Optical recording/reproducing method and apparatus for optical d

Details Optical recording/reproducing method and apparatus for optical d Optical recording/reproducing method and apparatus for optical d

1987-10-20

1989-08-01

Richardson, Robert L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 54, 369 58, 360 25, 360 29, G11B 700

Patent

active

048539155

ABSTRACT:
An optical disk is provided with a dedicated track area for recording optical conditions for read and write operations. The apparatus includes different types of demodulating circuits for allowing any type of demodulation to be adopted. After parameters, recorded on the dedicatad track area through phase encoding demodulation, are read out, the demodulating circuit compatible with the modulation type adopted in recording the data is selected for demodulation of the data.

REFERENCES:
patent: 4674071 (1987-06-01), Okumura et al.
patent: 4769802 (1988-09-01), Tatsuguchi et al.

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