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:
Apr. 14, 2026
Filed:
Apr. 12, 2024
Apple Inc., Cupertino, CA (US);
Feng Guo, Cupertino, CA (US);
Yang Zhang, Saratoga, CA (US);
Young Il Kim, San Jose, CA (US);
Jingdong Chen, San Jose, CA (US);
Zhijun Qian, San Jose, CA (US);
Venkataraman V Iyer, San Diego, CA (US);
Lingyu Hong, San Jose, CA (US);
Chengrui Le, Beijing, CN;
Kevin W Sliech, San Francisco, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An electronic device is provided that includes display pixels configured to update at a fixed or variable refresh rate, a backlight unit for illuminating the display pixels, and associated backlight driver circuitry configured to drive the backlight unit and configured to operate in a first reset mode during which a dither counter in the backlight driver circuitry is reset when the display pixels are being refreshed at a fixed refresh rate and in a second non-reset mode during which the dither counter is not reset even when the display pixels are being refreshed at a variable refresh rate. The backlight driver circuitry can include a brightness controller configured to output a brightness code, a memory circuit configured to store a dither table coupled to a dither counter, an adder, a clipping circuit, and a backlight driver.