# US 10,504,486 B2 · Display apparatus and control method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,486 B2 - Document ID: US10504486B2 - Status: Granted - Kind: B2 - Application number: 15/499,661 - Filed: 2017-04-27 - Published: 2017-11-09 - Granted: 2019-12-10 - Earliest claimed: 2016-05-09 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Ikuo Takanashi - Web page: https://patentgrep.com/patent/US10504486B2 ## CPC - G09G 5/10: Intensity circuits - G06F 3/04847: Interaction techniques to control parameter settings, e.g. interaction with sliders or dials - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)} - G09G 5/006: {Details of the interface to the display terminal (specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04)} - G09G 3/36: using liquid crystals - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0271: Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping - G09G 2320/0606: Manual adjustment - G09G 2320/0626: for control of overall brightness - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2320/08: Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal - G09G 2340/12: Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels - G09G 2354/00: Aspects of interface with display user - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - 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) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A display apparatus includes a display unit that displays an image based on an input image and a display control unit that controls the display unit based on the input image. The display control unit controls the display unit in such a manner as to display a value indicative of specific luminance as display luminance in which pixels with predetermined pixel values of the input image are displayed on the display unit. ## Claims ### Claim 1 A display apparatus, comprising: a display device; and at least one processor to perform operations as: a generating unit configured to generate a second image by converting a dynamic range of a first image into a display range as a dynamic range to be displayed on the display device; a setting unit configured to set the display range and a maximum luminance value of the display device, based on a user operation; an acquisition unit configured to acquire a value indicative of a specific luminance, based on the display range and the maximum luminance value, the specific luminance being luminance in which at least one pixel corresponding to a target brightness level of the first image is displayed on the display device; and a control unit configured to control the display device to display a graphical user interface (GUI) image for setting, by a user, the display range and the maximum luminance value of the display device, and to display a value indicative of the target brightness level and the value indicative of the specific luminance. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein the generating unit is configured to generate the second image by converting pixel values of pixels of the first image corresponding to brightness not included in the display range into an upper limit pixel value of the second image. ### Claim 3 (depends on 1) The display apparatus according to claim 1, wherein the target brightness level is at least one of a reflectance ratio of 18% and a reflectance ratio of 100%. ### Claim 4 (depends on 1) The display apparatus according to claim 1, wherein the acquisition unit executes a process of acquiring the specific luminance when at least one of the display range, the maximum luminance value, and the target brightness level is changed. ### Claim 5 (depends on 1) The display apparatus according to claim 1, wherein the control unit controls the display device to display the value indicative of the specific luminance in an absolute luminance value. ### Claim 6 (depends on 1) The display apparatus according to claim 1, wherein the control unit is configured to control the display device to display the value indicative of the target brightness level and the value indicative of the specific luminance in text format. ### Claim 7 (depends on 1) The display apparatus according to claim 1, wherein the GUI image includes a first gauge configured to be operated by the user to designate the display range and a second gauge configured to be operated by the user to designate the maximum luminance value. ### Claim 8 A control method of a display device, the method comprising: generating a second image by converting a dynamic range of a first image into a display range as a dynamic range to be displayed on the display device; setting the display range and a maximum luminance value of the display device, based on a user operation; acquiring a value indicative of a specific luminance, based on the display range and the maximum luminance value, the specific luminance being luminance in which at least one pixel corresponding to a target brightness level of the first image is displayed on the display device; and controlling the display device to display a graphical user interface (GUI) image for setting, by a user, the display range and the maximum luminance value of the display device, and to display a value indicative of the target brightness level and the value indicative of the specific luminance. ### Claim 9 (depends on 8) The control method according to claim 8, wherein in the generating, the second image is generated by converting pixel values of pixels of the first image corresponding to brightness not included in the display range into an upper limit pixel value of the second image. ### Claim 10 (depends on 8) The control method according to claim 8, wherein the target brightness level is at least one of a reflectance ratio of 18% and a reflectance ratio of 100%. ### Claim 11 (depends on 8) The control method according to claim 8, wherein the acquiring is intended to acquire the specific luminance when at least one of the display range, the maximum luminance value, and the target brightness level is changed. ### Claim 12 (depends on 8) The control method according to claim 8, wherein the controlling controls the display device to display the value indicative of the specific luminance in an absolute luminance value. ### Claim 13 (depends on 8) The control method according to claim 8, wherein the GUI image includes a first gauge configured to be operated by the user to designate the display range and a second gauge configured to be operated by the user to designate the maximum luminance value. ### Claim 14 A non-transitory recording medium storing a program of instructions for causing a computer to perform a method comprising: generating a second image by converting a dynamic range of a first image into a display range as a dynamic range to be displayed on a display device; setting the display range and a maximum luminance value of the display device, based on a user operation; acquiring a value indicative of a specific luminance, based on the display range and the maximum luminance value, the specific luminance being luminance in which at least one pixel corresponding to a target brightness level of the first image is displayed on the display device; and controlling the display device to display a graphical user interface (GUI) image for setting, by a user, the display range and the maximum luminance value of the display device, and to display a value indicative of the target brightness level and the value indicative of the specific luminance. ### Claim 15 A display apparatus comprising: a display device; and at least one processor to perform operations as: a first controlling unit configured to control the display device to display a graphical user interface (GUI) image for setting, by a user, a display range of the display device and a maximum luminance value of the display device; an acquiring unit configured to acquire a specific luminance, based on (1) a reference brightness level, (2) the display range of the display device and (3) the maximum luminance value of the display device, the specific luminance being luminance with which at least one pixel corresponding to the reference brightness level is displayed on the display device; and a second controlling unit configured to control the display device to display the reference brightness level and the specific luminance, in text format. ### Claim 16 (depends on 15) The display apparatus according to claim 15, wherein the at least one processor further performs operations as: a generating unit configured to generate a second image from a first image by converting a dynamic range of a first image into the display range; and a third controlling unit configured to control the display device to display the second image. ### Claim 17 (depends on 15) The display apparatus according to claim 15, wherein the GUI image includes a first gauge configured to be operated by the user to designate the display range and a second gauge configured to be operated by the user to designate the maximum luminance value. ### Claim 18 (depends on 15) The display apparatus according to claim 15, wherein the second controlling unit controls the display device to display a plurality of types of the reference brightness level and a plurality of types of the specific luminance corresponding to the plurality of types of the reference brightness level. ### Claim 19 (depends on 15) The display apparatus according to claim 15, wherein the second controlling unit controls the display device to display the reference brightness level in a reflectance ratio. ### Claim 20 (depends on 15) The display apparatus according to claim 15, wherein the display range is a dynamic range displayed on the display device within a dynamic range of an inputted image.