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:
May. 22, 2012
Filed:
Jan. 22, 2008
Meng Tsung Wu, Hsin-Chu, TW;
Meng Tsung Wu, Hsin-Chu, TW;
Pixart Imaging Inc., Hsin-Chu, TW;
Abstract
A quasi analog knob control method for controlling a function status of a display device by imitating the rotation of an analog knob includes providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor to point inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying image positions of the reference points on the digital image and obtaining a first parameter; rotating the image sensor for imitating the rotation of the analog knob and obtaining a second parameter; and calculating a rotation angle difference between the first and the second parameters to control the function status of the display device accordingly.