# US 12,190,761 B2 · Display device and method for inspecting image data thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,190,761 B2 - Document ID: US12190761B2 - Status: Granted - Kind: B2 - Application number: 18/471,747 - Filed: 2023-09-21 - Published: 2024-03-28 - Granted: 2025-01-07 - Earliest claimed: 2022-09-22 - Assignees: Lx Semicon Co., Ltd. - Applicants: Lx Semicon Co., Ltd. - Inventors: Seok Jin Jeong; Bong Sin Kwak; Man Jung Kim; Myung Yu Kim; Kwang Hee Yoon - Web page: https://patentgrep.com/patent/US12190761B2 ## CPC - 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)} - G06F 11/1004: {to protect a block of data words, e.g. CRC or checksum (G06F11/1076 takes precedence; security arrangements for protecting computers or computer systems against unauthorized activity G06F21/00)} - G09G 2310/04: Partial updating of the display screen - G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof - G09G 2380/10: Automotive applications - 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 The present disclosure provides a display device for inspecting image data that may include a data processing device configured to generate first cyclic redundancy check (CRC) data for a partial area among areas of image data included in a first frame to transmit the image data of the first frame and the first CRC data and a data driving device configured to receive the image data of the first frame and the first CRC data from the data processing device to generate second CRC data for a partial area among areas of the image data included in the first frame on the basis of the image data of the first frame and to compare the first CRC data with the second CRC data to determine whether there is an error in the partial area among areas of the image data included in the first frame. ## Claims ### Claim 1 A method for inspecting image data of a display device including a data processing device and a data driving device, the method comprising: generating, by the data processing device, first cyclic redundancy check (CRC) data for partial areas among areas of image data of a first frame and transmitting the image data of the first frame and the first CRC data to the data driving device; receiving, by the data driving device, the image data of the first frame and the first CRC data and generating second CRC data for the partial areas among areas of the image data of the first frame on the basis of the image data of the first frame; and comparing, by the data driving device, the first CRC data with the second CRC data to determine whether there is an error in the partial areas among areas of the image data of the first frame, wherein the first frame includes the image data and first horizontal line data associated with a horizontal line, the first horizontal line data includes the first CRC data, the first horizontal line data comprises a first portion and a second portion, the first portion includes CRC data, the second portion includes dummy data, CRC data for all sub-pixels included in one area of the partial areas is sequentially included in the first horizontal line data, and CRC data for all sub-pixels included in another area of the partial areas is sequentially included in the first horizontal line data. ### Claim 2 (depends on 1) The method of claim 1, wherein the transmitting of the first CRC data includes transmitting the first CRC data to the data driving device when the image data of the first frame is transmitted. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmitting of the first CRC data includes transmitting the first CRC data when each pixel data constituting the image data is transmitted. ### Claim 4 (depends on 1) The method of claim 1, wherein the first frame includes a vertical blank period, a horizontal blank period, and a period for the image data. ### Claim 5 (depends on 4) The method of claim 4, wherein the transmitting of the first CRC data includes transmitting the first CRC data at the time of transmission of the image data after the horizontal blank period is terminated. ### Claim 6 (depends on 1) The method of claim 1, wherein the first CRC data is transmitted through the same transmission line as the image data. ### Claim 7 (depends on 1) The method of claim 1, wherein the first CRC data is transmitted through a main link transmission line. ### Claim 8 (depends on 1) The method of claim 1, wherein the partial areas among areas of the image data included in the first frame comprises an image corresponding to a vehicle state. ### Claim 9 (depends on 1) The method of claim 1, wherein the transmitting of the first CRC data includes generating first CRC data for each of a plurality of partial areas among areas of the image data included in the first frame and transmitting sequentially the first CRC data for each of the plurality of partial areas for each partial area at the time of transmission of the image data. ### Claim 10 (depends on 1) The method of claim 1, wherein the generating of the first CRC data comprises dividing data corresponding to the partial areas into a plurality of periods and generating first CRC data for data corresponding to a specific period among the plurality of periods. ### Claim 11 (depends on 1) The method of claim 1, wherein the generating of the first CRC data comprises generating first CRC data for data corresponding to a sub-pixel of a specific color among data corresponding to the partial areas. ### Claim 12 A display device for inspecting image data comprising: a data processing device configured to generate first cyclic redundancy check (CRC) data for partial areas among areas of image data included in a first frame to transmit the image data of the first frame and the first CRC data; and a data driving device configured to receive the image data of the first frame and the first CRC data from the data processing device to generate second CRC data for the partial areas among areas of the image data included in the first frame on the basis of the image data of the first frame and to compare the first CRC data with the second CRC data to determine whether there is an error in the partial areas among areas of the image data included in the first frame, wherein the first frame includes the image data and first horizontal line data associated with a horizontal line, the first horizontal line data includes the first CRC data, the first horizontal line data comprises a first portion and a second portion, the first portion includes CRC data, the second portion includes dummy data, CRC data for all sub-pixels included in one area of the partial areas is sequentially included in the first horizontal line data, and CRC data for all sub-pixels included in another area of the partial areas is sequentially included in the first horizontal line data. ### Claim 13 (depends on 12) The display device of claim 12, wherein the data processing device comprises: a first CRC generator configured to generate the first CRC data for the partial areas among areas of the image data included in the first frame; and a frame data generator configured to generate data of the first frame so that the first CRC data is transmitted at the time of transmission of the image data. ### Claim 14 (depends on 13) The display device of claim 13, wherein the first CRC generator generates first CRC data for each of a plurality of partial areas among areas of the image data included in the first frame, and the frame data generator generates the data of the first frame so that the first CRC data for each of the plurality of partial areas is sequentially transmitted for each partial area at the time of transmission of the image data. ### Claim 15 (depends on 12) The display device of claim 12, wherein the data driving device comprises: a frame data receiving part configured to receive the data of the first frame transmitted from the data processing device; a second CRC generator configured to generate the second CRC data for the partial areas among areas of the image data included in the first frame; a CRC extractor configured to confirm the first CRC data received at the time of receiving image data from the data of the first frame; and a CRC checker configured to compare the first CRC data corresponding to the partial areas among the first CRC data confirmed by the CRC extractor with the second CRC data generated by the second CRC generator to determine whether there is an error in the partial areas.