Apparatus for and method of reading datas recorded on an optical

Details Apparatus for and method of reading datas recorded on an optical Apparatus for and method of reading datas recorded on an optical

1993-09-24

1995-03-21

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 369120, 369 4437, 369 4441, G11B 7095

Patent

active

054003121

ABSTRACT:
An apparatus reads data signal recorded on an optical disc on which a gathering track including n recording tracks and a guard track neighboring to the gathering track are spirally formed. The apparatus includes: light beam irradiating unit for irradiating (n+1) light beams onto boundaries of the n recording tracks and the guard track, photodetecting unit for receiving (n+1) light beams reflected by the surface of the optical disc and producing (n+1) track boundary data signals, and computing unit for calculating the (n+1) track boundary data signals to produce n read-out data signals corresponding to the data signals recorded on the n recording tracks.

REFERENCES:
patent: 5235584 (1993-08-01), Yoshio et al.

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