US 12,444,333 B1
Utilizing noise threshold conditions for controlling scanning mirrors
Wenjun Liao, Sunnyvale, CA (US); Ruipeng Sun, Pleasanton, CA (US); and Chuan Pu, Foster City, CA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Apr. 10, 2024, as Appl. No. 18/631,826.
Int. Cl. G09G 3/02 (2006.01); G09G 3/00 (2006.01)
CPC G09G 3/02 (2013.01) [G09G 3/001 (2013.01)] 20 Claims
OG exemplary drawing
 
1. On a scanning display device comprising an illumination source, and a scanning mirror system including a sense circuit coupled to a scanning mirror, a method comprising:
operating the scanning mirror system using a drive signal to control a trajectory of the scanning mirror system while operating the illumination source to thereby project an image, the trajectory comprising changes to a scan angle of the scanning mirror system over time;
obtaining a control parameter based at least upon an output of the sense circuit;
comparing the control parameter to a noise threshold condition;
when the control parameter does not meet the noise threshold condition, continue operating the scanning mirror according to the drive signal; and
when the control parameter meets the noise threshold condition, adjusting the drive signal to form an adjusted drive signal to change the trajectory of the scanning mirror and operating the scanning mirror system using the adjusted drive signal.