Video processer, display device, method of video processing, and recording medium

Patent metadata

Field	Value
Publication number	US-2021027724-A1
Application number	US-201916968997-A
Country	US
Kind code	A1
Filing date	Feb 25, 2019
Priority date	Feb 26, 2018
Publication date	Jan 28, 2021
Grant date	—

Abstract

A video processor included in a display device that includes a backlight having a plurality of divided regions, the video processor including: a first video processing unit configured to perform video processing on a partial video region that is a partial region of an input video; and a second video processing unit configured to perform video processing on a region different from the partial video region, wherein the first video processing unit transmits control data for controlling the plurality of divided regions of the backlight to the backlight, and the plurality of divided regions of the backlight controlled by the control data, which is transmitted by the first video processing unit, and the plurality of divided regions of the backlight corresponding to the partial video region, which is processed by the first video processing unit, are different from each other.

First claim

1 . A video processor included in a display device that includes a backlight having a plurality of divided regions, the video processor comprising:
a first video processing unit configured to perform video processing on a partial video region that is a partial region of an input video; and a second video processing unit configured to perform video processing on a region different from the partial video region, wherein the first video processing unit transmits control data for controlling the plurality of divided regions of the backlight to the backlight, and the plurality of divided regions of the backlight controlled by the control data, which is transmitted by the first video processing unit, and the plurality of divided regions of the backlight corresponding to the partial video region, which is processed by the first video processing unit, are different from each other.

2 . The video processor according to claim 1 , wherein the first video processing unit transmits control data for controlling all the plurality of divided regions of the backlight to the backlight.

3 . The video processor according to claim 1 , wherein
for the partial video region, the first video processing unit generates the control data for controlling the plurality of divided regions of the backlight corresponding to the partial video region, for the region different from the partial video region, the second video processing unit generates the control data for controlling the plurality of divided regions of the backlight corresponding to the region different from the partial video region, and the first and second video processing units mutually transmit and receive the control data.

4 . The video processor according to claim 1 , wherein
the backlight comprises a brightness controlling circuit configured to control a brightness of each of the plurality of divided regions, and the first video processing unit transmits the control data to the brightness controlling circuit.

5 . The video processor according to claim 1 , wherein
the plurality of divided regions are at least sectioned into a first set and a second set, the backlight comprises
a first brightness controlling circuit configured to control a brightness of the plurality of divided regions included in the first set, and
a second brightness controlling circuit configured to control a brightness of the plurality of divided regions included in the second set, and
the first video processing unit transmits, to the first brightness controlling circuit, the control data corresponding to the plurality of divided regions that are targets for the first brightness controlling circuit, and the first video processing unit transmits, to the second brightness controlling circuit, the control data corresponding to the plurality of divided regions that are targets for the second brightness controlling circuit.

6 . A display device comprising:
a display panel configured to display an output video; a backlight comprising a plurality of divided regions; and the video processor according to claim 1 .

7 . The display device according to claim 6 , wherein the backlight comprises a plurality of light-emitting units configured to cast light upon the display panel.

8 . A method of video processing performed in a video processor included in a display device that includes a backlight having a plurality of divided regions,
the video processor including
a first video processing unit that performs video processing on a partial video region that is a partial region of an input video, and
a second video processing unit that performs video processing on a region different from the partial video region,
the method comprising the steps of: performing, in the first video processing unit, video processing on the partial video region and performing, in the second video processing unit, video processing on the region different from the partial video region; and transmitting control data for controlling the plurality of divided regions of the backlight to the backlight, the transmitting step being performed in the first video processing unit, wherein the plurality of divided regions of the backlight controlled by the control data, which is transmitted by the first video processing unit, and the plurality of divided regions of the backlight corresponding to the partial video region, which is processed by the first video processing unit, are different from each other.

9 . A non-transitory computer-readable recording medium storing a program for operating a computer as the video processor according to claim 1 , the program causing the computer to function as the first and second video processing units.

10 . (canceled)

Assignees

• Sharp Kk

Inventors

• Murai Takayuki
• Sakurai Ryoji
• Yoshiyama Kazuyoshi

Classifications

• G09G2360/08

  Power processing, i.e. workload management for processors involved in display operations, such as CPUs or GPUs · CPC title

• G09G2320/0686

  with two or more screen areas displaying information with different brightness or colours · CPC title

• G09G3/3426 Primary

  the different display panel areas being distributed in two dimensions, e.g. matrix · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G02F1/133

  Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements (arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36) · CPC title