G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 3/70 (2006.01) G11B 5/09 (2006.01) G11B 5/76 (2006.01) G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/005 (2006.01) G11B 7/007 (2006.01) G11B 7/013 (2006.01) G11B 20/10 (2006.01)
Patent
CA 2356858
A system and method are disclosed for reading a multilevel signal from an optical disk (200). The method includes reading a raw analog data signal from a disk (200) using an optical head (204) and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal by a signal processor (214). Correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
L'invention concerne un système et un procédé de lecture d'un signal multi-niveau sur un disque optique (200). Le procédé consiste à lire un signal de données analogique brut sur un disque (200) à l'aide d'une optique (204) et à ajuster l'amplitude du signal de données analogique brut. Un signal de synchronisation est récupéré à partir du signal de données analogique ajusté en amplitude par un processeur (214) de signal. Une correction est effectuée sur la modulation d'amplitude du signal de données analogique brut par traitement du signal de données analogique brut et du signal de synchronisation.
Fan John L.
Lee David C.
Ling Yi
Lo Yung-Chen
Martin Richard L.
Calimetrics Inc.
Smart & Biggar
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