US 12,451,090 B2
Display system control device and control method thereof
Ho Won Son, Yongin-si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Apr. 23, 2024, as Appl. No. 18/643,069.
Claims priority of application No. 10-2023-0108193 (KR), filed on Aug. 18, 2023.
Prior Publication US 2025/0061865 A1, Feb. 20, 2025
Int. Cl. G09G 3/36 (2006.01); G09G 3/20 (2006.01); G09G 3/34 (2006.01)
CPC G09G 3/36 (2013.01) [G09G 3/20 (2013.01); G09G 3/3607 (2013.01); G09G 3/3406 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0666 (2013.01); G09G 2320/0673 (2013.01); G09G 2320/068 (2013.01); G09G 2358/00 (2013.01); G09G 2380/10 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A display system control device having a color correction function, the device comprising:
a memory unit storing information including a display color coordinate value, a display luminance value, a reference color coordinate value, and a reference luminance value for each control mode of a plurality of control modes of a display system, wherein the display system includes switching cells; and
a control unit configured to control the display system based on a received control mode among the plurality of control modes and the information stored in the memory unit,
wherein upon control mode transition, the control unit is further configured to:
compensate for luminance changes caused by voltage differences due to panel transmittance differences between the switching cells and an LGP (Light Guide Plate) of the display system, and color coordinate changes caused by liquid crystal rotation of the switching cells and interference of the LGP, by correcting the display color coordinate value and the display luminance value respectively based on the reference color coordinate value corresponding to the received control mode and the reference luminance value corresponding to the received control mode,
wherein when the received control mode is changed to a changed control mode, the control unit is further configured to:
correct the display luminance value based on the reference luminance value corresponding to the changed control mode by controlling a light amount of a light source of the display system through duty ratio adjustment, wherein the light source of the display system is turned on according to an on duty timing of a dimming signal and repeatedly switched on and off at a frequency above a visible frequency, and
correct the display color coordinate value based on the reference color coordinate value corresponding to the changed control mode through gamma correction of the display system.