| 摘要 |
A display apparatus which does not cause an erroneous operation of a PC connected to the display apparatus even when operations for realizing various functions on the display apparatus are carried out using an indicating device such as a digitizer, enables the operation of the connected PC at the same time, and enables the operation of the display apparatus and the operation of the PC using a single indicating device without giving a feeling of incompatibility to a user. Resolution of the received image signal is changed and the resulting image is output. Switching on the output image is carried out and an image after the switching is displayed on a display screen. An indication signal containing position coordinates on the display screen and at least one type of indication command are generated according to an indication carried out on the displayed image. The indication signal is converted according to the position coordinates contained in the indication signal, and the converted indication signal is output to the image output apparatus.
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