# US 10,311,828 B2 · Method, computer program, and system for measuring display light intensity of a display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,311,828 B2 - Document ID: US10311828B2 - Status: Granted - Kind: B2 - Application number: 14/344,703 - Filed: 2012-08-09 - Published: 2014-12-04 - Granted: 2019-06-04 - Earliest claimed: 2011-09-15 - Assignees: EIZO Corporation - Applicants: Kensuke Nagashima; Takafumi Kawakami; Atsuyoshi Deyama; Junro Yonemitsu - Inventors: Kensuke Nagashima; Takafumi Kawakami; Atsuyoshi Deyama; Junro Yonemitsu - Web page: https://patentgrep.com/patent/US10311828B2 ## CPC - G09G 5/04: using circuits for interfacing with colour displays - G01J 1/42: using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10) - G01J 3/0264: {Electrical interface; User interface} - G01J 3/506: {measuring the colour produced by screens, monitors, displays or CRTs} - G01J 3/52: using colour charts - G09G 5/02: characterised by the way in which colour is displayed {(details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607)} - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G 2320/0693: Calibration of display systems - G09G 2340/06: Colour space transformation - 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) - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) ## Abstract A display light measurement method which can measure color representation of a various types of display devices regardless of the specification of the display device; a computer program, and a measurement system. A measurement device connected to an optical sensor can communicate with a target display device (information terminal) to be measured. The measurement device transmits content including a color patch to the display device to cause the display device to display the content and performs a measurement on the displayed content using the optical sensor. To perform measurements on many color patches, the measurement device repeats the following: when a measurement on one color patch being displayed is complete, the measurement device transmits content including another color patch to the display device to cause the display device to display the content and performs a measurement on the content being displayed. ## Claims ### Claim 1 A method executed by a measurement device connected to an optical sensor and a display device which is a tablet information terminal independent from the measurement device and configured to communicate with the measurement device via a network communication, wherein a predetermined Web browser on operation in the display device sequentially displays, on the display device, a plurality of different images for adjustment and the measurement device measures, at a predetermined timing, light intensity of the display device displaying each image for adjustment using the optical sensor, the method comprising: a step of transmitting, by the measurement device and via the network communication, to the display device, display control information for causing the Web browser to transmit a content request to the measurement device and to display content each time the content is received; a step of, in response to the content request by the Web browser, transmitting, by the measurement device, to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; a step of displaying the image for adjustment by the Web browser; a step of measuring, by the measurement device, the light intensity of the display device displaying the image for adjustment using the optical sensor; and a changing step of changing, by the measurement device, content to be transmitted, so as to correspond to the display control information in accordance with the timing when the optical sensor performs a measurement, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file. ### Claim 2 (depends on 1) The method of claim 1, wherein the measurement device transmits, as the display control information, information identifying the image for adjustment included in the first content transmitted along with the display control information. ### Claim 3 (depends on 1) The method of claim 1, wherein the measurement device transmits, as the display control information, information instructing the display device to intermittently transmit a content request to the measurement device, and the changing step comprises: a step of detecting that a measurement on one image for adjustment being displayed is complete; and after the detecting step, a step of changing the first content comprising the one image for adjustment to the next content comprising another image for adjustment in response to a next content request from the display device. ### Claim 4 (depends on 1) The method of claim 1, wherein the measurement device transmits, as the display control information, a time during which the first content is displayed or a time during which the display device waits before transmitting a next content request. ### Claim 5 (depends on 3) The method of claim 3, wherein the measurement device transmits, as the display control information, to the display device, display control information for causing the Web browser to transmit, to the measurement device, the next content request including information identifying the next content to be displayed. ### Claim 6 (depends on 1) The method of claim 1, further comprising a step of storing, by the measurement device, information identifying an image for adjustment included in transmitted content and a result of a measurement performed on the image for adjustment included in the content being displayed in such a manner that the information and the result are associated with each other. ### Claim 7 (depends on 1) The method of claim 1, further comprising a step of generating, by the measurement device, color space information related to conversion of color space of the display device on the basis of a measurement result. ### Claim 8 A method executed by which a measurement device connected to an optical sensor, a display device which is a tablet information terminal independent from the measurement device and configured to communicate with the measurement device via a network communication, and an information processing device configured to communication with the measurement device, wherein a predetermined Web browser on operation in the display device sequentially displays, on the display device, a plurality of different images for adjustment and the measurement device measures, at a predetermined timing, light intensity of the display device displaying each image for adjustment using the optical sensor, the method comprising: a step of instructing, by the measurement device and via the network communication, the information processing device to transmit, to the display device, display control information for causing the Web browser to transmit a content request to the information processing device and to display content each time the content is received; a step of, in response to the content request by the Web browser, instructing, by the measurement device, the information processing device to transmit, by the measurement device, to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; a step of displaying the image for adjustment by the Web browser; a step of measuring, by the measurement device, the light intensity of the display device displaying the image for adjustment using the optical sensor; and a changing step of causing, by the measurement device, the information processing device to change content to be transmitted, so as to correspond to display control information in accordance with the timing when the optical sensor performs a measurement, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file. ### Claim 9 (depends on 8) The method of claim 8, wherein the information processing device transmits, as the display control information, information identifying the image for adjustment included in the first content transmitted along with the display control information. ### Claim 10 (depends on 8) The method of