# US 2019/0172383 A1 · Self-diagnostic imaging method, self-diagnostic imaging program, display device, and self-diagnostic imaging system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0172383 A1 - Document ID: US20190172383A1 - Status: Published application - Kind: A1 - Application number: 16/324,507 - Filed: 2016-08-25 - Published: 2019-06-06 - Earliest claimed: 2016-08-25 - Assignees: NEC Display Solutions, Ltd. - Applicants: NEC Display Solutions, Ltd. - Inventors: Katsuyuki MATSUI; Kiyomichi FUKUSHIMA - Web page: https://patentgrep.com/patent/US20190172383A1 ## CPC - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)} - H04N 17/04: for receivers - 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 5/02: 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 2340/06: Colour space transformation - G09G 2360/18: Use of a frame buffer in a display terminal, inclusive of the display panel - G09G 2370/12: Use of DVI or HDMI protocol in interfaces along the display data pipeline - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A display device is for displaying an image generated by an image processing device, The display device includes: a video decoding and input unit that receives an encoded image of a reference signal generated by the image processing device, and decodes the encoded image; a video display unit that performs image quality correction of the decoded image and displays, on a display panel, the image to which the image quality correction has been performed; and an image cut-out unit that cuts out an image at a position corresponding to the reference signal from an image to which the image quality correction has not been performed and transmits the cut out image to which the image quality correction has been performed, to the image processing device. ## Claims ### Claim 1 A self-diagnostic imaging method for a self-diagnostic imaging system, the self-diagnostic imaging system comprising an image processing device that generates a display image and a display device that displays the image generated by the image processing device, the method comprising: generating, by the image processing device, an image of a reference signal; encoding, by the image processing device, the image of the reference signal; decoding, by the display device, the encoded image; performing, by the display device image quality correction of the decoded image; displaying, by the display device, the image to which the image quality correction has been performed, on a display panel; cutting out, by the display device, an image at a position corresponding to the reference signal from an image to which to the image quality correction has not been performed; transmitting, by the display device the cut out image to the image processing device; and performing, by the image processing device, image diagnosis by comparing the image of the reference signal with the cut out image to which the image quality correction has not been performed. ### Claim 2 (depends on 1) The self-diagnostic imaging method according to claim 1, wherein the performing the image diagnosis comprises comparing the image of the reference signal with the encoded image to which the image quality correction has not been performed, and determining that there is a malfunction in the image processing device in a case where the image of the reference signal and the cut out image to which the image quality correction has not been performed different from each other. ### Claim 3 (depends on 1) The self-diagnostic imaging method according to claim 1, wherein the performing the image diagnosis comprises comparing the image of the reference signal with the cut out image to which the image quality correction has not been performed, and determining that there is a setting error in the image processing device in a case where the image of the reference signal and the cut out image to which the image quality correction has not been performed are different from each other. ### Claim 4 (depends on 1) The self-diagnostic imaging method according to claim 1, further comprising: changing a reception setting of the display device in a case where the image of the reference signal and the cut out image to which the image quality correction has not been performed are different from each other. ### Claim 5 (depends on 1) The self-diagnostic imaging method according to claim 1, wherein a color chart group is generated as the reference signal. ### Claim 6 (depends on 5) The self-diagnostic imaging method according to claim 5, wherein the color chart group generated as the reference signal is selectable by a user. ### Claim 7 (depends on 1) The self-diagnostic imaging method according to claim 1, wherein the encoding comprises encoding, by the image processing device, an RGB image generated as the reference signal into a YCrCb image, and the decoding comprises decoding, by the display device, the YCrCb image to obtain an RGB image. ### Claim 8 (depends on 7) The self-diagnostic imaging method according to claim 7, wherein the performing the image diagnosis includes comparing, by the image processing device, the obtained RGB image with the RGB image generated as the reference signal, one pixel at a time. ### Claim 9 A non-transitory computer-readable recoding medium storing a self-diagnostic imaging program for a self-diagnostic imaging system, the self-diagnostic imaging system comprising an image processing device that generates a display image and a display device that displays an image generated by the image processing device, the program comprising: causing the image processing device to generate an image of a reference signal; causing the image processing device to encode the image of the reference signal; causing the display device to decode the encoded image; causing the display device to perform image quality correction of the decoded image; causing the display device to perform image quality correction of the decoded image; causing the display device to display the image to which the image quality correction has been performed, on a display panel; causing the display device to cut out an image to which the image quality correction has not been performed; causing the display device to transmit the cut out image to the image processing device; and causing the image processing device to perform image diagnosis by comparing the image of the reference signal with the cut out image to which the image quality correction has not been performed. ### Claim 10 A display device for displaying an image generated by an image processing device, the display device comprising: a video decoding and input unit that receives an encoded image of a reference signal generated by the image processing device, and decodes the encoded image; a video display unit that performs image quality correction of the decoded image and displays, on a display panel, the image to which the image quality correction has been performed; and an image cut-out unit that cuts out an image at a position corresponding to the reference signal from an image to which the image quality correction has not been performed and transmits the cut out image to which the image quality correction has been performed, to the image processing device. ### Claim 11 A self-diagnostic imaging system comprising an image processing device that generates a display image and a display device that displays an image generated by the image processing device, wherein the image processing device comprises: a reference signal rendering unit that generates an image of a reference signal: and a video encoding and output unit that encodes the image of the reference signal; and an input and output comparison unit that compares an image transmitted from the display device with the image generated by the reference signal rendering unit, and the display device comprises: a video decoding and input unit that decodes the encoded image; a video display unit that performs image quality correction of the decoded image and displays, on a display panel, the image to which the image quality correction has been performed; and an image cut-out unit that cuts out an image at a position corresponding to the reference signal from an image to which the image quality correction has not been performed, and transmits the cut out image to which the image quality correction has been performed, to the image processing device. ### Claim 12 (depends on 1) The self-diagnostic imaging method according to claim 1, further comprising: displaying, on the display device, a guide indicating a display position of the image of the reference signal. ### Claim 13 (depends on 12) The self-diagnostic imaging method according to claim 12, further comprising: adjusting the display position of the image of the reference signal so as to be matched with the guide.