# US 11,122,235 B2 · Display device and control method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,235 B2 - Document ID: US11122235B2 - Status: Granted - Kind: B2 - Application number: 15/541,222 - Filed: 2015-12-03 - Published: 2017-12-07 - Granted: 2021-09-14 - Earliest claimed: 2014-12-30 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Won-hee Choe; Min-woo Lee - Web page: https://patentgrep.com/patent/US11122235B2 ## CPC - H04N 5/58: in dependence upon ambient light - G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)} - H04N 5/14: Picture signal circuitry for video frequency region (cameras or camera modules comprising electronic image sensors, or control thereof H04N23/00) - G09G 2320/0626: for control of overall brightness - G09G 2330/022: in absence of operation, e.g. no data being entered during a predetermined time - G09G 2360/144: the light being ambient light - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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) ## Abstract A display device is provided. The display device includes a display configured to display at least one of an image and a text; a sensing unit configured to sense ambient illuminance; and a processor configured to gradually increase an output luminance value of the display, if a specific condition is satisfied based on the ambient illuminance sensed by the sensing unit and display attributes. ## Claims ### Claim 1 A display device comprising: a display; a sensor; and a processor configured to: control the display to display a content, obtain a display attribute of the content based on an arrangement of objects configuring the content by only using an object having a maximum luminance value among the objects and an object having a next highest luminance value among the objects, based on ambient illuminance sensed by the sensor and the display attribute, gradually increase an output luminance value of the display, wherein the processor is further configured to gradually increase the output luminance value of the display from a starting luminance value to a targeting luminance value during a luminance variation time, and wherein the processor is further configured to variably determine the starting luminance value based on a luminance difference between one object of objects in a frame included in the content and an adjacent object of the one object in the frame. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the processor gradually increases the output luminance value of the display based on the output luminance value of the display being higher than the ambient illuminance or the display being changed from an inactive state to an active state. ### Claim 3 (depends on 1) The display device as claimed in claim 1, wherein the display attribute further includes a driving brightness of the display and color information of the content. ### Claim 4 (depends on 1) The display device as claimed in claim 1, wherein the processor adjusts the output luminance value of the display in a gradually increased form over time based on at least one of a predetermined mathematical time function, a brightness value stored in a lookup table (LUT) or registry, intensity of synthesizing the content and an image which is darker than the content, and a memory value recorded previously in a device driver IC. ### Claim 5 (depends on 1) The display device as claimed in claim 1, wherein the output luminance value of the display includes at least one of a maximum brightness value of content and an average brightness value of the content. ### Claim 6 (depends on 1) The display device as claimed in claim 1, wherein the processor identifies the starting luminance value based on the sensed ambient illuminance and the display attribute. ### Claim 7 (depends on 1) The display device as claimed in claim 1, wherein the processor provides a user interface (UI) screen for adjusting the output luminance value of the display according to a predetermined event onto one region of the display. ### Claim 8 A control method of a display device, the control method comprising: displaying a content, sensing ambient illuminance; obtaining a display attribute of the content based on an arrangement state of objects configuring the content by only using an object having a maximum luminance value among the objects and an object having a next highest luminance value among the objects; and based on the sensed ambient illuminance and the display attribute, adjusting an output luminance value of the display in a gradually increased form, wherein the adjusting comprises gradually increasing the output luminance value of the display from a starting luminance value to a targeting luminance value during a luminance variation time, and wherein the starting luminance value is variably determined based on a luminance difference between one object of objects in a frame included in the content and an adjacent object of the one object in the frame. ### Claim 9 (depends on 8) The control method as claimed in claim 8, wherein the increasing the output luminance value of the display is performed based on the output luminance value of the display being higher than the ambient illuminance or the display being changed from an inactive state to an active state. ### Claim 10 (depends on 8) The control method as claimed in claim 8, wherein the display attribute further includes a driving brightness of the display and color information of the content.