US 12,340,737 B2
Global nonlinear scaler for multiple pixel gamma response compensation
Mario Miscuglio, Sunnyvale, CA (US); Kingsuk Brahma, Mountain View, CA (US); Jie Won Ryu, Santa Clara, CA (US); Shengkui Gao, Shoreline, WA (US); Yuchi Che, Santa Clara, CA (US); Graeme M Williams, San Diego, CA (US); Yi Qiao, San Jose, CA (US); Wei H Yao, Palo Alto, CA (US); and Jean-Pierre S Guillou, La Jolla, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Nov. 15, 2023, as Appl. No. 18/509,592.
Claims priority of provisional application 63/433,312, filed on Dec. 16, 2022.
Prior Publication US 2024/0203332 A1, Jun. 20, 2024
Int. Cl. G09G 3/3208 (2016.01); G09G 3/32 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0828 (2013.01); G09G 2320/0276 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an electronic display comprising a first display region associated with first gamma response characteristics and a second display region associated with second gamma response characteristics; and
processing circuitry configured to:
receive a gray level value corresponding to a first pixel of the second display region;
convert the gray level value to a first digital voltage value, the first digital voltage value configured to provide a first gamma conversion corresponding to the first gamma response characteristics;
apply an offset to the first digital voltage value to obtain a second digital voltage value corresponding to the second gamma response characteristics; and
output the second digital voltage value to a digital-to-analog converter (DAC) to obtain an analog voltage corresponding to the second display region.