Method and apparatus to generate tracking error signal, optical storage drive and lead-in control method
A method and apparatus to stably generate a tracking error signal even for a compact disc (CD) with a pit depth of about lambda /4 or a narrow track pitch in an optical storage drive, an optical storage drive using the same, and a lead-in control method of the optical storage drive. The method inclu...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A method and apparatus to stably generate a tracking error signal even for a compact disc (CD) with a pit depth of about lambda /4 or a narrow track pitch in an optical storage drive, an optical storage drive using the same, and a lead-in control method of the optical storage drive. The method includes detecting reflected laser beams using a photo detector (32); and generating a first tracking error signal based on optical signals received by the photo detector (32), using a differential phase detection (DPD) method and outputting the first tracking error signal as the tracking error signal. |
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