| 摘要 |
PROBLEM TO BE SOLVED: To easily achieve projection, in simultaneously displaying a plurality of videos, to automatically maintain only the dimensions of an image to be displayed in an actual size constant on a display screen according to optical enlargement and reduction.SOLUTION: After a user easily selects and sets one of a plurality of images to be displayed in an actual size in simultaneously displaying the plurality of images, a projector automatically calculates to automatically maintain only the dimensions of the image to be displayed in an actual size constant on a display screen according to optical enlargement and reduction to calculate an electronic enlargement and reduction rate. Accordingly, only posters and printed matters are enlarged according to the optical enlargement and reduction, the image displayed in an actual size is maintained constant to confirm a relative size; and thereby, usability is improved, and confirmation with more reality can be achieved with simple operation. |
