|
Match
|
Document |
Document Title |
|
|
7385887 |
Address signal position detection apparatus, optical disk playback apparatus, and address signal position detection method
The address signal position detection apparatus comprises a photodetector, a first and second adders which generate, from the output signals from the photodetector, two signal sequences whose...
|
|
|
7355956 |
Data formatting method for recording optical information using dummy data, and optical disk
A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the...
|
|
|
7339878 |
Method and apparatus for recording optical information including dummy data, and optical disk having such data recorded thereon
A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the...
|
|
|
7319642 |
Method for adjusting focus bias in optical disk device
Disclosed is a method for adjusting focus bias in an optical disk device. When a focus bias adjustment operation for an optical disk such as a DVD-RAM is performed, a focus bias offset value at...
|
|
|
7315491 |
Disk driving apparatus and information readout method with selective servo control for read-out destinations of lands and grooves
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...
|
|
|
RE39952 |
Laser power controller and optical disk device
A power control device for controlling a power of a light source of an optical beam directed to an optical medium. The power control device includes a reflected light detector for detecting...
|
|
|
7310290 |
Tracking learning/adjusting method and optical disk device
Even in an optical disk which includes, within a single disk, plural record areas whose track-pitches differ from each other, a tracking parameter is adjusted in a short time and with a high...
|
|
|
7307933 |
Optical disc drive
An optical disc drive according to the present invention reads and/or writes data from/on an optical disc having at least one information layer with a light beam and includes: a spherical...
|
|
|
7301860 |
Recording disc and apparatus and method for reproducing recorded information
A recording disc and recorded information reproducing apparatus and method for immediately starting reproduction of information when a push-pull based tracking control is employed to reproduce...
|
|
|
7272106 |
Optical information storage medium
An optical information storage medium includes a lead-in area, a lead-out area, and a user data area between the lead-in and lead-out areas and in which user data is recorded. Pits are formed in...
|
|
|
7266056 |
Method of focus position adjustment by controlling a deviation value and system thereof
The present invention provides a focus position adjustment method for adjusting a focus position by which an optical storage device reads an optical storage medium. The optical storage medium...
|
|
|
7257052 |
Control apparatus and optical disk apparatus
A tracking control apparatus comprises an signal processing section, a lens characteristic measuring section and an optimum lens position searching section. The lens characteristic measuring...
|
|
|
7242655 |
Track discriminating apparatus and method for optical recording medium
A land/groove track discriminating method and apparatus for an optical recording medium having a land/groove structure which can stably discriminate the kind of a track even in an unstable state of...
|
|
|
7224646 |
Method of forming image on optical disc by radialy vibrating laser beam under focus control
An optical disc recording apparatus can draw an image by radially vibrating a laser beam under stable focus control. A pickup radiates the laser beam onto the optical disc rotated by a spindle...
|
|
|
7206262 |
Optical disk recording/reproducing device
A moved distance detecting means ( 15 ) detects the moved distance in a tracking direction of an object lens, a position signal generating means ( 60 ) generates a position signal corresponding to...
|
|
|
7203138 |
Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same
An optical head device includes a light source for emitting light; a collection optical system for collecting the light emitted by the light source to an information memory medium including tracks...
|
|
|
7190643 |
Land pre-pit address demodulating device
In a land pre-pit address demodulating device DM for detecting land pre-pit address information during recording to a DVD-R/RW-disc, a tracking error signal TE is muted by a first reference...
|
|
|
7184373 |
Adaptive focusing method and apparatus
An adaptive focusing apparatus and method thereof of an optical disc drive having a focus servo controller moves a pickup head to an optimal focus point. A disc driver rotates an optical disc and...
|
|
|
7180834 |
Apparatus and methods for digital data recording
An apparatus for holding digital data. The apparatus includes a medium in which a plurality of dimples are spaced for tracking by a playing apparatus. Each dimple includes a plurality of facets,...
|
|
|
7164628 |
Optical disk device
An optical disk device in which data is written to or reproduced from an optical disk having an area which contains a header section and another area which does not contain a header section. When a...
|
|
|
7161893 |
Stamper for fabrication of optical recording medium, method of forming information recording area and light transmissive layer, and optical recording medium
A surface treatment of a light transmissive layer by spin coating is carried out in a simple way at low cost. When a light transmissive layer is to be formed by spin coating, the transfer of an...
|
|
|
7151721 |
Optical recording method using land/groove recording
An optical reproducing apparatus for reproducing information on a medium includes a light source, an optical system for irradiating a light beam generated by the light source on the medium, a...
|
|
|
7151720 |
Recording apparatus for recording data on optically readable discs
Method of recording control signals on a removable optically readable disc like recording device comprising recording control data representing the physical structure of an optically readable disc....
|
|
|
7145847 |
Annealed optical information recording medium and optical information recording/reproducing apparatus for the same
A high density optical information recording medium comprises a substrate having rows of land and groove and a recording layer formed on the substrate. Each of the rows of land or groove includes...
|
|
|
7142485 |
Information storage apparatus
The present invention provides an information storage apparatus that generates a tracking error signal based on a detection signal, and performs various control operations based on the tracking...
|
|
|
7126899 |
Optical recording medium processing device and focal point control method thereof
The focus is moved from a first layer (L 0 ) to a second layer (L 1 ) of a double-layered optical disk by stopping a control loop operation and applying acceleration pulses for an interlayer jump...
