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)
09/1978
09/19/1978US4115786 Constant wavelength magnetic recording
09/19/1978US4115768 Sequential encoding and decoding of variable word length, fixed rate data codes
09/19/1978US4115759 Multiple bit deskew buffer
09/19/1978US4114830 Rotation control system
09/12/1978US4113994 Dictation recording and transcribing system utilizing selectable dual message record-playback apparatus
09/05/1978US4112501 System and method for loading computer diagnostic programs
08/1978
08/29/1978US4110798 Frequency response equalizer
08/29/1978US4110785 Clock generator for video signal processing
08/29/1978US4110557 Phase lock oscillator for use in data processing system
08/29/1978CA1037608A1 Self-clocked pulse signal decoders
08/29/1978CA1037607A2 Retrospective pulse modulation and apparatus therefor
08/29/1978CA1037570A1 Demodulating circuitry for pulse rate modulation data reproduction
08/22/1978US4109236 Apparatus for digital data recovery from mass storage devices
08/15/1978US4107782 Prompting programmable calculator
08/15/1978US4107729 Method and apparatus for reproducing signals from a rotating record medium and method and apparatus for making same
08/15/1978US4107650 Error correction encoder and decoder
08/15/1978US4107478 Angle modulated wave demodulation system
08/15/1978CA1036503A1 Special effects generation and control system for motion pictures
08/08/1978US4106063 Circuit arrangement for a dropout detector
08/01/1978US4103823 Parity checking scheme for detecting word line failure in multiple byte arrays
07/1978
07/25/1978US4103234 System for transmission storage and/or multiplexing of information
07/18/1978US4101939 Video synchronizer with velocity compensation
07/18/1978US4101849 Adaptive filter
07/11/1978US4100575 Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof
07/11/1978US4100567 Compensating time-based errors in a reproduced video signal
07/04/1978US4099030 Speech signal processor using comb filter
06/1978
06/13/1978US4095259 Video signal converting system having quantization noise reduction
05/1978
05/30/1978US4092732 System for recovering data stored in failed memory unit
05/23/1978US4091425 Isolated non-consecutive missing half cycle compensator
05/23/1978US4091380 Programmable binary amplifier
05/23/1978US4091242 High speed voice replay via digital delta modulation
05/16/1978US4090215 Electronic time base error correction methods and arrangements
05/16/1978US4090144 Circuit arrangement for recognizing zero transitions of signals
05/02/1978US4087840 Method and apparatus for magnetically recording and reproducing physiological information
04/1978
04/25/1978US4086634 Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording
04/18/1978US4085426 Method for protecting against drop-outs in a sound signal recorded on a video-disc
04/18/1978US4085296 Modulated sound reading system
04/18/1978US4085291 Synthetic supplementary channel matrix decoding systems
04/18/1978US4085288 Phase locked loop decoder
04/11/1978US4084201 Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control
04/11/1978US4084181 Apparatus for transmission of chrominance signals during blanking period
04/11/1978US4084176 Pilot signal processing means for video recording apparatus
04/04/1978US4083019 Current controlled emitter coupled multivibrator
03/1978
03/28/1978US4081844 Interleaved synch and beginning of data indicators
03/28/1978US4081834 System for compensating jitter of video signal
03/28/1978US4081756 Dual channel signal detector circuit
03/21/1978US4080576 Tow mode harmonic and nonharmonic phase detector
03/14/1978US4079335 Adaptive level control for electro-acousto device
02/1978
02/28/1978US4077047 Color killer enhancement in a video signal recording/playback system
02/28/1978US4077046 System for recording and/or reproducing a video signal
02/28/1978US4076969 Impulse noise reduction system
02/21/1978US4075665 Method and apparatus for increasing the recording capacity of a disk
02/14/1978US4074332 Method and digital circuit for measuring skew of magnetic heads
02/14/1978US4074325 System for sensing the peaks of an output from a magnetic head
02/14/1978US4074307 Signal processor using charge-coupled devices
02/14/1978US4074149 Peak detecting with constant fractional offset
02/07/1978US4072994 Read-after-write head
02/07/1978US4072987 Digital storage systems
02/07/1978US4072914 Compression and expansion system with enlarged dynamic range
01/1978
01/17/1978US4069499 Write clock pulse signal generator for digital time base corrector
01/17/1978US4069462 Phase-locked loops
01/10/1978US4068300 Data processing system utilizing data field descriptors for processing data files
01/10/1978US4068257 Color video signal recording and/or reproducing system
01/10/1978US4068256 Video recording apparatus with color killer
01/03/1978US4067050 Programmed presentation system
12/1977
12/27/1977US4065796 Digital data decoder
12/27/1977US4065795 Recording technique for an audio/video program wherein the audio incorporates video change signals
12/27/1977US4065794 Playback technique for an audio-video program wherein the video display is controlled by signals recorded as a part of the audio program
12/27/1977US4065793 Translator for processing meter telemetry recording containing power loss pulses
12/27/1977US4065787 Time base corrector
12/27/1977US4065765 Pulse-width demodulator and information storage device
12/13/1977US4063291 Apparatus and method for encoding and decoding digital information
12/13/1977US4063070 Wideband frequency multiplier particularly adapted for use in badge readers and the like
12/06/1977US4062047 Apparatus for magnetic tape head alignment
11/1977
11/29/1977US4060837 Variable cell width recording
11/29/1977US4060764 Transceiver audio system
10/1977
10/25/1977US4055848 Signal processing for off-air video recorder
10/18/1977US4054950 Apparatus for detecting a preamble in a bi-phase data recovery system
10/18/1977US4054947 Computer to tape deck interface
10/18/1977US4054921 Automatic time-base error correction system
10/11/1977US4053944 Microprocessor controlled signal pattern detector
10/11/1977US4053936 Read and write circuitry
10/11/1977US4053738 Programmable data envelope detector
10/11/1977US4052798 Audio-visual teaching system
10/04/1977USRE29431 Phase-locked loop for an electronic sectoring scheme for rotating magnetic memory
10/04/1977US4052740 Moire interference reducing circuit for fm video recorders
10/04/1977US4052698 Multi-parallel-channel error checking
10/04/1977US4052558 Data transmission system
09/1977
09/27/1977US4051539 Differential duration demultiplexing method and system
09/27/1977US4051526 Television system comprising a video storage device and a television receiver
09/27/1977US4051457 System for generating a character pattern
09/13/1977US4048481 Diagnostic testing apparatus and method
08/1977
08/30/1977US4045743 Detector circuits
08/30/1977US4045621 Recording system for a multichannel record disc
08/30/1977US4045613 Digital storage systems
08/23/1977US4044329 Variable cyclic redundancy character detector
08/23/1977US4044328 Data coding and error correcting methods and apparatus
08/09/1977US4041526 Control of automatic color control and color killer circuits in video signal reproducing apparatus
08/09/1977US4041453 Signal handling system for minimizing dropout effect
08/02/1977US4040100 Digital video tape frame code readout system
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