Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
05/1993
05/04/1993US5208678 Audio and video data synchronization apparatus for recording and reproducing system
05/04/1993CA1317370C Method and apparatus using multiple codes to increase storage capacity
04/1993
04/29/1993WO1993008568A1 Storage arrangement for magnetic tape cassettes
04/29/1993WO1993008561A1 Hybrid sector servo system
04/29/1993DE4135419A1 Speichereinrichtung fuer eine magnetbandkassette Storage means for a magnetic tape cassette
04/28/1993EP0539276A1 Method for detecting digital data
04/28/1993EP0539008A2 Recording and reproducing system for high definition color video signal
04/28/1993EP0538919A1 Magnetic tape recording apparatus
04/28/1993EP0538867A2 Decision-directed digital phase locked loop
04/27/1993US5206939 System and method for disk mapping and data retrieval
04/27/1993US5206931 Picture file system
04/27/1993US5206853 Apparatus and method for detecting intersymbol interference
04/27/1993US5206851 Cross interleaving circuit
04/27/1993US5206847 Information recording disk, and information recording/reproducing method and apparatus utilizing the same
04/27/1993US5206769 Method for controlling a plurality of phase-lock loops from a common frequency control
04/27/1993US5206740 Video disk player capable of providing normal image reproduction of an external video signal as well as a video signal stored on a disk
04/27/1993US5206726 Time base corrector for eliminating time base fluctuations in a composite video signal
04/27/1993US5206646 Digital modulating method
04/27/1993CA1317029C Method and apparatus for processing information data
04/27/1993CA1317025C Digital signal recording apparatus
04/23/1993WO1992010037A1 Digital data converter
04/23/1993CA2096352A1 Digital data converter
04/22/1993DE4229654A1 Audio and video signal transmission with error correction - protects data groups with bit quantity fluctuating between frames by sorting data bits w.r.t. their importance and distributing bit groups homogeneously within frame
04/21/1993EP0537407A1 Flexible encoding method and architecture for high-speed data transmission and storage
04/21/1993EP0537361A1 High efficiency digital data encoding and decoding apparatus.
04/20/1993US5204848 Adjusting amplitude detection threshold by feeding back timing-data phase errors
04/20/1993US5204793 Removable cartridge disk drive with an integral head loading ramp, air filter and removable cartridge door safety stop
04/20/1993US5204790 Digital signal recording circuit for digital video cassette tape recorder
04/20/1993US5204708 Method and apparatus for magnetically communicating via a photographic filmstrip with enhanced reliability
04/20/1993US5204677 Quantizing error reducer for audio signal
04/20/1993CA1316600C Optical recording medium recording and reproducing device
04/20/1993CA1316592C Method and apparatus for substituting a higher quality soundtrack for a lesser quality audio soundtrack during reproduction of the lesser quality audio soundtrack and a corresponding visual picture
04/15/1993WO1993007614A1 Data reproducing apparatus
04/14/1993EP0536816A1 Data modulation and demodulation system for magnetic recording system
04/14/1993EP0536764A1 Disc-shaped recording medium
04/13/1993US5202979 Storage system using multiple independently mechanically-driven storage units
04/13/1993US5202890 Block error detector
04/13/1993US5202878 Optical recording and reproducing method and apparatus for the same
04/13/1993US5202877 Apparatus for detecting unused sector on record medium
04/13/1993US5202876 Optical disc recording-reproducing apparatus in which sector substitution of defective sectors is performed
04/13/1993US5202866 Digital audio disk player
04/13/1993US5202799 Logical data tracks extending among a plurality of zones of physical tracks of one or more disk devices
04/13/1993CA1316259C Sound reproducing apparatus continuously deriving reproduced sound signal at recording time while driving sound reproducing media in special reproduction mode
04/07/1993EP0536040A1 Method for recording a new coded message, instead of a previous coded one recorded on a magnetic strip on a support document, by manual displacement of said document and system for carrying out this method
04/07/1993EP0535920A2 Data processing
04/07/1993EP0535832A1 Disc recording/reproducing apparatus and disc
04/07/1993EP0535737A2 Arrangement for reproducing a digital signal from a track on a magnetic record carrier using a read head with a MR element
