Optical recording/reproducing apparatus including means for sync

Details Optical recording/reproducing apparatus including means for sync Optical recording/reproducing apparatus including means for sync

1992-07-02

1993-08-03

McElheny, Jr., Donald E.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 59, G11B 700

Patent

active

052335909

ABSTRACT:
The present invention relates to an optical recording/reproducing apparatus that can be suitably adapted to a magneto-optical disc apparatus which records data on, for example, a magneto-optical disc or reproduces data therefrom. An auxiliary synchronizing signal (3h) is recorded at a predetermined position on a recording medium, (1) on which a synchronizing signal (2a) is periodically prerecorded in advance, by the same recording means as the recording means for recording data between the synchronizing signals (2a) and (2a) and a phase of a data read clock signal of which the phase is locked by the synchronizing signal is controlled on the basis of the auxiliary synchronizing signal (3h). Thus, data can be properly read from the recording medium (1).

REFERENCES:
patent: 4387407 (1983-06-01), Wine
patent: 4564929 (1986-01-01), Yonezawa et al.
patent: 4748611 (1988-05-01), Tsuyoshi et al.
patent: 4780759 (1988-10-01), Matsushima et al.
patent: 5012460 (1991-04-01), Popovich et al.

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