Class 369/30.22 - Correction of error

Subclass of Class 369 - Dynamic information storage or retrieval
Definition: Subject matter including means or steps to eliminate
No. of patents: 33
Last issue date: 05/27/2008

Number	Title	Issue Date
7380160	Apparatus for and method of handling failure in reading motion picture data from storage medium and reproducing the same An apparatus for and method of handling a failure in reading motion picture data from a storage medium and reproducing the same includes a media-type distinguishing unit determining whether a storage medium to be reproduced is a motion picture medium; and a reading ...	05/27/2008
7352667	Optical disc drive with a system behavior detection module An optical disc drive includes a servo system and a system behavior detection module. The system behavior detection module includes a controller and a signal feeding unit coupled to the controller and the servo system. The controller is operable in a detection mode ...	04/01/2008
7277368	Playback method, playback control circuit and playback apparatus for a recording medium Stable playback performance is assured and data loss due to out-of-step synchronization is reduced even when playback signal quality deteriorates due to such cause as a recording medium defect. The playback method applies to a recording medium to which data is recor...	10/02/2007
7248697	Apparatus and method for scrambling and descrambling data wordwise in optical disk system An apparatus and a method for scrambling and descrambling data wordwise in an optical disk system are provided. The apparatus includes a bit storing means which stores at least 15 bits, and a calculating means which calculates first through fifteenth bits of the bit...	07/24/2007
7233667	Record medium, record medium manufacturing device, computer readable record medium on which program is recorded, and data presentation device A record medium comprises an original data obtained by superimposing a presentation target data, to which an error correction encoding is performed and an identification information. ...	06/19/2007
7161877	Method and circuit for generating a tracking error signal using differential phase detection A circuit for generating tracking error signal using differential phase detection, comprising a quadrant photodetector for receiving optical signal and inducting splitting signal A, splitting signal B, splitting signal C and splitting signal D, two adders for genera...	01/09/2007
7006258	Image processing apparatus, control method therefor, and image processing system Conventionally in performing add-on processing of a predetermined code for input image data, a memory for transferring the input image data to an add-on processor and a memory for transferring it from the add-on processor to a subsequent processor cannot be shared. ...	02/28/2006
6999386	Drive, method for reading data, information recording medium reproduction apparatus, and method for reproducing data having reading errors A method for reading data from an information recording medium having a plurality of address regions, includes the steps of: performing a reading operation for all of designated address regions among the plurality of address regions while holding read error informat...	02/14/2006
6982936	Method of compensating for seek errors of pickup assembly Disclosed herewith is a method of compensating for the seek errors of a pickup assembly. The method includes the steps of calculating a target track number to read data stored in an optical disc by transferring a pickup assembly across the optical disc; determining ...	01/03/2006
6977477	Systems, apparatus, and methods for motor control Systems and methods are provided through which the current to a spindle motor of the recording medium of a mass storage device is modulated to avoid anomalies in the operation of mass storage device and reduce power consumption. In the example of a disc drive, the c...	12/20/2005
6959411	Intelligent error checking method and mechanism An intelligent MP3 error check detection method and apparatus. The claimed invention discloses an apparatus and method where all MP3 files are initially assumed to have compatible error checksums. A parameter W is initialized to zero. The parameter W is not constant...	10/25/2005
6748079	Method and system for recording data on and reading data from an optical medium Accordingly, an improved method for recording data on an optical medium is disclosed which includes receiving and encoding a first set of data frames by a CIRC encoder to generate a second set of data frames. A control byte is then added to each of the second set of...	06/08/2004
6691203	Integrated controller to process both optical reads and optical writes of multiple optical media The present invention provides an integrated controller to process both optical reads and optical writes of multiple optical media. The integrated controller includes a host interface; a buffer manager coupled to the host interface; an embedded memory cou...	02/10/2004
6590839	Multitrack disk player and method of read error recovery An error recovery method and an apparatus achieve error recovery when reading errors occur at one or more addresses on a plurality of simultaneously readable tracks, in a multi-track disk reproducing apparatus. The reproducing apparatus with a plurality o...	07/08/2003
6526006	Tracking error signal compensation circuit and tracking error signal compensation method A tracking error signal compensation device for removing an offset of a tracking error signal to be used for a tracking servo control includes: a low pass filter that extracts a direct current component and a low frequency component whose frequency is low...	02/25/2003
6421308	State detecting device and optical disk device For recording data on and reproducing data from an optical disk of a single spiral land/groove configuration, a header detector detects header regions on the optical disk, a PID error detector judges whether the address information read from the header re...	07/16/2002