04/07/1993EP0535703A2 Read only digital audio information recording medium and digital dubbing system therefor
04/07/1993EP0535560A2 Modulator circuit for regeneration of a digital recording medium
04/07/1993EP0535434A2 A circuit and method for communicating digital audio information
04/07/1993EP0535157A1 Method and apparatus for storing text data in subcode packs
04/06/1993US5200944 Disc playback apparatus for reproducing sequentially recorded digital data
04/06/1993US5200943 Method and apparatus for controlling encoding and recording of main information data in accordance with different detected data formats of the main information data
04/06/1993US5200864 Combining small records into a single record block for recording on a record media
04/06/1993US5200835 Demodulator for fm modulated video signals with pre-demodulation sideband suppression and post-demodulation sideband restoration
04/06/1993CA1315878C Method of and device for recording information, record carrier, and device for reading the recorded information
04/06/1993CA1315875C Pcm signal recording apparatus
04/06/1993CA1315874C Pcm data transmitting apparatus and method
04/01/1993WO1993006659A1 Phase locked loop having constant gain for recovering clock from non-uniformly spaced data
04/01/1993WO1993006593A1 An embedded servo system with reduced agc overhead
03/1993
03/31/1993EP0534883A1 Method and apparatus for synchronizing the readout of a sequential media device with a separate clocked device
03/31/1993EP0534766A2 Data write device
03/31/1993EP0534651A1 Signal processing system for adaptive equalization
03/31/1993EP0534490A1 Phase lock loop for sector servo system
03/31/1993EP0533789A1 Recorder for digital signals.
03/31/1993EP0533721A1 Television set.
03/31/1993EP0489819B1 Improved decoder circuit
03/31/1993CN1070504A Andio record carrier and players for playing said record carrier
03/30/1993US5199030 Digital signal transmission device
03/30/1993US5199019 Digital signal information reproduction apparatus enabling recording medium subsitution during reproduction of a prior recording medium
03/30/1993US5199018 System for inserting a synchronizing pattern in digital audio data on an optical disk
03/30/1993US5198813 Digital recording system with (8,16,2,5) run length limited (rll) code
03/27/1993CA2077809A1 Data write device
03/24/1993EP0533462A2 Reproducing and post-recording digital signals
03/24/1993EP0533249A2 Arrangement for obtaining recorded tape-like magnetic record carriers, record carrier obtained by means of the arrangement, and reproducing device for reproducing the record carrier
03/24/1993EP0533204A2 Information recording/reproducing apparatus for converting and processing data exceeding error correction ability at recording
03/24/1993EP0532702A1 Digital fm synthesizer for record circuitry.
03/24/1993EP0532514A1 Failure-tolerant mass storage system
03/23/1993US5197101 Data compression circuit of a digital audio tape recorder
03/23/1993US5196931 Highly efficient coding apparatus producing encoded high resolution signals reproducible by a vtr intended for use with standard resolution signals
03/23/1993US5196849 Method and apparatus for implementing PRML codes with maximum ones
03/23/1993US5196848 Code modulation system using modulated data code tables
03/23/1993CA1314977C Sector mis-synchronization detection method
03/23/1993CA1314976C Decoder
03/23/1993CA1314974C High speed tape duplicating machine
03/18/1993WO1993005510A1 Method for locating data in a data cartridge system
03/18/1993WO1993005507A1 Recovering audio signals from a variable-area optical record
03/18/1993CA2116034A1 Recovering audio signals from a variable-area optical record
03/17/1993EP0532356A2 Method of recording data and information regarding defects
03/17/1993EP0532323A2 Digital video signal recording apparatus
03/17/1993EP0532279A2 Method of recording information on video disk
03/17/1993EP0532278A2 Method of recording information on video disk
03/17/1993EP0532277A2 Method of recording information on video disk
03/17/1993EP0532276A2 Method of recording information on video disk
03/17/1993EP0532004A2 Method for manufacturing ROM type optical disk
03/17/1993EP0531453A1 Dual deck video cassette recorder with copy prevention.
03/17/1993EP0428528B1 Data security device
03/17/1993CN1020138C Method of and device for recording data signals on a record carrier of an-inscriballe type and device for reading such a record carrier
03/17/1993CN1020137C System for recording information signal, and record carrier and recording device
03/16/1993US5195141 Digital audio equalizer