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)
05/1991
05/08/1991EP0425533A1 Process for organizing and reading a magnetic support and support therefor
05/08/1991CA2005186A1 Jump rope incorporating audio device
05/07/1991US5014318 Apparatus for checking audio signal processing systems
05/07/1991US5014274 Code-error correcting device
05/07/1991CA1283974C Recorded information verification system
05/07/1991CA1283973C Index signal detecting system
05/04/1991CA2029151A1 Data redundancy and recovery protection
05/02/1991WO1991006101A1 Variable-speed digital signal reproducing device
05/02/1991WO1991006094A1 Adaptive read/write channel controls
05/02/1991EP0425475A1 Data transmission and detection system
05/02/1991EP0425048A2 Apparatus for verification of data established on a record carrier during write
05/02/1991EP0425033A1 Device for reading digital information recorded on an information carrier
05/02/1991EP0424910A2 Information recording/reproducing apparatus for recording information and verifying recorded information
05/02/1991EP0424903A2 Data recording system
05/02/1991EP0424469A1 System and process for vcr scheduling.
05/02/1991DE4033993A1 Digital audio recording medium - has auxiliary code used for automatic sound field control during playback of recorded audio signals
05/01/1991WO1991007052A1 Method and apparatus for producing customized video recordings
04/1991
04/30/1991US5012460 RAM head positioning and tracking system
04/30/1991US5012459 Data recorder
04/30/1991US5012361 Data signal reproducing apparatus for helical scan recording
04/30/1991US5012355 Rotary head type magnetic recording/reproducing apparatus with read-after-write feature
04/30/1991US5012245 Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio
04/30/1991US5012141 Signal delay device using CMOS supply voltage control
04/24/1991EP0423804A2 Information recording disk playing apparatus
04/24/1991EP0423652A2 Video device for two television programme sources
04/24/1991CN1050941A Digital multichannel recording method and equipment
04/23/1991US5010549 Packet data generator
04/23/1991US5010539 Optical disk device for storing both analog and discrete data and which utilizes both CLV and CAV techniques
04/23/1991US5010421 Variable speed sound reproducing apparatus for sound reproduction and review system
04/23/1991US5010417 Playback method for use in a recording medium playing apparatus using information control signals
04/23/1991CA1283479C Data input circuit with digital phase locked loop
04/18/1991WO1991005437A1 Device for programmed recording by recognition of reference signals
04/18/1991WO1991005434A1 Processing circuit for video signal
04/18/1991WO1991005335A1 Digital optical sound system
04/18/1991DE3934643A1 Data signal conversion into binary, frequency shifted output signal - generates both output signal frequencies by different division of clock pulse signal
04/17/1991EP0422849A2 Digital recording and reproducing apparatus or digital recording apparatus
04/17/1991EP0422030A1 Disk drive memory.
04/17/1991EP0287593A4 Substituting soundtrack
04/16/1991US5008872 Optical disc reproduction apparatus which detects maximum audio signal level recorded on an optical disk
04/16/1991US5008871 Dictate/transcribe control for digital dictation system
04/16/1991US5008764 Rotary head type digital signal reproducing apparatus with slow tape speed mode and improved tracking control
04/16/1991US5008761 Readout circuit in magnetic recording device
04/16/1991US5008669 Encoding/decoding system for optical recording/reading
04/16/1991CA1282920C Stable carbon-plastic electrodes and method of preparation thereof
04/10/1991EP0421871A2 Record data generating method
04/10/1991EP0421732A2 Information data recording/reproducing apparatus
04/10/1991EP0421651A2 Integral switched capacitor for filter/digital to analog converter for sigma-delta encoded digital audio
04/10/1991EP0421417A2 Magnetic recording and reproducing apparatus
04/09/1991US5006819 Track and hold phase locked loop circuit
04/09/1991CA1282863C Synchronous control system
04/03/1991EP0420667A2 Phase-synchronous controller for production of reference clock signal in optical disk drive system
04/03/1991EP0420660A2 A disc medium and a disc memory apparatus for reading information from said medium
