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)
10/1980
10/28/1980CA1088673A1 Video signal converting system
10/28/1980CA1088665A1 Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof
10/21/1980US4229771 Method of recording a control signal adjacent another signal track on a magnetic recording medium, and system therefor
10/21/1980CA1088204A1 Video signal recording and/or reproducing apparatus
10/21/1980CA1088203A1 Use of a video signal recorder/reproducer for recording and reproducing pulse signals
10/21/1980CA1087990A1 Dual medium dictation recording and transcription system
10/14/1980US4228470 Electronic reminder system
10/14/1980CA1087728A1 Video recording apparatus
10/07/1980US4227221 PCM Recording apparatus
10/07/1980US4227175 Data recognition apparatus
09/1980
09/30/1980CA1086834A1 Data clock separator with missing clock detect
09/23/1980US4224642 PCM Recording and reproducing method providing for dropout compensation
09/23/1980US4224481 Compression and expansion circuitry for a recording and playback system
09/18/1980WO1980001964A1 Noise reduction apparatus
09/17/1980EP0015499A1 Video signal recording and reproducing apparatus
09/16/1980US4223338 Color television receiver and VTR system
09/16/1980US4223282 Method of reducing interference components in a frequency modulated signal and device for carrying out said method
09/16/1980US4223188 Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means
09/09/1980US4222080 Velocity tolerant decoding technique
09/09/1980US4222079 PCM Recording and reproducing system
09/09/1980US4222078 Method and apparatus for recording of wide band signals, particularly video signals
09/09/1980US4222072 Video player/recorder with non-linear mark length modulation
09/09/1980US4222009 Phase lock loop preconditioning circuit
09/09/1980US4221930 FM Defect compensation apparatus
09/09/1980CA1085506A1 Variable cyclic redundancy character detector
09/03/1980EP0015031A1 Apparatus for synchronizing clock signals by means of incoming serial data signals
09/02/1980US4220997 Process and apparatus for transferring information between an information store and a data channel
09/02/1980US4220968 Circuit for generating a constant reference oscillation from a video signal affected by a time error
09/02/1980US4220926 Noise detector employing plural delay circuits
09/02/1980US4220925 Encoding analog signals into digital signals using a triangular reference
09/02/1980CA1152164B Dc free encoding for data transmission system
09/02/1980CA1085057A1 Method of transmitting digital signals
09/02/1980CA1085000A1 Dc free encoding for data transmission system
08/1980
08/26/1980US4219890 Digital signal regulation system
08/26/1980US4219851 Group coded recording data recovery system
08/19/1980US4218612 Magnetic signal detector
08/19/1980CA1084154A1 Compensating time-base errors in a reproduced video signal
08/12/1980CA1083709A1 Signal defect compensator
08/12/1980CA1083488A1 Pulse code modulated digital audio system
08/06/1980EP0013884A1 Phase-locked oscillator circuit and system for generating a clock signal using this circuit
08/05/1980US4216492 Method of treating television picture signals and wide-band data signals by modulating the color carrier signal
08/05/1980US4216460 Transmission and/or recording of digital signals
07/1980
07/29/1980US4215430 Fast synchronization circuit for phase locked looped decoder
07/29/1980US4215335 Digital signal transmission method
07/29/1980CA1082803A1 Constant wavelength magnetic recording
07/22/1980US4214280 Method and apparatus for recording data without recording on defective areas of a data recording medium
07/22/1980US4214279 Clocking system for servo signal having two or more harmonically related frequencies
07/22/1980US4214262 Digital apparatus for correcting a time-base error in a television video signal
07/22/1980CA1082358A1 Device for recording or reproducing a video signal
07/15/1980US4213144 Method of modulating a composite color television signal on a carrier signal and device for carrying out said method
07/15/1980CA1081856A1 Microprocessor signal detector
07/09/1980EP0013070A1 Video record systems
07/09/1980EP0012880A1 Method of decoding phase-encoded, frequency-modulation encoded and modified-frequency modulation encoded binary data
