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. 04, 2015
Filed:
Mar. 23, 2012
Ke-cai Zeng, Fremont, CA (US);
Yansun Xu, Mountain View, CA (US);
John Frame, Arcadia, CA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
Embodiments of optical navigation modules (ONM) and methods of operating the same to block auto-movement due to ambient light are described. Generally, the method includes: (i) collecting a plurality of PD signal samples from a photodiode (PD) in an optical navigation module (ONM); (ii) determining a peak-to-peak variation (ΔPD) in the plurality of PD signal samples; (iii) comparing the peak-to-peak variation (ΔPD) to a specified threshold peak-to-peak variation (ΔPD); and (iv) if ΔPD is less than ΔPD, suppressing reporting of motion data derived from signals from a photodetector array (PDA) in the ONM to block auto-movement in an output from the ONM. Other embodiments are also described.