US 12,073,780 B2
Signal processing device, signal processing method, and display device
Masao Zen, Tokyo (JP); Kazuhiro Nukiyama, Tokyo (JP); and Syunsuke Kikuchi, Tokyo (JP)
Assigned to SATURN LICENSING LLC, New York, NY (US)
Appl. No. 17/757,768
Filed by SATURN LICENSING LLC, New York, NY (US)
PCT Filed Dec. 14, 2020, PCT No. PCT/JP2020/046460
§ 371(c)(1), (2) Date Jun. 20, 2022,
PCT Pub. No. WO2021/131830, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-238105 (JP), filed on Dec. 27, 2019.
Prior Publication US 2023/0018404 A1, Jan. 19, 2023
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2320/0261 (2013.01); G09G 2360/147 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A signal processing device, comprising:
signal processing circuitry configured to analyze spatial resolution of a plurality of frames of a video signal of content and detect an index that correlates with hold blur, wherein
the detected index represents an edge part included in the video signal, and
the detected index is based on the analysis of the spatial resolution of the plurality of frames included in the video signal;
calculate, based on the detected index, a light emission duty value of a self-luminous display panel that includes a plurality of pixels that each includes a group of subpixels, wherein
the calculated light emission duty value for a black insertion drive is lower than the calculated light emission duty value for a normal drive, and
in the black insertion drive, display time of a video is shortened by a black display period during a display period of the video and peak luminance of the brightest subpixel within one of the plurality of pixels exceeds combined peak luminance of the remaining subpixels within the one of the plurality of pixels at a lower portion of an average pixel level of the video signal when the calculated light emission duty value is less than 100%; and
calculate, based on the calculated light emission duty value, a gain for luminance compensation, wherein the calculated gain for the black insertion drive is greater than the calculated gain for the normal drive.