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:
Jun. 23, 2026
Filed:
Jul. 19, 2023
Em Microelectronic-marin SA, Marin, CH;
Sylvain Grosjean, Les Fins, FR;
Evan Lojewski, Woodland Park, CO (US);
Brian Moore, Colorado Springs, CO (US);
Jérémy Schlachter, Villars-le-Grand, CH;
Lorenzo Pierobon, Neuchâtel, CH;
EM Microelectronic-Marin SA, Marin, CH;
Abstract
A method for applying illumination correction for an optical computer mouse, includes: flashing a light source of the mouse directed towards a surface; accumulating voltage on a pixel array of the mouse to obtain raw pixel values of an image frame in response to detecting light reflected from the surface; applying analog correction to the raw pixel values based on digital gain coefficients to obtain an array of corrected pixel values forming corrected image data; digitizing the corrected image data with an analog-to-digital converter to obtain digital pixel values forming digital image data; and updating the digital gain coefficients so that a gain coefficient corresponding to a digital pixel value is incremented if the digital pixel value is below or equal to a given pixel threshold value, and so that the gain coefficient is decremented if the digital pixel value is above the given pixel threshold value.