| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a projection system and an instruction position specification method which can correctly reflect an instruction position with respect to a projection image on an information processor even when projection images are projected by a plurality of projection devices.SOLUTION: Each of a plurality of projectors 20 projects a partial projection image and projects one or more pattern images for specifying the own projector 20 and specifying the position on the partial projection image by overlapping it on the partial projection image periodically. An electronic pen 30 detects the one or more pattern images at the instruction position with respect to each of the plurality of partial projection images, specifies the projector 20 projecting the partial projection image and the instruction position, and transmits instruction position information indicating the instruction position to the projector 20. Each of the plurality of projectors 20 transmits to a PC 10 the instruction position information together with projection device identification information for identifying the own projector 20 when the instruction position information is transmitted.</p> |
