| Patent | Date |
|---|
Data recording/reproducing system using optical disk apparatus
Grant 7,496,773 - Umehara , et al. February 24, 2 | 2009-02-24 |
Electronic apparatus and storage medium reading out device housed in electronic apparatus
App 20070205281 - Tsuyuguchi; Hiroshi ; et al. | 2007-09-06 |
Data recording/reproducing system using optical disk apparatus
App 20060067188 - Umehara; Shinji ; et al. | 2006-03-30 |
Magnetic disk apparatus
Grant 6,801,381 - Iwai , et al. October 5, 2 | 2004-10-05 |
Magnetic disk apparatus
App 20010048569 - Iwai, Hiroshi ; et al. | 2001-12-06 |
Disk drive or like peripheral storage device adapted for firmware upgrading, self-testing, etc.
Grant 6,289,397 - Tsuyuguchi , et al. September 11, 2 | 2001-09-11 |
Disk recording method and apparatus providing for realtime monitoring
App 20010006502 - Tsuyuguchi, Hiroshi ; et al. | 2001-07-05 |
Magnetic disc recording/reproducing apparatus with semiconductor memory card recording/reproducing device
Grant D443,867 - Tsuyuguchi , et al. June 19, 2 | 2001-06-19 |
Magnetic disc recording/reproducing apparatus with semiconductor memory card recording/reproducing device
Grant D434,023 - Tsuyuguchi , et al. November 21, 2 | 2000-11-21 |
Disk apparatus having a power consumption reducing mechanism
Grant 5,442,608 - Umeda , et al. August 15, 1 | 1995-08-15 |
Apparatus for constant angular velocity reading of constant linear velocity disks
Grant 5,425,014 - Tsuyuguchi , et al. June 13, 1 | 1995-06-13 |
Power saving system for rotating disk data storage apparatus
Grant 5,408,369 - Miura , et al. April 18, 1 | 1995-04-18 |
Method and apparatus for discriminating between unformatted magnetic disk assemblies of two different storage capacities
Grant 5,329,510 - Tsuyuguchi , et al. July 12, 1 | 1994-07-12 |
System for eliminating noise arising from difference in polarity of magnetization by tunnel erase heads
Grant 5,309,296 - Nagase , et al. May 3, 1 | 1994-05-03 |
Floppy disk control unit and apparatus having a floppy disk control unit
Grant 5,293,601 - Tsuyuguchi , et al. March 8, 1 | 1994-03-08 |
Signal selecting circuit which selectively outputs predetermined signal to host computer compatible with plurality of computer hardware types and disk drive having such signal selecting circuit
Grant 5,293,625 - Miura , et al. March 8, 1 | 1994-03-08 |
Power saving system for rotating disk data storage apparatus
Grant 5,283,702 - Tsuyuguchi , et al. February 1, 1 | 1994-02-01 |
Magnetic disc apparatus with a cosine equalizer and specific gap length head
Grant 5,032,934 - Aikawa , et al. July 16, 1 | 1991-07-16 |
Optical recording and reproducing apparatus for verifying correct writing of information signal
Grant 4,935,914 - Morita , et al. June 19, 1 | 1990-06-19 |
Optical permitting record/playback from both sides of an optical disk
Grant 4,926,409 - Tsuyuguchi , et al. May 15, 1 | 1990-05-15 |
Magneto-optic recording apparatus for recording information selectively on both sides of the recording medium
Grant 4,926,403 - Tsuyuguchi , et al. May 15, 1 | 1990-05-15 |
Circuit arrangement for the determination of the constant speed rotation of a disklike record medium
Grant 4,809,119 - Tsuyuguchi , et al. February 28, 1 | 1989-02-28 |
Circuit arrangement and method for saving power in magnetic disk apparatus without head displacement
Grant 4,783,706 - Shoji , et al. November 8, 1 | 1988-11-08 |
Data transfer apparatus with a disklike record medium and a method of operation therefore
Grant 4,782,406 - Shoji , et al. November 1, 1 | 1988-11-01 |
Circuit arrangement for inhibiting writing on a magnetic disk during the settling time of a transducer head
Grant 4,777,545 - Shoji , et al. October 11, 1 | 1988-10-11 |
Power saving circuit arrangement for an apparatus for data transfer with flexible magnetic disk or the like
Grant 4,700,243 - Tsuyuguchi , et al. October 13, 1 | 1987-10-13 |
Stepping motor drive system and method capable of stopping the rotor in a required angular position
Grant 4,697,129 - Enami , et al. September 29, 1 | 1987-09-29 |
Power-saving data transfer apparatus with a flexible magnetic disk or the like
Grant 4,688,112 - Shoji , et al. August 18, 1 | 1987-08-18 |
Information processing apparatus having locking means permitting ready detachment of the magnetic disk drive assembly
Grant 4,688,131 - Noda , et al. August 18, 1 | 1987-08-18 |
Stepping motor drive method and system capable of stopping the rotor in a required angular position
Grant 4,677,359 - Enami , et al. June 30, 1 | 1987-06-30 |
Data transfer apparatus for use with a flexible magnetic disk or the like
Grant 4,658,307 - Tsuyuguchi , et al. April 14, 1 | 1987-04-14 |
Power-saving data transfer apparatus with a flexible magnetic disk or the like
Grant 4,626,942 - Shoji , et al. December 2, 1 | 1986-12-02 |
Apparatus for selective retrieval of information streams or items
Grant 4,321,635 - Tsuyuguchi March 23, 1 | 1982-03-23 |
| 