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Class Information
Number: 720/659
Name: Dynamic optical information storage or retrieval > Dynamic mechanism optical subsystem > Having power driven optical transducer assembly
Description: Subject matter wherein the optical transducer assembly of the optical recording or reproducing system is driven in order to access tracks of an optical storage medium.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7480924 |
Magnetic recording and reproducing device and magnetic recording medium |
Jan. 20, 2009 |
| 7411793 |
Optical disk device |
Aug. 12, 2008 |
| 7315452 |
Optical disk device |
Jan. 1, 2008 |
| 7310206 |
Magnetic thin film head with heat-assisted write section and hard disk drive incorporating same |
Dec. 18, 2007 |
| 7307923 |
Electro magnetic field generating element, information recording and reproducing head and information recording and reproducing device |
Dec. 11, 2007 |
| 7242644 |
Optical disk drive, and a method of assembling it |
Jul. 10, 2007 |
| 7191456 |
Optical pickup head feeding device |
Mar. 13, 2007 |
| 7184371 |
Optical pickup driver having piezoelectric elements of different voltages at start and steady state |
Feb. 27, 2007 |
| 7155732 |
Heat assisted magnetic recording head and method |
Dec. 26, 2006 |
| 7106668 |
Disk drive apparatus |
Sep. 12, 2006 |
| 7080390 |
Power transmitting device for stepping motor and disk drive provided with the same |
Jul. 18, 2006 |
| 7069568 |
Record head for thermally assisted magnetic recording |
Jun. 27, 2006 |
| 7069569 |
Near-field optical head system with integrated slider and laser |
Jun. 27, 2006 |
| 7047540 |
Gear rack arrangement having resiliently braced gear racks and anti-detachment means |
May. 16, 2006 |
| 7003787 |
Urging structure for an output shaft of a drive motor |
Feb. 21, 2006 |
| 6901598 |
Tilt focus method and mechanism for an optical drive |
May. 31, 2005 |
| 6854125 |
Magnetic head |
Feb. 8, 2005 |
| 6801493 |
Optical pickup device |
Oct. 5, 2004 |
| 6795970 |
Disk loading apparatus with floatable clamp means |
Sep. 21, 2004 |
| 6738334 |
Optical memory apparatus having a base with a unitary and integral optical component mounting portion and a precision mounting surface for mounting an optical component |
May. 18, 2004 |
| 6707782 |
Information recording/reading apparatus having adjustable stopper |
Mar. 16, 2004 |
| 6665253 |
Optical disk control mechanism |
Dec. 16, 2003 |
| 6590736 |
Tape or disc record player equipped with standby power-saving means |
Jul. 8, 2003 |
| 6381207 |
Optical pickup movable to control beam shift and field angle in an optical disk drive |
Apr. 30, 2002 |
| 6353590 |
Media stabilization for laser servowriting |
Mar. 5, 2002 |
| 6327236 |
Apparatus for recording and/or reproducing information and/or from optical information record disk |
Dec. 4, 2001 |
| 6288994 |
Apparatus for recording and/or reproducing information and/or from optical information record disk |
Sep. 11, 2001 |
| 5828512 |
Information processing apparatus having a floating-type head |
Oct. 27, 1998 |
| 5828642 |
Device and method for reducing power consumption in a disk drive |
Oct. 27, 1998 |
| 5796697 |
Disk apparatus |
Aug. 18, 1998 |
| 5677904 |
Disc player |
Oct. 14, 1997 |
| 5548575 |
Transverse control device for optical head having a pulse-driven coarse positioning actuator and a precision actuator |
Aug. 20, 1996 |
| 5548568 |
Optical-information-recording apparatus having fine and rough driving control |
Aug. 20, 1996 |
| 5453972 |
Optical disk apparatus |
Sep. 26, 1995 |
| 5357498 |
Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated |
Oct. 18, 1994 |
| 5313445 |
Reproducing apparatus with suspension supporting a floating-type head with a bevelled slider |
May. 17, 1994 |
| 5175724 |
Capacitance disc information retrieval system |
Dec. 29, 1992 |
| 4870635 |
Precision measurement and positioning system for disk storage system |
Sep. 26, 1989 |
| 4262912 |
Phonograph tone arm control device |
Apr. 21, 1981 |
| 4004081 |
Optical videodisc pickup arm with moving coil drive means |
Jan. 18, 1977 |
| 3977684 |
Playback apparatus, in particular a video player |
Aug. 31, 1976 |
| 3947888 |
Hydrodynamic bearing head providing constant spacing |
Mar. 30, 1976 |
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