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| Number | Title | Issue Date |
| 8189441 | Method of recognizing track pitch of optical disk A method of recognizing a track pitch of an optical disk, adapted for an optical disk player, is provided. The method includes the steps of driving an optical pickup head to a predetermined position, so that the optical pickup head and the spindle motor are a predet... | 05/29/2012 |
| 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 CD-ROM decoder decodes the main data. A CD-ROM determining unit deter... | 04/17/2012 |
| 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 information storage layers is less than a setting T (where T is an integer t... | 04/03/2012 |
| 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 receiving unit that receives a reflected beam of the optical beam re... | 03/27/2012 |
| 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 sequentially allocated in a predetermined direction on the write-once read-m... | 01/24/2012 |
| 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 directory and a PlayList for reproduction. A plurality of directorie... | 01/17/2012 |
| 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 frequency filter. A second signal obtained by filtration through a hi... | 12/20/2011 |
| 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 of the reproduction list held in the next generation DVD. The jump to ... | 11/22/2011 |
| 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 optical pickup unit arranged to generate a beam, direct the beam to t... | 11/15/2011 |
| 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 includes: a driving mechanism 120, which is loaded with a sele... | 10/04/2011 |
| 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 based on the operation of the transportation unit... | 07/05/2011 |
| 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 on the disc 102 as a defect to output a defect detecti... | 06/28/2011 |
| 7961575 | Automatic DTS CD Versus CD-DA detection within a file system-based device A method of detection is described to be used in file system-based player devices to determine the type of compact disk that has been inserted into a player. The method automatically distinguishes between the DTS-CD format and standard audio CDs. The method allows t... | 06/14/2011 |
| 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 beam as parallel light is applied in a circular polarized state to an op... | 06/14/2011 |
| 7940618 | Method for identifying optical disc type, data recording and/or reproducing apparatus, and medium using the same 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 address of the second position; calculating a difference between the fir... | 05/10/2011 |
| 7940619 | Optical disk apparatus and optical disk recording method with format warning information According to one embodiment, there is provided an optical disk apparatus including a recording unit which irradiates an optical disk with a laser beam to record information in a first format and a second format, a generation unit which generates warning information ... | 05/10/2011 |
| 7933182 | Optical information recording and reproducing apparatus that sets a movable range of an objective lens based on the type of recording medium An information recording and/or reproducing apparatus capable of obtaining a certain recording/reproducing margin with a simplified structure. The apparatus identifies whether an optical disc is a single-layer recording medium having one recording layer, or a multil... | 04/26/2011 |
| 7911906 | Data structure for control information on rewriteable data storage medium A data storage medium includes a data structure, called a disk control block, used for administration and control information for the data storage medium. One medium may contain multiple different disk control blocks, each addressing a different function. Each disk ... | 03/22/2011 |
| 7903516 | Recording medium and information reproduction method for reproducing management information from the information recording medium A recording method for recording, on a write once type information recording medium, management information representing a recording state of the write once type information recording medium is provided. The information recording medium includes data including a fir... | 03/08/2011 |
| 7903515 | Optical disc drive An optical disc drive according to the present invention can read data from any of multiple types of optical discs, of which the information storage layers are located at mutually different depths under their surface. When this drive is loaded with an optical disc, ... | 03/08/2011 |
| 7903513 | Method and apparatus for closing a recording range on a recording medium A method of closing a recording range includes identifying a recording medium type from recording medium information of the recording medium and changing and an unrecorded area in the recording range to a recorded area if the recording medium type indicates that the... | 03/08/2011 |
| 7903514 | Information reproduction device An information reproducing apparatus (1) is provided with: a detecting device (11) for irradiating an information. recording medium with laser light (LB) and detecting reflected light as a detection signal, the information recording medium including a ... | 03/08/2011 |
| 7885157 | Information recording medium, apparatus, and method using management information identifying whether or not embossed pits are formed in a predetermined recording area An information recording medium is provided with: a recording layer (L0 layer, L1 layer) having one or a plurality of predetermined recording areas (CDZ, 101 and the like) in which record data including buffer data in a finalizing process can be recorded; and... | 02/08/2011 |
