FIELD-SEQUENTIAL IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
First Claim
1. A field-sequential image display device comprising:
- a subframe data generation unit for generating output brightness data corresponding to a plurality of subframes based on input brightness data corresponding to a plurality of color components; and
a display unit for displaying the plurality of subframes in one frame period in accordance with a video signal based on the output brightness data,wherein the subframe data generation unit generates the output brightness data with regard to each pixel based on the input brightness data by determining a distribution ratio for each pixel based on brightness of the pixel and brightness of neighboring pixels, and distributing the brightness of the pixel to the plurality of subframes in accordance with the distribution ratio.
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Abstract
A subframe data generation unit 12 selects pixels sequentially and performs the following processing on the selected pixel P. The minimum value of brightness Dr, Dg, Db of three colors is defined as distributed brightness Ds, and a distribution ratio α is set to a value of 1 at which color breakup is the smallest. An evaluation value Qi related to a color difference when aline of sight moves is calculated based on brightness of the selected pixel P and brightness of neighboring pixels Pi (i=1 to N), and the distribution ratio α is decreased in steps until the maximum value Qmax of the evaluation value Qi is less than or equal to a threshold value Qth. The brightness Dr, Dg, Db of three colors is converted to brightness Ew, Er, Eg, Eb of four colors using the distribution ratio α determined for each pixel. This suppresses irregular flicker that occurs in the vicinity a boundary of pixels.
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Citations
14 Claims
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1. A field-sequential image display device comprising:
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a subframe data generation unit for generating output brightness data corresponding to a plurality of subframes based on input brightness data corresponding to a plurality of color components; and a display unit for displaying the plurality of subframes in one frame period in accordance with a video signal based on the output brightness data, wherein the subframe data generation unit generates the output brightness data with regard to each pixel based on the input brightness data by determining a distribution ratio for each pixel based on brightness of the pixel and brightness of neighboring pixels, and distributing the brightness of the pixel to the plurality of subframes in accordance with the distribution ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A field-sequential image display method comprising:
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a step of generating output brightness data corresponding to a plurality of subframes based on input brightness data corresponding to a plurality of color components; and a step of displaying the plurality of subframes in one frame period in accordance with a video signal based on the output brightness data, wherein in the step of generating, the output brightness data is generated with regard to each pixel based on the input brightness data by determining a distribution ratio for each pixel based on brightness of the pixel and brightness of neighboring pixels, and distributing the brightness of the pixel to the plurality of subframes in accordance with the distribution ratio.
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Specification