The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2013
Filed:
Sep. 07, 2011
Yu-sheng Wang, Taoyuan County, TW;
Jen-chen Wu, Taoyuan County, TW;
Yu-Sheng Wang, Taoyuan County, TW;
Jen-Chen Wu, Taoyuan County, TW;
Quanta Storage Inc., Guishan Shiang, Taoyuan County, TW;
Abstract
A method is disclosed to detect the voltage of a limit switch in an optical disc drive. The method includes following steps: loading an optical disc when the voltage of the limit switch is at a high level, completing the disc loading process when the voltage is changed to a low level, sampling the voltage of the limit switch predetermined times when the voltage is changed to the high level again, detecting the sampling voltages, completing the disc ejecting process when the sampling voltages are all at the high level, and determining a voltage bouncing to maintain the disc loaded status to avoid disc ejection misjudgment of the optical disc drive when the sampling voltages are not all at the high level.