Mediatek Corporation

Yuh Chen

Chih-Ching Chen

Kuo-Jung Lan

Chun-Yu Lin

Ming-Jiou Yu

Shu-Hung Chou

Chia-Wei Liao

The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the optical disc drive when the optical disk drive encounters an operating state transition. In a first mode, at least one AGC loop of the apparatus compensates the gains of the servo signals with a selectable bandwidth during a specific period after the operating state transition to accelerate the convergence of the servo signals. In a second mode, at least one AGC loop of the apparatus reloads the previously saved convergence values or pre-determined values as the initial values according to the current operating state immediately after the operating state transition to accelerate the convergence of the servo signals.

Growing community of inventors

Chu-Pei, Taiwan

Yuh Chen