# US 2021/0241703 A1 · Control device, display device, and control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241703 A1 - Document ID: US20210241703A1 - Status: Published application - Kind: A1 - Application number: 16/972,561 - Filed: 2019-05-30 - Published: 2021-08-05 - Earliest claimed: 2018-06-15 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: MAKOTO SHIOMI; NAOKO GOTO; NAOTO INOUE; AYA OKAMOTO; OSAMU TERANUMA; MASAO KURINO; YUKI KATSUMURA - Web page: https://patentgrep.com/patent/US20210241703A1 ## CPC - G09G 3/342: {using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines} - G02F 1/133: 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) - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - G09G 5/10: Intensity circuits - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2330/021: Power management, e.g. power saving - G09G 2354/00: Aspects of interface with display user - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract To provide a control device capable of reducing power consumption of a display device. A display controller is a control device of a display device including a display including a plurality of light sources to be independently controlled. The display controller performs display processing that involves monitoring an update of an image to be displayed on a screen of the display, and causing a light source corresponding to a display region of the updated image to glow more brightly than another light source, the light source and the other light source being included in the light sources. ## Claims ### Claim at position 1 1-11. (canceled) ### Claim 12 A control device of a display device including a display including a plurality of light sources to be independently controlled, the control device performing display processing that involves monitoring an update of an image to be displayed on a screen of the display, and causing a light source corresponding to a display region of the updated image to glow more brightly than another light source, the light source and the other light source being included in the light sources. ### Claim 13 (depends on 12) The control device according to claim 12, wherein if detecting the update of the image when all the screen is set to a dark region, the control device performs the display processing by causing the light source corresponding to the display region of the updated image to glow more brightly than the other light source. ### Claim 14 (depends on 12) The control device according to claim 12, wherein the control device obtains information on the update of the image from a base system of the display device or an application installed in the display device, and performs the display processing in accordance with the obtained information on the update. ### Claim 15 (depends on 12) The control device according to claim 12, wherein if the image displayed on the screen changes in position or size depending on an input operation by a user of the display device, the control device causes a light source corresponding to the changed image to glow more brightly than another light source, the light source and the other light source being included in the light sources. ### Claim 16 (depends on 12) The control device according to claim 12, wherein the control device causes a light source to glow more brightly than another light source, the light source corresponding to a part, of content displayed on the screen, to be newly displayed through an operation by a user of the display device, the other light source corresponding to a part, of the content, already displayed, and the light source and the other light source being included in the light sources. ### Claim 17 (depends on 12) The control device according to claim 12, wherein the control device decreases brightness of a light source corresponding to a dark region that is a display region having brightness lower than or equal to a predetermined value, by decreasing brightness of a part, of an input image, to be displayed in the dark region, the light source being included in the light sources. ### Claim 18 (depends on 12) The control device according to claim 12, wherein the control device decreases an upper limit of brightness of a light source corresponding to a display region having brightness lower than or equal to a predetermined value, the light source being included in the light sources. ### Claim 19 (depends on 12) A display device comprising the control device according to claim 12. ### Claim 20 A control device of a display device including a display including a plurality of light sources to be independently controlled, the control device causing a light source to glow more brightly than another light source, the light source corresponding to a display region, of the display, displaying (i) information input through an operation by a user of the display device or (ii) information related to the information input by the user, and the light source and the other light source being included in the light sources. ### Claim 21 (depends on 20) The control device according to claim 20, wherein the control device decreases brightness of a light source corresponding to a dark region that is a display region having brightness lower than or equal to a predetermined value, by decreasing brightness of a part, of an input image, to be displayed in the dark region, the light source being included in the light sources. ### Claim 22 (depends on 20) The control device according to claim 20, wherein the control device decreases an upper limit of brightness of a light source corresponding to a display region having brightness lower than or equal to a predetermined value, the light source being included in the light sources. ### Claim 23 (depends on 20) A display device comprising the control device according to claim 20. ### Claim 24 A control method for controlling a display device including a display including a plurality of light sources to be independently controlled, the control method comprising display processing that involves monitoring an update of an image to be displayed on a screen of the display, and causing a light source corresponding to a display region of the updated image to glow more brightly than another light source, the light source and the other light source being included in the light sources.