US 12,279,064 B2
Image compensation circuit for gamma calibration
Wei-Jhe Ma, Taichung (TW); Feng-Ting Pai, Hsinchu (TW); Jun-Yu Yang, Hsinchu (TW); and Hsin-Yu Pan, Hsinchu County (TW)
Assigned to NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed by NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed on Feb. 23, 2023, as Appl. No. 18/113,059.
Claims priority of provisional application 63/321,077, filed on Mar. 17, 2022.
Prior Publication US 2023/0300284 A1, Sep. 21, 2023
Int. Cl. H04N 5/202 (2023.01); G06V 10/74 (2022.01); G09G 3/3208 (2016.01); H04N 9/69 (2023.01)
CPC H04N 5/202 (2013.01) [G06V 10/761 (2022.01); G09G 3/3208 (2013.01); H04N 9/69 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0673 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An image compensation circuit for controlling a luminance of a display panel, the image compensation circuit being configured to:
receive a plurality of image data;
perform gamma tuning to convert the plurality of image data into a plurality of original gamma codes according to a plurality of first compensation values corresponding to a first operation mode;
calculate a plurality of gamma difference values between the plurality of first compensation values and a plurality of second compensation values corresponding to a second operation mode; and
calculate a plurality of output gamma codes corresponding to the second operation mode according to the plurality of original gamma codes by using the plurality of gamma difference values.