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Match Document Document Title
US20080159092 Medium storage device, position demodulation device and position demodulation method  
A first and second phase patterns of which phases are the same and a third and fourth phase patterns of which phases are opposite of the first and second phase patterns and of which phases are...
US20080232206 TRACK DETERMINATION  
A light beam is scanned on a track of a recording medium, the track having a first track region and a second track region, each track region having a physical property that has recurring...
US20060203631 Land/groove track and pickup head movement direction detection  
A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A...
US20050063293 Optical disk with tracking grooves similar to blazed grating  
The proposed the multilayer optical disk with slant tracking grooves, which are similar to the blazed diffraction grating grooves. The different incline of the grooves in the neighbor layers of...
US20120127841 PICKUP DEVICE AND OPTICAL DISC DRIVE ADOPTING THE SAME  
Provided are a single beam optical pickup device and a disc drive including the optical pickup device. The optical pickup device includes a light controlling device that prevents or limits stray...
US20050237879 Optical disk device, loop gain setting method, and loop gain setting program  
An optical disk device is disclosed that includes loop gain adjustment means for finding the first tracking loop gain of a first region, and loop gain estimation means for estimating the second...
US20050018555 Disc-shaped optical recording medium and reproduction limit method thereof  
A disk type optical recording medium that can limit the reproduction by a disk drive connected to a computer without drastically changing the specifications of recorded information on the medium...
US20050117493 Optical tape, optical tape cartridge, optical tape drive, and method for recording data on optical tape  
Disclosed is an optical tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The optical tape includes servo...
US20070206453 Multilevel nano-structure optical media with oriented tracking marks  
An optical data/information storage medium comprises a disk-shaped substrate with a data/information encoded surface having a plurality of concentric, radially spaced-apart data tracks formed...
US20070247984 Optical Record Carrier and Optical Scanning Device  
To increase the information density of a satisfactorily readable information structure of a record carrier (2), the rearside (4) of the record carrier can be provided with means (82,84;86) for...
US20050237876 Systems and methods for providing information stored on an audio storage medium  
A system and method for providing information stored on an audio storage medium are provided. Predetermined information including song title information stored on an audio storage medium is...
US20070008838 Disc driving apparatus and information readout method  
A disc driving apparatus and an information readout method according to the present invention realize optimum servo control of a readout unit in reading out the information from a recording medium...
US20070121442 Tracking control method and optical disk drive  
A tracking control method controls an optical disk drive to access an optical disk having a plurality of groove tracks and land tracks, which are alternately interlaced with each other. The...
US20060092799 Method for reading burst cutting area (BCA) data from optical disc and an optical disc apparatus  
Disclosed are a method for reading data recorded on a burst cutting area (BCA) of an optical disc and an optical disc apparatus applying the method. The method comprises the steps of calculating a...
US20050047287 Focus control  
A method of focus control is disclosed. In a passing action, a light source beam is passed over a reflectivity change on a storage media and on to a leading photo sensor and a trailing photo...
US20050213442 Data recording medium, recording method and recorder, reproducing method and reproducer, and data transmitting method and transmitter  
PCM audio data is recoded in a first session P1 as a first region on the inner periphery side of an optical disc Ma. Living body information is recorded in a second session P2 as a second region...
US20070297298 OPTICAL DISK RECORDING DEVICE  
An optical disk recording device that detects a shift of the recording position with respect to an optical disk, has a pre-pit distribution detecting circuit that detects the distribution of...
US20070280066 APPARATUS FOR CONTROLING SERVO SIGNAL GAINS OF AN OPTICAL DISC DRIVE AND METHOD OF SAME  
The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the...
US20090225637 METHOD FOR IDENTIFYING TYPE OF OPTICAL DISK  
A method for identifying a type of an optical disk includes the steps of: turning on a laser diode of an optical pickup and focusing light emitted from the laser diode on the optical disk; moving...
US20080285396 Method and Apparatus of Formatting a Three Dimensional Optical Information Carrier  
A method of formatting at least one optical information carrier is provided. The method is aimed at creating a plurality of formatting marks that are to be sequentially addressed when reading...
US20080232205 Recording Type Optical Disc Medium and Optical Disc Device for the Same  
An optical disc medium (10) is provided with a data recording area (12) having the spiral recording track (11) and a lead-in area (13) composed of an embossed pit. In the lead-in area (13),...
US20070064553 Method and device for reading angular multiplexed pits  
The present invention relates to a method and a device for reading angular multiplexed pits from optical recording media 8, and to an apparatus for reading from optical recording media using such...
US20070165503 APPARATUS AND METHOD FOR IDENTIFYING OPTICAL DISC TYPE  
A method of identifying a type of a disc includes steps of: obtaining a first address of a first position on the disc; moving a pick-up unit to a second position of the disc; obtaining a second...
US20110170386 OPTICAL DISC DRIVE  
An optical disc drive according to the present invention includes an optical pickup and a writing control section for instructing the optical pickup to record a mark, representing the information...
US20050030845 Focus control method of optical pick-up system and apparatus thereof  
Disclosed is a focus control method of an optical pick-up system and an apparatus thereof capable of finely recording/reproducing data by focusing a laser beam on an optical disc accurately even...
US20080137494 Holographic Recording Medium and Pickup For This Medium  
The present invention relates to a holographic recording medium, adapted to store additional information for the recorded holograms, and to a holographic pickup for a holographic storage system...
