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:
Nov. 02, 2021
Filed:
May. 03, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Chuan Pu, Foster City, CA (US);
Wenjun Liao, Sunnyvale, CA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Techniques are described herein that are capable of adjusting a notch frequency of an adaptive notch filter ('filter') to track a resonant frequency of a slow scan MEMS mirror ('mirror'). For instance, an adaptive feedback may be configured to determine one or more resonant frequencies of the mirror based at least in part on a frequency response of an output signal that is proportional to movement of the mirror. The adaptive feedback may be further configured to adjust at least one notch frequency of the filter to track at least one respective resonant frequency of the mirror. The filter may be configured to modify a magnitude of a frequency response of a combination of the filter and the mirror to be substantially constant by suppressing the at least one notch frequency in a frequency response of the mirror.