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

1984-03-14

1989-03-14

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 50, 250201, O11B 700

Patent

active

048130311

ABSTRACT:
An apparatus is described for reading an optically readable record carrier, in which apparatus various control signals are derived from signals obtained by sampling the signals supplied by two optical-detector halves with the bit frequency both during the intermediate areas and the pits, the samples taken during the pits being processed separately from the samples taken during the intermediate areas.
Preferably, only one sample is taken for each pit and each intermediate area, namely only if the pit or intermediate area is longer than a specific number of clock periods.

REFERENCES:
patent: 4532522 (1985-07-01), Tsunoda et al.
patent: 4535431 (1985-08-01), Bricot et al.
patent: 4550394 (1985-10-01), Maeda et al.
patent: 4561082 (1985-12-01), Gerard et al.
patent: 4628497 (1986-12-01), Bierhoff

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