Optical signal processing system with variable gain stage of ser

Details Optical signal processing system with variable gain stage of ser Optical signal processing system with variable gain stage of ser

1984-09-13

1986-09-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

369 44, G01J 120

Patent

active

046148639

ABSTRACT:
A digital audio disc player is equipped with a tracking/focus servo mechanism which automatically controls the tracking and focusing of a light beam projected on a disc. The vibration of an automobile or other vehicle containing the player is detected so that, when there is a significant amount of vibration, the control sensitivity of the tracking/focus servo mechanism is increased to prevent the occurrence of tracking and focusing errors.

REFERENCES:
patent: 4344165 (1982-08-01), Akiyama
patent: 4475182 (1984-10-01), Hosaka

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