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8179757 |
Method and apparatus for recording and reproducing information on and from optical disc
An apparatus for recording and reproducing an information signal on and from an optical disc includes a memory. The information signal is written into the memory. The information signal is read out...
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8174943 |
Optical disk device
An optical disc apparatus according to the present invention includes: a laser light source for emitting multiple light beams, of which the wavelengths are different from each other and include a...
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8164989 |
Information recording method and information recording apparatus
A recording method for irradiating a multi-layered optical recording medium with a laser beam to record information thereon. The optical recording medium can form a first information recording...
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8164998 |
Optical disc device
The optical disc apparatus of this invention includes: an optical pickup, which irradiates an optical disc with a light beam and generates a light detection signal based on the beam reflected from...
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8164993 |
Method and apparatus for detecting land pre-pits
Aspects of the disclosure provide a method for detecting land pre-pits. The method can adaptively adjust a threshold for detecting the land pre-pits in order to improve the correctness of...
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8159916 |
Format determining apparatus
A pick-up of a format determining apparatus irradiates light to an optical disk to generate a reproduction signal. A signal processing unit decodes the reproduction signal to generate main data. A...
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8149666 |
Optical disc apparatus
An optical disc apparatus according to the present invention includes a disc type recognizing section for determining whether the optical disc loaded is a first type, of which the number of...
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8144557 |
Optical information recording/reproducing apparatus and disk distinction method
An optical information recording/reproducing apparatus includes an optical source unit that emits an optical beam toward an optical information recording medium mounted on the apparatus, an optical...
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8139454 |
Recording and reproducing apparatus and method
A Spare Area kept unused on a disk is available for use other than spare processing, or Defect Management process, and compatibility of the disk is at least secured between different recording...
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8130607 |
Method and apparatus for detecting burst cutting area on optical disc
An apparatus for detecting burst cutting areas on optical discs includes an optical pickup head, a front-end processing unit, a sync pattern detector, a channel clock recovery device, and a data...
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8130604 |
Spherical aberration compensation method and device of optical disc drive
A spherical aberration compensation method is provided. A first thickness of a cover layer at a first radius position of an optical disc is measured. A second thickness of the cover layer at a...
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8130612 |
Recording device, recording method, and computer program
A recording apparatus which records information on a write once recording medium sequentially including a user data area, a first management information area, an indicator area and a second...
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8125879 |
Apparatus and method for recording and/or reproducing data to/from recording medium
A recording medium, comprising a data area including a segment region and a replacement region; a first control data area storing access control information for controlling access to the segment...
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8107345 |
Optical disk device and optical disk discriminating method
An optical disk discriminating method and an optical disk device which can detect reflected rays for making discrimination among kinds of optical disks with high accuracies. By switching a...
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8102741 |
Write-once read-many information recording medium, information recording method, information reproduction method, information recording apparatus, and information reproduction apparatus
A write-once read-many information recording medium is provided, which is capable of easily searching for a latest DDS and a latest defect list. At least one disc management working area is...
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8098979 |
Reproduction apparatus having protection flags and code number
The present invention relates to an apparatus and a method for reproducing a recording medium that require input of a code number only once when the code number is required to be inputted to both a...
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8094529 |
Apparatus for recording of information
With an object of executing excellent finishing processing when information is recorded to a rewritable type record medium or a write once type record medium, the finishing processing is switched...
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8081548 |
Method of evaluating characteristics of multilayer optical recording medium
A multilayer optical recording medium having three or more information recording layers is irradiated with a laser beam, and a first signal obtained from the reflected laser beam is subjected to a...
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8077575 |
Information recording method that records management information for managing dummy information as a file in a user data area
A method of recording information on a recording medium. The method includes determining whether an amount of information recorded in a user data area is equal to or greater than a predetermined...
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8072858 |
Optical disk apparatus, control method of optical disk apparatus, and integrated circuit
A disk motor which rotationally drives an optical disk; a rotational phase detector which detects a rotational phase thereof; an optical head having a collecting lens which collects an optical...
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8072861 |
Method for determining completeness of optical disc and method for playing optical disc
A method for determining the completeness of an optical disc and a method for playing the optical disc are provided. The method for playing the optical disc includes: performing focusing on and...
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8068397 |
Recording apparatus and recording method for recording position information of user data
In a write once type optical disc, when ejecting the disc and turning power OFF, it is necessary to update record management data on the disc so that the record management data on the disc coincide...
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8064306 |
Optical disc device and hybrid optical disc
When a hybrid optical disc is loaded on a player, the next generation DVD layer is reproduced in preference to the DVD layer. Jump to the DVD layer is appropriately performed based on the content...
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8059509 |
Optical disk drive and method for use with an optical disk drive for determining the disk characteristic
An optical disk drive for determining a disk characteristic of an optical disk comprising an information layer comprising a substantially circular track is described. The optical disk drive has an...
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8059503 |
Backup device and one-key data backup method for the same
A backup device and a one-key data backup method for the same use a backup device having ability to retrieve a memory card and an optical disc. The backup device is connected to an external...
