Optical disc using tracking and clocking prepits and address pre

Details Optical disc using tracking and clocking prepits and address pre Optical disc using tracking and clocking prepits and address pre

1987-01-23

1988-08-02

Psitos, Aristotelis M.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369275, 369 32, G11B 700

Patent

active

047617756

ABSTRACT:
An optical disc and an apparatus using it. Prepits are preformed on a surface of the disc at a pitch to facilitate tracking thereof. The prepits are used for both tracking and clock generation. A processed tracking signal and a processed clocking signal are generated from signals generated solely from the preformed prepits.

REFERENCES:
patent: 3673412 (1972-06-01), Olson
patent: 4142409 (1979-02-01), Hedlund et al.
patent: 4363116 (1982-12-01), Kleuters et al.
patent: 4364118 (1982-12-01), Maeda et al.
patent: 4375088 (1983-02-01), de Hann et al.
Neues Aus Der Technik, No. 5, Oct. 79, Wurzburg (DE), Article No. 542, Synchronization.
Translation only of JP 56-22227.

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