Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
01/1993
01/26/1993US5182678 PCM signal reproducing/recording apparatus
01/26/1993US5182520 Non-linear de-emphasis circuit
01/26/1993CA1313268C Data demodulation system
01/26/1993CA1313265C Recording format for an optical recording medium
01/26/1993CA1313257C Circuit for identifying when a reproduced color video signal has been recorded in a high-band or low-band mode
01/26/1993CA1313256C Circuit for detecting a video mode
01/21/1993WO1993001593A1 Audio record carrier and players for playing said record carrier
01/21/1993WO1993001591A1 Method and apparatus for digital storage and retrieval of data
01/21/1993WO1993001548A1 Modified viterbi detector with run-length code constraint
01/21/1993WO1992021224A3 Optical disk drive assembly having selectable compression and emulation
01/21/1993WO1992018210A3 Sporting device steerable by weight displacement and a steerable wheel assembly for use therein
01/21/1993DE4223155A1 Tonmontagevorrichtung fuer einen 8mm-videokassettenrecorder Sound editing apparatus for an 8mm video cassette recorder
01/21/1993DE4123759A1 Identification of non-visible faults on test CD disc surface - feeding optical signal output to detector circuit to identify changes in code to locate fault
01/20/1993EP0523985A2 Disc recording apparatus
01/20/1993EP0523952A2 Optical information recording and reproducing apparatus and recording medium
01/20/1993EP0523708A2 Method and apparatus for recording digital video signals
01/20/1993EP0523703A2 Magnetic recording apparatus
01/20/1993EP0523348A1 System for recording data on a storage medium
01/20/1993EP0140957B1 Audio digital recording and playback system
01/19/1993US5181196 Erase mark detecting circuit for detecting an erase mark superimposed on data recorded on a sector of an optical recording medium
01/19/1993US5181147 Rotary head assembly for substantially concurrent recording and monitoring of data on a magnetic tape cassette or the like
01/14/1993DE4214855A1 Audioschreibsteuerung Audio write control
01/13/1993EP0522869A2 Digital signal processing apparatus for signals having different data configurations
01/13/1993EP0522867A2 Magnetic reproduction apparatus
01/13/1993EP0522853A2 Digital data reproducing apparatus and method
01/13/1993EP0522750A2 A multiple track data storage disk, a method of formatting and a data recording disk file
01/13/1993EP0522734A1 Circuit and method of signal differentiation
01/13/1993EP0521924A1 Methods and apparatus for assigning signatures to members of a set of mass storage devices
01/13/1993EP0287593B1 Substituting soundtrack
01/12/1993US5179684 Method of changing the track and recording data
01/12/1993US5179476 Signal processor
01/12/1993US5179453 Recording medium playback apparatus including a variable compensation circuit
01/12/1993US5179452 Method for producing copy protected recorded videotape having uncopyable vertical synchronizing signal partition
01/12/1993US5179451 Method and device for signal reproduction used in a digital signal reproduction apparatus
01/12/1993US5179450 Video signal processing apparatus and method for the time base compensation
01/07/1993WO1993000681A1 Opto-magnetic data recording system
01/07/1993EP0521744A2 Maximum likelihood decoder
01/07/1993EP0521646A1 Method and apparatus for synchronising a data stream with clock signals used for reading the data stream
01/07/1993EP0521487A1 Information recording medium and reproducing device therefor
01/07/1993EP0521454A2 Optical information recording/reproducing apparatus
01/07/1993EP0521236A2 Method and apparatus for identifying signal format for use in disk player
01/07/1993EP0521215A1 Disk drive read circuit with programmable differentiator delay
01/07/1993DE4220694A1 Optical disc for information recording - is divided into two areas of memory with one area having CAV mode and other CLV mode of recording
01/07/1993CA2090416A1 Data recording system of magneto-optic type
01/06/1993CN1067761A Type of error signalling for optical information media
01/05/1993US5177729 Method and apparatus for reading information on information recording medium having track structure
01/05/1993US5177728 Disc player for playing different types of discs which automatically identifies the type of a currently loaded disc
01/05/1993US5177720 Optical disc recording system
01/05/1993US5177651 Magnetic media and servo synchronization method
01/05/1993US5177618 Dual deck vcr and duplicating circuit therefor
01/05/1993US5177482 Rll encoder and decoder with pipelined plural byte processing
12/1992
12/30/1992EP0520789A2 Video coder and coding method
12/30/1992EP0520734A2 Read error compensations in data storage systems
12/30/1992EP0520707A2 Data storage apparatus
12/30/1992EP0520444A2 Method and apparatus for recording compressed audio data on a video record medium
12/30/1992EP0520381A2 Optical recording apparatus
12/30/1992EP0520068A1 Encoder/decoder for multidimensional sound fields.
