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. 12, 2016
Filed:
Oct. 14, 2013
Pixart Imaging Inc., Hsin-Chu, TW;
Siew Chin Lee, Hsin-Chu, TW;
PIXART IMAGING INC., Hsin-Chu, TW;
Abstract
An exemplary embodiment of the present disclosure provides a wake up method and an optical input device using the same. The method includes the following steps. A first image is captured and set as a reference frame when the optical input device enters a sleep mode. A second image is captured and set as a compare frame while the optical input device operates in the sleep mode. The second frame is further being compared with the reference frame to generate a histogram difference. Subsequently, whether a peak histogram value of the histogram difference is less than a predetermined threshold is determined. When the determined that the peak histogram value is less than the predetermine threshold, configures the optical input device to operate in an active mode.