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Title:
IMAGE DISPLAY DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP2008176024
Kind Code:
A
Abstract:

To reduce the light source electric power of a field sequential image display device and a projector.

The image display device is equipped with a control means 3 capable of turning off a solid light source 1 at the timing of any during one color modulation period T based on the content of image data. Also, the image display device is further equipped with a bit discrimination means 3 (reference numeral is commonly used) for discriminating the presence or absence of the bits of all pixels for every color and turns off the solid light source 1 at the timing during the course of the one color modulation period T according to the image data. Also, the display device is equipped with a maximum brightness detection means which detects the maximum brightness for every pixel in place of the bit discrimination means, and turns off the remaining period of the one color modulation period T according to the maximum brightness of the remaining period of the one color modulation period T. The projector includes a projection optical system capable of projecting the image complying with the image data in such image display device E.


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Inventors:
WAKABAYASHI SHUICHI
Application Number:
JP2007009012A
Publication Date:
July 31, 2008
Filing Date:
January 18, 2007
Export Citation:
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Assignee:
SEIKO EPSON CORP
International Classes:
G09G3/34; G02B27/00; G03B21/00; G03B21/14; G09G3/20; G09G3/36; H04N5/74; H04N9/31
Domestic Patent References:
JP2004126470A2004-04-22
JPH10326080A1998-12-08
JP2005025160A2005-01-27
JP2005181528A2005-07-07
Attorney, Agent or Firm:
Kazuya Nishi
Masatake Shiga
Masakazu Aoyama