US 12,334,027 B2
Backlight control for display devices
Hirobumi Furihata, Tokyo (JP); Takashi Nose, Kanagawa (JP); and Kazutoshi Aogaki, Kanagawa (JP)
Assigned to Synaptics Incorporated, San Jose, CA (US)
Filed by Synaptics Incorporated, San Jose, CA (US)
Filed on Mar. 26, 2024, as Appl. No. 18/617,140.
Application 18/617,140 is a continuation in part of application No. 18/473,675, filed on Sep. 25, 2023, granted, now 12,100,361.
Prior Publication US 2025/0104658 A1, Mar. 27, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/3426 (2013.01) [G09G 2320/0247 (2013.01); G09G 2320/0686 (2013.01); G09G 2360/144 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a backlight device comprising a plurality of light sources configured to illuminate a display panel; and
a backlight control circuit configured to:
apply a filter to a target part of an input image to generate a filtered image part, wherein the target part of the input image is displayed in a corresponding region of the display panel illuminated by a target light source of the plurality of light sources; and
control a luminance level of the target light source based on a maximum pixel luminance level of the filtered image part and a local average picture level (APL) of the filtered image part.