| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 08/07/1990 | US4947367 System for converting digital data from magnetic tape format apparatus and method for converting a sequentially accessible magnetic tape data format to directly accessible write-once disk data format to worm optical disk format |
| 08/07/1990 | US4947271 Multi-channel recording apparatus |
| 08/01/1990 | EP0379613A1 Audio encoder for use with more than one decoder each having different characteristics |
| 08/01/1990 | EP0379585A1 Recordable optical disc |
| 08/01/1990 | EP0227530B1 Method for recording with updating and for the reproduction of data on a non-erasable sectorial record carrier |
| 07/31/1990 | US4945538 Method and apparatus for processing sample values in a coded signal processing channel |
| 07/31/1990 | CA1272297A1 Self-testing peripheral-controller system |
| 07/25/1990 | EP0379444A2 Audio after recording apparatus |
| 07/25/1990 | EP0379222A1 Data recording/reproducing apparatus |
| 07/25/1990 | EP0379210A2 Apparatus for reducing noise in high-frequency band |
| 07/24/1990 | US4943964 PCM signal reproducing device |
| 07/24/1990 | US4943865 Method and system for recording standard pulse code modulated serial data using video signal recorders |
| 07/20/1990 | CA2007362A1 Audio after recording apparatus |
| 07/18/1990 | EP0378250A2 Method and apparatus for editing information data on slant tracks on a magnetic tape |
| 07/18/1990 | EP0378222A1 Magnetic recording medium and method of magnetically recording and reading data |
| 07/18/1990 | EP0243503B1 Data recording/regenerating device |
| 07/18/1990 | EP0144352B1 Sequence versatile video system |
| 07/17/1990 | US4942609 Electronic flying integrity tester for disk drives |
| 07/17/1990 | US4942579 High-speed, high-capacity, fault-tolerant error-correcting storage system |
| 07/17/1990 | US4942488 Video theater system |
| 07/17/1990 | US4942486 Recording disk having read-only recording area and writable recording area and a driving apparatus therefor |
| 07/17/1990 | US4942485 Apparatus capable of data reproduction from digital tape cassettes or like storage media employing two different recording methods |
| 07/17/1990 | US4942476 Recording system for recording on a ROM image signal information which has been subjected to efficient redundancy coding |
| 07/17/1990 | US4942370 PLL circuit with band width varying in accordance with the frequency of an input signal |
| 07/17/1990 | CA1271846A1 Method of encoding n-bit information words into m-bit code words, apparatus for carrying out said method, method of decoding m-bit code words into n-bit information words, andapparatus for carrying out said method |
| 07/11/1990 | CN1043816A Processing circuit for signal |
| 07/11/1990 | CN1008780B Method and apparatus for reproducing signals |
| 07/10/1990 | US4941139 Checking media operations and recording during optical recording |
| 07/04/1990 | EP0376354A2 Method for the recording and reproduction of an analog and a digital optical soundtrack |
| 07/04/1990 | EP0376217A2 Data recording/reproducing apparatus |
| 07/03/1990 | US4939714 Method for fading in and out reproduced digitally recorded data |
| 07/03/1990 | US4939598 Managing data storage space on large capacity record media |
| 06/28/1990 | WO1990007182A1 Method of retrieving data carriers from data-carrier archives |
| 06/28/1990 | DE3941772A1 Magnetplatten-antriebsvorrichtung A magnetic disk driving device |
| 06/28/1990 | DE3843216A1 Verfahren zum bereitstellen von datentraegern in automatischen datentraegerarchiven A method for providing of data medium in automatic datentraegerarchiven |
| 06/27/1990 | EP0375342A2 Data recording/reproducing apparatus using a recording disk |
| 06/27/1990 | EP0374907A2 Method for recording and/or reproducing a signal |
| 06/27/1990 | EP0374794A2 Digital transmitting/receiving apparatus using buffer memory to eliminated effects of jitter |
| 06/26/1990 | US4937843 Digital data block synchronizer |
| 06/26/1990 | US4937807 System for encoding sound recordings for high-density storage and high-speed transfers |
| 06/26/1990 | US4937805 Information recording medium and method of inhibiting reproduction of blank areas |
| 06/26/1990 | US4937804 Apparatus for recording data into optical recording medium |
| 06/26/1990 | US4937800 Method of recording using selective-erasure directions for magnetooptic record members |
| 06/26/1990 | US4937687 Memory unit capable of detecting error in regenerated data from a memory medium |
| 06/26/1990 | US4937686 Method and apparatus for PCM recording and reproducing an audio signal having an asynchronous relation between the sampling frequency for the audio signal and the rotation frequency of a rotary head scanner |
| 06/26/1990 | US4937679 Dual deck video recording apparatus having enhanced copy protection and method for providing enhanced copy protection to such a recording apparatus |
| 06/26/1990 | CA1270944A1 Apparatus for reproducing a digital signal |
