| Patents for G11B 20 - Signal processing not specific to the method of recording or reproducing; Circuits therefor (81,980) |
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| 12/03/1997 | CN1166671A Apparatus and method for reproducing optical diskprint head |
| 12/03/1997 | CN1166670A Transmit method of identification data for servo control and disk player thereof |
| 12/03/1997 | CN1166651A Microprocessor capable of guarding against dishonest copying of audio and video data and image information processing system using the same |
| 12/02/1997 | US5694469 Method and system for disseminating stored programs and data |
| 12/02/1997 | US5694386 Interpolating gain amplifier for information reproducing apparatus |
| 12/02/1997 | US5694383 Decoder/encoder capable of controlling data reading/writing operations to memory in response to first/second clocks, reproducing apparatus equipped with encoder/decoder, and recording apparatus equipped with encoder |
| 12/02/1997 | US5694381 Information data reproducing system, reproducing apparatus, reproducing method, data forming apparatus, and data record medium |
| 12/02/1997 | US5694380 Disc player apparatus having a disc rotational speed controller |
| 12/02/1997 | US5694262 Method and apparatus for transferring data and making on-the-fly correction of errors |
| 12/02/1997 | US5694064 For receiving an input signal |
| 11/27/1997 | WO1997044785A1 Signal recording apparatus for video device using magnetic recording medium |
| 11/27/1997 | WO1997044736A1 Method and apparatus for two-level copy protection |
| 11/27/1997 | WO1997040603A3 Process and device for recording/processing authentic audio data |
| 11/26/1997 | EP0809353A2 Amplifier for cancelling noise between circuit systems |
| 11/26/1997 | EP0809247A2 Constant density recording method and system for headless format in hard disc driver |
| 11/26/1997 | EP0809246A2 Improvements in or relating to data processing |
| 11/26/1997 | EP0809245A2 Improvements in or relating to security systems |
| 11/26/1997 | EP0809244A2 Software copying system |
| 11/26/1997 | EP0809243A2 Optical disk having a large storage capacity |
| 11/26/1997 | EP0809240A2 Optical recording medium |
| 11/26/1997 | EP0809239A2 Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam |
| 11/26/1997 | EP0808541A1 Marking a video and/or audio signal |
| 11/26/1997 | EP0693201A4 Method and apparatus for fingerprinting and authenticating magnetic media |
| 11/26/1997 | EP0532514B1 Failure-tolerant mass storage system |
| 11/26/1997 | EP0434837B1 Method and apparatus for reproduction |
| 11/26/1997 | CN1166226A Multimedia optical disc correspounding to different rating systems of different countries, and method and appts. for production |
| 11/26/1997 | CN1166225A Method of converting a series of M-bit information words to a modulated signal, method of producing a record carrier, coding device, device, recording device, signal, as well as a record carrier |
| 11/26/1997 | CN1166224A Marking a digitally encoded video and/or audio signal |
| 11/26/1997 | CN1166223A Optical disk, optical recorder, optical producing device, encrypted communication system, and authorizing system for use of program |
| 11/26/1997 | CN1166222A Method for overlapping block read events in disk drive |
| 11/26/1997 | CN1166029A 软件复制系统 Software replication system |
| 11/25/1997 | US5692092 Recording and playback system for variable speed playback wherein more a.c. coefficients are allotted to the macroblocks in the central part of an image frame |
| 11/25/1997 | US5692058 Dual audio program system |
| 11/25/1997 | US5691994 Disk drive with fast error correction validation |
| 11/25/1997 | US5691993 Rate 4/5 trellis code for PR4 channels with improved error propagation |
| 11/25/1997 | US5691972 Multimedia optical disc which conforms to the motion picture rating systems in a variety of countries and a reproducing device for said disc |
| 11/25/1997 | US5691966 Recording eight digital audio channels on a single magneto optical disk |
| 11/25/1997 | US5691948 Memory apparatus |
| 11/20/1997 | WO1997043835A1 Read error recovery utilizing ecc and read channel quality indicators |
| 11/20/1997 | WO1997043762A1 A signal processing means |
| 11/20/1997 | WO1997043761A2 Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances |
| 11/20/1997 | WO1997043736A1 Computer system linked by using information in data objects |
| 11/20/1997 | DE19708796A1 Difference determination method between Sub Q code and CD ROM header |
| 11/20/1997 | DE19648821C1 Continuous play device for audio cassette |
| 11/20/1997 | DE19619272A1 Automatic modulation method for electrical signal before transmission or storage |
| 11/19/1997 | EP0808046A2 Digital signal processing apparatus and method |
| 11/19/1997 | EP0807931A2 Copy preventing system for multi-media equipment |
| 11/19/1997 | EP0807930A1 Data recording apparatus, and method, and data reproducing apparatus |
| 11/19/1997 | EP0807929A1 Optical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk production |
| 11/19/1997 | EP0807927A2 Disc reproducing method and apparatus |
| 11/19/1997 | EP0807346A1 Cd-prom |
| 11/19/1997 | EP0807304A1 Time compression/expansion without pitch change |
