Protection circuit for optical disc players

Details Protection circuit for optical disc players Protection circuit for optical disc players

1989-07-05

1991-10-22

Richardson, Robert L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 54, 369 79, 369233, 369116, G11B 700

Patent

active

050602209

ABSTRACT:
A protection circuit for optical disc players which can prevent the unnecessary radiation of laser beams due to a malfunction of the player. The circuit includes a laser radiating and detecting device which detects the laser beams reflecting from an optical disc and a driving stage which receives the detected signal from the laser radiating and detecting device and controls a microcomputer to cut out the supply of a driving voltage to the laser radiating and detecting device when the optical disc is not placed on a disc table.

REFERENCES:
patent: 4032971 (1977-06-01), Camerik
patent: 4499571 (1985-02-01), Yokota

Affiliated with

Also associated with

Rating

Protection circuit for optical disc players does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protection circuit for optical disc players, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection circuit for optical disc players will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-115397