Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
06/1993
06/08/1993US5218599 Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method
06/08/1993US5218591 Optical disk apparatus for shaping pits recorded on an optical disk
06/08/1993US5218590 Optical disk apparatus having improved recording capacity
06/08/1993US5218589 Defect detecting method
06/08/1993US5218580 User management system for musical accompaniment playing apparatus
06/08/1993US5218486 Correction of long term drift and short term fluctuating corruption of a signal
06/03/1993DE4239994A1 Video signal processing equipment for automatic control of picture quality - receives luminance signal by average level detector and noise detector to control voltage shift stage coupled to picture quality unit
06/03/1993DE4139060A1 Selectively encoded recording and reproduction of information, primarily for entertainment machines - entering individual identifiers to enable both encoding and decoding
06/02/1993EP0544504A2 A disc reproducing apparatus and recording apparatus
06/02/1993EP0544315A2 Maximum likelihood sequence estimation apparatus
06/02/1993EP0544299A2 Data recording/reproducing apparatus capable of simultaneously performing both reproducing and recording from and in a single recording medium
06/02/1993EP0544279A2 Reproducing apparatus
06/02/1993EP0544276A2 Writable optical disk recording apparatus
06/02/1993EP0544090A1 Method for recording a digital audio signal on a motion picture film
06/02/1993EP0544017A1 Method for recording on disc
06/02/1993EP0185692B2 Process for reducing the noticeability of errors in a digital audio signal
06/02/1993CN1072794A Memory device for magnetic tape cassetts
06/02/1993CN1021092C Mode and device for record regeneration of information signal
06/01/1993US5216677 Data reproducing apparatus
06/01/1993US5216657 Method and apparatus for timing variable optical information recording
06/01/1993US5216656 Method for recording a cd-ram which is compatible with a conventional cd recording format while allowing fast accessing
06/01/1993US5216655 Method and apparatus for surface reallocation for improved manufacturing process margin
06/01/1993US5216555 Reproduction circuit arrangement having a noise reduction circuit and a gap detection circuit
06/01/1993US5216554 Digital phase error estimator
05/1993
05/27/1993WO1993010536A1 Tape recording method and apparatus
05/27/1993WO1993010534A1 Method and apparatus for detecting and correcting errors in data on magnetic tape media
05/27/1993WO1993010533A1 Method and apparatus for recording data on magnetic tape media
05/27/1993WO1993010532A1 Method and apparatus for administering data on magnetic tape media
05/27/1993WO1993010527A1 Magnetooptical disk apparatus and recording medium
05/27/1993WO1993010494A1 Method for dynamically measuring computer disk error rates
05/26/1993EP0543667A1 Optical recording method of audio data
05/26/1993EP0543446A1 Information recording device, record carrier and information reading device
05/26/1993EP0543070A1 Coding system and method using quaternary codes
05/26/1993CN1020977C Recording system as well as record carrier and recording appratus for use in system
05/25/1993US5214781 Method of managing storage medium
05/25/1993US5214768 Mass data storage library
05/25/1993US5214705 Circuit and method for communicating digital audio information
05/25/1993US5214677 Phase-locked loop with sync detector
05/25/1993US5214631 Disc recording/reproducing apparatus having a servo system capable of successively recording and reproducing tracks on a disc irrespective of turbulence of the servo system due to a disturbance
05/25/1993US5214626 Information recording/reproducing apparatus for writing on and reading from a rewritable optical disk have tracks divided into a plurality of sectors
05/25/1993US5214516 Image pickup system with an indication of the audio signal recording state
05/25/1993CA1318412C2 Disk drive controller
05/25/1993CA1318411C2 Disk drive controller
05/25/1993CA1318395C Magnetic tape recording and/or reproducing apparatus with recorded channel indicator
05/19/1993EP0542730A2 Optical disc and disc drive apparatus for writing/reading data into/from the disc
05/19/1993EP0542576A1 Apparatus and method for recording and reproducing of digital video and audio signals
05/19/1993EP0542540A2 Playback equalising circuit for a digital magnetic reproducing apparatus
05/19/1993EP0542377A2 Method of storing user information items and apparatus for reproducing stored items
05/19/1993EP0542196A2 Digital video signal recording and reproducing apparatus