| 11/19/1997 | EP0636299B1 A method for detecting and removing errors exceeding a specific contrast in digital video signals |
| 11/19/1997 | CN1165379A Unique identifier for optical media |
| 11/18/1997 | US5689732 Apparatus for recording and reproducing data having a single recording and reproducing unit and a plurality of detachable interfaces for connecting to different types of computer ports |
| 11/18/1997 | US5689727 Disk drive with pipelined embedded ECC/EDC controller which provides parallel operand fetching and instruction execution |
| 11/18/1997 | US5689630 Information reproducing apparatus |
| 11/18/1997 | US5689570 Sound reproducing array processor system |
| 11/18/1997 | US5689561 Computer-based trading card system and method |
| 11/18/1997 | US5689559 Copy prevention method and apparatus of a digital magnetic recording/reproducing system |
| 11/18/1997 | US5689532 Reduced complexity EPR4 post-processor for sampled data detection |
| 11/18/1997 | US5689496 Optical recording medium having spiral tracks formed with a turning angle of more than 360° |
| 11/18/1997 | US5689493 A super-resolution optical head with signal corrective circuit |
| 11/18/1997 | US5689491 Optical write/read device and an information recording media |
| 11/18/1997 | US5689488 Optical disc system, optical disc and recording method |
| 11/18/1997 | US5689487 Verify-while-recording device for optical disk recording apparatus |
| 11/18/1997 | US5689486 Optical disc reproducing apparatus |
| 11/18/1997 | US5689479 Magneto-optical recording apparatus |
| 11/18/1997 | US5689477 Method and apparatus for storing and presenting visual and audible information to an individual |
| 11/18/1997 | US5688173 Information storage medium and electronic device using the same |
| 11/18/1997 | CA2175064C System and method for controlling play of multiple audio tracks of a software carrier |
| 11/13/1997 | WO1997042758A1 Multimedia optical disk, reproducing device, and reproducing method capable of superposing sub-video upon main video in well-balanced state irrespective of position of main video on screen |
| 11/13/1997 | WO1997042742A2 Transmission of a digital information signal having a specific first sampling frequency |
| 11/13/1997 | WO1997042593A1 Video transcoding with interim encoding format |
| 11/13/1997 | WO1997042558A2 A device driver for accessing computer files |
| 11/12/1997 | EP0806768A2 Recording medium, optical information reproducing apparatus and seek method |
| 11/12/1997 | EP0806766A1 Track cross signal correction apparatus |
| 11/12/1997 | EP0806042A1 Dual identification for data fields of a disk drive |
| 11/12/1997 | EP0806040A1 Apparatus and method for controlling the frequency at which data is written in a disk drive system |
| 11/12/1997 | EP0582720B1 Disk reproducing apparatus |
| 11/12/1997 | EP0529557B1 Apparatus for preventing computer data destructively read out from storage unit |
| 11/12/1997 | EP0428617B1 Dual deck videocassette recorder system |
| 11/12/1997 | CN1164925A Multimedia optical disk capable of preserving freshness of image content for long time and its reproduction apparatus and method |
| 11/12/1997 | CN1164924A Multimedia optical disk for easily realizing branch reproduction to parental lock section with little amount of control information and reproducing device therefor |
| 11/12/1997 | CN1164923A Multimedia optical disk for which producer coordinates viewing/listening mode including special reproduction at will and reproducing device and reproducing method for the disk |
| 11/12/1997 | CN1164921A Multimedia optical disk which realizes dynamic switching between reproduced outputs, and reproducing apparatus |
| 11/12/1997 | CN1164919A Data recording aparatus, and method, and data reproducing apparatus |
| 11/12/1997 | CN1164916A Multimedia optical disk capable of developing scenes with full unexpectedness on basis of interactive control, its reproduction apparatus and its reproduction method |
| 11/12/1997 | CN1164739A Randomly ordered data block envelope tape format |
| 11/12/1997 | CN1164732A Infomation recording disk with management areas |
| 11/12/1997 | CN1164731A Optical disk device and replacement processing method |
| 11/11/1997 | US5687394 Auxiliary storage apparatus capable of transferring bootstrap programs using variable access sizes |
| 11/11/1997 | US5687276 Magnetic recording and/or reproducing apparatus for detecting first and second attendant data indicative of a recording mode of associated digital information |
| 11/11/1997 | US5687275 Trick play data indentification methods and apparatus for use with digital video recording and playback devices |
| 11/11/1997 | US5687182 Error detection and correction device |
| 11/11/1997 | US5687161 Apparatus and method for reproducing data from disk method for recording data on disk and disk |
| 11/11/1997 | US5687158 Optical disk recording and reproducing apparatus for compressed signals |
| 11/11/1997 | US5687157 Method of recording and reproducing digital audio signal and apparatus thereof |
| 11/11/1997 | US5687150 Apparatus for and method of recording information, and apparatus for recording and reproducing information |
| 11/11/1997 | US5687148 Optical disk having both constant linear and constant angular velocity recording regions and optical disk recording system |