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)
01/1989
01/03/1989US4796003 Data compaction
01/03/1989CA1248227A1 Process for storage on a disk of a plurality of series of data intended for different users, and the disk produced by this process
01/03/1989CA1248221A1 Digital data recovery circuit
12/1988
12/28/1988EP0296989A1 Device for adjusting the minimal and maximal frequencies of a frequency modulated video signal
12/28/1988CN88100953A Method of handling disk section errors in dasd cache
12/27/1988US4794602 Method for error detection
12/27/1988US4794548 Data collection apparatus and train monitoring system
12/27/1988US4794469 Recorded data reproducing apparatus
12/27/1988US4794468 Magnetic disk with analog and digital video signals recorded thereon and apparatus for making recording on said disk
12/22/1988DE3720233A1 Copy protection for data processing programs
12/21/1988EP0295979A1 Method for writing information on a magnetic recording medium
12/21/1988EP0295759A2 Apparatus for using differential data detection in write protection of an optical recorder
12/21/1988CN88103284A Fault-tolerant, error-correcting storage system
12/20/1988US4792953 Digital signal error concealment
12/20/1988US4792937 Process for the management of files on a non-erasable information carrier
12/20/1988US4792936 Process for defining and modifying a partition of the storage space of a non-erasable carrier
12/20/1988US4792933 Optical recording/reproducing apparatus having disk lifetime estimating device
12/20/1988US4792869 Electronic apparatus for proper handling of interchangeable memory
12/20/1988US4792866 Still picture recording apparatus
12/20/1988US4792864 Apparatus for detecting recorded data in a video tape recorder for audience rating purposes
12/20/1988US4792861 Video signal recording apparatus with track centering using crosstalk detection and third odd multiple field recording
12/20/1988US4791741 Card with built-in record/playback capability
12/15/1988WO1988009991A1 Device for detecting reading error from optical recording medium
12/15/1988WO1988009968A1 Fault-tolerant, error-correcting storage system
12/15/1988WO1988009967A1 Method for error correction in digitally encoded speech
12/14/1988EP0295164A1 Method of writing synchronization information on a magnetic record carrier
12/14/1988EP0294841A2 Memory control system
12/14/1988EP0294489A1 Optical disc and optical disc unit
12/13/1988US4791643 Single track orthogonal error correction system
12/13/1988US4791623 File management system for use in an optical data storage system
12/13/1988US4791622 Optical data format employing resynchronizable data sectors
12/13/1988US4791512 Index signal detecting system
12/13/1988US4791497 Apparatus for recording and/or reproducing, in successive slant tracks on a record tape, at least an audio signal and an index signal for controlling tape transport
12/08/1988DE3717981A1 Method and circuit arrangement for converting analog signals into binary signals
12/07/1988EP0294287A2 Fault-tolerant, error-correcting storage system and method for storing digital information in such a storage system
12/07/1988EP0293533A2 Method and apparatus employing offset extraction and companding for digitally encoding and decoding high-fidelity audio signals
12/07/1988EP0293489A1 Digital transmission system
12/07/1988EP0293468A1 Distribution of clock indicia for a quasi-constant linear-velocity disk
12/06/1988US4789976 Temperature compensation circuit for a delay circuit utilized in an FM detector
12/06/1988US4789975 Apparatus for recording and/or reproducing data signal on or from disk shaped recording medium at a variably selected constant linear velocity
12/06/1988US4789974 Optical information recording/reproducing apparatus
12/06/1988US4789972 Selectively controlling the erasure in a magneto-optic recording medium
12/06/1988US4789961 Computer memory back-up with automatic tape positioning
12/06/1988US4789911 Information recording and reproducing apparatus
12/06/1988US4789908 Distortion reduction circuit for video playback
12/06/1988US4789906 Video signal recording apparatus
12/06/1988US4789838 Pulse detection circuit using amplitude and time qualification
