Verfahren und System zur Dynamischen Beleuchtungskorrektur aus Bit-Reduzierten Daten für Computermausanwendungen

Details

Veröffentlichungs-Nr.

EP4318188

Aktenzeichen

EP22189076

Anmeldetag

5. August 2022

Veröffentlichung

22. Oktober 2025

Erteilung

22. Oktober 2025

Rechtsraum

EP

IPC

G06F3/0354G06F3/03G06F3/038

Abstract

A method is provided for applying an illumination correction for an optical computer mouse. The method comprises the steps of: flashing (101) a light source of the mouse directed towards a surface; accumulating (103) 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 (105) 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 (109) the corrected image data with an analog-to-digital converter to obtain digital pixel values forming digital image data; and updating (111) the digital gain coefficients so that a respective gain coefficient corresponding to a respective digital pixel value is incremented if the respective digital pixel value is below or equal to a given pixel threshold value, and so that the respective gain coefficient corresponding to the respective digital pixel value is decremented if the respective digital pixel value is above the given pixel threshold value.

Anmelder

Firma

EM Microelectronic-Marin SA

Land

🇨🇭 Schweiz

Fachgebiete