|
|
|
7116612 |
Optical pickup device driven by an error signal obtained from an optical detector's output signals
A light beam from a light source is introduced to a grating element of a pickup device to create zero order diffracted light, ±first order diffracted light, and ±second order diffracted light. An...
|
|
|
7113460 |
Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical disk
On an optical disk, a string of a plurality of pits having two different depths is formed. Quantity of light reflected from the pit string is detected by a photoreceptor element, and based on the...
|
|
|
7099253 |
Method and apparatus for DVD recognition using inner and outer tracking error signals
A DVD recognition method and apparatus is disclosed. First, a disc recognition apparatus uses a laser with a specific wavelength to irradiate an inner area of the DVD, thereby obtaining an inner TE...
|
|
|
7099241 |
Apparatus for scanning optical recording media
An apparatus for reading and/or writing data markings of an optical recording medium having data markings arranged along a track and header markings arranged laterally offset with respect to the...
|
|
|
7095705 |
Optical information recording medium and optical information recording and reproducing apparatus
An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a...
|
|
|
7072251 |
Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction
On an optical disc including a substrate on which pits having at least two different depths are formed, main information is recorded by the shape of the pits and additional information is recorded...
|
|
|
7054240 |
Method and apparatus for providing focus control on a multi layer disc
The present invention is a method and system to provide focus control in a multi-layer optical storage medium. The method comprises generating a beam of light and reflecting the beam of light off...
|
|
|
7054239 |
Recording medium, information recording device, and information reproducing device
An information recording medium comprises a read-out track having a data region forming data bits for reproduced data and a servo pattern region forming servo bits for tracking control. The servo...
|
|
|
7050386 |
Optical recording medium and misalignment measuring instrument
To provide an optical recording medium and an eccentricity amount detecting device using the same that can detect an eccentricity amount representing a relative displacement amount in a radiation...
|
|
|
7035198 |
Optical recording medium, recording apparatus and method for optical recording medium, and reproducing apparatus and method for optical recording medium
Audio data of 20 bits is separated into first data of upper 16 bits and second data of lower 4 bits. EFM modulation data is formed from the first data. A laser beam is on/off controlled in...
|
|
|
7035177 |
Method and apparatus for aberration correction
In a method and an apparatus for aberration correction according to the invention, aberration occurring in recording/reproducing information derived from causes such as thickness variation of a...
|
|
|
7031246 |
Optical disc, optical disc reproducing method and apparatus, and recording method
An optical disc playback method is provided which includes steps of reading identification data recorded in an optical disc loaded in an optical disc player and starting reading data from a second...
|
|
|
7024061 |
Optical scanning device
An optical scanning device ( 21 ) is for scanning with a radiation beam a substantially circular track of an information layer ( 22 ). The device includes: (i) a radiation source ( 26 ) for...
|
|
|
7023773 |
Apparatus and method of generating optimum recording power for optical recording/reproducing apparatus
A method and apparatus for generating an optimum recording power before recording user data in a recordable optical recording medium is disclosed. According to the method and apparatus, an optimum...
|
|
|
7020053 |
Optical disc apparatus
In an initial operation of an optical disc apparatus for reading out information data recorded in the innermost data recording area on the optical disc, a main processor judges whether periods...
|
|
|
7020052 |
System and method for a high bandwidth servo system
A storage medium is provided having a relatively large number of relatively small servo sectors. The storage medium includes a plurality of tracks. Each track includes a plurality of data sectors...
|
|
|
7016271 |
Optical recording/playback apparatus and optical recording medium
An optical recording/reproducing apparatus comprises a light beam emitting unit which emits a plurality of light beams to the recording medium, a photodetection unit which detects the reflected...
|
|
|
7016269 |
Optical pickup apparatus and focusing control method
An optical pickup apparatus having an irradiation optical system for condensing a light beam on a track of a recording plane and a photodetection optical system for guiding return light to a...
|
|
|
7009918 |
Information storage apparatus
The present invention provides an information storage apparatus that generates a tracking error signal based on a detection signal, and performs various control operations based on the tracking...
|
|
|
7009791 |
Position detecting method, information recording/reproducing device and information recording medium
A position information signal pattern is recorded into a recording medium. The position information signal pattern is configured by arranging graphics having a circular shape, a rectangular shape...
|
|
|
6980495 |
Optical recording apparatus with interleaving blank rounds into spiral track
In an optical recording apparatus having an optical pickup, a rotating section is provided for rotating an optical disk which is formed thereon with a guide groove to define a spiral track having a...
|
|
|
6980489 |
INFORMATION RECORDING/REPRODUCING APPARATUS FOR RECORDING/REPRODUCING INFORMATION WITH RESPECT TO INFORMATION STORING MEDIUM WITH GUIDE TRACKS AND INFORMATION TRACKS, AND TRACKING METHOD USING THE INFORMATION STORING MEDIUM
A magnetic tape has a guide track for optically obtaining a tracking signal and an independent information track for storing information. The magnetic tape is partitioned into different kinds of...
|
|
|
6977873 |
System and method to adjust the level of re-calibration effort based on disc drive performance
A system and method for dynamically re-calibrating an optical disc drive during operation is provided. The optical media includes a pitted premastered area that cannot be overwritten and a grooved...
|
|
|
6975579 |
Optical information recording medium and optical information recording and reproducing apparatus
An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a...
|