Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
12/1996
12/04/1996CN1137146A Information recording medium and information recording and reproducing method
12/03/1996US5581785 Starting system of disk storage device and data reading/writing system of the same
12/03/1996US5581743 CKD to fixed block mapping for optimum performance and space utilization
12/03/1996US5581728 Information storage system having advance reading function
12/03/1996US5581568 Data detection apparatus
12/03/1996US5581530 Digital recorder for processing of parallel data stored in multiple tracks and using cross-fade processing
12/03/1996US5581529 Combination of a recording arrangement and a source selection arrangement
12/03/1996US5581528 System for recording digital information in a pulse-length modulation format
12/03/1996US5581458 Bufered intelligent digital tape controller with onboard ECC and featuring global control variables
12/03/1996US5581420 Method and system for determining a radial positioning valve used for writing tracks at a desired track pitch
12/03/1996US5581418 Magnetic disk drive unit capable of determining data region position of data region that does not include position identification data
12/03/1996US5581363 Method and apparatus for recording and reproducing video signal
12/03/1996US5581361 Interleaving/deinterleaving apparatus for a digital video cassette recorder and the method thereof
12/03/1996US5581360 Methods and systems for dubbing a variable-length encoded digital video signal on a record medium
12/01/1996CA2177946A1 Data stream multiplexing apparatus and method, and record medium therefor
11/1996
11/28/1996WO1996037964A1 Sound decoding device
11/28/1996WO1996037891A1 Error check method of servo sector address, disk storage device and its controller
11/28/1996WO1996037882A1 Mr head read signal preconditioning circuitry
11/28/1996DE19619519A1 Sound-recording camera
11/28/1996CA2222178A1 Mr head read signal preconditioning circuitry
11/27/1996EP0744868A2 Method and apparatus for guaranteeing average case disk transfer bandwith and seek time for a video server
11/27/1996EP0744848A1 Synchronisation of Viterbi detector with feedback to sampling means
11/27/1996EP0744838A1 Data encoding method and data decoding method
11/27/1996EP0744741A2 Power saving decoder and data recovery apparatus utilizing the same decoder
11/27/1996EP0744070A1 Multitrack recording/reproducing arrangement
11/27/1996EP0619897B1 Method for improving partial stripe write performance in disk array subsystems
11/27/1996CN1136851A Rom-Ram-disk
11/27/1996CN1136696A Lengthy disc storaging system
11/27/1996CN1033407C Multimedium data storage device
11/26/1996US5579516 Method for storing data files on a multiple volume media set
11/26/1996US5579475 Method and means for encoding and rebuilding the data contents of up to two unavailable DASDS in a DASD array using simple non-recursive diagonal and row parity
11/26/1996US5579340 Waveform equalizer
11/26/1996US5579292 Magneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record data
11/26/1996US5579184 Playback clock signal generating circuit which uses a first and second phase lock loop
11/26/1996US5579183 Recording and reproducing an MPEG information signal on/from a record carrier
11/26/1996US5579182 Apparatus for recording digital signals superposed with controlled frequency components
11/26/1996US5579181 Apparatus for processing reproduced data including two multiplexers the first of which is responsive to reproduced field information
11/26/1996US5579120 Copyright protection for digital signal recording and/or reproduction and recording medium thereof
11/26/1996US5579003 Digital data modulation/demodulation system wherein the modulated data satisfies a minimum run number of zeros
11/20/1996EP0743793A2 A device for determining quantizing number in an image encoder
11/20/1996EP0743789A1 Recording device and reproducing device
11/20/1996EP0743765A1 Method and device for performing interpolation of digital signal, and device and method for recording and/or reproducing data on and/or from recording medium
11/20/1996EP0743642A2 Data recording/reproducing apparatus corresponding to a plurality of error correcting system and a data recording medium
11/20/1996EP0743641A2 Data recording/reproducing apparatus and method corresponding to a plurality of data formats, and data recording medium
11/20/1996EP0743640A2 Audio processing unit for mixing L channel and R channel of CD/CD-I audio signal
11/20/1996CN1136359A Optical disk and optical disk drive device
11/20/1996CN1136260A Method of and apparatus for reverse playback of time-division-multiplexed signal
11/20/1996CN1136235A Digital audio signal coding and/or decoding method
