Data reproduction arrangement for recalling data readable with a

Details Data reproduction arrangement for recalling data readable with a Data reproduction arrangement for recalling data readable with a

1989-02-09

1991-07-30

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4432, 369 54, 369 58, 369124, 2502015, G11B 700, G11B 795

Patent

active

050365053

ABSTRACT:
A data reproduction arrangement for recalling data that can be read out with an optical pickup from data storage tracks of a recorded medium, in which a beam of light is focused on the recorded medium. The beam is advanced along the data storage tracks by a tracking circuit, and a photodetector receives the beam of light reflected from the recorded medium. A direct-current coupled data signal is generated by the photodetector, and has an upper and lower envelope which are processed to obtain a criterion for controlling the focusing circuit and/or tracking circuit. The lower or upper envelope can be clamped to a predetermined level.

REFERENCES:
patent: 4572965 (1986-03-01), Yamamura
patent: 4637003 (1987-01-01), Yokoyawa
patent: 4703468 (1987-10-01), Baba et al.

Affiliated with

Also associated with

Rating

Data reproduction arrangement for recalling data readable with a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data reproduction arrangement for recalling data readable with a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data reproduction arrangement for recalling data readable with a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1547097