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:
Aug. 13, 2019
Filed:
Aug. 27, 2017
Pixart Imaging Inc., Hsin-Chu, TW;
Han-Ping Cheng, Hsin-Chu, TW;
Chao-Chien Huang, Hsin-Chu, TW;
PIXART IMAGING INC., Hsin-Chu, TW;
Abstract
A positioning method and a handheld device for performing the method are disclosed. In the method, a handheld device captures images corresponding to positions of a reference when the handheld device points toward the reference. A first image position, a first tilt angle indicative of a rotation angle of the handheld device, and a first pointing coordinate of the reference can obtained. A second pointing coordinate according to the first image position and a second tilt angle are obtained. Therefore, a first displacement vector between the first pointing coordinate and the second pointing coordinate can be computed. A third pointing coordinate can also be obtained. When a substantial movement of the positions of the reference revealed in the images captured by the handheld device is found, an output pointing coordinate is obtained. The output can be outputting a cursor parameter for controlling a cursor controlled by the handheld device.