11/20/1996CN1136202A Recording medium and apparatus for protecting copyrighted digital data
11/20/1996CN1136201A Magnetic recording/displaying device and method for controlling inclined angle of rotary magnetic drum thereof
11/19/1996US5577224 Method and system for caching data
11/19/1996US5577015 System for recording digital information in a pulse-length modulation
11/19/1996US5577013 Optical information control device and synchronizing method thereof
11/19/1996US5577012 Data recording method, data recording apparatus, and data recording medium
11/19/1996US5577011 Method for preventing erroneous recording in compact disc player
11/19/1996US5576904 Timing gradient smoothing circuit in a synchronous read channel
11/19/1996US5576903 Method and apparatus for administering data on magnetic tape medium by way of a header segment
11/19/1996US5576902 Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data
11/19/1996US5576843 System and method for controlling play of multiple dialog audio tracks of a software carrier
11/19/1996US5576842 Data detection method and apparatus therefor for use in a digital recording/reproduction system
11/19/1996US5576840 Recording apparatus
11/19/1996US5576707 Method and apparatus for detecting and decoding data in a PRML class-IV digital communication channel
11/14/1996WO1996036163A2 Steganography systems
11/14/1996WO1996036130A1 Encoding data with variable block lengths
11/14/1996WO1996036122A1 M-ary (d,k) RUNLENGTH LIMITED CODING FOR MULTI-LEVEL DATA
11/14/1996WO1996035999A1 A system for manually altering the quality of a previously encoded video sequence
11/14/1996WO1996035998A1 Control of video encoding by varying quantization levels
11/14/1996WO1996035987A1 Video media security and tracking system
11/14/1996CA2218383A1 Video media security and tracking system
11/13/1996EP0742674A2 Video encoding method and system using a rate-quantizer model
11/13/1996EP0742554A2 Optical disc readout apparatus
11/13/1996EP0741900A1 Playback device and method of playing back a bit stream of a storage medium
11/13/1996EP0715758A4 Tape servo using azimuth servo blocks
11/13/1996EP0632922B1 High fidelity sound reproduction device for cinematographic films
11/13/1996CN1135804A Data recording method data recording apparatus, disc recording medium, computer system and data copying preventing method
11/13/1996CN1135643A Selected screen reproducing method for video compact disc reproducing system and apparatus thereof
11/13/1996CN1135639A Device for recording constant silence interval and method thereof
11/13/1996CN1135637A Information recording and replaying device
11/13/1996CN1135633A Recording and or replaying device, and recording medium having performance zone and responsible document information zone
11/12/1996US5574907 Two-pass defragmentation of compressed hard disk data with a single data rewrite
11/12/1996US5574863 System for using mirrored memory as a robust communication path between dual disk storage controllers
11/12/1996US5574787 Apparatus and method for comprehensive copy protection for video platforms and unprotected source material
11/12/1996US5574736 Data storage device and method of operation
11/12/1996US5574735 Error correction circuit which substitutes bits into data stream during periods of data loss
11/12/1996US5574714 Amplifier with peak and bottom signal level shifting control
11/12/1996US5574710 Disc reproducing apparatus
11/12/1996US5574709 Automatic gain control system and information reproduction apparatus using it
11/12/1996US5574708 Data processing apparatus
11/12/1996US5574707 Pulse width control apparatus for optical disk
11/12/1996US5574665 Receiver apparatus and method for frequency tagging
11/12/1996US5574662 Disk-based digital video recorder
11/12/1996US5574570 Video signal recording/reproduction apparatus and method for recording/reproducing two kinds of video signals carrying different amounts of information
11/12/1996US5574567 System and method for controlling play of multiple versions of the same motion picture stored on an optical disk
11/12/1996US5574453 Digital audio recording apparatus
11/12/1996US5574448 Method and apparatus for encoding data with variable block lengths
11/12/1996US5574243 Melody controlling apparatus for music accompaniment playing system the music accompaniment playing system and melody controlling method for controlling and changing the tonality of the melody using the MIDI standard
11/07/1996WO1996035209A1 Method and apparatus for digital data recording/reproduction
11/07/1996WO1996035180A1 Method and system for demodulation of multi-level pcm
11/07/1996WO1996035166A1 Enhanced-performance floppy diskette subsystem
11/07/1996WO1996028816A3 Device for optically scanning a recording medium