| Patent | Date |
|---|
Disk drive with position detection
Grant 7,394,607 - Ohno , et al. July 1, 2 | 2008-07-01 |
Disk drive with position detection
App 20070058281 - Ohno; Jun ; et al. | 2007-03-15 |
Information recording medium with clock information therein
Grant 5,959,943 - Yonezawa , et al. September 28, 1 | 1999-09-28 |
Magneto optical recording medium apparatus and method utilizing light pulse magnetic modulation recording
Grant 5,726,955 - Yonezawa , et al. March 10, 1 | 1998-03-10 |
Magnetic recording and reproducing apparatus with thermal asperity correction
Grant 5,715,110 - Nishiyama , et al. February 3, 1 | 1998-02-03 |
Method and apparatus for optimizing the recording and reproducing of information from magnetic disks
Grant 5,657,176 - Moribe , et al. August 12, 1 | 1997-08-12 |
Magnetic recording drive having arrangements for average useful life of magnetorestive effects sensors
Grant 5,572,379 - Aoi , et al. November 5, 1 | 1996-11-05 |
Magnetic recording and reproducing apparatus with reproducing head of magnetoresistive type having control of magnetic bias level
Grant 5,367,411 - Nishiyama , et al. November 22, 1 | 1994-11-22 |
Digital magnetic writing and reading apparatus
Grant 5,337,198 - Nishiyama , et al. August 9, 1 | 1994-08-09 |
Method of recording and reproduction of information using a recording medium available for information overlap recording, a recording medium and a recording and reproducing apparatus using the method
Grant 5,218,599 - Tsuyoshi , et al. June 8, 1 | 1993-06-08 |
Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk
Grant 5,193,034 - Tsuyoshi , et al. March 9, 1 | 1993-03-09 |
Magneto-optical data recording system
Grant 5,170,383 - Yonezawa , et al. December 8, 1 | 1992-12-08 |
High speed seek sector servo magnetic disk drive unit
Grant 5,132,854 - Tsuyoshi , et al. July 21, 1 | 1992-07-21 |
Magnetic disk drive
Grant 5,083,226 - Shiiki , et al. January 21, 1 | 1992-01-21 |
Light spot position control system and method by sampled servo
Grant 4,872,152 - Tsuyoshi , et al. October 3, 1 | 1989-10-03 |
Light spot position control system and method by sampling servo
Grant 4,785,442 - Ohtake , et al. November 15, 1 | 1988-11-15 |
Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
Grant 4,748,609 - Yonezawa , et al. May 31, 1 | 1988-05-31 |
Information recording medium and method for reproducing the same
Grant 4,748,611 - Tsuyoshi , et al. May 31, 1 | 1988-05-31 |
Method and apparatus for composite wobbled and push-pull tracking servo system
Grant 4,707,816 - Yonezawa , et al. November 17, 1 | 1987-11-17 |
Apparatus and record carrier for optically writing information
Grant 4,703,408 - Yonezawa , et al. October 27, 1 | 1987-10-27 |
Information recording and reproducing apparatus with tracking control by sampling
Grant 4,564,929 - Yonezawa , et al. January 14, 1 | 1986-01-14 |
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