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| Number | Title | Issue Date |
| 8174938 | Optical disc apparatus and method of controlling the same An optical disc device includes a position detector which detects a position of the pickup in accordance with a output signal from the first light receiver of a position sensor which receives light from a encoder board, a rotation position detector which detects a r... | 05/08/2012 |
| 8164999 | Optical disc apparatus and method for determining information recording layer in optical disc An optical disc device includes a laser diode which irradiates an optical disc having a plurality of layers with laser light, a photodetection section which detects laser light reflected by the optical disc, which comprising a pair of sub-photodetectors and a main p... | 04/24/2012 |
| 8068393 | Optical disc apparatus including a divided photodetector An optical disc apparatus includes an emitter which emits a laser beam to a optical disc, a divided photodetector including a first dived portion and a second dived portion disposed in a light path of the reflected beam from the optical disc, and producing a first p... | 11/29/2011 |
| 7966629 | Optical disc device An optical disc device includes a conductive member of a bezel assembly with openings formed by a plurality of parting lines, and gaskets are attached to the upper and lower sides of the conductive member using conductive adhesion bond. ... | 06/21/2011 |
| 7864639 | Optical disk apparatus An optical disk apparatus includes a signal detection unit which detects a signal corresponding to a wobbling guide groove formed on an optical disk, a timing signal generating unit which generates first and second timing signals in accordance with an amplitude leve... | 01/04/2011 |
| 7839754 | Optical head and optical disk device An optical head includes a first laser diode configured to generate a laser beam with a wave length of λ1, a second laser diode configured to generate a laser beam with a shorter wave length of λ2 than the wave length λ1, a collimator lens ar... | 11/23/2010 |
| 7808862 | Optical disc device and recording method An optical disc device includes a recording section which records recording information in an optical disk, a reproducing section to reproduce the information recorded in the optical disk, a storage section which stores information Po−n to Po+n or Pb−n to Pb+n o... | 10/05/2010 |
| 7787341 | Optical disk device and method for determining disk type An optical disk device includes a pickup head, and a controller which controls the pickup head. The controller subtracting a second measured value determined from an amplitude value of the tracking error signal when the pickup head irradiates a second area of the op... | 08/31/2010 |
| 7746739 | Writing power determining method and optical disc apparatus A recording power determining method comprises writing data consecutively into a plurality of test blocks of an optical disc while changing recording power in such a manner that the arrangement of recording power values is distributed over the arrangement of the tes... | 06/29/2010 |
| 7715288 | Optical disk apparatus and data read-out control method An optical disk apparatus includes an optical pickup head (PUH) which outputs a laser beam through an objective lens. When a control unit receives an instruction to halt data read-out from an optical disk, the control unit moves the PUH to a predetermined position, ... | 05/11/2010 |
| 7711020 | Optical pick-up apparatus and optical disk apparatus An exemplary optical pick-up apparatus of the invention comprises: an optical base; a collimator lens provided on the optical base; a laser source disposed adjacent the collimator lens on the optical base and emitting light that produces heat; and temperature gradie... | 05/04/2010 |
| 7706217 | Optical disc apparatus An optical disc apparatus includes an emitter which emits a laser beam to a optical disc, a divided photodetector including a first divided portion and a second divided portion disposed in a light path of the reflected beam from the optical disc, and producing a fir... | 04/27/2010 |
| 7669210 | Optical pickup device and optical disk device using the same A guide portion provided in parallel with a main shaft is formed integrally with a resin-made mechanism chassis. A slidable member is provided between a guide receiver portion of a pickup and the guide portion. The guide receiver portion is provided with a spring me... | 02/23/2010 |
| 7503494 | Optical disc apparatus and barcode reading method An optical disc apparatus which reads a barcode recorded on a predetermined area of an optical disc, includes a reading unit which reads the barcode from a plurality of tracks on the predetermined area of the optical disc, and a barcode data decoding unit which deco... | 03/17/2009 |
| 7411793 | Optical disk device An optical disk device of the present invention has a main PC board carrying a semiconductor element and attached at the rear of a drawer to efficiently dissipate a heat generated from the semiconductor element. The drawer is formed of a material having good thermal... | 08/12/2008 |
| 7334245 | Optical disk apparatus An optical disk drive is provided with an optical pickup and an optical sensor. The optical pickup is used for reading main information from an optical disk. The optical sensor is located in the range of R17 to R23 and used for reading sub information ... | 02/19/2008 |
| 7328444 | Shaft support mechanism of optical disk drive and skew adjustment mechanism of optical disk drive A skew adjustment mechanism of an optical disk drive includes: a pair of rod-shaped guide shafts 32a and 32b that hold an optical pick-up unit 31 therebetween and guide the optical pick-up unit; four fixing members each having a pa... | 02/05/2008 |
| 7315452 | Optical disk device An optical disk device of the present invention has a main PC board carrying a semiconductor element and attached at the rear of a drawer to efficiently dissipate a heat generated from the semiconductor element. The drawer is formed of a material having good thermal... | 01/01/2008 |
