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:
Dec. 10, 2019
Filed:
Apr. 18, 2019
Apple Inc., Cupertino, CA (US);
Tobias Jung, San Francisco, CA (US);
Marc Albrecht, San Francisco, CA (US);
Duane M. Petrovich, San Fancisco, CA (US);
Sean C. Chang, Mountain View, CA (US);
David S. Zalatimo, San Jose, CA (US);
Pierre-Yves Emelie, Mountain View, CA (US);
Manev Luthra, Cupertino, CA (US);
Chengrui Le, San Jose, CA (US);
Lingyu Hong, Princeton, NJ (US);
Wei H. Yao, Palo Alto, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.