Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
09/1990
09/26/1990EP0389006A2 Method and apparatus for recording a digital information signal
09/26/1990EP0389005A2 Method and apparatus for recording a digital information signal
09/26/1990EP0127687B1 Method of recording pcm signal
09/25/1990USRE33356 Frequency modulation coding methods with reduced transition intervals
09/25/1990US4959825 Recorded information reproducing apparatus with reading and writing phase adjustment
09/25/1990US4959732 Still video signal playback apparatus for converting an input video signal into a noise cancelled, drop-out compensated playback signal
09/25/1990US4959620 Frequency demodulation circuit
09/25/1990CA1274623A1 Disk drive optimized channel circuit
09/23/1990WO1990011650A1 Digital circuit for encoding binary information
09/23/1990WO1990011649A1 Circuit for decoding binary information
09/23/1990CA2049932A1 Circuit for decoding binary information
09/23/1990CA2048995A1 Digital circuit for encoding binary information
09/20/1990WO1990006579A3 Improved disc unit
09/19/1990EP0388031A2 Reliability enhancement of nonvolatile tracked data storage devices
09/19/1990EP0387882A2 Magnetic recorder/reproducer for recording digital signal on a plurality of tracks of magnetic recording media and reproducing the same
09/19/1990EP0387813A2 Automatic equalizer
09/19/1990EP0387809A1 A method of writing in and reading out data to and from a magnetic card and a reader/writer for such a method
09/19/1990EP0387804A2 Recording of frequency-multiplex signal on recording medium
09/19/1990EP0387443A1 Method and apparatus for testing operation of a memory device
09/18/1990US4958351 High capacity multiple-disk storage method and apparatus having unusually high fault tolerance level and high bandpass
09/18/1990US4958337 Disk recording checking method for determining if a disk is defective by the number of errors present
09/18/1990US4958314 Information recording/reproducing apparatus
09/18/1990US4958246 Device of multi-channel rotary head type having function to discriminate recorded state
09/18/1990US4958243 Phase discrimination and data separation method and apparatus
09/18/1990US4958234 Distortion eliminating circuit
09/18/1990CA1274284A1 Circuit for producing clock signal for reproducing pcm signal
09/17/1990CA2010936A1 Skewed xor data storage process
09/13/1990DE4007368A1 Informationsaufnahme-/-wiedergabeverfahren und dieses verfahren verwendendes magnetbandsubsystem Information Recording - / - reproducing method and this method-use magnetic tape subsystem
09/13/1990DE4006986A1 Information handling system for disc memory - has buffer memory with facility for increased data throughput
09/12/1990EP0387050A2 Magneto-optical disk inspecting method and apparatus
09/12/1990EP0386914A1 Disc player
09/12/1990EP0386913A1 Disc player
09/12/1990EP0386362A2 Data storage apparatus
09/12/1990EP0233783B1 Apparatus for recording and/or reproducing data
09/12/1990EP0153410B1 Apparatus for recording and reproducing signal
09/12/1990CN1009608B Recording and reproducing time coding signals with digital video frequency
09/11/1990USRE33332 Apparatus for correcting errors
09/11/1990US4956837 Apparatus for avoiding spectrum spreading when switching a transmitter on and off
09/11/1990US4956808 Real time data transformation and transmission overlapping device
09/11/1990US4956726 Information signal reproducing apparatus in which control signal condition and information signal level are varied so as to correspond
09/11/1990US4956724 Multi-channel recording and/or reproducing apparatus capable of simultaneously recording and/or reproducing of two channels
09/11/1990US4956720 Jitter control circuit having signal delay device using CMOS supply voltage control
09/11/1990CA1274016A1 Optical disk duplicating apparatus and duplicated optical disk
09/08/1990WO1990010906A1 Method of reading and writing files on nonerasable storage media
09/07/1990WO1990010292A1 Process for controlling the use of an information storage medium, in particular of a magnetic or magneto-optic type, and system for its implementation
09/05/1990EP0385867A2 Digital signal reproducing apparatus
09/05/1990EP0385739A2 Method and apparatus for writing a serial data pattern on a magnetic medium
09/05/1990EP0385163A1 Method and arrangement for recording video information of a video presentation on a web-like recording support
09/05/1990CN1009505B Non-statistical method and device for determining error rate of optical disk
