RF ripple signal compensator used with defect detection and...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

Reexamination Certificate

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Details

C369S059210

Reexamination Certificate

active

07154830

ABSTRACT:
A dynamic compensation device for radio frequency ripple signals of an optical storage system is disclosed. The device is composed of a radio frequency ripple signal process circuit, a radio frequency signal process circuit, a radio frequency signal peak detector, a first analog to digital converter, a second analog to digital converter, a defect detector, and a fingerprint detector. The drop-out of the central level of the radio frequency ripple signal is eliminated, and the track cross waveform is prevented from being damaged.

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patent: 2002/0093904 (2002-07-01), Armitage et al.
patent: 2002/0141314 (2002-10-01), Yang
patent: 2002/0181374 (2002-12-01), Lai

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