# US 12,008,964 B2 · Display device and method of driving the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,008,964 B2 - Document ID: US12008964B2 - Status: Granted - Kind: B2 - Application number: 17/338,961 - Filed: 2021-06-04 - Published: 2021-12-23 - Granted: 2024-06-11 - Earliest claimed: 2020-06-19 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Byung Ki Chun; Hyeon Min Kim; Young Wook Yoo; Jun Gyu Lee; Hyun Jun Lim - Web page: https://patentgrep.com/patent/US12008964B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3275: Details of drivers for data electrodes - G09G 3/2007: {Display of intermediate tones} - G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)} - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters - G09G 2320/0257: Reduction of after-image effects - G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements - 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) ## Abstract A display device includes pixels, an image converter which generates a second image by correcting grayscales of a first logo in a first image for the pixels, and a data driver which provides data signals corresponding to the second image to the pixels. The image converter detects the first logo based on value and saturation of the first image, generates first map data corresponding to the first logo, and specifies pixels corresponding to the first logo based on the first map data. ## Claims ### Claim 1 A display device comprising: pixels; an image converter which generates a second image by correcting grayscales of a first logo in a first image for the pixels; and a data driver which provides data signals corresponding to the second image to the pixels, wherein the image converter detects the first logo based on value and saturation of the first image, generates first map data corresponding to the first logo, and specifies pixels corresponding to the first logo based on the first map data, wherein the image converter includes a first logo detector which generates first sub-map data based on the value of the first image, generates second sub-map data based on the saturation of the first image, and generates the first map data by combining the first sub-map data and the second sub-map data. ### Claim 2 (depends on 1) The display device of claim 1, wherein the image converter detects a second logo in the first image, generates second map data corresponding to the second logo, specifies pixels corresponding to the second logo based on the second map data, and generates the second image by further correcting grayscales of the second logo. ### Claim 3 (depends on 2) The display device of claim 2, wherein the image converter includes: a second logo detector which generates the second map data based on a white mark of the first image; a logo determiner which generates third map data using the first map data and the second map data; and a grayscale converter which specifies the pixels corresponding to the first logo and the pixels corresponding to the second logo based on the third map data, and generates the second image by converting grayscales of the pixels corresponding to the first logo and the pixels corresponding to the second logo in the first image. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first logo detector includes a coordinate converter which converts the first image of RGB color space coordinates to a third image of HSV color space coordinates. ### Claim 5 (depends on 4) The display device of claim 4, wherein the first logo detector further includes: a first map data extractor which generates the first sub-map data corresponding to an area having a value equal to or greater than a threshold value among the third image; and a second map data extractor which generates the second sub-map data corresponding to an area having a saturation equal to or greater than a threshold saturation among the third image. ### Claim 6 (depends on 3) The display device of claim 3, wherein the first map data is generated based on an intersection of the first sub-map data and the second sub-map data. ### Claim 7 (depends on 3) The display device of claim 3, wherein the second logo detector generates the second map data corresponding to an area having a white mark equal to or greater than a threshold white mark in the first image. ### Claim 8 (depends on 7) The display device of claim 7, wherein the white mark is a grayscale value of the first image. ### Claim 9 (depends on 3) The display device of claim 3, wherein the second logo detector generates the second map data based on the value of the first image. ### Claim 10 (depends on 3) The display device of claim 3, wherein the third map data is generated based on a combination of the first map data and the second map data. ### Claim 11 (depends on 3) The display device of claim 3, wherein the first logo detector and the second logo detector generate the first map data and the second map data based on an Otsu binarization method. ### Claim 12 (depends on 2) The display device of claim 2, wherein the first logo includes a color mark, and the second logo includes a white mark. ### Claim 13 A method of driving a display device, the method comprising: detecting a first logo in a first image based on value and saturation of the first image; generating first map data corresponding to the first logo; detecting a second logo in the first image based on a white mark of the first image; generating second map data corresponding to the second logo; generating third map data using the first map data and the second map data; specifying pixels corresponding to the first logo and pixels corresponding to the second logo based on the third map data; and generating a second image by correcting grayscales of the pixels corresponding to the first logo and the pixels corresponding to the second logo in the first image, wherein the generating the first map data includes: converting the first image to a third image; generating first sub-map data corresponding to an area having a value equal to or greater than a threshold value among the third image; generating second sub-map data corresponding to an area having a saturation equal to or greater than a threshold saturation among the third image; and generating the first map data by combining the first sub-map data and the second sub-map data. ### Claim 14 (depends on 13) The method of claim 13, wherein the generating the first map data includes: converting the first image of RGB color space coordinates to the third image of HSV color space coordinates. ### Claim 15 (depends on 14) The method of claim 14, wherein the first map data is generated based on an intersection of the first sub-map data and the second sub-map data. ### Claim 16 (depends on 13) The method of claim 13, wherein the second map data is generated corresponding to an area having a white mark equal to or greater than a threshold white mark in the first image. ### Claim 17 (depends on 16) The method of claim 16, wherein the white mark is a grayscale value of the first image. ### Claim 18 (depends on 13) The method of claim 13, wherein the second map data is generated based on the white mark and the value of the first image. ### Claim 19 (depends on 13) The method of claim 13, wherein the third map data is generated based on a combination of the first map data and the second map data.