| 06/21/1990 | DE3941166A1 Video disc player with line memory selectively - uses memory as noise suppressor or sync. converter |
| 06/20/1990 | EP0374129A2 Image information recording apparatus |
| 06/20/1990 | EP0373895A2 Magnetic recording and reproducing apparatus and method of recording and reproducing |
| 06/20/1990 | EP0373764A2 Correction of random and burst errors |
| 06/20/1990 | EP0373710A1 Device for recording an audio and a video signal |
| 06/19/1990 | US4935941 Multiple frequency data recovery system |
| 06/19/1990 | US4935917 Memory disk having some capacity recording areas on a spiral track |
| 06/19/1990 | US4935914 Optical recording and reproducing apparatus for verifying correct writing of information signal |
| 06/19/1990 | US4935825 Cylinder defect management system for data storage system |
| 06/19/1990 | US4935824 Information recording apparatus |
| 06/19/1990 | US4934823 Staging method and system in electronic file apparatus |
| 06/16/1990 | CA2005334A1 Device for recording an audio and a video signal |
| 06/14/1990 | WO1990006579A2 Improved disc unit |
| 06/14/1990 | WO1990006578A1 Process for recovering a coded signal sequence |
| 06/13/1990 | EP0373074A2 Frequency demodulating circuit for video reproducing apparatus |
| 06/13/1990 | EP0372601A1 Coder for incorporating extra information in a digital audio signal having a predetermined format, decoder for extracting such extra information from a digital signal, device for recording a digital signal on a record carrier, comprising such a coder, and record carrier obtained by means of such a device |
| 06/12/1990 | US4933959 Tracking bit synchronizer |
| 06/12/1990 | US4933939 Method and apparatus for error measurement and reduction in a mass storage device memory system |
| 06/12/1990 | US4933783 AGC circuit with transient response control in a magnetic disk unit |
| 06/12/1990 | US4933782 Digital phase lock device |
| 06/12/1990 | CA1270333A1 Parity spreading to enhance storge access |
| 06/07/1990 | DE3839749A1 Verfahren zum wiedergewinnen einer kodierten signalfolge A method for regaining a coded signal sequence |
| 06/06/1990 | EP0371961A2 Magnetic recording/reproduction apparatus |
| 06/06/1990 | EP0371717A2 Apparatus for reproducing digital audio and video data |
| 06/06/1990 | EP0371456A2 Magnetic tape recording/reproducing device |
| 06/06/1990 | EP0371035A1 Method for error correction in digitally encoded speech |
| 06/06/1990 | EP0371034A1 Method and apparatus for data buffer management |
| 06/06/1990 | CN1042791A Full-dynamic complementary type noise-reduction system |
| 06/06/1990 | CN1008310B Magnetic recording playback unit |
| 06/05/1990 | US4932018 Integrated circuit for generating indexing data in a CD player |
| 06/05/1990 | US4932017 Method and apparatus for reading and writing information on a recording medium |
| 06/05/1990 | US4932016 Apparatus and method of recording and reproducing data using a disk |
| 06/05/1990 | US4932014 Data recording and reading system |
| 06/05/1990 | US4931884 Skew compensation circuit effectively operated during readout in a reverse sense |
| 05/31/1990 | WO1990005975A1 Self-compensating high density data recording and detection scheme |
| 05/31/1990 | DE3938976A1 Magnetic disc memory controller - has error detection and correction using microprocessor controlled system |
| 05/31/1990 | DE3840291A1 Process and circuit arrangement for reproducing data signals |
| 05/31/1990 | DE3840290A1 Process for recording and/or reproducing data signals |
| 05/30/1990 | EP0371006A2 Magnetic recording apparatus |
| 05/30/1990 | EP0370772A2 Digital signal reproducing apparatus |
| 05/30/1990 | EP0370631A2 Method and apparatus for tape speed override operation when recovering helical audio |
| 05/30/1990 | EP0370422A2 Method and apparatus for error measurement and reduction in a mass storage device memory system |
| 05/30/1990 | EP0370113A1 Optical disc device and reproduction of its clock signal |
| 05/29/1990 | US4930115 Method of and device for recording information, record carrier, and device for reading the recorded information |
| 05/29/1990 | US4930031 Apparatus for recording and reproducing digital signals using a helical scan |
| 05/29/1990 | US4930027 Method and apparatus for tape speed override operation when recovering helical audio |
| 05/29/1990 | US4929947 Constant width pulse distribution in a digital to analog converter for serial digital data |
| 05/29/1990 | US4929946 Adaptive data compression apparatus including run length encoding for a tape drive system |
| 05/29/1990 | US4929918 Setting and dynamically adjusting VCO free-running frequency at system level |
| 05/29/1990 | US4929917 Phase-locked loop circuit |
| 05/29/1990 | US4929849 Noise suppression in recovery of clock from NRZ data |
| 05/29/1990 | CA1269753A1 Method and means for parking read/write heads in a disc drive using the back- emf of the spindle motor to operate a stepper motor |
| 05/23/1990 | EP0369962A2 Method for processing signals in a channel |