| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 01/09/1991 | EP0406291A1 Digital data security system |
| 01/09/1991 | CN1048473A Digital transmission system transmitter and receiver for use in transmission system, and record carrier obtained by means of transmitter in form of recording device |
| 01/09/1991 | CN1048462A Combining small records into a single record block for recording on a record media |
| 01/09/1991 | CN1048461A Recording and reproducing device |
| 01/09/1991 | CN1011185B Nonlinear signal processing apparatus |
| 01/08/1991 | US4984230 Rewritable optical disk with defective-sector substitution arrangement and optical information recording and reproducing system |
| 01/08/1991 | US4984227 Recording data |
| 01/08/1991 | US4984104 Apparatus for recording an information signal at a second part of a given track by sampling and holding a tracking control signal used for tracking at a first part of the given track |
| 01/08/1991 | US4984102 Information signal recording apparatus and apparatus for reproducing the same |
| 01/08/1991 | US4984101 Record medium |
| 01/08/1991 | US4984100 Magnetic disk apparatus |
| 01/08/1991 | US4984099 Apparatus for decoding a transmitted signal |
| 01/08/1991 | US4983965 Demodulation apparatus |
| 01/02/1991 | EP0406189A1 A method for efficient utilization of removable data recording media |
| 01/02/1991 | EP0406188A1 Combining small records into a single record block for recording on a record media |
| 01/02/1991 | EP0406021A2 Disk recording and reproducing device |
| 01/02/1991 | EP0405885A1 Recording device and reproducing device |
| 01/02/1991 | EP0405824A2 Decoding apparatus for digital signals |
| 01/02/1991 | EP0405673A1 Device for buffering data for the duration of cyclically recurrent buffer periods |
| 01/02/1991 | EP0405662A2 Receiver for data transmission system with nonlinearities |
| 01/02/1991 | EP0405610A2 Optical information recording method |
| 01/02/1991 | EP0405491A2 Apparatus for recording and reproducing digital still image signal |
| 01/02/1991 | EP0404918A1 Method of retrieving data carriers from data-carrier archives |
| 01/02/1991 | CN1048279A Recording device for recording optically detectable information pattern on record carrier |
| 01/02/1991 | CN1011111B Apparatus for digital signal playback |
| 01/01/1991 | US4982390 Real time signal recording apparatus for effecting variable signal transfer rate |
| 01/01/1991 | US4982191 Clamping apparatus and gain control apparatus |
| 01/01/1991 | US4982110 Clock generator circuit and a synchronizing signal detection method in a sampled format system and a phase comparator circuit suited for generation of the clock |
| 01/01/1991 | US4982077 Recording format for optical recording medium |
| 01/01/1991 | US4982075 Information recording medium with track group indicators |
| 01/01/1991 | US4982074 Method of recording position information of last track recorded with data in directory area |
| 12/28/1990 | CA2016847A1 Error detection and correction systems for long burst errors |
| 12/27/1990 | EP0404465A2 Apparatus for recording and/or reproducing video and audio signals |
| 12/27/1990 | EP0404251A1 Recording device for recording an optically detectable information pattern on a record carrier |
| 12/27/1990 | EP0404249A1 Method of and device for adjusting recording parameters |
| 12/27/1990 | EP0404247A1 Device for recording information on a record carrier having a radiation sensitive layer |
| 12/27/1990 | CA2019079A1 Decoding apparatus for digital signal |
| 12/25/1990 | US4980878 Method and apparatus for scanning a recording medium for defects |
| 12/25/1990 | US4980782 Software protection and identification system |
| 12/23/1990 | CA2018671A1 Method and circuit for recovering a logic signal from a band limited signal channel |
| 12/19/1990 | EP0403224A2 Method of reading recorded information from information storage medium with tracks |
| 12/19/1990 | EP0402973A1 Digital transmission system, transmitter and receiver for use in the transmission system, and record carrier obtained by means of the transmitter in the form of a recording device |
| 12/19/1990 | EP0402912A2 Disk memory system |
| 12/18/1990 | US4979210 Method and apparatus for protection of signal copy |
| 12/18/1990 | US4979192 Circuit for detecting a synchronizing signal |
| 12/18/1990 | US4979189 Self-timing qualification channel |
| 12/18/1990 | US4979159 Method of recording data onto an optical card having a plurality of tracks containing at least one ID section, error correcting code or directory pointer area and method of reproducing data therefrom |
| 12/18/1990 | US4979054 Disk drive for storing data in run length limited format and method of providing such format |
| 12/18/1990 | US4979052 Digital signal magnetic recording/reproducing apparatus |