US20070121443 Optical disc recording/reproducing apparatus and a focus-servo method thereof  
In a focus-servo control method within an optical disc recording/reproducing apparatus, for recording or reproducing information onto/from an optical information recording medium having a track...
US20050201222 Driving method of flexible recording disc  
An object of the invention is to provide an extremely large capacity disc cartridge which can avoid a head crush and a disc crush and has a high reliability, and a recording and reproducing...
US20070217301 Optical disk recording/reproducing apparatus and seek control method thereof  
For achieving pulling operation into tracking servo during seek operation at high-speed and with stability, in timing thereof, even on an optical disk forming lands and grooves on a recording...
US20100034060 OPTICAL DISC COMPRISING A WATERMARK AND A METHOD AND RECORDER FOR RECORDING SUCH A DISC  
A visible pattern is obtained by modulating the digital sum value. Because the digital sum value modulation allows the choice of several different channel bits groups between DC control points,...
US20070147200 SERVO CONTROLLING METHOD OF OPTICAL INFORMATION PROCESSING APPARATUS AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS  
A servo controlling method of an information processing apparatus using hologram comprises a step of irradiating a holographic recording medium with a light of first wavelength and irradiating the...
US20120195177 DISC DRIVE AND TRACKING SERVO PULL-IN METHOD  
A disc drive includes an optical pickup that emits laser light to a predetermined layer position via an objective lens and detects reflection light of the laser light, a tracking mechanism that...
US20050094506 Recording and reproducing method, recording and reproducing device and semiconductor circuit  
An optical disk information recording and reproducing device (100), which is used for recording and reproducing information on an optical disk (10), includes a system controller (19), a tracking...
US20110205869 OPTICAL RECORDING-READING METHOD AND OPTICAL RECORDING MEDIUM  
An optical recording and reading method is provided in which the information necessary for recording and reading layers is quickly acquired to reduce the seek time during reading and recording....
US20110170385 OPTICAL DISC DRIVE  
An optical disc drive according to the present invention can write information on an optical disc, which includes a substrate on which a number of pre-pits 2 have been formed on its tracks and a...
US20110170387 OPTICAL DISC APPARATUS AND CONTROL METHOD IN THE SAME  
An optical disc apparatus and a control method for the optical disc apparatus are provided. A control method for an optical disc apparatus according to one embodiment of the present invention may...
US20110205870 OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING-READING METHOD  
An optical recording medium including recording and reading layers and a servo layer increases the recording capacity thereof. In the optical recording medium including the plurality of recording...
US20120106308 OPTICAL RECORDING MEDIUM AND RECORDING DEVICE  
An optical recording medium in which recording is performed by a recording device that is configured such that tracking servo control of recording light is performed by irradiating the recording...
US20070159937 Method and apparatus for measuring the depth of a data record layer in an information record medium  
Apparatus and method for measuring the depth of data record layers of an optical storage disc having a cover layer of thickness d, an entrance surface (S), and, for example, a first data layer...
US20110205868 OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING-READING METHOD  
Efficient recording and reading are achieved in an optical recording medium including servo layers and recording and reading layers. The optical recording medium includes: a first servo layer...
US20050201262 Recordable optical storage medium capable of recording data without data loss and method and apparatus for recording data thereon  
A recordable optical storage medium for recording data without data loss and a method and apparatus for recording data thereon without data loss, including a plurality of recording layers for...
US20110205871 OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME  
An optical disc drive for reading or writing information on a multilayer optical disc having three or more recording layers by irradiating the disc with a light beam includes an optical pickup for...
US20080117731 DATA RECORDING AND REPRODUCING APPARATUS AND RECORDING LEARNING METHOD  
According to one embodiment, a data recording and reproducing apparatus includes: a reproduced signal output device reading data recorded on an optical recording medium to output a reproduced...
US20110128833 OPTICAL DRIVE DEVICE  
An optical drive apparatus that reproduces an optical disk having a land and a groove, the optical drive apparatus including a first tracking-error-signal generating unit that generates a first...
US20070041288 METHODS AND APPARATUSES FOR ACCESSING A HYBRID DISC  
The present invention discloses methods and apparatuses for accessing a hybrid disc. The hybrid disc has a plurality of recording layers corresponding to at least two different storage densities....
US20160163347 INFORMATION RECORDING AND PLAYBACK DEVICE  
An information recording and playback device includes a recording and playback unit, and a controller. The controller divides a recording area of an optical disk into a first recording area which...
US20140286148 OPTICAL DISC DEVICE  
The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data...
US20140185420 INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING APPARATUS, MANAGEMENT INFORMATION REPRODUCING METHOD, INFORMATION RECORDING/REPRODUCING APPARATUS AND IDENTIFICATION INFORMATION REPRODUCING/RECORDING METHOD  
According to one embodiment, in an information recording medium including a plurality of data layers, at least one pre-format area is provided on each of the data layers and is circumferentially...
US20140071798 MULTILAYER INFORMATION RECORDING MEDIUM, AND INFORMATION PLAYBACK METHOD AND INFORMATION RECORDING METHOD EMPLOYING SAME  
The purpose of the present invention is to minimize increase in the number of types of medium control information, and increase in time required for OPC, in association with a greater number of...
US20140003209 INFORMATION STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD  
A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the...

Matches 1 - 50 out of 65 1 2 >