081548 Data storage apparatus and method
01/14/1992US5081547 Apparatus and method for automatic adjustment of read amplitude threshold in a digital tape drive
01/14/1992US5081369 Signal processing circuit with digital delay
01/14/1992US5080479 Automatic implanting of identification data in any recorded medium
01/14/1992CA1294334C Digital data separator
01/09/1992WO1992000647A1 Method and apparatus for storing text data in subcode packs
01/09/1992WO1992000589A1 Read/write control for disk drive
01/08/1992EP0465428A2 Digital modulated signal demodulator/decoder apparatus
01/08/1992EP0465247A2 Information storage medium and apparatus for reproducing information therefrom
01/08/1992EP0465246A2 Information storage medium and apparatus for reproducing information therefrom
01/08/1992EP0465159A2 Data recording apparatus
01/08/1992EP0465103A2 Video tape recording and/or reproducing apparatus
01/08/1992EP0465053A2 Disc recording/reproducing apparatus
01/08/1992EP0464871A2 Optical information recording/reproducing apparatus
01/08/1992EP0464811A2 Information recording medium and information recording and reproducing apparatus
01/08/1992EP0464698A1 Method of recording digital signals