US 12,293,697 B2
Method of compressing stress data, encoder, display driver and display device
Hyeonmin Kim, Yongin-si (KR); Yunki Baek, Yongin-si (KR); Jong-Woong Park, Yongin-si (KR); Hye-Sang Park, Yongin-si (KR); Sooyeon Lee, Yongin-si (KR); and Wonbok Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on May 1, 2024, as Appl. No. 18/651,869.
Claims priority of application No. 10-2023-0130417 (KR), filed on Sep. 27, 2023.
Prior Publication US 2025/0104601 A1, Mar. 27, 2025
Int. Cl. G09G 3/20 (2006.01); G09G 3/3208 (2016.01)
CPC G09G 3/2096 (2013.01) [G09G 3/3208 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/045 (2013.01); G09G 2350/00 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method of compressing stress data in a display device, the method comprising:
dividing the stress data into block stress data for a pixel block;
generating a plurality of compressed codes by encoding the block stress data in a plurality of encoding modes;
determining whether the plurality of encoding modes are available encoding modes for the block stress data based on code lengths of the plurality of compressed codes and a number of available bits for the pixel block;
selecting a final encoding mode among the available encoding modes based on quantization values of the available encoding modes; and
generating a compressed bitstream for the pixel block based on a compressed code corresponding to the final encoding mode among the plurality of compressed codes.