04/03/1991EP0420474A2 Rebuilding edited digital audio files
04/03/1991EP0420439A1 Method of and apparatus for determining the position of a transducer
04/03/1991EP0420438A1 A method of and apparatus for detecting position error of a transducer
04/03/1991EP0420418A2 Video signal noise reducing circuits
04/03/1991EP0420280A2 Digital information signal reproducing apparatus for reproducing digital audio signal at the reproducing speed different from the recording speed
04/03/1991EP0420252A2 Information recording system
04/03/1991EP0420211A2 Optical disk apparatus
04/03/1991EP0420206A2 Binary signal detector
04/03/1991EP0420179A2 Data recording/reproducing method and device
04/03/1991EP0419680A1 Frequency modulator
04/03/1991EP0419450A1 Method and system for modulating a carrier signal
04/03/1991CN1050457A Mothod and device for obtaining record carrier and anticopy means
04/03/1991CA2026644A1 Recording data generating method
04/02/1991US5005184 Method and apparatus for waveform equalization
04/02/1991US5005165 Method for managing information on a storage media without losing information due to effects
04/02/1991CA1282491C Recording system capable of recording a sequence of optimum coded signals on an rom
03/1991
03/27/1991EP0419012A2 Information recording/reproducing apparatus
03/27/1991EP0418964A1 Record carrier, method of and information recording device for obtaining such record carriers, and information recording device comprising anti-copy means to inhibit unauthorized copying
03/27/1991EP0418885A2 Digital data transmitting apparatus
03/27/1991EP0418862A2 Frequency modulation circuit using VCO
03/27/1991EP0418858A2 Method of recording/reproducing information for rotary-type information recording/reproducing apparatus
03/27/1991EP0418854A2 Semiconductor integrated circuit for video signal processing
03/27/1991EP0418850A2 Information recording and reproducing method
03/27/1991EP0418702A2 Disk drive apparatus having improved initialization process
03/26/1991US5003559 Digital transmission system
03/26/1991US5003557 Apparatus for receiving digital signal
03/26/1991US5003541 Method and circuit for semiconductor memory processing of video signals with Reed-Solomon error detection
03/26/1991US5003526 System for recording digital information in a pulse-length modulation format
03/26/1991US5003411 Method for recording/reproducing and searching digital signals using a helical scan type rotary head
03/26/1991US5003410 System for recording/reproducing an information source having an apparatus specific identification signal
03/26/1991US5003408 Digital computer
03/26/1991US5003407 Apparatus for selectively reproducing a video signal and a digitized audio signal recorded on a record medium with one of a plurality of recording densities
03/26/1991US5003307 Data compression apparatus with shift register search means
03/26/1991CA1282168C Apparatus for reproducing a pcm modulated signal, comprising a mutingcircuit
03/21/1991WO1991003879A1 Circuit for the recognition of the wanted signal in a binary signal
03/20/1991EP0418100A2 Information reproducing device
03/20/1991EP0418070A2 Information recording and reproducing device
03/20/1991EP0417328A1 Clock generator
03/20/1991EP0417277A1 Disk recording/reproducing apparatus and disk recording/reproducing method
03/20/1991EP0417272A1 Receiver for quadraphase modulation signals.
03/19/1991US5001698 Read-out information signal processing circuit in an optical recording and reproducing system
03/19/1991US5001693 Radio frequency signal processing circuit which prevents stepwise variations of a DC component
03/19/1991US5001692 Optical recording system providing a recording signal waveform adapted to the recording characteristics of the record carrier, and recording apparatus and record carrier for use in such systems
03/19/1991US5001568 Signal evaluation by accumulation at one rate and releasing and testing at a slower rate
03/19/1991US5001482 BiCMOS digital-to-analog converter for disk drive digital recording channel architecture
03/13/1991EP0416968A2 Array disk system and method of writing and reading data in array disk system
03/13/1991EP0416695A1 Circuit for detecting pulses, and video recorder comprising the circuit
03/13/1991EP0416663A2 Data recording apparatus
1 ... 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 ... 820