Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
04/1986
04/15/1986US4583208 Sector mark decoder for an optical recorder
04/15/1986US4583134 Coded control signal to control tape recorder
04/15/1986US4583132 Recording/reproducing apparatus for selectively processing monaural, stereo and bilingual signals
04/15/1986US4583129 Color TV signal playback apparatus
04/15/1986US4583074 Expansion circuit for digital signals
04/15/1986CA1203320A1 Detection of sequential data stream
04/10/1986CN85108275A Method and apparatus for recording pcm signal
04/09/1986EP0177235A1 Apparatus for recording audio and video signals
04/09/1986EP0177185A1 Methods of recording audio signals for video tape recorder
04/09/1986EP0176946A2 Sampling-frequency synchronisation
04/09/1986EP0176685A2 Method for detecting the digital sum variation of a serial data signal
04/08/1986US4581741 Error detection apparatus for data dependent coding circuitry
04/08/1986US4581662 Position control apparatus for controlling positions of rotary heads with respect to a recording medium
04/08/1986US4581660 Circuit arrangement for retrieving data contained in binary data signals
04/08/1986CA1203020A1 Audio system having a time base error correction arrangement
04/08/1986CA1203019A1 Apparatus for recording and reproducing a digital signal
04/08/1986CA1203015A1 Recording and/or reproducing apparatus for a multi- channel digital signal
04/02/1986EP0176257A2 Magnetic recording apparatus for intermittently recording a video signal
04/02/1986EP0176218A2 Error correcting system
04/02/1986EP0175941A2 Device and method for making and optionally compensating a temporary relation between digital signal sequences
04/01/1986US4580278 Read clock producing system
04/01/1986US4580255 Servo circuit for a signal reproducing apparatus
04/01/1986US4580176 Adaptive equalization circuit for magnetic recording channels utilizing signal timing
04/01/1986US4580100 Phase locked loop clock recovery circuit for data reproducing apparatus
04/01/1986CA1202718A1 Process and device for generating synchronizing signals in an optical data carrier write - read apparatus
04/01/1986CA1202715A1 Apparatus for decoding video address code signals
03/1986
03/27/1986WO1986001955A1 Method and apparatus for processing digital signals prior to recording
03/26/1986EP0175308A2 Recording disk data playback apparatus
03/25/1986US4578799 Method and apparatus for recovering data and clock information from a self-clocking data stream
03/25/1986US4578722 Method for checking disk identity in a flexible disk recorder
03/25/1986US4578721 Stress test for magnetic disc recording apparatus
03/25/1986US4578720 Self-clocking code demodulator with error detecting capability
03/25/1986US4577944 Lens mount with noise reducing means
03/19/1986EP0174860A2 Information recording and readout
03/19/1986EP0174822A2 Drop-out correcting apparatus
03/19/1986EP0174807A2 Data storage and decoding apparatus
03/19/1986EP0174666A2 Recording disk data playback apparatusand method
03/19/1986EP0174636A2 Method for masking errors
03/19/1986EP0174633A1 Method for Correcting Time Base Fluctuations in a Reproduced Video Signal
03/18/1986US4577319 Error flag processor
03/18/1986US4577305 Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore
03/18/1986US4577289 Hardware key-on-disk system for copy-protecting magnetic storage media
03/18/1986US4577241 Digital video tape recorder apparatus
03/18/1986US4577238 Circuit for reducing intermodulation distortion in a frequency-modulated signal
03/18/1986US4577237 Error correction in digital television signals
03/18/1986US4577236 Apparatus for reproducing a color video signal
03/18/1986US4577180 Digital data converting method and apparatus thereof
03/18/1986US4577155 Data extracting circuit
03/12/1986EP0174095A2 Tracking control apparatus
03/12/1986EP0173900A1 Error-protecting code for a digital video tape recorder
03/11/1986US4575774 Disk subsystem read write control