09/04/1990US4955022 Encoding apparatus and method for error correction
09/04/1990US4955010 Constant velocity track jump servo system for disc players
09/04/1990US4954911 Reproducing apparatus having a mechanism for compensating time-base fluctuations
09/04/1990US4954903 Digital signal reproduction apparatus for reading magneto-optical disks
08/1990
08/31/1990CA2006128A1 Error checking device in a digital audio tape recorder and a method therefor
08/30/1990DE4005769A1 Error checking in digital tape recorder - has separate heads to provide data for checking against main buffer data
08/29/1990EP0384405A2 Optical recording and reproducing apparatus
08/29/1990EP0384073A2 Disc playing apparatus
08/28/1990US4953168 Digital signal recording apparatus
08/28/1990US4953153 Data reproducing device controlling image display dependent upon loss of time data
08/28/1990US4953041 Read channel detector for use in digital magnetic recording systems
08/28/1990US4953039 Real time digital data transmission speed conversion system
08/28/1990US4953035 Method of recording and reproducing picture information, recording medium, and recording medium playing apparatus
08/28/1990CA1273432A1 High capacity disk storage system having unusually high fault tolerance level and bandpass
08/23/1990WO1990009705A1 Adaptive data compression apparatus for a tape drive system
08/23/1990WO1990009664A1 Asynchronous data channel for information storage subsystem
08/23/1990WO1990009663A1 Signal security system
08/22/1990EP0383298A2 Data recording and reproducing apparatus
08/22/1990EP0383274A1 Recording and/or reproducing method for tape recorder
08/22/1990EP0383271A2 Waveform shaping circuit and receiver using same
08/22/1990EP0383145A1 Apparatus for recording and reproducing signals
08/21/1990US4951284 Method and means for correcting random and burst errors
08/21/1990US4951282 Method and apparatus for measuring the quality of digital signals
08/21/1990US4951154 Magneto-optic recording/reproducing apparatus
08/21/1990US4951049 Self clocking binary information encoder
08/16/1990EP0382509A1 Video signal processing circuit
08/16/1990EP0382192A1 Scanning tunneling microscope memory apparatus
08/16/1990EP0382154A2 Optical disc recording system
08/16/1990EP0381807A2 Method and apparatus for recording and reproducing information including plural channel audio signals
08/14/1990US4949326 Optical information recording and reproducing system using optical disks having an error correction function
08/14/1990US4949325 Method and associated apparatus and medium for optical recording and reproducing information
08/14/1990US4949303 Information retrieval control system with input and output buffers
08/14/1990US4949245 Intermediate memory system for connecting microcomputers to a rotating disk memory
08/14/1990US4949200 Method and apparatus for encoding and mapping magnetic disk sector addresses
08/14/1990US4949199 Magnetic recording/reproduction apparatus
08/14/1990US4949197 Dead track acquisition for phase-locked loop control
08/14/1990US4949196 Method and apparatus for asymmetrical RLL coding
08/14/1990US4949173 Security surveillance system with intermittent magnetic recording/reproducing device
08/14/1990CA1272800A1 Apparatus and method for preventing unauthorized dubbing of a recorded signal
08/09/1990WO1990009662A1 Method of recording cue signal and detector therefor
08/09/1990WO1990009064A1 Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio
08/09/1990WO1990009022A1 Low bit rate transform coder, decoder and encoder/decoder for high-quality audio
08/09/1990WO1990009021A1 Read channel detector for use in digital magnetic recording systems
08/09/1990WO1990008999A1 Read/write head buffer
08/09/1990DE4009683A1 Digital storage arrangement for traffic messages - has bandwidth low-pass filter limiting without loss of information
08/09/1990DE3903165A1 Magnetic tape apparatus for the digital recording and reproduction of audio or video signals
08/09/1990DE3903163A1 Magnetic tape apparatus for the digital recording and reproduction of audio or video signals
08/08/1990EP0381208A2 Device for digital recording and reproducing of audio or video signals
08/08/1990EP0381095A2 Data reproducing circuit for memory system
08/08/1990EP0380745A2 Disc playing apparatus
08/07/1990US4947383 Machine readable markers for cartesian information storage media
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