Optical disc drive with a system behavior detection module
AssigneeMediatek Inc.
InventorsChih-Chin Hsu, Hsiang-Ji Hsieh
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Abstract
An optical disc drive includes a servo system and a system behavior detection module. The system behavior detection module includes a controller and a signal feeding unit coupled to the controller and the servo system. The controller is operable in a detection mode and in a normal operation mode. In the detection mode, the controller enables the signal feeding unit so as to introduce an exciting signal into the servo system. In the normal operation mode, the controller disables the signal feeding unit so as to inhibit introduction of the exciting signal into the servo system.
Claims23
An optical disc drive comprising:
- a servo system including
- an optical pickup unit for generating a detected signal,
- an amplifier coupled to said optical pickup unit for generating an error signal associated with the detected signal,
- a compensator for processing the error signal to result in a control signal, and
- a driver unit coupled to said optical pickup unit and responsive to the control signal for position correction of said optical pickup unit;
- and
- a system behavior detection module including a controller and a signal feeding unit coupled to said controller and said servo system,
- said controller being operable in a detection mode, wherein said controller enables said signal feeding unit so as to introduce an exciting signal into said servo system,
- said controller being further operable in a normal operation mode, wherein said controller disables said signal feeding unit so as to inhibit introduction of the exciting signal into said servo system.
A system behavior detection module for an optical disc drive having a servo system that includes
- an optical pickup unit for generating a detected signal,
- an amplifier coupled to the optical pickup unit for generating an error signal associated with the detected signal,
- a compensator for processing the error signal to result in a control signal, and
- a driver unit coupled to the optical pickup unit and responsive to the control signal for position correction of the optical pickup unit,
- said system behavior detection module comprising a controller and a signal feeding unit coupled to said controller and adapted to be coupled to the servo system,
- said controller being operable in a detection mode, wherein said controller enables said signal feeding unit so as to introduce an exciting signal into the servo system,
- said controller being further operable in a normal operation mode, wherein said controller disables said signal feeding unit so as to inhibit introduction of the exciting signal into the servo system.
Dependencies are inferred from the claim text.