PROJECTOR APPARATUS

PROBLEM TO BE SOLVED: To raise a video quality level of a projection image by suppressing fall of vividness in a chromatic area included in an image data, and by reinforcing illumination in an achromatic area. SOLUTION: A white-boost control circuit 71 controls reinforcement of a light quantity used...

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Bibliographische Detailangaben
1. Verfasser:	NISHI NOBUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CINEMATOGRAPHY CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To raise a video quality level of a projection image by suppressing fall of vividness in a chromatic area included in an image data, and by reinforcing illumination in an achromatic area. SOLUTION: A white-boost control circuit 71 controls reinforcement of a light quantity used for forming the projection image to an area which is the achromatic area detected by an achromatic area detection circuit 86 and is a light part area detected by a light part detection circuit 87. Then, a reinforcement amount of the projection image is varied according to an average luminance level of each frame detected by an average video level detection circuit 88 and a video chromatic percentage detected by a video chromatic percentage detection circuit 89. COPYRIGHT: (C)2007,JPO&INPIT