Information recording/reproducing apparatus for recording and re

Details Information recording/reproducing apparatus for recording and re Information recording/reproducing apparatus for recording and re

1993-03-19

1995-09-19

Young, W. R.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 54, 369 58, 369124, G11B 700

Patent

active

054522790

ABSTRACT:
The recording scheme of an optical disk is initially determined by a cartridge identifier housing the optical disk. The optical disk is then rotated at a rotational speed corresponding to the initially determined recording scheme, and a signal processing circuit is switched. Management data recorded on the optical disk is read to also determine the recording scheme, thereby improving the reliability of the determination. When no management data can be read, a recording scheme and associated rotational speed are changed. The management data representing the recording scheme is then read according to the changed recording scheme. A medium type determined based on the management data has priority over that of the medium type obtained by the identifier of the cartridge.

REFERENCES:
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patent: 4962494 (1990-10-01), Kimura
patent: 5042020 (1991-08-01), Endo
patent: 5142626 (1992-08-01), Arnold et al.
patent: 5241524 (1993-08-01), Lee
patent: 5257253 (1993-10-01), Otsubo et al.
patent: 5272693 (1993-12-01), Fujisawa
patent: 5289451 (1994-02-01), Ashinuma et al.

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