07/08/1980US4212038 Double density read recovery
07/08/1980US4211997 Method and apparatus employing an improved format for recording and reproducing digital audio
06/1980
06/25/1980EP0012649A1 Magnetic read head
06/24/1980US4209809 Apparatus and method for record reorientation following error detection in a data storage subsystem
06/24/1980US4209800 Magnetic color video recording and reproducing system with color killer circuit
06/17/1980US4208673 Color recorder for reducing crosstalk
06/17/1980CA1079848A1 Disk storage apparatus having signals recorded in a specific format
06/17/1980CA1079844A1 Retry method and apparatus for use in a magnetic recording and reproducing system
06/11/1980EP0012059A1 Method and apparatus for elaborating and processing two distinct pulse trains carrying information
06/03/1980US4206476 Control circuit for use with a time-compression/time-expansion system in a pulse signal record/playback device
06/03/1980US4206440 Encoding for error correction of recorded digital signals
05/1980
05/28/1980EP0011534A1 Method and apparatus for processing analog, in particular pseudoperiodic signals
05/27/1980US4205352 Device for encoding and recording information with peak shift compensation
05/27/1980US4205324 Methods and means for simultaneously correcting several channels in error in a parallel multi channel data system using continuously modifiable syndromes and selective generation of internal channel pointers
05/20/1980US4204199 Method and means for encoding and decoding digital data
05/20/1980CA1078063A1 Noise reduction circuit
05/14/1980EP0010959A1 Phase lock loop
05/13/1980US4203134 FM Signal demodulator with defect detection
05/13/1980US4203076 Clock pulse signal generator having an automatic frequency control circuit
05/06/1980US4202018 Apparatus and method for providing error recognition and correction of recorded digital information
05/06/1980US4202016 Digital magnetic data storage and retrieval using audio analog recording techniques
05/06/1980US4201980 GCR Data write control apparatus
05/06/1980US4201976 Plural channel error correcting methods and means using adaptive reallocation of redundant channels among groups of channels
05/06/1980US4201942 Data conversion system
05/06/1980CA1077170A1 Apparatus and method for transmitting binary-coded information
04/1980
04/30/1980EP0010506A1 Digital coding and decoding methods and devices for the recording of audio signals with a television signal, particularly on a video disk
04/30/1980EP0010494A1 Method of writing information on a magnetic-recording carrier
04/30/1980EP0010155A1 Method of and apparatus for magnetic recording detection
04/29/1980US4200845 Phase comparator with dual phase detectors
04/22/1980US4199820 Random access storage apparatus with a movable recording medium
04/22/1980US4199780 Video drop out compensator incorporating digital field storage
04/22/1980CA1076259A1 Speed-tolerant digital decoding system
04/22/1980CA1076245A1 Video time base corrector
04/17/1980WO1980000760A1 Error recognition and correction of digital information
04/16/1980EP0010040A1 Method for transmitting an analog audiofrequency signal during line-field synchronisation intervals of a television signal, and apparatus for utilising this method
04/16/1980EP0009939A1 Phase-locked loops
04/15/1980US4198701 Digital optical recorder-reproducer system
04/15/1980US4198663 Digital signal recording system
04/15/1980US4198659 Vertical synchronizing signal detector for television video signal reception
04/15/1980US4198650 Capacitive-type nonlinear emphasis circuit
04/15/1980CA1075817A1 Sequential encoding and decoding of variable word length fixed rate data codes
04/01/1980US4196445 Time-base error correction
03/1980
03/25/1980US4195320 Record track identification and following
03/25/1980US4195318 High density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmission
03/19/1980EP0008740A1 Method for detecting retriable errors and apparatus for reorienting a transducer in a data storage system
03/18/1980US4194223 Magnetic recording detection
03/18/1980US4194222 Multitrack recorder including superimposed real time code
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