Optical disk drive and method for determining disk type
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United States of America Patent
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Apr 3, 2012
Grant Date -
Jun 24, 2010
app pub date -
Sep 25, 2009
filing date -
Dec 24, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of determining a disk type of an optical disk is provided to comprise steps of: using a first light path for forming an incident beam; moving an objective lens system corresponding to the first light path from a start position towards the optical disk; receiving a sensor output signal during the movement of the objective lens system, wherein the sensor output signal includes a central aperture signal; determining the disk type of the optical disk according to the central aperture signal.
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