PROJECTOR

PROBLEM TO BE SOLVED: To exactly inform the user of a problem that occurs in accordance with a projection distance and the tilt angle of a screen, regarding a projector where trapezoidal distortion is corrected in accordance with the relative tilt angle of the screen to the projector. SOLUTION: Rega...

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Bibliographische Detailangaben
1. Verfasser:	FUJIBAYASHI KAZUO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY FREQUENCY-CHANGING HOLOGRAPHY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To exactly inform the user of a problem that occurs in accordance with a projection distance and the tilt angle of a screen, regarding a projector where trapezoidal distortion is corrected in accordance with the relative tilt angle of the screen to the projector. SOLUTION: Regarding the projector for projecting a display panel on the screen through a projection optical system, and also, having a function of correcting the trapezoidal distortion generated due to the relative tilt of the screen to the projection optical system, a warning that a projected image is outside a projection depth is given when the projection distance difference in the image projected on the screen is beyond the extent of the projection depth. COPYRIGHT: (C)2006,JPO&NCIPI