Patents
Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980)
01/1988
01/26/1988US4722010 Read circuit for floppy disk drive
01/26/1988US4722009 Tone restoring apparatus
01/26/1988CA1232067A1 Integrated floppy disk drive controller
01/20/1988EP0253215A1 Method and apparatus for processing pulses of a signal which is distorted during transmission
01/20/1988EP0253192A2 Magnetic recording and reproducing device
01/20/1988CN87200993U Large-scale storing and searching device for colour image and pattern
01/20/1988CN87104485A 信息记录和重现装置 Information recording and reproducing apparatus
01/19/1988US4720751 Video recording apparatus which records chrominance information at a lower frequency band coincident with the luminance signal frequency band
01/19/1988CA1231778A1 Sector mark decoder for an optical recorder
01/19/1988CA1231777A1 Write protection and data detection using differential detection
01/12/1988US4719642 Error detection and concealment using predicted signal values
01/12/1988US4719612 Method of detecting defects on an optical record medium and a device for carrying out the method
01/12/1988US4719523 Synchronizing signal detecting circuit
01/12/1988US4719522 Method of magnetic recording
01/12/1988US4719521 PCM recording and reproducing apparatus
01/12/1988US4719519 Component video signal magnetic recording and reproducing apparatus including means for expanding and compressing luminance and color difference signals
01/07/1988EP0251722A2 Digital filter for time-axis error correction loop of video disk player
01/07/1988EP0251666A2 Apparatus for recording and reproducing information
01/07/1988EP0251646A2 Audio production console
01/07/1988EP0251277A2 A recording/reproducing system for a magnetic recording medium
01/07/1988EP0251276A2 A recording/reproducing system for a magnetic recording medium
01/07/1988EP0251274A2 A recording/reproducing system for a magnetic recording medium
01/07/1988EP0250729A1 Apparatus for transmitting a data stream
01/07/1988DE3622532A1 Process and arrangement for reproducing digital data
01/05/1988US4718067 Device for correcting and concealing errors in a data stream, and video and/or audio reproduction apparatus comprising such a device
01/05/1988US4717973 Recorded information verification system
01/05/1988US4717972 Process for storing digitally coded video synchronous sound signals through time compression by duplicating sound data during recordation
12/1987
12/29/1987US4716567 Method of transmitting digital data in which error detection codes are dispersed using alternate delay times
12/29/1987US4716566 Error correcting system
12/29/1987US4716565 Error concealing system for digital data
12/29/1987US4716558 Record disc addressing apparatus
12/29/1987US4716475 Read post compensator circuit for magnetic record/reproduce device
12/29/1987US4716472 Variable speed replay of digital audio with constant output sampling rate
12/29/1987CA1230828A1 Digital graphic equalizer
12/23/1987EP0250049A1 Channel encoder
12/23/1987EP0249781A2 Compact disc (CD) player
12/22/1987US4714968 Digital apparatus for data recovery system
12/22/1987US4714967 Binarily related variable rate recorder
12/16/1987EP0249462A1 Recording disk reproducing apparatus
12/16/1987EP0249291A1 Device for regenerating a binary digital signal, for example a bi-phase encoded signal
12/16/1987EP0249106A2 Asymmetric rll coding
12/16/1987EP0249091A2 Parity spreading to enhance storage access
12/16/1987EP0249069A1 Method and device for the conversion of a digital signal
12/16/1987EP0249064A2 Disk drive optimized channel circuit
12/15/1987US4713802 Digital signal reproducing circuit
12/15/1987CA1230419A1 Toon code for optical recording
12/09/1987EP0248713A1 Background noise reduction device in an electroacoustic line-up
12/09/1987EP0248536A2 Methods of and apparatus for seeking a target address on a record medium
12/09/1987EP0248478A1 Sequential buffer device
12/09/1987EP0248206A2 Error communication decoder for direct access storage device
12/08/1987CA1230178A1 Disc playback apparatus
