Apparatus for reproducing information from an optically readable

Details Apparatus for reproducing information from an optically readable Apparatus for reproducing information from an optically readable

1984-02-09

1986-12-09

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 33, 369 50, 369109, G11B 700

Patent

active

046284974

ABSTRACT:
An apparatus for reading an optical record carrier on which information has been digitally recorded as a track of pit and land areas. The apparatus detects track-loss by comparing the amplitudes of the signals obtained from read-out of the pit areas with the signals obtained from read-out of the land areas. The signals are sampled in synchronism with the frequency of the digital bits stored on the record carrier and are processed digitally.

REFERENCES:
patent: 4488275 (1984-12-01), Ceshkovsky

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