Patent Number: 7,272,092

Title: Adaptive level-cutting method of CD-ROM drive's radio frequency ripple signal

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.

Inventors: Wu; Jan Tang (Chia I, TW)

Assignee: Ali Corporation

International Classification: G11B 7/00 (20060101)

Expiration Date: 2019-09-18 0:00:00