Method for controlling data read speed of optical disc

Details Method for controlling data read speed of optical disc Method for controlling data read speed of optical disc

2006-01-23

2009-06-09

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S094000

Reexamination Certificate

active

07545714

ABSTRACT:
Embodiments of method and apparatus for controlling a data read speed of an optical disc can reproduce data with greater accuracy. An embodiment of a method for controlling data read speed can determine whether the optical disc is finalized or in an open state, and a playback speed can be controlled by the determined result. If the optical disc is in an open state, a data-recorded section can be divided into at least two areas, and different speeds are applied to individual areas. If the optical disc is finalized, a relatively high speed or maximum speed is applied to all areas of the optical disc. Therefore, data of an unfinalized open-state disc can be reproduced at high speed. Further, increased resistance to surface vibration, eccentricity, or defects of the optical disc can be achieved.

REFERENCES:
patent: 5265081 (1993-11-01), Shimizume et al.
patent: 5926453 (1999-07-01), Muramatsu et al.
patent: 6704252 (2004-03-01), Aso et al.
patent: RE39491 (2007-02-01), Ota et al.

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