Adaptive level-cutting method of CD-ROM drive's radio...

Details Adaptive level-cutting method of CD-ROM drive's radio... Adaptive level-cutting method of CD-ROM drive's radio...

2007-09-18

2007-09-18

Psitos, A M (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S059210

Reexamination Certificate

active

10682115

ABSTRACT:
An adaptive level-cutting method of a radio frequency ripple signal for a CD-ROM drive is proposed. A digital signal processor is added to accomplish adaptive cutting of the central level of the radio frequency ripple signal for generating an accurate radio frequency zero cross signal, thereby accomplishing tracking control, short seeking control and long seeking control of an optical disc when regions with data and regions without data of the optical disc are staggered.

REFERENCES:
patent: 6324135 (2001-11-01), Kim et al.
patent: 6434093 (2002-08-01), Park
patent: 6728184 (2004-04-01), Chan
patent: 6934234 (2005-08-01), Lai

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