Seiko Epson Corporation

Stanislav Zaozerskii

Kumar Anandabairavasamy Anand

Sebdani Mahmood Mazrouei

Yasutoshi Akiba

A circuit device includes a luminance analysis circuit, a dimmer circuit, a first color correction circuit, and a second color correction circuit. The luminance analysis circuit performs luminance analysis and resolution reduction on image data of an input image to output luminance information having resolution lower than that of the input image. The dimmer circuit determines, according to the luminance information, light source luminance information indicating light-emission luminance at which each of light source elements emits light. The first color correction circuit performs color correction on first split image data corresponding to a first area of a display panel, based on the light source luminance information. The second color correction circuit performs color correction on second split image data corresponding to a second area of the display panel, based on the light source luminance information.

Color correction circuit device and display system

A circuit device includes a luminance analysis circuit and a dimmer circuit. The luminance analysis circuit performs luminance analysis on image data of an input image to output luminance information. The dimmer circuit determines light source luminance information indicating light-emission luminance of each of light source elements according to the luminance information. The dimmer circuit determines the light-emission luminance of the light source element from the luminance information of a pixel by using a weight corresponding to a distance between the pixel and the light source element. The dimmer circuit sets an attenuation degree of the weight with respect to the distance to a first attenuation degree when a global dimming parameter is a first value. The dimmer circuit sets the attenuation degree to a second attenuation degree higher than the first attenuation degree when the global dimming parameter is a second value smaller than the first value.

Circuit device and display system

A circuit device controls a display device including light source elements and a display panel. The circuit device includes a luminance analysis circuit and a dimmer circuit. The luminance analysis circuit performs luminance analysis on image data of an input image to output luminance information. The dimmer circuit performs local dimming processing for dimming each of the light source elements based on the luminance information and global dimming processing using a global dimming parameter based on a sensor output of an ambient light sensor, to determine light source luminance information indicating light-emission luminance of each of the light source elements. The dimmer circuit performs dimming processing in which a speed to change the light-emission luminance in the global dimming processing is slower than a speed to change the light-emission luminance in the local dimming processing.

Growing community of inventors

Richmond, Canada

Stanislav Zaozerskii