Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2006-05-02
2006-05-02
Huber, Paul W. (Department: 2653)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S124010
Reexamination Certificate
active
07038988
ABSTRACT:
A system, method, and apparatus for coordinating tasks in a control system for an optical disc drive for optical media with a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. The optical disc drive includes a first processor operable to communicate with a second processor, wherein the first processor includes instructions for performing non-time-critical tasks, and the second processor includes instructions for performing time-critical tasks, such as reading from and writing to optical media in the disc drive. The first processor monitors the status of the time critical tasks in the second processor and transmits commands to perform operations in the second processor. The first processor also controls power mode, manages recovery from errors, controls focus, tracking/seeking, spin, physical sector address (PSA), a laser, adjusts gains, and monitor cartridge load/eject. The first processor can be used to perform other tasks while it is waiting to receive a notice of a new command, a notify event, or a performance event.
REFERENCES:
patent: 5745458 (1998-04-01), Oliver et al.
patent: 5875158 (1999-02-01), Schell
patent: 6535463 (2003-03-01), Nishino et al.
Kadlec Ron J.
Turner Christopher J.
Watt Charles R.
DPHI Acquisitions, Inc.
Hallman Jon
Huber Paul W.
MacPherson Kwok Chen & Heid
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