claim 8, wherein the information processing device transmits, as the display control information, information instructing the display device to intermittently transmit a content request to the information processing device, and the changing step comprises: a step of detecting that a measurement on one image for adjustment being displayed is complete; and after the detecting step, a step of causing the information processing device to change the first content comprising the one image for adjustment to the next content comprising another image for adjustment in response to a next content request from the display device. ### Claim 11 (depends on 8) The method of claim 8, wherein the information processing device transmits, as the display control information, a time during which the first content is displayed or a time during which the display device waits before transmitting a next content request. ### Claim 12 (depends on 10) The method of claim 10, wherein the information processing device transmits, as the display control information, to the display device, display control information for causing the Web browser to transmit the next content request including information identifying the next content to be displayed. ### Claim 13 A non-transitory storage medium storing a computer program for causing a computer connected to an optical sensor to cause a display device to sequentially display a plurality of images for adjustment by a predetermined Web browser on operation in the display device and for causing the computer to measure light intensity of the display device displaying each image for adjustment using the optical sensor, the display device being a tablet information terminal independent from the computer and configured to communicate with the computer via a network communication, the computer program causing a computer to perform: a step of transmitting, to the display device, display control information for causing the Web browser to transmit, via the network communication, a content request to the computer and to display content each time the content is received; and a step of, in response to the content request by the Web browser, transmitting to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; a step of changing content to be transmitted, so as to correspond to the display control information in accordance with the timing when the optical sensor performs a measurement, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file. ### Claim 14 A non-transitory storage medium storing a computer program for causing a computer connected to an optical sensor to cause a display device to sequentially display a plurality of images for adjustment by a predetermined Web browser on operation in the display device and for causing the computer to measure light intensity of the display device displaying each image for adjustment using the optical sensor, the display device being a tablet information terminal independent from the computer and configured to communicate with the computer via a network communication, the computer program causing a computer to perform: a step of instructing another computer to transmit, via the network communication and to the display device, display control information for causing the Web browser to transmit a content request to the other computer and to display content each time the content is received; a step of, in response to the content request by the Web browser, instructing the other computer to transmit, to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; and a step of instructing the other computer to change content to be transmitted, so as to correspond to the display control information in accordance with the timing when the optical sensor performs a measurement, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file. ### Claim 15 A measurement system comprising: a display device having a predetermined Web browser on operation; and a display light intensity measurement device configured to cause the display device to sequentially display a plurality of images for adjustment by the Web browser, the measurement device comprising means connected to an optical sensor configured to measure, at a predetermined timing, light intensity of the display device displaying each image for adjustment, wherein the display device is a tablet information terminal independent from the measurement device and configured to communicate with the measurement device via a network communication, the measurement device comprises: means configured to transmit, via the network communication and to the display device, display control information for causing the Web browser to transmit a content request to the measurement device and to display content each time the content is received; means configured to transmit, in response to the content request by the Web browser, to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; and means configured to change content to be transmitted, so as to correspond to the display control information in accordance with the timing when the optical sensor performs a measurement, and the display device comprises: means configured to receive the content and the display control information transmitted by the measurement device; and means configured to display the received content by the Web browser on the basis of the received display control information, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file. ### Claim 16 A measurement system comprising: a display device having a predetermined Web browser on operation; a display light intensity measurement device configured to cause the display device to sequentially display a plurality of images for adjustment by the Web browser, the measurement device comprising means connected to an optical sensor configured to measure, at a predetermined timing, light intensity of the display device displaying each image for adjustment; and an information processing device configured to communicate with the measurement device and the display device, wherein the display device is a tablet information terminal independent from the measurement device and configured to communicate with the measurement device via a network communication, the measurement device comprises: means configured to instruct the information processing device to transmit, via the network communication and to the display device, display control information for causing the Web browser to transmit a content request to the information processing device and to display content each time the content is received; means configured to, in response to the content request by the Web browser, instructing the information processing device to transmit, to the display device, first content comprising an image for adjustment and display control information related to a next content to be displayed; and means configured to instruct the information processing device to change content to be transmitted, so as to correspond to the display control information in accordance with the timing when the optical sensor performs a measurement, and the display device comprises: means configured to receive the content and the display control information transmitted by the information processing device; and means configured to display the received content by the Web browser on the basis of the received display control information, wherein the display control information includes reload requesting information for automatic reloading by the Web browser, the reload requesting information including information on a reload interval set in accordance with measurement time required for the optical sensor to measure one image for adjustment, the information on the reload interval is an interval indicated by META tag in an HTML file in the content, and the Web browser is configured to, upon lapse of the reload interval, automatically and spontaneously according to the specification of the META tag, reload the next content to be displayed, the next content to be displayed being determined by information in the HTML file.