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US Patent 6965548 Method of unbalanced disc detection

Patent 6965548 was granted and assigned to AOpen on November, 2005 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent

Patent attributes

Current Assignee

AOpen

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

69655480

Patent Inventor Names

Yung-Chien Chen0

Date of Patent

November 15, 2005

Patent Application Number

101961500

Date Filed

July 15, 2002

Patent Primary Examiner

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Muhammad Edun

Patent abstract

A method of unbalanced disc detection in a slim type optical drive. In the method of the present invention, the slim type optical drive obtains a first tracking count per round of the disc at a first rotation speed to obtain a first runout. Then, the optical drive obtains a second tracking count per round of the disc at a second rotation speed to obtain a second runout. Finally, deviation of the disc is assessed according to the first runout and the second runout, so that the disc can be determined to be a gravitationally eccentric disc or not.