Projection system, projector, method of controlling projectors and program therefor

A projector used for a tiling projection comprising:

• arrangement information generating section that generates arrangement information relating to the arranged position of its own when the tiling projection is performed;
• and
• write start position calculating section that calculates write start position of the image information of its own on the basis of the arrangement information and overlap information relating to ranges of the mutually overlapped areas of the projected images so that the image information is written also in the overlapped areas of the projected images at the same timing when the projector starts writing of the image information of the amount corresponding to one frame simultaneously with other projectors.

A method of controlling projectors used for the tiling projection comprising:

• generating arrangement information relating to an arrangement position of its own when the tiling projection is performed;
• and
• calculating write start position of the image information of its own on the basis of the arrangement information and overlap information relating to ranges of the mutually overlapped areas of the projected images so that the image information is written also in the overlapped areas of the projected images at the same timing when the projector starts writing of the image information of the amount corresponding to one frame simultaneously with other projectors.