US 11,837,185 B2
Synchronizing scanning display with video
Algird Michael Gudaitis, Fall City, WA (US); and Mark Alan Champion, Kenmore, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Oct. 16, 2022, as Appl. No. 18/046,934.
Application 18/046,934 is a continuation of application No. 16/280,620, filed on Feb. 20, 2019, granted, now 11,495,186.
Claims priority of provisional application 62/677,643, filed on May 29, 2018.
Prior Publication US 2023/0115590 A1, Apr. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/34 (2006.01); H04N 3/08 (2006.01); G09G 3/02 (2006.01); G02B 26/08 (2006.01); G02B 26/10 (2006.01)
CPC G09G 3/346 (2013.01) [G09G 3/02 (2013.01); H04N 3/08 (2013.01); G02B 26/0858 (2013.01); G02B 26/101 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device, comprising:
a light source;
a scanning mirror system comprising a mirror, the scanning mirror system configured to scan light from the light source in a first direction at a first, higher scan rate, and in a second direction at a second, lower scan rate; and
a drive circuit configured to control the scanning mirror system to display video image data by
providing a control signal to the scanning mirror system to control scanning in the second direction, and
for each video image data frame of at least a subset of video image data frames, combining the control signal with an adjustment signal prior to reaching a last active pixel of a current video image data frame to adjust the scanning in the second direction by shifting one or more of a position of the mirror or a trajectory of the mirror for a scan of a next video image data frame to start at a correct location, the adjustment signal comprising a low pass filtered signal with a cutoff frequency based on a lowest resonant frequency of the scanning mirror system in the second direction.