# US 9,438,870 B2 · Display system, image display device, and method of controlling display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,438,870 B2 - Document ID: US9438870B2 - Status: Granted - Kind: B2 - Application number: 14/479,663 - Filed: 2014-09-08 - Published: 2015-03-19 - Granted: 2016-09-06 - Earliest claimed: 2013-09-19 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Naoya Nishimura - Web page: https://patentgrep.com/patent/US9438870B2 ## CPC - H04N 9/3147: {Multi-projection systems (video walls G06F3/1446)} - G03B 21/10: Projectors with built-in or built-on screen - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract A display system having a projector and a projection plate and adapted to project an image from the projector toward the projection plate to thereby display the image includes a proximity detection section adapted to detect a proximity of another display system, which has a projector and a projection plate, and is adapted to project an image from the projector toward the projection plate to thereby display the image, and a control section adapted to determine a projection image, enlarge the projection image determined, and display the projection image enlarged so as to straddle the projection plate and the projection plate of the another display system in a case in which the proximity detection section detects the proximity of the another display system. ## Claims ### Claim 1 A display system having a projection device and a projection target member, and adapted to project an image from the projection device toward the projection target member to thereby display the image, the display system comprising: a proximity detection section adapted to detect a proximity of another display system, which has a projection device and a projection target member, and is adapted to project its image from the projection device toward its projection target member to thereby display its image; and a control section adapted to; determine a projection image; enlarge the determined projection image; display the enlarged projection image so as to straddle the projection target member and the projection target member of the other display system in a case in which the proximity detection section detects the proximity of the other display system; make the projection target member and the projection target member of the other display system start division display of the projection image in a case in which the projection target member and the projection target member of the other display system have contact with each other; and make the division display be terminated in a case in which the projection target member and the projection target member of the other display system once having contact with each other are separated from each other. ### Claim 2 (depends on 1) The display system according to claim 1, wherein the control section determines either of the image projected by the projection device and the image projected by the projection device of the other display system as the projection image in the case in which the proximity detection section detects the proximity of the other display system. ### Claim 3 (depends on 1) The display system according to claim 1, further comprising: a position detection section adapted to detect a positional relationship with the other display system in a proximity state, wherein the control section generates a plurality of divided images used to project the projection image toward the projection target member and the projection target member of the other display system in a divided manner based on the positional relationship detected by the position detection section. ### Claim 4 (depends on 3) The display system according to claim 3, further comprising: a communication section adapted to transmit divided image generated by the control section to the other display system via wireless communication. ### Claim 5 (depends on 4) The display system according to claim 4, wherein the control section executes one of a process in a master mode of generating the divided images from the projection image, making the projection device project one of the divided images generated, and transmitting another of the divided images from the communication section to the other display system, and a process in a slave mode of receiving divided image transmitted from other display system, and making the projection device project the divided image received. ### Claim 6 (depends on 1) The display system according to claim 1, wherein the control section expands a projection range in the projection target member in a case in which the proximity detection section detects the proximity of the other display system. ### Claim 7 A display system having a projection device and a projection target member, and adapted to project an image from the projection device toward the projection target member to thereby display the image, the display system comprising: a proximity detection section adapted to detect a proximity of another display system, which has a projection device and a projection target member, and is adapted to project its image from the projection device toward its projection target member to thereby display its image; a selection section adapted to select one of an enlarged display mode of determining a projection image, enlarging the determined projection image, and displaying the enlarged projection image so as to straddle the projection target member and the projection target member of the other display system, and a copy display mode of displaying the image displayed on either one of the projection target member and the projection target member of the other display system on the other of the projection target member and the projection target member of the other display system in a case in which the proximity detection section detects the proximity of the other display system; and a control section adapted to control displaying in accordance with mode selected by the selection section. ### Claim 8 (depends on 7) The display system according to claim 7, wherein the selection section selects the enlarged display mode in a case in which a contact time between the projection target member and the projection target member of the other display system exceeds a predetermined time, and selects the copy display mode in a case in which the contact time between the projection target member and the projection target member of the other display system fails to exceed the predetermined time. ### Claim 9 A method of controlling a display system having a projection device and a projection target member, and adapted to project an image from the projection device toward the projection target member to thereby display the image, the method comprising: detecting a proximity of another display system, which has a projection device and a projection target member, and is adapted to project its image from the projection device toward its projection target member to thereby display its image; determining a projection image, enlarging the determined projection image, and displaying the enlarged projection image so as to straddle the projection target member and the projection target member of the other display system in a case in which the proximity of the other display system is detected in the detecting of proximity; and making the projection target member and the projection target member of the other display system start division display of the projection image in a case in which the projection target member and the projection target member of the other display system have contact with each other, and making the division display be terminated in a case in which the projection target member and the projection target member of the other display system once having contact with each other are separated from each other. ### Claim 10 A display system having a projection device and a projection target member, and adapted to project an image from the projection device toward the projection target member to thereby display the image, the display system comprising: a proximity detection section adapted to detect a proximity of another display system, which has a projection device and a projection target member, and is adapted to project its image from the projection device toward its projection target member to thereby display its image; a position detection section adapted to detect a positional relationship with the other display system in a proximity state; a control section adapted to: determine a projection image; enlarge the determined projection image; display the enlarged projection image so as to straddle the projection target member and the projection target member of the other display system in a case in which the proximity detection section detects the proximity of the other display system; and generate a plurality of divided images used to project the projection image toward the projection target member and the projection target member of the other display system in a divided manner based on the positional relationship detected by the position detection section; and a communication section adapted to transmit a divided image generated by the control section to the other display system via wireless communication, wherein the control section executes one of a process in a master mode of generating the divided images from the projection image, making the projection device project one of the divided images generated, and transmitting another of the divided images from the communication section to the other display system, and a process in a slave mode of receiving a divided image transmitted from the other display system, and making the projection device project the divided image received. ### Claim 11 A display system having a projection device and a projection target member, and adapted to project an image from the projection device toward the projection target member to thereby display the image, the display system comprising: a proximity detection section adapted to detect a proximity of another display system, which has a projection device and a projection target member, and is adapted to project its image from the projection device toward its projection target member to thereby display its image; and a control section adapted to: determine a projection image, enlarge the determined projection image; display the enlarged projection image so as to straddle the projection target member and the projection target member of the other display system in a case in which the proximity detection section detects the proximity of the other display system; and expand a projection range in the projection target member in a case in which the proximity detection section detects the proximity of the other display system.