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8059512 |
Information recording medium, recording method, data structure, information recording apparatus, program, and recording medium
A disk-shaped rewritable information recording medium having at a first recording layer and a second recording layer is disclosed. The information recording medium includes a first data area...
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8054732 |
Optical recording and reproducing apparatus having an optical pickup including a liquid crystal correcting element
An optical recording and reproducing apparatus which suppresses the generation of a noise component in a servo signal while preventing a deterioration in using efficiency of a light beam is...
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8054726 |
Processor and processing program
An object of the present invention is to retrieve and process a piece of content to be processed by a simple method at the time of storing content recorded in a CD into an HDD or the like, reading...
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8050163 |
Optical disc manufacturing method and device, optical disc, and optical disc reproduction method
According to the present invention, there is provided a method of recording a unique ID to a read-only optical disc based on the 17PP modulation. The read-only optical disc (1) has set thereon a...
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8040785 |
Optical disc, optical disc manufacturing method, optical disc recording device and optical disc reproduction device
An optical disc includes a reflective film formed on concave and convex marks after the concave and convex marks are synchronized with the integral multiple of a channel bit length and formed in...
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8036081 |
Optical disk device and optical disk processing system having optical disk device
An optical disk processing system having a recording unit and a printing unit is provided. The optical disk processing system comprises a printing unit and a recording unit. A drive controller of...
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8036083 |
Optical disk device
This optical disk device includes an examination means which examines a first physical characteristic of an optical disk, and a servo means which starts servo control based upon that first physical...
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8031570 |
Optical disk unit and driving method therefor
An optical disk drive according to the present invention has the ability to read data from multiple types of optical disks, each of which includes at least one information storage layer. The drive...
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8023370 |
Apparatus and method for converting groove/land polarity upon groove/land track change on optical medium
An apparatus for converting a groove/land polarity on an optical medium, comprises a physical identification (PID) detector for detecting a first PID value from a first sector, a sector information...
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8023378 |
Method of recording and reproducing data
A method of recording data, as embodied, includes creating and temporarily storing first management information for the data recorded before a recording failure occurs, when the recording failure...
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8018806 |
Method for discriminating disc
A disc discriminating method for use in an optical disc drive includes the following steps. Firstly, an optical pickup head of the optical disc drive is controlled to move in a first direction when...
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8014244 |
Optical disk reproduction apparatus and optical disk reproducing method
According to one embodiment, a reproduction apparatus includes an execution unit configured to execute an advanced application, a detection unit configured to detect a series of keys which are...
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8006034 |
Information recording medium, recording and/or reproducing apparatus, and recording and/or reproducing method
An information recording medium, recording and/or reproducing apparatuses, and recording and/or reproducing methods which enable effective management of a last data recording address of a data area...
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7990820 |
Optical disc verification method and optical disc medium
An optical disc verification method according to the present invention includes the steps of: writing data on first, second and third radial locations on an optical disc at a writing speed V1 and...
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7983121 |
Optical axis shift correcting device and method, and computer program
An optical axis shift correcting device is provided in an optical information device including an irradiation element for applying a laser, an optical system for guiding a laser applied to an...
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7983136 |
Recording medium for storing version information for maintaining recording and/or reproducing compatibility, and method and apparatus for managing the same
A method of recording read/write compatibility information on an optical disc and a recording medium employing the method. Extended part version information, latest part version having recording...
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7983133 |
Portable data storage assembly having a holographic data storage layer and an optical tracking layer
A portable data storage assembly, comprising a holographic data storage layer, and an optical tracking layer comprising addressing information for the holographic data storage layer, wherein that...
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7983127 |
Optical disk device and parameter selection method
Provided is an optical disk device installed in a personal computer, including: an information creation unit that creates identification information for identifying the type of the personal...
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7974165 |
Error detection apparatus and method for a disc loading system
The effect of detection errors when detecting if a disc recording medium is in a disc drive is eliminated. A control unit 17 detects if an optical disc 11 was supplied to an optical disc drive 13...
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7969844 |
Optical disc device
An optical disc apparatus includes: a defect detecting section 124 for detecting, based on a light detection signal and with respect to a preset detection reference level, a fingerprint or a bubble...
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7965616 |
Recording medium, and method and apparatus for recording and reproducing data on/from recording medium
A recording medium, and a method and apparatus for recording and reproducing data to/from the recording medium are disclosed. The recording medium having a data structure for managing a data area...
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7965600 |
Data recording evaluation method and optical disk recording and reproduction device
Novel evaluation indexes are introduced to allow both a total evaluation of data recording and an evaluation of individual detection patterns. A data recording evaluation method includes a step of...
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7961579 |
Information reproduction apparatus
When a medium selection button 101 is operated, an optical disc reproduction apparatus 1 recognizes which medium is selected according to inputted medium selection information, and then opens a...
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7961574 |
Kind identifying apparatus, kind identifying method, and identifying program
There is provided a type judgment device capable of rapidly and safely identifying the type of an optical disc while preventing unexpected information recording or information erase. An optical...
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7961572 |
System and method for reading micro-holograms with reduced error rates
The present techniques provide methods and systems reading a data bit of interest on an optical data disc with a reduced error rate. The data bit estimation may be improved by reducing...
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