Method and apparatus for determining type of digital versatile disc
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United States of America Patent
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Dec 1, 2009
Grant Date -
Dec 1, 2005
app pub date -
May 25, 2005
filing date -
May 25, 2004
priority date (Note) -
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Abstract
A method and an apparatus for determining types of digital versatile discs (DVDs) are provided. The method includes setting related parameters, acquiring a wobble signal from a DVD, setting a frequency dividing factor, and dividing the frequency of the wobble signal by the frequency dividing factor. Then, the time required for the digital versatile disc to spin one round, which is driven by a spindle motor of a disc player, is set as a unit time to calculate the frequency of the frequency-divided wobble signal. Finally, the type of the digital versatile disc is determined according to the frequency of the wobble signal.
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