| Patent | Date |
|---|
Optical disc recording/reproduction apparatus and method
Grant RE40,371 - Ichimura , et al. June 10, 2 | 2008-06-10 |
Optical head and recording/reproducing device
Grant 6,721,259 - Yamamoto , et al. April 13, 2 | 2004-04-13 |
Focus controlling apparatus and method, and optical disc drive
Grant 6,674,696 - Ichimura , et al. January 6, 2 | 2004-01-06 |
Optical pickup for discriminating between and reading different types of optical discs
Grant 6,366,543 - Uemura , et al. April 2, 2 | 2002-04-02 |
Optical recording medium and optical disk device
Grant 6,353,592 - Kashiwagi , et al. March 5, 2 | 2002-03-05 |
Optical disc recording/reproduction apparatus having a lens group, focus, servo, and jog mode adjustment
Grant 6,292,453 - Ichimura , et al. September 18, 2 | 2001-09-18 |
Optical pickup for discriminating between and reading different types of optical discs
App 20010019520 - Uemura, Kamon ; et al. | 2001-09-06 |
Optical pickup for discriminating between and reading different types of optical discs
Grant 6,222,803 - Uemura , et al. April 24, 2 | 2001-04-24 |
Optical recording medium recording and reproducing apparatus and optical pickup device
Grant 6,005,834 - Maeda , et al. December 21, 1 | 1999-12-21 |
Apparatus for reproducing sound signals recorded on a motion picture film with digital sound track
Grant 5,841,513 - Yoshimura , et al. November 24, 1 | 1998-11-24 |
Lens designing method and objective lens apparatus with two lenses
Grant 5,828,453 - Yamamoto , et al. October 27, 1 | 1998-10-27 |
Optical pickup device for light collection onto an optical recording medium
Grant 5,774,281 - Maeda , et al. June 30, 1 | 1998-06-30 |
optical pickup apparatus
Grant 5,764,613 - Yamamoto , et al. June 9, 1 | 1998-06-09 |
Optical pick-up device
Grant 5,712,842 - Yamamoto , et al. January 27, 1 | 1998-01-27 |
Optical disk pickup device with focusing correction by electrostriction
Grant 5,513,158 - Ohsato April 30, 1 | 1996-04-30 |
Optical plate for correcting comatic aberration
Grant 5,442,615 - Ohsato , et al. August 15, 1 | 1995-08-15 |
Laser light generating apparatus
Grant 5,303,250 - Masuda , et al. April 12, 1 | 1994-04-12 |
Tracking control method and apparatus for an optical disc system
Grant 5,191,571 - Fukumoto , et al. March 2, 1 | 1993-03-02 |
Optical recording and/or reproducing apparatus
Grant 5,159,589 - Ohsato October 27, 1 | 1992-10-27 |
Tracking error detecting system for optical head
Grant 4,775,968 - Ohsato October 4, 1 | 1988-10-04 |
Tracking error detecting apparatus for optical head
Grant 4,766,585 - Fukumoto , et al. August 23, 1 | 1988-08-23 |
Signal recording and reproducing apparatus for an opto-magnetic disk
Grant 4,733,385 - Henmi , et al. March 22, 1 | 1988-03-22 |
Focussing error detecting apparatus employing a composite lens
Grant 4,631,397 - Ohsato , et al. December 23, 1 | 1986-12-23 |
Focussing error detecting apparatus for use in an optical disc reproducing device, an auto-focus camera or image-pickup device
Grant 4,612,437 - Ohsato September 16, 1 | 1986-09-16 |
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