# US 2019/0377113 A1 · Picture Display Method and Electronic Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0377113 A1 - Document ID: US20190377113A1 - Status: Published application - Kind: A1 - Application number: 16/464,463 - Filed: 2017-03-31 - Published: 2019-12-12 - Earliest claimed: 2016-11-29 - Applicants: Huawei Technologies Co., Ltd. - Inventors: Rui Tao; Yali Wang; Jing Liu - Web page: https://patentgrep.com/patent/US20190377113A1 ## CPC - G02B 5/223: {containing organic substances, e.g. dyes, inks or pigments} - G06F 3/147: using display panels - G02B 5/285: {comprising deposited thin solid films (G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361)} - G09G 2320/0613: The adjustment depending on the type of the information to be displayed - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours - G09G 2360/144: the light being ambient light - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - G09G 2380/08: Biomedical applications - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 This application discloses a picture display method and an electronic device, and relates to the field of electronic device technologies. The picture display method provided in this application includes: determining, by an electronic device, a type of content included in a to-be-displayed picture; and when to-be-displayed content of a first type is included, reducing, by the electronic device upon displaying the to-be-displayed picture, a blue light component of a pixel in an area in which the to-be-displayed content of the first type is located. This application is applied to a process in which the electronic device displays a picture. ## Claims ### Claim 1 A picture display method, applied to an electronic device, wherein the method comprises: determining, by the electronic device, a type of content comprised in a to-be-displayed picture; and when to-be-displayed content of a first type is comprised, reducing, by the electronic device upon displaying the to-be-displayed picture, a blue light component in an area in which the to-be-displayed content of the first type is located. ### Claim 2 (depends on 1) The method according to claim 1, wherein the determining, by the electronic device, a type of content comprised in a to-be-displayed picture specifically comprises: obtaining, by the electronic device, to-be-displayed content comprised in the to-be-displayed picture; extracting, by the electronic device, a feature of the to-be-displayed content; and performing, by the electronic device, pattern recognition based on the feature of the to-be-displayed content, and determining a type of the to-be-displayed content. ### Claim 3 (depends on 1) The method according to claim 1, wherein the determining, by the electronic device, a type of content comprised in a to-be-displayed picture further specifically comprises: determining, by the electronic device, a type of a to-be-displayed file; and determining, by the electronic device based on the type of the to-be-displayed file, the type of the content comprised in the to-be-displayed picture. ### Claim 4 (depends on 1) The method according to claim 1, wherein the reducing, by the electronic device upon displaying the to-be-displayed picture, a blue light component in an area in which the to-be-displayed content of the first type is located specifically comprises: reducing, by the electronic device upon displaying the to-be-displayed picture, a value of a B component in an RGB value of each pixel in the area in which the to-be-displayed content of the first type is located. ### Claim 5 (depends on 1) The method according to claim 1, wherein the reducing, by the electronic device upon displaying the to-be-displayed picture, a blue light component in an area in which the to-be-displayed content of the first type is located further specifically comprises: determining, by the electronic device upon displaying the to-be-displayed picture, a ratio of a size of the area in which the to-be-displayed content of the first type is located to that of a display of the electronic device; and when the ratio is greater than a first value, reducing, by the electronic device, blue light components in all areas of the display of the electronic device. ### Claim 6 (depends on 5) The method according to claim 5, wherein the reducing, by the electronic device upon displaying the to-be-displayed picture, blue light components in all areas of the display of the electronic device comprises: lowering, by the electronic device upon displaying the to-be-displayed picture, a display color temperature of the display of the electronic device. ### Claim 7 (depends on 1) The method according to claim 1, wherein the first type comprises a character. ### Claim 8 (depends on 1) The method according to claim 1, wherein when the electronic device displays the to-be-displayed picture, the method further comprises: reducing, by the electronic device, a blue light component in a blank area of the to-be-displayed picture. ### Claim at position 9 9-16. (canceled) ### Claim 17 An electronic device, comprising at least one processor and a display, wherein: the at least one processor is configured to: determine a type of content comprised in a to-be-displayed picture; and when the to-be-displayed picture comprises to-be-displayed content of a first type, reduce a blue light component in an area in which the to-be-displayed content of the first type is located; and the display is configured to display a to-be-displayed picture obtained after processing by the at least one processor. ### Claim 18 (depends on 17) The electronic device according to claim 17, wherein the determining a type of content comprised in a to-be-displayed picture comprises: obtaining to-be-displayed content comprised in the to-be-displayed picture; extracting a feature of the to-be-displayed content; and performing pattern recognition based on the feature of the to-be-displayed content, and determining a type of the to-be-displayed content. ### Claim 19 (depends on 17) The electronic device according to claim 17, wherein the determining a type of content comprised in a to-be-displayed picture comprises: determining a type of a to-be-displayed file; and determining, based on the type of the to-be-displayed file, the type of the content comprised in the to-be-displayed picture. ### Claim 20 (depends on 17) The electronic device according to claim 17, wherein the reducing a blue light component in an area in which the to-be-displayed content of the first type is located comprises: reducing a value of a B component in an RGB value of each pixel in the area in which the to-be-displayed content of the first type is located. ### Claim 21 (depends on 17) The electronic device according to claim 17, wherein the at least one processor is further configured to: determine a ratio of a size of the area in which the to-be-displayed content of the first type is located to that of the display; and when the ratio is greater than a first value, reduce blue light components in all areas of the display. ### Claim 22 (depends on 21) The electronic device according to claim 21, wherein the reducing blue light components in all areas of the display comprises: lowering a display color temperature of the display of the electronic device. ### Claim 23 (depends on 17) The electronic device according to claim 17, wherein the first type comprises a character. ### Claim 24 (depends on 17) The electronic device according to claim 17, wherein the at least one processor is further configured to reduce a blue light component in a blank area of the to-be-displayed picture. ### Claim 25 A computer readable storage medium, wherein the computer readable storage medium stores an instruction, and when the instruction runs on an electronic device, the instruction causes the electronic device to: determine, by the electronic device, a type of content comprised in a to-be-displayed picture; and when to-be-displayed content of a first type is comprised, reduce, by the electronic device upon displaying the to-be-displayed picture, a blue light component in an area in which the to-be-displayed content of the first type is located. ### Claim 26 (canceled) ### Claim 27 (depends on 25) The storage medium according to claim 25, wherein the determining, by the electronic device, a type of content comprised in a to-be-displayed picture specifically comprises: obtaining, by the electronic device, to-be-displayed content comprised in the to-be-displayed picture; extracting, by the electronic device, a feature of the to-be-displayed content; and performing, by the electronic device, pattern recognition based on the feature of the to-be-displayed content, and determining a type of the to-be-displayed content. ### Claim 28 (depends on 25) The storage medium according to claim 25, wherein the determining, by the electronic device, a type of content comprised in a to-be-displayed picture further specifically comprises: determining, by the electronic device, a type of a to-be-displayed file; and determining, by the electronic device based on the type of the to-be-displayed file, the type of the content comprised in the to-be-displayed picture.