US 12,231,825 B1
Operating method for multi-screen projection system
Takuya Shimizu, Osaka (JP); and Shinji Onodera, Osaka (JP)
Assigned to MAXELL, LTD., Kyoto (JP)
Filed by MAXELL, LTD., Kyoto (JP)
Filed on Oct. 10, 2024, as Appl. No. 18/911,799.
Application 18/911,799 is a continuation of application No. 18/640,245, filed on Apr. 19, 2024.
Application 18/640,245 is a continuation of application No. 18/394,336, filed on Dec. 22, 2023, granted, now 12,010,465, issued on Jun. 11, 2024.
Application 18/394,336 is a continuation of application No. 17/967,088, filed on Oct. 17, 2022, granted, now 11,895,445, issued on Feb. 6, 2024.
Application 17/967,088 is a continuation of application No. 17/346,677, filed on Jun. 14, 2021, granted, now 11,509,872, issued on Nov. 22, 2022.
Application 17/346,677 is a continuation of application No. 16/850,326, filed on Apr. 16, 2020, granted, now 11,064,169, issued on Jul. 13, 2021.
Application 16/850,326 is a continuation of application No. 16/215,198, filed on Dec. 10, 2018, granted, now 10,666,915, issued on May 26, 2020.
Application 16/215,198 is a continuation of application No. 15/510,160, granted, now 10,205,920, issued on Feb. 12, 2019, previously published as PCT/JP2016/059809, filed on Mar. 28, 2016.
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 9/31 (2006.01); G03B 21/20 (2006.01); G06F 3/0482 (2013.01)
CPC H04N 9/3147 (2013.01) [G03B 21/2006 (2013.01); G03B 21/206 (2013.01); G06F 3/0482 (2013.01); H04N 9/3155 (2013.01); H04N 9/3182 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An operating method for a multi-screen projection system, comprising:
overlapping projection areas of videos projected by a plurality of projection video display apparatuses included in the multi-screen projection system partially, a first projection video display apparatus and a second projection video display apparatus are included in the plurality of projection video display apparatuses,
connecting the first projection video display apparatus and the second projection video display apparatus for transmitting a control information from the first projection video display apparatus to the second projection video display apparatus,
approximating brightness of projection lights of the plurality of projection video display apparatuses,
setting a multi-screen projection mode for the first projection video display apparatus among a plurality of display modes,
setting a multi-screen projection mode for the second projection video display apparatus among a plurality of display modes,
providing a video from an information processing apparatus to at least one of the first projection video display apparatus and the second projection video display apparatus, based on a first video processed by the information processing apparatus,
projecting lights of videos from the plurality of projection video display apparatuses, the videos being projected to be combined as one video, wherein a light of a second video is projected by the first projection video display apparatus, a range of the second video is a part of a range of the first video processed by the information processing apparatus, and a light of a third video is projected by the second projection video display apparatus, and a range of the third video is another part of the range of the first video processed by the information processing apparatus,
executing a first variable light adjusting control to adjust brightness of the light source of the second projection video display apparatus, based on a first control information which is transmitted from the first projection video display apparatus to the second projection video display apparatus, so as to make the first variable light adjusting control in the second projection video display apparatus inter-locked with variable light adjusting control of adjusting brightness of a light source of the first projection video display apparatus, and
executing a second variable light adjusting control to adjust a light amount of the optical system of the second projection video display apparatus mechanically, the light amount being varied by moving or rotating a mechanism in the second projection video display apparatus in the second variable light adjusting control, based on a second control information which is transmitted from the first projection video display apparatus to the second projection video display apparatus, so as to make the second variable light adjusting control in the second projection video display apparatus inter-locked with variable light adjusting control of adjusting a light amount of an optical system mechanically by moving or rotating a mechanism in the first projection video display apparatus.