Abstract: A projection type display device 1 includes a memory portion 12C for storing a voice guide data 120 recorded preliminarily, associating the voice guide data 120 with the use situation; a voice reproducing portion 12B for reproducing the voice guide data 120; a light source driving portion 13, a light source 14, a liquid crystal panel 15, a lens 16 and a liquid crystal panel driving portion 17 as an image display portion for displaying images by projection; and a control portion for detecting the use situation of each portion, and simultaneously if the voice guide data 120 corresponding to the use situation exists, for obtaining the voice guide data 120 corresponding to the use situation from the memory portion 12C and for reproducing it in the voice reproducing portion 12B.

Abstract: According to one embodiment, a video output apparatus includes a processing module which executes a process for giving a predetermined display effect to an input video signal, a projecting module which generates an optical image based on the processed video signal so as to project the optical image onto a screen via a projection lens and display a video, and an output module which outputs the processed video signal to an outside.

Abstract: According to one embodiment, a projector apparatus comprises a modulator configured to modulate light emitted from a light source in accordance with an image signal, a projection lens configured to project an optical image emitted from the modulator, a detector configured to detect whether or not an optical path of the projection lens is interrupted by a lens cover, a time measurement unit configured to measure an elapsed time after the optical path is interrupted by the lens cover, and a power controller configured to turn a power off when the time measured by the time measurement unit exceeds a predetermined time period.

Abstract: According to one embodiment of the invention, the projection device features a power-supply control section which selectively supplies power from a power-supply portion. The projection device further comprises a lamp section which emits projection light and radiates the projection light; an operation portion having a plurality of operation switches; a control portion which compares input data, perhaps obtained by depression of predetermined operations switch(es) with a pre-stored authentication code and controls the power-supply control portion to supply the power to the lamp section based on the result of the comparison.