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9105281 Servo processor receiving photodetector signals  
A servo processor for an optical disk drive is provided that includes: an analog-to-digital converter for converting versions of photodetector output signals into digital signals; and a digital...
8937854 Servo processor receiving photodetector signals  
A focus servo system for an optical disk drive includes an optical pick-up unit comprising at least one photodetector. At least one analog to digital converter is configured to digitize signals...
8873355 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Servo processor receiving photodetector signals
 
A servo processor for an optical disk drive is provided that includes: an analog-to-digital converter for converting versions of photodetector output signals into digital signals; and a digital...
8416651 Servo control using digital signal processing for optical disk drive  
A servo processor for an optical disk drive is provided that includes: an analog-to-digital converter for converting versions of photodetector output signals into digital signals; and a digital...
8203915 Optical disc reader  
An optical disc reader comprising a controller that controls a read operation to read data recorded on an optical disc and a counter that counts the number of zero crossings in a tracking error...
8139455 Information storage medium and method and apparatus for recording/reproducing data on/from the same  
An apparatus for recording data on an information storage medium including a plurality of recording layers, each having a user data area, on which data is recordable by a pickup. Data is recorded...
8059499 Drive signal generating apparatus and drawing apparatus  
Provided is a drive signal generating apparatus including: an arithmetic section that calculates an approximate expression to approximate variations of multiple detected values each representing...
8027231 Information recording apparatus and method, information reproducing apparatus and method, and computer program  
An information recording apparatus (1) is provided with: a first judging device (191) for judging whether or not a tracking error signal is greater than or equal to a first threshold value; a...
7986349 Recording device, reproducing device, image file generating method, and display controlling method  
A recording device including: a recorder recording data onto a recording medium on which tracks as units of audio data are grouped and managed by management information; and a controller...
7957228 Information recording device and method, and computer program  
An information recording apparatus (1) is provided with: a first judging device (191) for judging whether or not a tracking error signal is greater than or equal to a first threshold value; a...
7885148 Disc processing apparatus  
In a disc processing apparatus capable of automatically carrying out processing work such as recording information on a plurality of optical discs and printing label surfaces on those optical...
7839729 Optical drive servo with a servo processor receiving photodetector signals  
An optical disk drive is provided that includes: a plurality of photodetectors for receiving reflected light from an optical disk, each photodetector providing a photodetector output signal; an...
7821886 Method and apparatus for controlling a disc seek operation based on a detected abnormality  
An optical disc device includes an optical pickup for irradiating optical discs with laser and detecting light reflected by the disc to generate received light signals, optical pickup driving...
7774797 Playback control methods and arrangements for a DVD player  
In accordance with certain aspects of the present invention, enhancements have been developed to further extend the performance of a generic DVD navigator. The methods and arrangements herein...
7760590 Data recording method, data recording apparatus, and data recording program  
A data recording method is disclosed which includes the steps of: firstly recording audio data onto a temporary storage medium following retrieval of the audio data from an external storage medium...
7602686 Information recording medium, method for simultaneous recording and reproduction, and information recording and reproduction apparatus  
A simultaneous recording and reproduction method for recording a first real time data in an information recording medium while reproducing a second real time data recorded in the information...
7315492 Header mask signal generating track jump method for a recording medium  
A track jump method for an optical recording/reproducing medium is provided. In the track jump method, once a track jump command is input, a track jump operation is held until a falling edge of a...
7251201 Method of searching new writable address for optical recordable medium  
A method of searching a new writable address (NWA) for an optical recordable medium includes providing an optical pickup head and setting a first search starting point thereof; determining if NWA...
7248541 Optical disk device and access method for optical disk device  
An optical disk device has a recording information management portion which detects a distribution of a recorded region R and an unrecorded region M based on reflection light received by an...
7213752 Method of preventing TOC reading error in a multi-session disc  
A method for preventing a TOC reading error in a multi-session disc includes determining a range of absolute time of a specific session, when a plurality of Q codes, each of which has a value in a...
7177857 Apparatus and method for creating distribution content  
A distribution content provided with conditions that are only effective to part of a content body is created. On a time axis, a section of a content body is specified. Management data is then...
7173886 Track jump method for dual-layered optical disk reading device  
A method is disclosed for jumping tracks on a double-layer optical disk from a first address A on a first data layer to a target address D on a second data layer. According to the method, the...
7075881 Signal recording/playback apparatus, and recording compensation method and playback method used therefor  
A signal recording/playback apparatus includes a recording data converter. The recording data converter converts on a data pattern having a large influence on adjacent tracks on an optical disk,...
7075862 Recording apparatus for optical recording medium  
A recording apparatus for a write-once and/or re-recordable optical recording medium includes a discriminator for discriminating a recording position information from the optical recording medium;...
7065007 Method and a playback device for performing a track slip  
A method for performing a track skip and a playback device for optical storage disks enable an accelerated track skip in the case of a non-moving storage disk in which a time is determined for the...
7012861 Track jump method for a recording medium  
A track jump method for an optical recording/reproducing medium is provided. In the track jump method, once a track jump command is input, a track jump operation is held until a falling edge of a...
6985415 Offset setting system and method for seeking control  
The invention is an offset setting system for an optical reading/writing apparatus having an optical pickup head reading/writing digital data under a predetermined velocity on an optical storage...
