| 摘要 |
The present invention discloses an apparatus and method for generating a tracking error signal in an optical disc drive. The apparatus contains an optical detection module, an ADC module, a phase detection module, and a filter module. The optical detection module generates a first analog signal and a second analog signal. The ADC module samples the first and second signals in a first sampling time to generate a first digital value and a second digital value, and samples the first and second signals in a second sampling time to generate a third digital value and a fourth digital value. The phase detection module generates a digital phase difference value according to the first, the second, the third, and the fourth digital values. The filter module generates the tracking error signal according to the digital phase difference value.
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