Patent ID: 8016423
Filing Date: 2011-09-13
Classification: G03B

Abstract:
1. A projection device comprising: input means for inputting an image signal; storage means for storing the image signal input by the input means with identification information attached thereto; projection means for forming and projecting an optical image corresponding to the image signal input by the input means; and projection control means for controlling the projection means to project a single image corresponding to both an image signal currently input by the input means and at least one image signal already stored in the storage means, wherein the single image comprises a plurality of screens respectively corresponding to the currently input and already stored image signals, and each screen includes a display of the identification information of the corresponding currently input and already stored image signals, wherein the identification information includes an order number corresponding to an order of input of the inputted image signals, and the storage means stores a total number of the inputted image signals, and wherein the display of the identification information of the image signal currently input by the input means is different from the display of the identification information of the image signal already stored in the storage means, and the order number of the image signal currently input by the input means matches the total number of the inputted image signals.