12/08/1987CA1230061A1 Dictation recording and transcribing system with variable playback sequence
12/02/1987EP0247441A1 Optical information recording/reproducing tape, process for production thereof, and recording/reproducing method therefor
12/02/1987EP0247274A2 Detection of the presence of an incorrect removable storage medium
12/02/1987CN87103190A Synchronizing method for digital apparatus
12/01/1987US4710923 Control system for deinterleaving memories in digital audio reproducing apparatus
12/01/1987US4710826 Apparatus with liquid crystal display panel, for recording/playing back television signal by utilizing digital audio tape recorder system
12/01/1987CA1229909A1 Digital audio scrambling system with error conditioning
12/01/1987CA1229799A1 Apparatus for reducing noise in audio signals
11/1987
11/25/1987EP0246883A2 Apparatus for reproducing digital data
11/25/1987EP0246661A2 Apparatus for recording information signals
11/25/1987EP0246485A2 Rotating storage device track format emulation
11/25/1987EP0138981B1 Improved error protection of linearly coded digital signals
11/24/1987US4709367 Method and apparatus for distinguishing between diskettes in a diskette drive
11/24/1987US4709278 Method and apparatus for producing and selectively equalizing a temporal relationship between series of digital signals
11/24/1987US4709276 Time base corrector
11/24/1987CA1229679A1 Single revolution disk sector formatter
11/24/1987CA1229541A1 Pressure regulator
11/19/1987EP0245874A2 Information recording and reproducing apparatus
11/19/1987EP0245449A1 Binarily related variable rate recorder
11/17/1987US4707842 Apparatus and method for acquiring data and clock pulses from asynchronous data signals
11/17/1987US4707818 Method and apparatus for recording digitized information on a disc
11/17/1987US4707805 Data processing circuit for digital audio system
11/17/1987US4707733 Information signal recording disc comprising a connected region formed between parallel program recorded and single program recorded regions, and reproducing apparatus therefor
11/11/1987EP0245037A2 Signal identification
11/11/1987EP0244665A2 Apparatus for, and a method of, obtaining a measure of data detection error
11/11/1987EP0116544B1 Management of defects in storage media
11/11/1987EP0113765B1 Digital clocking and detection system for a digital storage system
11/11/1987CN87102451A Sound signal synchronized driving device
11/10/1987US4706293 Circuitry for characterizing speech for tamper protected recording
11/10/1987US4706282 Decoder for a recorder-decoder system
11/10/1987US4706250 Method and apparatus for correcting multibyte errors having improved two-level code structure
11/10/1987US4706236 Slice level corrector
11/10/1987US4706136 Method for controlling a magnetic disk memory
11/10/1987US4706134 Playback unit for still pictures with sound
11/10/1987US4706132 Video signal processing system
11/10/1987CA1229173A1 Mass storage disk drive defective media handling
11/10/1987CA1229170A1 Decoding device for a stream of code symbols which are word-wise protected by a double reed-solomon code
11/10/1987CA1229169A1 Fast decoder and encoder for reed-solomon codes
11/10/1987CA1229165A1 Direct read after write
11/10/1987CA1229164A1 High density codes for optical recording
11/05/1987WO1987006785A1 Apparatus useful in channel equalization adjustment
11/05/1987WO1987006783A1 Method and device for recording and reading of numerical sound information signals
11/04/1987EP0244002A1 Method of transmitting update information for a stationary video picture
11/04/1987EP0243729A2 Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
11/04/1987EP0243503A1 Data recording/regenerating device
11/03/1987US4704711 Process and device for regenerating the phase of synchronizing signals in a data carrier optical write-read apparatus
11/03/1987US4704642 Noise reduction circuit for reducing pulse noise in audio signal reproduced from a recording medium
11/03/1987US4704641 Recovery of stored data from mutilated tape data blocks
11/03/1987US4704640 Method and apparatus for recording PCM signal