6982935 Pause control for a media player with a movable pickup  
A method and apparatus for suspending the operation of a rotating optical media player that uses simplified and efficient logic circuitry is described. When an operator initiates a pause...
6813224 Method and apparatus for reading and/or writing a data disk  
A method and an apparatus for reading and/or writing data on a disk (1) storing data in a continuous spiral form (2). The data is simultaneously read from or written to N tracks (4-8, 12-20) by N...
6657947 Information recording medium and error detecting method  
An information recording medium has such error detecting codes that the distance between the codes of adjacent tracks of the medium is always 1. The bits E1-Em of the detecting codes, which are...
6654317 Method and apparatus for reproducing information  
A method for reproducing information, comprising the steps of: reading compressed audio data from an information recording medium in which the compressed audio data is recorded in a frame unit;...
6633516 ZCAV optical and method for accessing thereof  
Pieces of address information are recorded on an optical disc such that they are successively continuous addresses within each zone but discontinuous at a beginning of a zone next to the previous...
6628575 Track jump method for ZCAV system and storage apparatus employing ZCAV system  
A storage apparatus has a function of jumping to an arbitrary track on a recording medium in response to a track jump request when making access to the recording medium, where the recording medium...
6542446 Optical disc, and optical disc accessing apparatus capable of securing pickup to base  
A portable optical disc apparatus made into a slim-type apparatus and an optical disc adapted for the portable optical disc apparatus are disclosed. In the portable optical disc apparatus, a...
6535466 Apparatus and method for accessing data tracks on an optical disk  
The method and apparatus for accessing data tracks calculate a reproduction speed of a target location based on a current rotation speed, adjust the speed of a data reading clock to the calculated...
6493292 Device for scanning an information carrier and method of operating such a device  
A device according to the invention is suitable for scanning an information carrier with tracks around an axis. The device has means for transferring information to/from a scanning spot on the...
6487144 DISK RECORDING MEDIUM INCLUDING DATA PRE-FORMATTED-DATA-RECORDED HEADER HAVING FIRST AND SECOND IDENTICAL ADDRESS NUMBERS RADIALLY DISPLACED FROM EACH OTHER ON OPPOSITE SIDES OF GROOVE OR LAND TRACK CENTER LINE, AND DISK DRIVE UNIT FOR USE WITH THE RECORDING MEDIUM  
A disk recording medium has reliability of address reading which is maintained equivalently to the conventional disk recording medium by recording a first address and a second address that are...
6430120 Method and apparatus for providing a resume function for a disc player  
A compact disc player includes an optical pickup supported by a carriage and a microprocessor for controlling the movement of a coarse actuator and a fine actuator. The coarse actuator controls...
6430119 Optical disk drive apparatus capable of searching an optimum target position  
An optical disk apparatus includes a converging section for converging a light beam toward an information carrier; a moving section for moving the light beam converged by the converging section in...
6385144 Storage device with means for efficiently positioning a head on a disk including guard areas lacking position information  
A storage device includes a disk medium having tracks in a plurality of guard areas which do not have ID information. Control means controls the head driving means by preventing positioning of the...
6298030 Memory control and reproducing and/or recording apparatus for storage and access of memory location  
In a memory control device for controlling the write-in/read-out operation for a memory of a recording/reproducing apparatus, a sector data storing area and an additive area are set in each...
6243331 Method and apparatus for performing address interpolation on optical disk  
The demodulated signal from the optical disk, containing a plurality of addresses is supplied to the address decoder which sets error detection flags when address decoding fails. If all addresses...
6118737 Device for reproducing encoded data with a low reproduction error rate  
A device to reproduce data stored on a recording medium 1 in sectors 14, each sector containing an address area 15 and a data area 16 being encoded in a different way. Address areas are decoded...
6014350 Information reproducing or recording apparatus provided with memory for storing data, and information reproducing or recording method using the same apparatus  
When information is reproduced from a recording medium having a plurality of tracks with respective addresses, a head is moved relative to the recording medium in order to let the head make access...
5991243 Data playback device to control a laser illuminating position by comparing phase of a laser drive signal and a laser tracking error detection signal  
A data playback device includes a laser to produce light to illuminate a disk form of data recording medium and to playback data stored on the disk, the data being recorded on the disk in a first...
5966353 Optical storage device made thinner by substituting electrical means for capabilities of sensors  
There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to...
5953297 Disk-shaped recording medium and disk recording or reproducing device  
A disk-shaped recording medium has a groove only one of whose side-walls wobbles or deviates in radial directions of the disk in order to prerecord first address information. In addition, the disk...
5878019 Record carrier having at least two information volumes  
A record carrier having at least two information volumes recorded thereon. The first volume includes control information for use in searching for information included in that volume. In one...
5852522 Data recording apparatus for fast detection of servo sectors and correction of track address using a divided gray code and a parity bit  
A servo sector forming method for fast detection and corresponding track address correcting method. The track address correcting method for a disk driving/recording apparatus uses as a recording...
5777307 Optical information recording with preformatted synchronization signals and information recording and reproducing method  
Each information recording track has pre-formatted fore and rear header sections containing address information identifying the track, which permit each of the recording tracks to be accessed from...

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