发明名称 Time critical and non-time critical tasks control system for an optical disk using first and second processors
摘要 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.
申请公布号 US6741530(B2) 申请公布日期 2004.05.25
申请号 US20010951339 申请日期 2001.09.10
申请人 DPHI ACQUISITIONS, INC. 发明人 TURNER CHRISTOPHER J.;KADLEC RON J.;WATT CHARLES R.;WACH HANS B.
分类号 G11B7/085;G11B7/09;G11B7/095;G11B7/12;G11B7/13;G11B7/135;G11B19/28;(IPC1-7):G11B21/08 主分类号 G11B7/085
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