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Class Information
Number: 720/666
Name: Dynamic optical information storage or retrieval > Dynamic mechanism optical subsystem > Having power driven optical transducer assembly > Linear transducer assembly movement > Voice coil
Description: Subject matter wherein a voice coil provides motive power for the linearly moving optical transducer assembly during track changing.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7188348 |
Optical disc drive apparatus and method |
Mar. 6, 2007 |
| 6942741 |
Iron alloy strip for voice coil motor magnetic circuits |
Sep. 13, 2005 |
| 6404727 |
Electromagnetic rotary actuator |
Jun. 11, 2002 |
| 6285530 |
Guided driving device for a moving head |
Sep. 4, 2001 |
| 6252747 |
Disk apparatus having an improved head carriage structure |
Jun. 26, 2001 |
| 5848049 |
Disc player with parallel objective lenses |
Dec. 8, 1998 |
| 5825745 |
Data storage-playback apparatus and optical disk apparatus |
Oct. 20, 1998 |
| 5818666 |
Linear drive motor apparatus for adjusting the relative position between and second yokes of a pair of magnetic circuits |
Oct. 6, 1998 |
| 5812517 |
Optical head driver |
Sep. 22, 1998 |
| 5745470 |
Head moving apparatus which cancels leakage flux |
Apr. 28, 1998 |
| 5617402 |
Access and tracking device for an optical disc |
Apr. 1, 1997 |
| 5495455 |
Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position |
Feb. 27, 1996 |
| 5491684 |
Optical disk unit |
Feb. 13, 1996 |
| 5485434 |
Magneto-optical disk apparatus for recording and/or reproducing information using modulated and constant magnetic field applying devices |
Jan. 16, 1996 |
| 5463612 |
Objective lens drive apparatus used in optical information recording/reproducing apparatus |
Oct. 31, 1995 |
| 5442605 |
Head driving device with carriage assembly centroid position set where servo frequency is not delayed |
Aug. 15, 1995 |
| 5278820 |
Apparatus and method for a radial access mechanism for a disk player/recorder |
Jan. 11, 1994 |
| 5243919 |
Magnetic levitation actuator |
Sep. 14, 1993 |
| 5193080 |
Magneto-optical recording medium and apparatus |
Mar. 9, 1993 |
| 5138605 |
Low-profile radial access mechanism for disk recording/playback apparatus, with optical head mounted on a carriage |
Aug. 11, 1992 |
| 5136446 |
Apparatus for movably supporting and positioning a transducer |
Aug. 4, 1992 |
| 5134608 |
Disk drive crash stop |
Jul. 28, 1992 |
| 5130972 |
Optical recording and reproducing apparatus |
Jul. 14, 1992 |
| 5130873 |
Head positioning apparatus for disc unit |
Jul. 14, 1992 |
| 5124971 |
Optical head driving device |
Jun. 23, 1992 |
| 5121016 |
Linear motor |
Jun. 9, 1992 |
| 5023861 |
Single stage tracking actuator apparatus for optical beam information storage drive system |
Jun. 11, 1991 |
| 5016238 |
Linear actuator for radial access in disk recorder/player |
May. 14, 1991 |
| 4977554 |
Slider-position detector for detecting the position of the slider of a disk player |
Dec. 11, 1990 |
| 4956735 |
Actuator magnetic circuit |
Sep. 11, 1990 |
| 4942562 |
Pickup actuator for disk-type media |
Jul. 17, 1990 |
| 4908816 |
Voice coil motor with linearized force constant |
Mar. 13, 1990 |
| 4890277 |
Carriage driving apparatus for a disk player |
Dec. 26, 1989 |
| 4823336 |
Optical disk drive |
Apr. 18, 1989 |
| 4763314 |
Linear actuator for an optical disk storage apparatus |
Aug. 9, 1988 |
| 4740946 |
Data converter pickup carriage assembly |
Apr. 26, 1988 |
| 4704712 |
Low-friction slide apparatus for optical disc translation stage |
Nov. 3, 1987 |
| 4698798 |
Device for translating a slide |
Oct. 6, 1987 |
| 4620301 |
Recording disk drive unit |
Oct. 28, 1986 |
| 4613962 |
Tracking device with linear motor |
Sep. 23, 1986 |
| 4583212 |
Record/playback head positioning device for optical disc apparatus |
Apr. 15, 1986 |
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