| Patent application number | Description | Published |
|---|
| 20080285421 | Optical Disk Drive - An optical disk drive according to the present invention includes: an optical pickup | 11-20-2008 |
| 20090010129 | Optical Disc Judgment Method and Optical Disc Device - An optical disk apparatus according to the present invention is an optical disk apparatus for performing at least one of: recording data to a plurality of types of optical disks including a recordable optical disk and a read-only optical disk which are produced according to the BD specifications; and reproducing data from the optical disks. This apparatus includes: a means ( | 01-08-2009 |
| 20090022021 | Optical Disk Drive - After an optical disk drive according to the present invention has been loaded with an optical disk and before the operation of recognizing the type of the given disk is finished, the drive presumes one of multiple types of candidate optical disks, from/on which data is readable and writable using a light beam with the shortest wavelength among the candidate disks, to be the disk being driven by the motor now and gets the beam for the presumed type of disk radiated from a light source (Step (A)). Next, the drive gets the disk spun at a rotational velocity that realizes a linear velocity equal to or higher than a standardized normal velocity when data is read from the presumed type of disk (Step (B)). Thereafter, the drive starts a focus control in a situation where the spot of the beam being formed on the disk is moving on the disk at the linear velocity equal to or higher than the normal velocity (Step (C)). And then the drive performs the operation of recognizing the type of the disk by the light beam reflected from the disk under the focus control (Step (D)). | 01-22-2009 |
| 20090028028 | OPTICAL DISC, AND INFORMATION RECORDING/REPRODUCING METHOD AND INFORMATION RECORDING/REPRODUCING APPARATUS USING THE SAME - The present invention provides a method for recording/reproducing information on/from an optical disc, wherein the optical disc has a first to an n-th recording layers (n is an integer of 2 or greater) laminated on a substrate, each of the first to the n-th layers having data regions segmented into a first to an m-th data zone groups (m is an integer of 2 or greater) along a radial direction of the optical disc, each of the first to the m-th data zone groups including at least one data zone, the method comprising the steps of: a) recording/reproducing information in/from data zone groups from a j-th data zone group of a first recording layer to a j-th data zone group of an n-th recording layer; and b) repeating step a) for j=1, 2, . . . , m. | 01-29-2009 |
| 20090059761 | OPTICAL DISC APPARATUS AND OPTICAL PICKUP - An optical disc apparatus according to the present invention includes: an optical pickup including an optical system that converges a light beam on an optical disc and a photodetector that detects light reflected from the optical disc; and a fingerprint detector for detecting, based on the output of the photodetector, multiple fingerprint dots on the surface of the optical disc. The fingerprint detector confirms the presence of a fingerprint on the optical disc on sensing the output of the photodetector change according to the pattern of the fingerprint dots. | 03-05-2009 |
| 20090109812 | OPTICAL DISC DEVICE - An object of this invention is to measure the tilt quantity of, and perform a tilt control on, an optical disc accurately without depending on the rotation control method. | 04-30-2009 |
| 20090122669 | OPTICAL DISC DEVICE - An optical disc drive according to the present invention can write data on both a write-once disc and a rewritable disc. The drive includes: a disc recognizing section | 05-14-2009 |
| 20090147639 | 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 | 06-11-2009 |
| 20090154324 | OPTICAL DISC AND OPTICAL DISC DEVICE - An optical disc drive according to the present invention can read and/or write data from/on an optical disc with information layers including first and second information layers (L | 06-18-2009 |
| 20090274032 | OPTICAL DISC DEVICE - This optical disc drive can read and/or write data from/on an optical disc | 11-05-2009 |
| 20090290463 | 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 the disc; a search section, which controls the pickup before data is written on a storage area of the disc, thereby adjusting the beam spot location and searching a reference one of information layers stacked for a defective area in the storage area of the disc; a defect decision section for detecting an error based on the detection signal and determining a portion of the storage area, where the error has occurred, as the defective area; a defect size measuring section for measuring the size of the defective area in an area of the reference layer and generating a defect information list indicating there is the defective area in the area of the reference layer; and a recording range control section for managing, by reference to the list, the storage area such that no data will be written on a perpendicularly projected area defined by projecting the defective area of the reference layer perpendicularly to another information layer. | 11-26-2009 |
| 20100097906 | OPTICAL DISC APPARATUS - An optical disc apparatus according to the present invention includes a disc type recognizing section | 04-22-2010 |
| 20100226226 | OPTICAL DISK, OPTICAL DISK DEVICE, OPTICAL DISK DEFECT REGISTERING METHOD, OPTICAL DISK RECORDING METHOD, AND OPTICAL DISK REPRODUCING METHOD - An optical disc | 09-09-2010 |
| 20100232273 | OPTICAL DISC DEVICE - The optical disc apparatus of this invention includes: an optical pickup | 09-16-2010 |