03/11/1986US4575773 Method and apparatus for selectively recording instrument quality data or composite instrument quality data and video signals on a commercial unmodified video tape recorder
03/11/1986US4575772 Apparatus for recording additional video signals in a helical scan operation
03/11/1986CA1201810A1 Error correction method for the transfer of blocks of data bits, a device for performing such a method, a decoder for use with such a method, and a device comprising such a decoder
03/11/1986CA1201803A1 Information signal recording and reproducing apparatus
03/05/1986EP0173538A2 Helical scanning type magnetic recording/reproducing method
03/05/1986EP0173530A2 Variable speed replay of digital audio with constant output sampling rate
03/05/1986EP0173483A2 Error concealment in digital television signals
03/05/1986EP0173411A2 Computer memory back-up for digital and analogue information
03/05/1986EP0172871A1 A system for recording images and relating sound
03/04/1986US4574361 Apparatus for dividing the elements of a Galois field
03/04/1986US4574234 System for measuring selected parameters of electrical signals and method
03/04/1986US4574206 Wave-shaping circuit
02/1986
02/26/1986EP0172439A2 Copy protected disk
02/25/1986US4573039 Digital to analog converter
02/25/1986US4573034 Method of encoding n-bit information words into m-bit code words, apparatus for carrying out said method, method of decoding m-bit code words into n-bit information words, and apparatus for carrying out said method
02/25/1986US4572965 Circuit for detecting existence of an information signal
02/25/1986CA1201201A1 System for recording scrambled digital signals and playback system therefor
02/25/1986CA1201070A1 Adaptive signal weighting system
02/19/1986EP0171759A2 Signal-processing apparatus compensating the distortion in a transmitted or recorded signal
02/18/1986US4571716 Method and apparatus for scanning a recording medium for defects
02/18/1986US4571645 Floppy disk handling apparatus
02/18/1986US4571575 Synchronization-promoting data coding method
02/18/1986US4571572 Digital/analogue converter
02/13/1986WO1986001026A1 Apparatus for recording and/or reproducing optical cards
02/12/1986EP0171288A2 Method of magnetic recording
02/12/1986EP0171234A2 Circuitry for characterizing speech for tamper protected recording
02/12/1986EP0171022A2 Signal delay device
02/12/1986EP0170804A1 Phase difference demodulator
02/11/1986US4570252 Optical data retrieval system using multi-spectral light sources
02/11/1986US4570193 Video signal processing device including emphasis and/or de-emphasis circuit
02/11/1986US4570153 Signal conversion apparatus for use in PCM signal processing system
02/11/1986CA1200600A1 Digital audio disc system
02/11/1986CA1200598A1 Digital signal reproducing apparatus
02/11/1986CA1200596A1 System for recording continuous-play and stop-motion signal
02/05/1986EP0170328A1 Device for correcting and concealing errors in a data stream, and video and/or audio reproduction apparatus comprising such a device
02/05/1986EP0170207A2 A write clock pulse generator used for a time base corrector
02/05/1986EP0170032A1 Magnetic recording-reproducing apparatus
02/05/1986EP0169910A1 Rotary head type magnetic image recorder/reproducer
02/05/1986EP0169908A1 Method and circuit for decoding error coded data
02/04/1986US4569051 Methods of correcting errors in binary data
02/04/1986US4568987 Amplifier input circuit having a figure eight conductive pattern
02/04/1986US4568936 Verification system for document substance and content
02/04/1986US4568892 FM Modulator using an oscillating feedback circuit
02/04/1986CA1200312A1 Control arrangement for electronic appliance
01/1986
01/30/1986WO1986000772A1 Process for storing digitally coded and image synchronized audio signals
01/30/1986WO1986000745A1 Recorded information verification system
01/29/1986EP0169540A2 Method and apparatus for recording and reproducing a digital signal with a stationary head
01/28/1986US4567568 Apparatus for dividing the elements of a Galois field
01/28/1986US4567535 Recording and/or reproducing apparatus