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7391708 |
Optical disc and method for reproducing the same
The present invention provides a technique for improving reliability of reading header information. The optical disk is composed of a recording track. The recording track includes a data recording...
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7386770 |
Information reproduction apparatus for reproducing defect management information from defect management area sets, and an information recording apparatus for replacing defect management information
An information storage medium according to an aspect of this invention comprises a rewritable area, the rewritable area comprises a user area to store user data, and a defect management area to...
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7385909 |
Recording medium, information recording and reproducing method, and recording and reproducing apparatus
Conventionally, as in the case of switching between a DVD-R and a DVD-RAM, when the method of record mark arrangement in a track is changed, the physical format of the disk is also changed. This...
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7385908 |
Record carrier including a servo track having first and second modulated parts representing a data type and a word sync type, respectively, and an apparatus for scanning the record carrier
A record carrier has a servo track ( 4 ) indicating an information track ( 9 ) intended for recording information blocks. The servo track ( 4 ) has a periodic variation of a physical parameter at a...
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7382714 |
Recording/reproducing apparatus
A recording apparatus for use with a reproduction-only optical information storage medium, including: a recording unit which records data on the reproduction-only optical information storage...
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7372800 |
Optical recording medium and optical recording process using the same
An optical recording medium having two recording layer structures which includes a cover substrate, a grooved substrate, a first recording layer structure, an intermediate layer, a separation...
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7370367 |
Security device and article incorporating same
A compact disc ( 10 ) for a computer incorporates a security device for preventing non-authorized reading of data carried by the disc. The security device includes an LCD laser blocker ( 16 ) which...
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7366070 |
Storage medium including a burst cutting area (BCA)
According to one embodiment, a storage medium includes a burst cutting area at an inner periphery, wherein the burst cutting area has includes plural burst-cutting-area data areas.
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7362692 |
Method and system of mass producing double-sided optical discs
Double-sided optical discs, such as a DVD-18 disc, are mass produced with data tracks on each layer. The tracks on one side of the discs are oriented along one spiral while the tracks on the other...
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7362677 |
Information record medium and information writing/reading apparatus
An information writing/reading apparatus that cooperates with an information record medium including a ROM area and a RAM area, either the RAM area or the ROM area having in advance control...
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7356142 |
Secure compact disk and player
A method for recording data on an optical medium is disclosed. In one embodiment, the method includes receiving a first plurality of frames of data at a Cross Interleave Reed-Solomon Code (CIRC)...
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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...
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7355936 |
Disc recording medium, disc drive apparatus, and reproduction method
First data representing user data and third data use the same error correction codes. The first data has a first error correction block structure and the third data has a second error correction...
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7352684 |
Information medium and information recording and reproducing device
The information medium of the present invention is provided with a lead-in region and a data region in which information signals can be recorded, wherein the lead-in region has a recordable portion...
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7352681 |
Optical disc for data storage with invisible tracks and method of making same
An optical disc and a method of making the same are provided in which the tracks on the disc are not numbered in strict numeric sequence. For example, a disc may contain only odd or only even...
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7349623 |
Data recording apparatus and system having sustained high transfer rates
According to the invention, techniques for recording data onto recording media at relatively high transfer rates for relatively long periods of time. Embodiments according to the present invention...
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7349303 |
Information recording method and apparatus
In an information recording method and apparatus, a sequence of sync frames indicative of data is recorded onto tracks of an optical recording medium. In the recording medium, prepits are formed on...
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7345985 |
Optical disk, optical disk access device and access method
An optical disk having an increased data storage capacity and accessible randomly, the positional shift of which can be quickly detected. An optical disk access device and access method are also...
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7345973 |
Multi-layer writable optical record carrier with an optimum power calibration area, and method and apparatus for forming optimum power calibration areas on such a record carrier
A writable optical record carrier comprising a plurality of recording layers L0, . . . , Ln−1 separated by a spacer material, each recording layer comprising an optimum power calibration area...
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7340156 |
Information storage medium with aggregate attribute information, and apparatus for reproducing the same
An information storage medium includes: a plurality of unit audio information to be reproduced independently of each other; aggregate audio information each including one or more of the unit audio...
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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...
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7339871 |
Method for accurate positioning of marks and spaces on an optical disc
An optical disc has spatial features (notches, bumps, etc.) that intentionally distort the analog Read Data signal. For a mark or space that is centered on a spatial feature, the distortion does...
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7330422 |
Optical storage medium having test pattern for measuring a modulation degree during recording process
A read-only information storage medium includes: a data area which stores user data; a lead-in area; and a lead-out area. A pattern for achieving a purpose is formed in at least one of the lead-in...
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7330411 |
Optical information storing device, data processing circuit and information storage medium
The present invention aims at providing an inexpensive optical information storing device that produces reduced cross talk. An optical information storing device has a cyclic data output circuit ...
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7330409 |
Disc with temporary defect management area, and disc defect management method and apparatus therefor
A write once disc with at least one record layer includes a temporary defect management area in which temporary defect information regarding only defect detected during a corresponding recording...
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7327843 |
Data reproducing device, hard disk, and data storing disk
A hard disk A has is constructed to include: a disk 10 in which copy protection information is written in advance in a surface shape such as slits or corrugations in a pre-recording region 13 ...