12/30/1992EP0240363B1 Error correction methods
12/30/1992CN1019704B Apparatus for recording and/or reproducing digital data
12/29/1992US5175748 Waveform shaping circuit and receiver using same
12/29/1992US5175655 Method and apparatus for verifying a signal recorded in an encoded form on a medium
12/29/1992US5175654 Disk apparatus
12/29/1992US5175545 Data coding system in a magnetic recording apparatus
12/29/1992CA2072055A1 Digital video recorder operable in standard and long play modes
12/29/1992CA1312140C Fast speed reproduction system for digital disc
12/24/1992DE4216593A1 Car recording and playback system using CD player and magnetic disc - has abnormal conditions in reading disc identified and automatic process started to repeat process for recording data block onto tape
12/23/1992WO1992022898A1 Method for recording on disc
12/23/1992WO1992022865A1 Phantom duplex copy group apparatus for a disk drive array data storage subsystem
12/23/1992EP0519764A1 Embedded servo banded format for magnetic disks for use with a data processing system
12/23/1992EP0519684A2 Reading signals for optical storage media
12/23/1992EP0519670A2 Apparatus for maintaining fault tolerance in a disk drive array
12/23/1992EP0519669A2 Encoding and rebuilding data for a DASD array
12/23/1992EP0519446A2 Information reproduction apparatus
12/23/1992EP0518986A1 Data storage apparatus and method
12/23/1992EP0362315B1 Device for monitoring acoustic signal processing systems
12/22/1992US5173886 Composite optical disc having both a data read-only area and a data rewritable area, and a recording/reproducing system for use therewith
12/22/1992US5173815 Recording position compensation circuit for use in digital information recording-reproduction apparatus
12/22/1992US5173779 Camcorder with electronic still-photographing function
12/22/1992US5173694 Binary data encoding and decoding using a rate 2/5 (2,18,2) code
12/22/1992US5173664 Phase locked loop having constant gain for recovering clock from non-uniformly spaced data
12/22/1992CA1311841C Apparatus for recording a digital signal
12/16/1992EP0518782A2 Bit detecting method and apparatus
12/16/1992EP0517857A1 Disk array system
12/16/1992EP0254748B1 Device for detecting defect of disc-like recording media
12/15/1992US5172381 Enhanced data formats and machine operations for enabling error correction
12/15/1992US5172380 Digital signal transmission apparatus
12/15/1992US5172359 System for recording digital data
12/15/1992US5172357 Phase-synchronous controller for production of reference clock signal in optical disk drive system
12/15/1992US5172242 Visual presentation system employing two or more video disk players for providing as many correlated images
12/15/1992US5172241 Recording/playback system for VCR
12/15/1992CA1311558C Information recording-reproducing method and apparatus
12/10/1992WO1992022137A1 Low computational-complexity digital filter bank
12/10/1992WO1992022064A1 Signalization of types of defects of an optical information carrier
12/10/1992WO1992022060A1 Improved signal encode/decode system
12/10/1992WO1992021224A2 Optical disk drive assembly having selectable compression and emulation
12/09/1992EP0517490A2 Multiple data surface optical medium and data storage system
12/09/1992EP0517483A2 Fault tolerant RLL data sector address mark decoder
12/09/1992EP0517478A2 Servo data recovery circuit for disk drive having digital embedded sector servo
12/09/1992EP0517473A2 Miniature disk drive having embedded sector servo with split data fields and automatic on-the-fly data block sequencing
12/09/1992EP0517230A2 Disc-shaped recording medium and apparatus for reproducing track addresses recorded on the disc-shaped recording medium