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Dynamic Compensator for Use in Servo Loop for Optical Pickup Head
Patent

Dynamic Compensator for Use in Servo Loop for Optical Pickup Head

Asustek Computer, Inc., 陳致真, Yu, Wen-Hai and Lee, Shih-Chieh
13/11/2000

Abstract

A servo loop, including a dynamic compensator, for use in an optical disk player is provided. The optical disk player reproduces data over the optical disk. The pickup head reads data on a data track of the optical disk and generates a feedback signal. The dynamic compensator inputs a feedback signal and outputs a compensation signal after a predetermined transfer function operation over the feedback signal in order to adjust the dynamic response of the servo loop. The servo loop includes a switch, which is responsive to a signal indicative of high spinning rate of the optical disk for selectively outputting the compensation signal. The servo loop includes a device coupled to the switch for selectively transmitting the compensation signal into the servo loop.

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