| 摘要 |
A projector (1) is provided with a digital camera section (16) and is constructed in such a way that a memory card (4) is attachable to and detachable from the projector. During projection of a document, the image of a screen (S) in a document- projected state is picked up in accordance with an image pickup operation, done by a user, to thereby acquire a document image (G1) after which the image of the screen (S) in a non-projection state where projection of the document is stopped is picked up to thereby acquire a handwritten information image (G2) which reflects only handwritten information directly written on the screen (S). Both images (G1, G2) are recorded in the memory card (4) in association with each other by a predetermined method. With the memory card (4) attached to a personal computer or the like, the handwritten information image (G2) can be used on the personal computer. At that time, by checking the associated document image (G1), it is possible to discriminate to which document (or document page) the handwritten information reflected on the handwritten information image (G2) corresponds.
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