# US 2014/0198137 A1 · Method and apparatus for adjusting the brightness of a display and a display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0198137 A1 - Document ID: US20140198137A1 - Status: Published application - Kind: A1 - Application number: 14/151,395 - Filed: 2014-01-09 - Published: 2014-07-17 - Earliest claimed: 2013-01-15 - Assignees: Opera Software Asa - Applicants: Opera Software Asa - Inventors: Jiabin FENG; Le CHANG; Wei CHEN; Xin GUO - Web page: https://patentgrep.com/patent/US20140198137A1 ## CPC - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 2320/0626: for control of overall brightness - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - 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 The present application relates to a method and apparatus for adjusting the brightness of a display, and a display system. The method for adjusting the brightness of a display comprises: acquiring a brightness adjusting signal, wherein the brightness adjusting signal includes a position value indicative of a desired brightness of the display; comparing the position value with a first threshold, wherein an adjusting scale is defined according to a variable range of transparency of an object displayed on the display if the position value is smaller than the first threshold; generating a brightness value of the object according to the position of the position value in the adjusting scale; and applying the brightness value to the object displayed on the display. The method can adjust the transparency of the displayed object through the graphical system in an electronic device, thereby further lowering the brightness of the display. ## Claims ### Claim 1 A method for adjusting the brightness of a display, comprising: acquiring a brightness adjusting signal, wherein the brightness adjusting signal includes a position value indicative of a desired brightness of the display; comparing the position value with a first threshold, wherein an adjusting scale is defined according to a variable range of transparency of an object displayed on the display if the position value is smaller than the first threshold; generating a brightness value of the object according to the position of the position value in the adjusting scale; and applying the brightness value to the object displayed on the display. ### Claim 2 (depends on 1) The method of claim 1, wherein the comparing step further comprises: the adjusting scale is defined according to a variable range of backlight luminous intensity of the display if the position value is equal to or greater than the first threshold. ### Claim 3 (depends on 2) The method of claim 2, wherein the brightness value changes linearly with the position value if the position value is equal to or greater than the first threshold. ### Claim 4 (depends on 1) The method of claim 1, wherein the brightness value changes nonlinearly with the position value if the position value is smaller than the first threshold. ### Claim 5 (depends on 4) The method of claim 4, wherein the brightness value changes in a logarithmic function of the position value if the position value is smaller than a second threshold, wherein the second threshold is smaller than the first threshold. ### Claim 6 (depends on 1) The method of claim 1, wherein the brightness adjusting signal is generated in response to a sliding action on the display by a user. ### Claim 7 (depends on 1) The method of claim 1, wherein the first threshold corresponds to a minimum brightness that a platform application programming interface coupled to the display can configure. ### Claim 8 (depends on 1) The method of claim 1, wherein the object is a user interface. ### Claim 9 An apparatus for adjusting the brightness of a display, comprising: an acquiring module, configured to acquire a brightness adjusting signal, wherein the brightness adjusting signal includes a position value indicative of a desired brightness of the display; a comparing module, configured to compare the position value with a first threshold, wherein an adjusting scale is defined according to a variable range of transparency of an object displayed on the display if the position value is smaller than the first threshold; a generating module, configured to generate a brightness value of the object according to the position of the position value in the adjusting scale; and an applying module, configured to apply the brightness value to the object displayed on the display. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the comparing module is further configured to define the adjusting scale according to a variable range of backlight luminous intensity of the display if the position value is equal to or greater than the first threshold. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the brightness value changes linearly with the position value if the position value is equal to or greater than the first threshold. ### Claim 12 (depends on 9) The apparatus of claim 9, wherein the brightness value changes nonlinearly with the position value if the position value is smaller than the first threshold. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the brightness value changes in a logarithmic function of the position value if the position value is smaller than a second threshold, wherein the second threshold is smaller than the first threshold. ### Claim 14 (depends on 9) The apparatus of claim 9, further comprising: a touch sensing input module, configured to generate the brightness adjusting signal in response to a sliding action on the display by a user. ### Claim 15 (depends on 9) The apparatus of claim 9, further comprising an application programming interface in a platform coupled to the display, wherein the apparatus is configured to set the backlight luminous intensity of the display via the application programming interface. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the first threshold corresponds to a minimum brightness that the platform application programming interface coupled to the display can configure. ### Claim 17 (depends on 9) The apparatus of claim 9, wherein the object is a user interface. ### Claim 18 (depends on 9) A display system, comprising a display, an input module, and the apparatus for adjusting the brightness of the display claim 9, wherein: the input module is configured to generate the brightness adjusting signal in response to an input of a user; and the display is configured to display the object in response to the application of the brightness value.