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US 2003/0151573 A1Published application
Monochromatic image display system
AssigneeFuji Photo Film Co., Ltd.
InventorsAKIRA YAMAGUCHI, EIJI OGAWA
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AssigneeFuji Photo Film Co., Ltd.
InventorsAKIRA YAMAGUCHI, EIJI OGAWA
Estimating the term…
In a monochromatic image display system, the number of tone levels which can be expressed is multiplied. As a display device, a liquid crystal panel 40 which can express each picture element 41 of a monochromatic image by three cells 41a, 41b and 41c is employed. A tone number conversion processing means 20 carries out a tone number conversion processing on an input original image signal Sorig according to the maximum number of tone levels which can be expressed by the liquid crystal panel 40, thereby obtaining a monochromatic image signal So. Luminance of the monochromatic image signal So is allotted to the cells 41a, 41b and 41c. Time modulation is carried out on each cell by a time modulation means 12 which can express four tone levels (but tone level 0) so that each cell outputs allotted luminance. In this manner, the liquid crystal panel 40 can express thirteen tone levels (4×3+1=13) in total (tone level 0 inclusive).
A monochromatic image display system comprising a display device which can express each picture element of a monochromatic image by a series of cells each of which can express tones in multiple levels, and a cell signal generating means which generates, on the basis of a monochromatic image signal determining the output luminance of a monochromatic image, a cell signal for each cell which determines the output tone level of the cell so that average of the output luminances of all the cells for each picture element corresponds to an output luminance of the picture element.
A monochromatic image display system comprising
A flat panel image display system using a flat panel-like display device characterized in that the display device is a monochromatic display device which makes a display in a color which falls within the region surrounded by points (0.174, 0), (0.4, 0.4) and (α, 0.4) as represented by co-ordinates (x, y) on a CIE chromaticity diagram, wherein α represents the x-coordinate of the intersection of a spectrum locus and a straight line y=0.4.
Dependencies are inferred from the claim text.