05/19/1993EP0542135A2 An optical card reproducing apparatus for reproducing information with a two-dimensional solid-state imaging device
05/19/1993EP0541996A2 Checking for proper locations of storage devices in a storage device array
05/19/1993EP0541978A2 Information processing apparatus
05/19/1993EP0541580A1 Precompensation and read equalization
05/19/1993CN1020808C Enhanced data formats and machine operations for enabling error correction
05/18/1993US5212785 Apparatus and method for controlling data flow between a computer and memory devices
05/18/1993US5212682 Write-one type recording medium storing time and data-writing management data and recording apparatus thereof
05/18/1993US5212678 System for recording and reading information on a record carrier at a constant scanning speed independent of the bit rate of such information
05/18/1993US5212677 Defect inspecting apparatus for disc-shaped information recording media
05/18/1993US5212676 Performance information recording/reproducing apparatus having correction techniques using event and state information
05/18/1993US5212601 Disk drive data synchronizer with window shift synthesis
05/18/1993US5212600 Digital video tape recorder with time base correction of input video signals
05/18/1993US5212563 Cd-rom and cd-rom reproducing system
05/18/1993CA1318023C Reading apparatus and photodetector for optical recording medium
05/18/1993CA1318004C Single track orthogonal error correction system
05/13/1993WO1993009644A1 Process for reducing data in the transmission and/or storage of digital signals from several dependent channels
05/13/1993WO1993009604A1 Run length limited encoding/decoding system for low power disk drives
05/13/1993CA2082492A1 Digital video signal recording and reproducing apparatus
05/12/1993EP0541241A2 Track jump operation in two-head-type video disc player
05/12/1993EP0541219A1 Method of operating optical disk apparatus
05/12/1993EP0541030A2 Audio reproducing apparatus
05/12/1993CN1072036A Arrangement for obtaining recorded tape-like magnetic record carriers, record carrier obtained by means of arrangement and reproducing device for producing record carrier
05/11/1993USRE34245 Two stage coding method
05/11/1993US5210851 High capacity tape drive transparently writes and reads large packets of blocked data between interblock gaps
05/11/1993US5210829 Adjustable threshold for buffer management
05/11/1993US5210761 Digital signal processing circuit
05/11/1993US5210760 Optimized pointer control system
05/11/1993US5210734 Information management method for appendage type additional information recording medium
05/11/1993US5210733 Information recording and reproducing device employing variable data recording clock rates
05/11/1993US5210727 Compact disk players
05/11/1993US5210672 Magnetically indelible media type identification system
05/11/1993US5210660 Sectored servo independent of data architecture
05/11/1993CA1317671C Phase discrimination and data separation method and apparatus
05/11/1993CA1317647C Burst error correction apparatus
05/05/1993EP0540385A1 Recorded information read-out method and system
05/05/1993EP0540352A2 Data recording/reproducing device
05/05/1993EP0540351A2 Error correcting apparatus for digital data and digital sync. detecting apparatus
05/05/1993EP0540345A1 Method and apparatus for recording and reproducing information
05/05/1993EP0540329A2 Method for storing a multichannel audio signal on a compact disc
05/05/1993EP0540316A2 Method of encoding
05/05/1993EP0540164A1 Disc recording and reproducing apparatus and disc
05/05/1993EP0539966A2 A magneto-optical disc control system and method
05/05/1993EP0539494A1 High-speed, high-capacity, fault-tolerant, error-correcting storage system for binary computers
05/05/1993CN1020517C Phase discrimination and data separation method and apparatus
05/05/1993CN1020516C Processing circuit for signal
05/04/1993US5208913 Buffer memory for synchronizing data transmission and reception between two devices having mutually different operating speeds and operating methods therefor
05/04/1993US5208834 Lexicographical encoding and decoding of state-dependent codes
05/04/1993US5208813 On-line reconstruction of a failed redundant array system
05/04/1993US5208708 Copy guard system of a software program used in vtr
05/04/1993US5208707 Circuit for maintaining compatibility between different image systems during reproduction having an adaptive de-emphasis unit
05/04/1993US5208679 Apparatus for reproducing information in response to selected image change control information