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7327660 |
Optical disc and physical address format
An optical disc medium comprises a track groove, along which main information is recorded. The track groove is divided into a plurality of blocks. The plurality of blocks each include a plurality...
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7327655 |
Write once disc, disc drive therefor, and method of managing disc defect considering compatibility with rewritable disc drive
A write once disc, a disc drive therefor, and a method of managing disc defects on the write once disc using the disc drive in consideration of the compatibility of the write once disc with a...
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7324422 |
Information storage method that assures compatibility of writable medium with read only medium
An information recording method performing recording on an information recording medium having multiple rewritable recording layers each having a data area in which user data is to be recorded is...
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7321544 |
Optical recording medium including identification region constituted of protrusions and recesses
The present invention is intended to provide an information recording medium in which ID regions (identification regions) have a high recording density. The information recording medium according...
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7319656 |
Optical information recording medium, optical information recording apparatus and method
The present invention is applicable to a recording apparatus of a CD or DVD, a recording method thereof and a recording medium, and an object of the present invention is to clearly record a second...
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7317678 |
Optical disc, optical disc recording/reproducing apparatus, and optical disc recording/reproducing method
In an optical disc in/from which data is recorded or reproduced by irradiating a storage area on the optical disc with a laser, information containing recording velocity information (RVI) for...
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7315498 |
DVD reproducing apparatus, disk reproducing apparatus and DVD reproducing method
A DVD reproducing apparatus includes a pickup to read data from a disk having a pit data area to form pits along tracks and an NBCA to read data by laser cutting in a radial direction, a tracking...
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7313316 |
Method and apparatus for evaluating for the purpose of decoding a bitstream having a data structure fulfilling the requirements of two different data structure standards, and storage medium containing such bitstream
There are different types of DVD systems, e.g. the replay-only DVD-Video system and the re-recordable DVD-VR system. A DVD-VR type disc containing a DVD-VR type bitstream is to be replayed on a...
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7313066 |
Write once disc allowing management of data area, method of managing the data area, and method for reproducing data from write once disc
A write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of...
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7313056 |
Magneto-optical recording medium and magneto-optical recording device
The magneto-optical recording medium is comprised of a phase pit substrate/dielectric layer/recording layers/dielectric layer/reflection layer and a ROM and RAM can be simultaneously regenerated....
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7304924 |
Optical disk device capable of demodulation and verification of address data from land and groove track address systems
A high-definition optical disk device for recording and reproducing data with respect to lands and grooves of an optical disk. The grooves and the lands of the optical disk are wobbled, and address...
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7301889 |
Optical disc
An optical disc having track grooves formed in a radial direction of the disc, and with the disc being divided into a plurality of zones, wherein track grooves are formatted into waved patterns,...
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7301876 |
Multi-layered disc and multi-layered disc reproducing apparatus
A multi-layered disc (D 1 , D 2 , D 3 ) is provided with a plurality of recording layers laminated with each other in a direction of a normal line of the recording layers, in each of which an...
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7301873 |
Information recording medium, information recording device and method therefor, and computer program product and storage medium therefor
On a recording medium, the version information indicating a version of the recording standard to which the information recording medium is adapted is recorded. Moreover, the normal recording...
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7301866 |
Information reproducing apparatus and method
A pit data generation circuit generates a first clock signal synchronized with pit data and a pit synchronization signal from a sum read signal obtained by reading the length of a pit. A division...
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7301865 |
Method and system for time compensation of re-writeable optical media write parameters
An optical medium storage device improves the usable life of re-writable optical storage mediums, such CD-RW, DVD+RW and DVD-RAM disks, by adjusting write parameters to compensate for time between...
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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...
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7298689 |
Optical disc having a plurality of recording layers, and recording method and reproducing method therefor
An optical disc includes a plurality of recording layers, each layer having a lead-in area, a data area, and a lead-out area. A dedicated-reproducing area having a disc-related information zone,...
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7292514 |
Apparatus for recording information in information recording medium, information recording medium, method for recording information in information recording medium, program for recording information in information recording medium, and program product
A multi pulse section 30 is generated in the mark forming portion corresponding to a mark 21 having a length nTw (n≧=2), where Tw represents a reference clock cycle. The multi pulse section ...
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7289418 |
Optical disk with erasable surface and manufacturing method thereof
An optical disk with an erasable surface of the present invention includes a transparent substrate, a recording layer, and a reflective layer, and an erasable writing layer. The recording layer is...
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7289401 |
Storage medium, recording/reproducing apparatus, and recording/reproducing method
In a storage medium such as a DVD+R or DVD+RW disc having a plurality of recording layers, the maximum address (i.e., the maximum physical sector number of a layer) of a user-data-recordable region...
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7283457 |
Optical recording medium and method of evaluating optical recording medium
A conventional mechanical precision measuring device is used effectively in the measurement of the eccentricity of a high density optical disc. A DVR optical disc 2 comprises a pattern 4 of...
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7283456 |
Reproduction-only recording medium
In a read-in area on the ROM disc, there are two control-data areas, and the Disc Information recorded in each control-data area comprises a error correction code (ECC (Error Correcting Code) block...
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7283455 |
Data media having variable control field in data units
Data units on a data storage medium include a control field. In one example embodiment, a control block specifies the control action determined by the state of one or more bits in the control...
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