US 11,727,847 B2
Electronic device and method for changing gamma according to refresh rate
Seoyoung Lee, Gyeonggi-do (KR); Minwoo Lee, Gyeonggi-do (KR); Donghyun Yeom, Gyeonggi-do (KR); Kwangtai Kim, Gyeonggi-do (KR); Minwoo Kim, Gyeonggi-do (KR); Seungryeol Kim, Gyeonggi-do (KR); and Juseok Lee, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Jul. 7, 2022, as Appl. No. 17/859,112.
Application 17/859,112 is a continuation of application No. PCT/KR2022/009056, filed on Jun. 24, 2022.
Claims priority of application No. 10-2021-0088018 (KR), filed on Jul. 5, 2021.
Prior Publication US 2023/0005408 A1, Jan. 5, 2023
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/046 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/144 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a display panel;
a display driver IC (DDI) configured to drive the display panel;
a processor configured to generate first image data to be displayed by the display panel; and
an image-processing module,
wherein the image-processing module is configured to:
determine a target gamma curve related to the first image data,
receive a request for switching a scan rate of the display panel from a first frequency to a second frequency,
determine a gamma offset for changing a first gamma curve corresponding to the first frequency to a second gamma curve corresponding to the second frequency and an offset margin additionally configured by the display panel in response to reception of the request,
determine a limit gamma curve generated by applying the gamma offset and the offset margin to the first gamma curve,
generate second image data by correcting the first image data, based on a difference value between the limit gamma curve and the target gamma curve to map the first image data to the target gamma curve, and
drive the display panel, based on the second image data and the limit gamma curve.