Optical pickup actuator circuit having coil protection feature

Details Optical pickup actuator circuit having coil protection feature Optical pickup actuator circuit having coil protection feature

2007-01-16

2007-01-16

Miller, Brian E. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044290

Reexamination Certificate

active

10066885

ABSTRACT:
An optical pickup actuator circuit includes: a lens holder2supported so as to be slidable along a support shaft and rotatable around the support shaft and for holding an objective lens8so that the objective lens8forms an image of a light beam on a desired track on an information recording surface of an optical disk; a focusing coil7attached to the lens holder2; and a focusing magnet fixedly disposed so as to be opposite to the focusing coil7; wherein two diodes D1and D2are parallel-connected in a forward direction between an input end7aof the focusing coil7and the ground so that an input voltage not lower than a predetermined voltage is led to the ground by the two diodes D1and D2.

REFERENCES:
patent: 4688202 (1987-08-01), Mukai et al.
patent: 5029151 (1991-07-01), Shikichi
patent: 5097361 (1992-03-01), Childers et al.
patent: 5189638 (1993-02-01), Kimura
patent: 5210732 (1993-05-01), Suenaga et al.
patent: 5278818 (1994-01-01), Zucker et al.
patent: 5687154 (1997-11-01), Tsuchiya et al.
patent: 58178676 (1983-10-01), None
patent: 4-23235 (1992-01-01), None
patent: 9-237428 (1997-09-01), None
Machine translation of Japanese Patent Application Laid-Open No. 09-237428.
Japanese Patent Abstract; Publication No. 09-237428; published on Dec. 9, 1997.
Japanese Patent Abstract; Publication No. 04-023235; published on Jan. 27, 1992.

Affiliated with

Also associated with

Rating

Optical pickup actuator circuit having coil protection feature does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical pickup actuator circuit having coil protection feature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup actuator circuit having coil protection feature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3767724