US 12,469,466 B2
Circuit apparatus and display system
Sebdani Mahmood Mazrouei, Markham (CA); Kwok lap Jimmy Lai, Vancouver (CA); and Kumar Anandabairavasamy Anand, Richmond (CA)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 27, 2024, as Appl. No. 18/618,071.
Claims priority of application No. 2023-051046 (JP), filed on Mar. 28, 2023.
Prior Publication US 2024/0331647 A1, Oct. 3, 2024
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/3426 (2013.01) [G09G 2320/02 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0626 (2013.01); G09G 2340/04 (2013.01); G09G 2360/16 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A circuit apparatus that controls a display apparatus including a plurality of light source elements and a display panel, the circuit apparatus comprising:
a resolution reduction circuit configured to generate, from input image data, low-resolution image data having a lower resolution than the input image data;
a light source luminance determination circuit configured to receive the low-resolution image data and determine, by light adjustment processing based on the low-resolution image data, light source luminance information indicating luminance of light emitted by each light source element of the plurality of light source elements; and
a storage unit configured to store attenuation factor distribution information indicating an attenuation factor distribution of light with respect to a distance between each light source element and a pixel, wherein
the light source luminance determination circuit determines the light source luminance information by the light adjustment processing based on the low-resolution image data and the attenuation factor distribution information,
the storage unit is further configured to store a plurality of pieces of the attenuation factor distribution information,
in a first mode, the light source luminance determination circuit determines the light source luminance information based on the low-resolution image data and first attenuation factor distribution information among the plurality of pieces of the attenuation factor distribution information, and
in a second mode, the light source luminance determination circuit determines the light source luminance information based on the low-resolution image data and second attenuation factor distribution information in which the attenuation factor distribution is different from that in the first attenuation factor distribution information among the plurality of pieces of the attenuation factor distribution information.