| 7869321 | 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 plurality of lasers and moving a spherical aberration corrector while moving ... | 01/11/2011 |
| 7852724 | System and method for optical media information storage life tracking Expiration information stored on an optical medium is applied to determine an expiration date of the optical medium that provides a predetermined reliability of information archived on the optical medium, such as a predetermined acceptable defect level of the inform... | 12/14/2010 |
| 7852725 | 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 by whether a kind of a medium for recording information is the rewrita... | 12/14/2010 |
| 7843785 | Media processor storing media disposal history and control method of media processor A media processor is capable of keeping disposal history of media regardless of whether the media is externally created media or not. In the media processor, while used media set in a created media storage unit is being conveyed to a media disposal mechanism by a me... | 11/30/2010 |
| 7839743 | Optical disc apparatus and discriminating method for kind of objective lenses An optical disc apparatus includes an amplitude obtaining portion receiving S shaped waveform information of focus error signal from a focus error signal processing portion to obtain amplitude of the S shaped waveform and a discriminating portion discriminating kind... | 11/23/2010 |
| 7821895 | Data managing method for an optical disc drive writing user data into an optical disc having defects A data managing method for an optical disc drive writing data into an optical disc having defects is provided. The optical disc has a user data area and a spare area. The optical disc drive includes a first buffering space and a second buffering space. The data mana... | 10/26/2010 |
| 7792000 | Method of generating a digital photo slide show from an optical disc Before generating a digital photo slide show, both original digital photos and related media playing packages are burnt into a same optical disc. While the optical disc is loaded by a disc playing device, a media playing module installed on the optical disc playing ... | 09/07/2010 |
| 7768888 | Method for discriminating the kind of optical disk and optical disk apparatus using the same An optical disk apparatus which can promptly restart reproduction and recording by using a preceding discrimination result of a disk kind without using a memory. A mechanism for correcting an aberration is constructed by an expander lens for the aberration correctio... | 08/03/2010 |
| 7760600 | Method for testing a burner and a rewriter disk A method for testing a burner includes the steps of: providing a rewriter (RW) disk (4) in good burning condition, and inserting the RW disk into a test burner (3) connected to a computer (1); selecting a burner type for the burner; designating ... | 07/20/2010 |
| 7760601 | Reproducing apparatus with built-in optical disk drive Conventional reproducing apparatuses used to perform incorrect detection or consume electricity considerably. According to the present invention, the comparator 61 comparing voltages at both ends of the spindle motor 15 and outputting the result is pro... | 07/20/2010 |
| 7751290 | Method and apparatus for determining write strategy parameter values for writing data on an optical disk The invention relates to a method for determining write strategy parameter values for writing data on an optical disk from a group of optical disks of different types using an optical disk drive, in particular to different types of BD disks. The method includes iden... | 07/06/2010 |
| 7746746 | Optical media with control data in wobble An optical medium has auxiliary information and control data encoded in wobble. The control data specifies action that a drive is permitted or required to take with the auxiliary information. For example, the control data may be used to specify whether a drive readi... | 06/29/2010 |
| 7746745 | Method for determining the type of digital versatile disc A method for determining the type of a digital versatile disc (DVD) so that a DVD+ can be distinguished from a DVD−. The main steps for determining the type of a DVD include setting up related parameters, reading a general wobble signal or a wobble signal within t... | 06/29/2010 |
| 7733753 | Optical disk device This optical disk device includes a pickup head, a spindle motor, a signal generation unit, a runout amount calculation unit, and an out of balance disk detection unit. The signal generation unit generates a tracking error signal. The runout amount calculation unit ... | 06/08/2010 |
| 7724622 | Recording device capable of determining the media type based on detecting the capacitance of pair electrodes A device enabling simple detection of a recording medium placed on a tray includes at least two electrodes arranged on the tray, an electric field sensor connected to the electrodes, and a control circuit connected to the electric field sensor. The electric field se... | 05/25/2010 |
| 7715292 | Drive and method for determining the type of optical record carrier The present invention relates to a drive for accessing an optical record carrier (2) comprising means (4) for determining the type of record carrier, in particular for distinguishing a read-only record carrier from a recordable or rewritable record car... | 05/11/2010 |
| 7706227 | Information recording/reproduction apparatus An optical information recording/reproduction apparatus includes a correction device that corrects aberration, due to a change in thicknesses of a transparent substrate and spherical aberration generated by inserting an optical attenuation device into an optical pat... | 04/27/2010 |
