# US 10,769,974 B2 · Display device, and method of controlling display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,769,974 B2 - Document ID: US10769974B2 - Status: Granted - Kind: B2 - Application number: 16/360,625 - Filed: 2019-03-21 - Published: 2019-07-18 - Granted: 2020-09-08 - Earliest claimed: 2016-08-12 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Takahiro Ano; Koichiro Ota; Kazuyoshi Kitabayashi; Kento Yamada - Web page: https://patentgrep.com/patent/US10769974B2 ## CPC - G09G 3/02: by tracing or scanning a light beam on a screen - G06F 3/0425: {using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected (tracking a projected light spot to determine a position on a display surface G06F3/0386)} - G06F 3/0488: using a touch-screen or digitiser, e.g. input of commands through traced gestures - G09G 3/002: {to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT} - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G06F 3/0304: {Detection arrangements using opto-electronic means (constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042)} - G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters - G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes - 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 A projector includes an image generation section adapted to generate a composite image including a first image based on a first image signal, a second image based on a second image signal, and a boundary line indicating a position to be a boundary between the first image and the second image, a projection section adapted to display the composite image generated by the image generation section on a screen, a position detection section adapted to detect a position of a pointing body with respect to the screen, and a control section adapted to make the image generation section generate a composite image with a boundary line moved based on the position of the pointing body detected by the position detection section. ## Claims ### Claim 1 A display device comprising: a processor programmed to: generate a composite image including a first image based on a first image signal, a second image based on a second image signal, and a boundary line between the first image and the second image; display the generated composite image on a display surface; detect a position of a pointing body with respect to the display surface; and re-generate the composite image with the boundary line moved based on the detected position of the pointing body, such that relative sizes of the first image and the second image in the composite image are changed based on the detected position of the pointing body, while the first image is displayed based on the same first image signal and the second image is displayed based on the same second image signal, wherein the composite image is re-generated with the boundary line moved based on the detected position of the pointing body without receiving a change in either the first image signal or the second image signal, and the first image is displayed based on the same first image signal and the second image is displayed based on the same second image signal before and after the re-generation. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the processor is programmed to: generate the composite image that includes an indication line at a division position that is closest to the boundary line among a plurality of division positions where the first image and the second image can be separated from each other in the composite image. ### Claim 3 (depends on 2) The display device according to claim 2, wherein the processor is programmed to: in a case in which the composite image is generated with a pointing area: detect that the pointing area of the composite image is clicked by the pointing body; and in response to detecting that the pointing area is clicked, move the boundary line of the composite image to a first division position adjacent to the boundary line among the plurality of division positions. ### Claim 4 (depends on 3) The display device according to claim 3, wherein the pointing area is superimposed on the boundary line and is moved along the boundary line. ### Claim 5 (depends on 2) The display device according to claim 2, wherein the processor is programmed to: in a case in which the first image signal is input from a first input source, display the first image on the display surface, and not display the second image on the display surface; and in response to detecting that the boundary line is moved to a position other than a predetermined position, generate the composite image, which includes the second image based on the second image signal input from a second input source different from the first input source, based on the boundary line moved. ### Claim 6 (depends on 5) The display device according to claim 5, wherein the processor is programmed to: perform a signal discrimination process on the second image signal without performing the signal discrimination process on the first image signal. ### Claim 7 (depends on 5) The display device according to claim 5, wherein the processor is programmed to: in a case in which the second input source can be selected from a plurality of sources including a first source and a second source, generate the composite image with a first pointing area corresponding to the first source and a second pointing area different from the first pointing area and corresponding to the second source. ### Claim 8 (depends on 5) The display device according to claim 5, wherein the processor is programmed to: in a case of disposing the second image in an area of the composite image where the first image has been disposed based on the boundary line, determine an area of the first image displayed in priority based on information having been set. ### Claim 9 (depends on 1) The display device according to claim 1, wherein the processor is programmed to: move the boundary line from a first boundary line position to a second boundary line position in response to detecting movement of the pointing body from a first position associated with the first boundary line position to a second position associated with the second boundary line position. ### Claim 10 (depends on 1) The display device according to claim 1, wherein the processor is programmed to: move the boundary line from a first boundary line position to a second boundary line position in response to detecting the pointing body on a first area on the display surface; and move the boundary line from the first boundary line position to a third boundary line position different from the second boundary line position in response to detecting the pointing body on a second area on the display surface. ### Claim 11 (depends on 1) The display device according to claim 1, wherein the composite image is re-generated with the boundary line moved based on the detected position of the pointing body, such that relative sizes of the first image and the second image in the composite image are changed based on the detected position of the pointing body, without changing a size of a total display area of the composite image. ### Claim 12 A method of controlling a display device, comprising: generating a composite image including a first image based on a first image signal, a second image based on a second image signal, and a boundary line between the first image and the second image; displaying the composite image having been generated on a display surface; detecting a position of a pointing body with respect to the display surface; and re-generating the composite image with the boundary line moved based on the detected position of the pointing body, such that relative sizes of the first image and the second image in the composite image are changed based on the detected position of the pointing body, while the first image is displayed based on the same first image signal and the second image is displayed based on the same second image signal, wherein the composite image is re-generated with the boundary line moved based on the detected position of the pointing body without receiving a change in either the first image signal or the second image signal, and the first image is displayed based on the same first image signal and the second image is displayed based on the same second image signal before and after the re-generation. ### Claim 13 (depends on 12) The method of controlling the display device according to claim 12, wherein the boundary line is moved from a first boundary line position to a second boundary line position in response to detecting movement of the pointing body from a first position associated with the first boundary line position to a second position associated with the second boundary line position. ### Claim 14 (depends on 12) The method of controlling the display device according to claim 12, wherein the boundary line is moved from a first boundary line position to a second boundary line position in response to detecting the pointing body on a first area on the display surface, and the boundary line is moved from the first boundary line position to a third boundary line position different from the second boundary line position in response to detecting the pointing body on a second area on the display surface. ### Claim 15 A non-transitory computer readable storage medium storing a program executable by a computer controlling a display device, the program causes the computer to: generate a composite image including a first image based on a first image signal, a second image based on a second image signal, and a boundary line between the first image and the second image; display the composite image having been generated on a display surface; detect a position of a pointing body with respect to the display surface; and re-generate the composite image with the boundary line moved based on the detected position of the pointing body, such that relative sizes of the first image and the second image in the composite image are changed based on the detected position of the pointing body, while the first image is displayed based on the same first image signal, and the second image is displayed based on the same second image signal, wherein the composite image is re-generated with the boundary line moved based on the detected position of the pointing body without receiving a change in either the first image signal or the second image signal, and the first image is displayed based on the same first image signal and the second image is displayed based on the same second image signal before and after the re-generation.