12/06/1988CA1246231A1 Apparatus for decoding phase encoded data
12/06/1988CA1246210A1 Remapping technique for handling media defects in a disc drive system
11/1988
11/30/1988EP0293096A2 Asynchronous-to-synchronous digital data multiplexer/demultiplexer with asynchronous clock regeneration
11/29/1988US4788685 Apparatus for recording and reproducing data
11/29/1988US4788602 Rotary head type recording and/or reproducing apparatus
11/29/1988US4788601 Video signal reproducing apparatus with H sync discontinuity correction
11/29/1988US4788590 RF converter employing an SAW filter
11/23/1988EP0291693A1 Video apparatus with a scannable record carrier
11/22/1988US4787094 Apparatus for transmitting digital signal
11/22/1988US4786984 Method and apparatus for locating the edge of a magnetic tape
11/17/1988WO1988009031A1 Forming digital data for magnetic tape
11/17/1988EP0291028A2 Reproducing apparatus
11/15/1988US4785361 Method and apparatus for frustrating the unauthorized copying of recorded data
11/15/1988US4785358 Recording apparatus for recording a video signal obtained from a high speed scanning video camera
11/15/1988US4785252 Waveform processing circuit
11/15/1988CA1244950A1 Method and apparatus for encoding and decoding an nrzi digital signal with low dc component and minimum low frequency components
11/15/1988CA1244937A1 Magnetic reproducing apparatus having thin film head for use with perpendicularly magnetized medium
11/09/1988EP0289959A2 Reproduction system capable of reproducing a still image by interrupting a sequence of recorded signals
11/08/1988US4783792 Apparatus for transmitting digital signal
11/08/1988US4783784 Magnetic tape system with write retry means
11/03/1988WO1988008644A1 A low jitter phase-locked loop
11/02/1988EP0289272A2 Method and apparatus for demultiplexing a colour video signal
11/02/1988EP0289080A1 System for subband coding of a digital audio signal
11/02/1988EP0289051A2 Recording system capable of recording a sequence of optimum coded signals on a ROM
11/02/1988EP0289050A2 Interleave sequence method
11/02/1988EP0288989A2 Address generating circuit
11/02/1988EP0288571A1 Apparatus for recording and reproducing data using a disk
11/02/1988CN88102870A System for recording information signal, and record carrier and recording device for use in the system
10/1988
10/26/1988EP0288114A1 System for recording information signal, and record carrier and recording device for use in the system
10/26/1988EP0287637A1 Magnetic disk write precompensation.
10/26/1988EP0287619A1 Control system
10/26/1988EP0287593A1 Substituting soundtrack.
10/25/1988US4780892 Scanning frequency synchronization method and apparatus
10/25/1988US4780866 Method and apparatus combining an information-bearing disk and a disk drive mechanism
10/25/1988US4780844 Data input circuit with digital phase locked loop
10/25/1988US4780808 Control of cache buffer for memory subsystem
10/25/1988US4780772 Apparatus for reproducing digital signals from a digital audio recording medium
10/25/1988US4780771 High density signal recording and reproducing apparatus
10/25/1988CA1243774A1 Pcm signal recording/reproducing apparatus
10/19/1988EP0287376A2 Recording and/or reproducing information signals
10/19/1988EP0287316A2 Recording colour image and audio signals
10/19/1988EP0286727A2 Circuit for producing clock signal for reproducing PCM signal
10/18/1988US4779073 Apparatus for 3B-2T code conversion
10/18/1988US4779072 Channel encoder
10/18/1988CA1243399A1 Signal simulator for magnetic recording head
10/12/1988EP0286452A2 Recorded-information reproducing apparatus
10/12/1988EP0286437A2 Apparatus and method for recording and reproducing a digital signal
10/12/1988EP0286412A2 Apparatus for recording and/or reproducing digital data
10/12/1988EP0286308A1 Information recording method for recording data and directories in a plurality of blocks comprising divided recording areas
10/12/1988EP0286184A1 One-dimensional linear picture transformer
10/11/1988US4777542 Data recording method
10/11/1988US4777538 For stabilizing video image during recorded program changes
10/11/1988US4777537 Signal recording apparatus and method
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