Patent ID: 11908369
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A contrast enhancement device included in a display device including a first display region and a second display region, the contrast enhancement device comprising:
a first region analysis circuit which generates a contrast enhancement coefficient for the first display region of the display device by analyzing input data for the first display region;
a second region analysis circuit which generates the contrast enhancement coefficient for the second display region of the display device by analyzing the input data for the second display region;
a first channel process circuit which performs a contrast enhancement process on the input data transferred through a first channel based on the contrast enhancement coefficient for the first and second display regions;
a second channel process circuit which performs the contrast enhancement process on the input data transferred through a second channel based on the contrast enhancement coefficient for the first and second display regions;
a third channel process circuit which performs the contrast enhancement process on the input data transferred through a third channel based on the contrast enhancement coefficient for the first and second display regions;
a fourth channel process circuit which performs the contrast enhancement process on the input data transferred through a fourth channel based on the contrast enhancement coefficient for the first and second display regions; and
a diagnosis circuit which outputs output image data generated by the first through fourth channel process circuits in a normal mode, and generates diagnosis result data for the first and second region analysis circuits and the first through fourth channel process circuits by comparing output test data generated by the first through fourth channel process circuits in a diagnosis mode.