| 12/18/1990 | US4978916 Method for magnetically characterizing the recording layer of a magnetic information carrier, and apparatus for performing the method |
| 12/13/1990 | DE4015630A1 Programmable fading operation in camera recorder - using successive fading function scanning adjusting step for program mode storage |
| 12/12/1990 | EP0402180A2 Information recording device |
| 12/12/1990 | EP0402115A2 Error detection and correction device |
| 12/12/1990 | EP0402113A2 VCO frequency control circuit |
| 12/12/1990 | EP0402058A2 Predictive decoding device correcting code errors |
| 12/12/1990 | EP0402002A2 Check discs |
| 12/12/1990 | EP0401855A2 Block error detector |
| 12/12/1990 | EP0401261A1 Synchronous, multiple channel analogue and audio-visual record and playback unit |
| 12/12/1990 | CN1047750A Method and apparatus for recording signals on a record carrier, measurement method and measurement device for use in the recording method and the recording apparatus, and record carrier |
| 12/11/1990 | US4977550 Disc playback apparatus for playback of music and digital data |
| 12/11/1990 | US4977472 Servo address system |
| 12/11/1990 | US4977461 Dropout detecting circuit with one-half wavelength delay |
| 12/11/1990 | US4977455 System and process for VCR scheduling |
| 12/11/1990 | CA1277766C Optical writing and reading method and optical writing and readingapparatus |
| 12/06/1990 | WO1990015407A1 Zone density sector counter |
| 12/06/1990 | CA2060197A1 Zone density sector counter |
| 12/05/1990 | EP0400906A2 Bilateral anti-copying device for video systems |
| 12/05/1990 | EP0400899A2 Apparatus for reading recorded information |
| 12/05/1990 | EP0400810A2 Optical disk reproducing apparatus |
| 12/05/1990 | EP0400726A1 Method and apparatus for recording signals on a record carrier, measurement method and measurement device for use in the recording method and the recording apparatus, and record carrier |
| 12/05/1990 | EP0400678A2 Signal recording/reproducing apparatus |
| 12/05/1990 | EP0400218A2 Recording medium playing apparatus with automatic tonal response setting function |
| 12/05/1990 | EP0215023B1 Magnetic tape cassette having a prerecorded low frequency tone |
| 12/04/1990 | US4975930 Digital phase locked loop |
| 12/04/1990 | US4975915 Data transmission and reception apparatus and method |
| 12/04/1990 | US4975898 Method and apparatus for preventing copying of an optical disk |
| 12/04/1990 | US4975897 Reading circuit for an optical information storing apparatus |
| 12/04/1990 | US4975791 Recording system having head transducers with controlled skew |
| 12/02/1990 | CA2475414A1 Decoder, receiver and method for decoding an encoded digital audio signal |
| 11/29/1990 | WO1990014666A1 Optical disc recording device and optical disc |
| 11/28/1990 | EP0399852A2 Recording/reproducing device |
| 11/28/1990 | EP0399513A1 Pit pattern detecting method |
| 11/28/1990 | EP0398978A1 Public video recording system |
| 11/28/1990 | EP0169910B1 Rotary head type magnetic image recorder/reproducer |
| 11/28/1990 | CN1010624B Readout system of data-storage |
| 11/27/1990 | USRE33462 Method and apparatus for transmitting digital data |
| 11/27/1990 | US4974221 Method and apparatus for reproducing information by varying a sensitivity of a phase-locked loop in accordance with a detection state of a reproduced signal |
| 11/27/1990 | US4973915 Feed forward differential equalizer for narrowing the signal pulses of magnetic heads |
| 11/27/1990 | CA1277028C Optical disc and disc drive apparatus for writing/reading data into/from the disc |
| 11/26/1990 | CA2016952A1 Bilateral anti-copying device for video systems |
| 11/22/1990 | EP0398737A2 Digital signal reproducing apparatus |
| 11/22/1990 | EP0398618A2 Device for reproducing product code block data |
| 11/22/1990 | EP0398254A2 FM demodulator |
| 11/22/1990 | EP0398174A2 Method for incorporating window strobe in a data synchronizer |
| 11/22/1990 | EP0398090A2 Video signal processor for removing high frequency noise component |
| 11/22/1990 | EP0397766A1 Correction of long term drift and short term fluctuating corruption of a signal. |
| 11/22/1990 | DE4015755A1 System for error correction of magnetically recorded data - uses buffer memory and multiple levels of error detection and correction |
| 11/22/1990 | DE4015626A1 Digital video recording and playback system - uses digital audio tape with memories and control circuitry to store full or part picture frames |
| 11/22/1990 | DE4011052A1 Datenspeicherplattengeraet und verfahren zum speichern von daten Datenspeicherplattengeraet and method for storing data |
| 11/21/1990 | CN1047159A Information recording system, and recording device and record carrier for use in such an information recording system |