# US 11,907,738 B2 · Image processing method and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,907,738 B2 - Document ID: US11907738B2 - Status: Granted - Kind: B2 - Application number: 17/645,317 - Filed: 2021-12-21 - Published: 2023-01-12 - Granted: 2024-02-20 - Earliest claimed: 2021-07-12 - Assignees: Realtek Semiconductor Corp. - Applicants: Realtek Semiconductor Corporation - Inventors: Yuh-Wey Lin; Chun-Hao Huang - Web page: https://patentgrep.com/patent/US11907738B2 ## CPC - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G06F 9/451: Execution arrangements for user interfaces - G06F 3/0481: based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance - G06F 3/0484: for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range - G06F 3/04842: Selection of displayed objects or displayed text elements (G06F3/0482 takes precedence) - G06F 3/1423: {controlling a plurality of local displays, e.g. CRT and flat panel display} - G06F 3/1431: {using a single graphics controller} - G09G 2310/0232: Special driving of display border areas - G09G 2340/04: Changes in size, position or resolution of an image - G09G 2370/042: for monitor identification - 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 An image processing method applied to a display device having a processing circuit and a screen and includes: receiving a first image from one of a plurality of electronic devices; detecting whether the first image has a black border area; and if the first image has the black border area, performing a first display operation, wherein performing the first display operation includes: removing the black border area of the first image, to generate a second image; adjusting the size of the second image according to the size of a display area of the screen; calculating a first blank area of the screen based on the adjusted second image; requesting a third image from another one of the electronic devices according to the size of the first blank area; and filling the display area of the screen with the adjusted second image and the third image. ## Claims ### Claim 1 An image processing method applied to a display device having a processing circuit and a screen, comprising: by the processing circuit, receiving a first image from one of a plurality of electronic devices; by the processing circuit, detecting whether the first image has a black border area; and if the first image has the black border area, by the processing circuit, performing a first display operation, wherein performing the first display operation comprises: removing the black border area of the first image, to generate a second image; adjusting the size of the second image according to the size of a display area of the screen; calculating a first blank area of the screen based on the adjusted second image; requesting a third image from another one of the electronic devices according to the size of the first blank area; and filling the display area of the screen with the adjusted second image and the third image. ### Claim 2 (depends on 1) The image processing method of claim 1, wherein the third image has no black borders and has the same size as the first blank area. ### Claim 3 (depends on 1) The image processing method of claim 1, wherein the processing circuit adjusts the size of the second image proportionally. ### Claim 4 (depends on 1) The image processing method of claim 1, further comprising: if the first image does not have the black border area, by the processing circuit, performing a second display operation, wherein performing the second display operation comprises: adjusting the size of the first image according to the size of the display area; calculating a second blank area of the screen based on the adjusted first image; requesting a fourth image from the another one of the electronic devices according to the size of the second blank area; and filling the display area of the screen with the adjusted first image and the fourth image. ### Claim 5 (depends on 4) The image processing method of claim 4, wherein the fourth image has no black borders and has the same size as the second blank area. ### Claim 6 (depends on 4) The image processing method of claim 4, wherein the processing circuit adjusts the size of the first image proportionally. ### Claim 7 (depends on 1) The image processing method of claim 1, wherein detecting whether the first image has the black border area comprises: by the processing circuit, scanning a plurality of pixels of the first image, to obtain a plurality of data values corresponding to the pixels; by the processing circuit, searching an image area according to a distribution of the data values; and if the image area is different from the first image in size, by the processing circuit, determining that the first image has the black border area. ### Claim 8 (depends on 7) The image processing method of claim 7, wherein data values of all pixels in the black border area are all corresponding to the lowest gray scale, and data values of all pixels in the image area are not all corresponding to the lowest gray scale. ### Claim 9 (depends on 7) The image processing method of claim 7, wherein detecting whether the first image has the black border area further comprises: if the image area has the same size as the first image, by the processing circuit, determining that the first image does not have the black border area. ### Claim 10 (depends on 7) The image processing method of claim 7, wherein removing the black border area of the first image comprises: by the processing circuit, cutting the first image without breaking the image area, to form the second image. ### Claim 11 A display device, comprising: a screen having a display area; and a processing circuit coupled to the screen and configured to perform operations of: receiving a first image from one of a plurality of electronic devices; detecting whether the first image has a black border area; and if the first image has the black border area, performing a first display operation, wherein performing the first display operation comprises: removing the black border area of the first image, to generate a second image; adjusting the size of the second image according to the size of a display area of the screen; calculating a first blank area of the screen based on the adjusted second image; requesting a third image from another one of the electronic devices according to the size of the first blank area; and filling the display area of the screen with the adjusted second image and the third image. ### Claim 12 (depends on 11) The display device of claim 11, wherein the third image has no black borders and has the same size as the first blank area. ### Claim 13 (depends on 11) The display device of claim 11, wherein the processing circuit adjusts the size of the second image proportionally. ### Claim 14 (depends on 11) The display device of claim 11, wherein the operations further comprises: if the first image does not have the black border area, performing a second display operation, wherein performing the second display operation comprises: adjusting the size of the first image according to the size of the display area; calculating a second blank area of the screen based on the adjusted first image; requesting a fourth image from the another one of the electronic devices according to the size of the second blank area; and filling the display area of the screen with the adjusted first image and the fourth image. ### Claim 15 (depends on 14) The display device of claim 14, wherein the fourth image has no black borders and has the same size as the second blank area. ### Claim 16 (depends on 14) The display device of claim 14, wherein the processing circuit adjusts the size of the first image proportionally. ### Claim 17 (depends on 11) The display device of claim 11, wherein detecting whether the first image has the black border area comprises: scanning a plurality of pixels of the first image, to obtain a plurality of data values corresponding to the pixels; searching an image area according to a distribution of the data values; and if the image area is different from the first image in size, determining that the first image has the black border area. ### Claim 18 (depends on 17) The display device of claim 17, wherein data values of all pixels in the black border area are all corresponding to the lowest gray scale, and data values of all pixels in the image area are not all corresponding to the lowest gray scale. ### Claim 19 (depends on 17) The display device of claim 17, wherein detecting whether the first image has the black border area further comprises: if the image area has the same size as the first image, determining that the first image does not have the black border area. ### Claim 20 (depends on 17) The display device of claim 17, wherein removing the black border area of the first image comprises: cutting the first image without breaking the image area, to form the second image.