US Patent 7920448 Runout detection method
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Patent abstract
A method for determining runout disc is disclosed. The method comprises: focusing on a focal point on a disc; driving the disc to spin the disc; generating a crossover signal according to a track of the disc crossing the focal point; and determining that the disc is a runout disc when the frequency of the crossover signal exceeds a pre-determine value.
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Patent Inventor Names
Po-Chao Huang0
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US Patent 07920448 Runout detection method US Patent 7920448 Runout detection method
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Patent Number
079204480
Patent Number
79204480
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Patent Jurisdiction
Patent Number
079204480
Date of Patent
April 5, 2011
0Patent Application Number
120689420
Date Filed
February 13, 2008
0Official Website
Patent Primary Examiner
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US Patent 07920448 Runout detection method
Infobox
Is a
Patent jurisdiction
Patent number
07920448
Date of patent
April 5, 2011
Patent application number
12068942
Date Filed
February 13, 2008
Patent primary examiner
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