Patent ID: 6831661
Filing Date: 2004-12-14
Classification: G09G,H04N

Abstract:
A projection display apparatus that projects images onto a screen, comprising:a frame memory for storing image data representing an image to be displayed; an image display signal generator for generating image display signals based on the image data stored in the frame memory; an electro-optical device for emitting light to form images in response to the image display signals; a projection optical system for projecting light emitted by the electro-optical device; an image extraction section that extracts at least a portion of an extraction target image selected arbitrarily from images given externally as an extraction image; an extraction image memory for storing extraction image data representing the extracting image; and a specific image display control section that displays a specific image represented by specific image data including the extraction image data stored in the extraction image memory in a specific operating condition, the specific operating condition including at least one of a state in which no image signal is being given to the projection display apparatus and a state in which a prescribed period has not elapsed after the startup of the projection display apparatus.