6351447	Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording medium In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defe...	02/26/2002
6064639	High speed data recording and/or reproducing method and apparatus with increased data sector access speed A header in which an address signal has been recorded is provided on the disc for every predetermined sector interval. Recording data is arranged in an error correction encoding block and the error correcting process is performed. The error correction enc...	05/16/2000
6061313	Optical disk drive having a time code detection device for reliably detecting a time code of a recordable optical disk An optical disk drive includes a first detection unit which detects a first time signal and a first error signal, the first time signal indicating a time code of pregrooves of a recordable optical disk, the first error signal being indicative of an error ...	05/09/2000
5907526	Methods and apparatus for simultaneously reading multiple tracks of an optical storage medium Methods and apparatus are provided for synchronously reading data from multiple tracks of an optical disk using multiple illumination beams. Circuitry is provided for use with a photodetector array to read and buffer data in parallel from the multiple adj...	05/25/1999
5872750	Optical disk, and information recording/reproduction apparatus In an optical disk having a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from said first and second tracks, the first track is formed into a groove-like shape, the second tr...	02/16/1999
5757737	Recording/reproducing data units in successive sectors by N heads using N memory devices Successive bytes of data are recorded in successive sectors on a disk medium by N recording heads. Successive data units, each formed of multiple bytes, are written sequentially into N memory devices, and those N memory devices are sequentially read to su...	05/26/1998
5721816	Adaptive recovery of read and write errors in a disc drive Method and apparatus for optimizing the read/write channel error recovery process in a disc drive. An error recovery table comprising a plurality of sequentially ordered corrective operations is provided so that, upon receipt of an error from the disc dri...	02/24/1998
5621710	CD-ROM Drive and a control method for optimally controlling the spindle motor CD-ROM drive, including a pick-up for detecting recorded data from a CD-ROM, a control signal generation part for generating a acceleration/deceleration control signal, a driving extent control signal, and a guaranteed frame synchronizing signal by proces...	04/15/1997
5535183	Optical disk reproducing device and its seek operation method An optical disk device generating reproduced data based on a reproduced digital signal which is derived by tracking a track on an optical disk with an optical pickup is shown. A bit-frequency-information generation unit measures a bit frequency of the rep...	07/09/1996
5523987	Disc driving apparatus capable of reproducing the track address by forming phase error data using wobble pits peak sum signal A disc driving apparatus is disclosed. The disc driving apparatus is adapted for driving a disc-shaped recording medium of sampled servo system having predetermined servo patterns recorded at predetermined intervals thereon, each of the servo patterns inc...	06/04/1996
5469418	Optical information write/read device and method for writing data A write/read device includes two optical heads for writing data on an optical disk. The two heads are moved simultaneously after data is written in a track, the written data is read and checked for writing errors. This write verify is performed by the two...	11/21/1995
5257248	Information recording apparatus capable of efficiently verifying recording information An apparatus for recording information on a disk-shaped medium with an appropriate amount of information, and allowing immediate verifying of the recorded information. The apparatus includes a unit for recording information of a recording unit on a record...	10/26/1993
5210727	Compact disk players In a compact disk player, a demodulator (2) demodulates signals picked up from a disk, an error detection circuit (8) corrects the demodulated data, and an interpolation circuit (10, 12, 14, 16) interpolates output data from the error detection correction...	05/11/1993
4802152	Compact disc drive apparatus having an interface for transferring data and commands to and from a host controller A drive apparatus for an optical disc read system. An interface is provided to a host controller for reading out data on a compact disc. The read out data is converted from parallel to serial format, and transmitted with a clock stream to the host control...	01/31/1989
4623994	Scanning servo system for optical-disc information reproducing apparatus A scanning servo system, that is, a focusing servo system or a tracking servo system, for an optical-disc information reproducing apparatus includes (a) a light source for generating a light beam to scan a selected track location on an optical-disc wherei...	11/18/1986
4611314	Method for accessing to a rotating record medium and an access control system In an information storage system including a rotating recording medium having a number of information tracks, a head positioning mechanism for switching access position between adjacent tracks and a plurality of buffer memories each capable of storing one...	09/09/1986
4199820	Random access storage apparatus with a movable recording medium In a storage apparatus wherein signals recorded on tracks assigned addresses in advance on a rotary recording medium such as an optical video disk are randomly searched at high speed, a random access storage apparatus is provided in which erroneous search...	04/22/1980

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Class 369/30.22 - Correction of error