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. 29, 2022
Filed:
Jun. 25, 2021
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Wenjun Liao, Mountain View, CA (US);
Algird Michael Gudaitis, Fall City, WA (US);
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
The techniques disclosed herein provide apparatus, methods and systems that adaptively adjust the signal waveform (or waveshape) of the drive signal to a slow-scan mirror to compensate for non-linearities observed in the slow-scan feedback signal from a slow-scan mirror. Over large scan angles and high temperatures, the slow-scan mirror in a laser beam scanning device may exhibit a nonlinear response to the drive signal that results in poor image quality issues such as bright lines, bands in the display image, and image distortion. The presently disclosed technologies track the linearity performance of the overall system by detecting non-linearities in waveform of the slow-scan feedback signal real time, and consequently apply a pre-distortion to the drive waveform to compensate for these detected non-linearities. The parameters, logic and blocks of the control may be implemented in hardware, software or combinations thereof.