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US7088372B2
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Image display apparatus, image display method and computer-readable recording medium storing image display program
Assignee: Seiko Epson Corp
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Filing: 2003-06-02
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Granted: 2006-08-08
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Expires: 2023-06-02
Abstract
Abstract An image display apparatus in which image signals of a plurality of primary colors are transformed by an image processing section into color space that includes lightness and chromaticity. When the chromaticity (color vividness) in this color space is being corrected, the correction method is changed in accordance with the optical modulation state of the display apparatus. If optical modulation is performed, then correction is made to lower the chromaticity, while correction is made to raise the chromaticity when there is no optical modulation.
Inventors
- 👤 Shohei Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:09
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3141; H04N9/315; H04N9/3155; H04N9/3179; H04N9/3182
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
131 words
An image display apparatus that adjusts a displayed image by changing a flux of light for displaying the image, the apparatus comprising: an expansion device that expands brightness level of image signals of a plurality of primary colors of a displayed image; an image signal transformation device that transforms image signals expanded by the expansion device into color space that includes chromaticity and lightness; a prediction device that predicts chromaticity of the color space when the flux of light is changed; a correction device that corrects an original chromaticity in the color space in accordance with a prediction made by the prediction device; and a color space transformation device that transforms color space that includes the chromaticity corrected by the correction device into image signals of a plurality of primary colors.
Claim 2
Dependent Claim
131 words
An image display apparatus that adjusts a displayed image by changing a flux of light for displaying the image, the apparatus comprising: an expansion device that expands brightness level of image signals of a plurality of primary colors of a displayed image; an image signal transformation device that transforms image signals expanded by the expansion device into color space that includes chromaticity and lightness; a prediction device that predicts chromaticity of the color space when the flux of light is changed; a correction device that corrects an original chromaticity in the color space in accordance with a prediction made by the prediction device; and a color space transformation device that transforms color space that includes the chromaticity corrected by the correction device into image signals of a plurality of primary colors.
Claim 3
Dependent Claim
43 words
The image display apparatus according to claim 1 , further comprising a detection device that detects a flux of light displayed at a time when a display is darkest, wherein the correction device makes a correction based on the flux of displayed light.
Claim 4
Dependent Claim
62 words
An image display apparatus according to claim 2 , wherein the expansion device makes an expansion based on predetermined expansion coefficients, wherein the prediction device predicts the chromaticity based on offset values, at least one of the expansion coefficients, and a flux of leakage light, and wherein the correction device makes a correction based on a chromaticity predicted by the prediction device.
Claim 5
Dependent Claim
43 words
An image display apparatus according to claim 3 , further comprising a selection device that selects one of a plurality of chromaticities predicted by the prediction device, wherein the correction device makes a correction based on a chromaticity selected by the selection device.
Claim 6
Dependent Claim
16 words
The image display apparatus according to claim 1 , wherein the color space is HSV space.
Claim 7
Dependent Claim
16 words
The image display apparatus according to claim 1 , wherein the color space is Yuv space.
Claim 8
Dependent Claim
110 words
An image display method for adjusting a displayed image by changing a flux of light for displaying the image, the method comprising the steps of: expanding brightness level of image signals of a plurality of primary colors of a displayed image; transforming image signals expanded in the expanding step into color space that includes chromaticity and lightness; predicting chromaticity of the color space when the flux of light is changed; correcting an original chromaticity in the color space in accordance with a prediction made in the predicting step; and transforming color space that includes a chromaticity corrected in the correcting step into image signals of a plurality of primary colors.
Claim 9
Dependent Claim
110 words
An image display method for adjusting a displayed image by changing a flux of light for displaying the image, the method comprising the steps of: expanding brightness level of image signals of a plurality of primary colors of a displayed image; transforming image signals expanded in the expanding step into color space that includes chromaticity and lightness; predicting chromaticity of the color space when the flux of light is changed; correcting an original chromaticity in the color space in accordance with a prediction made in the predicting step; and transforming color space that includes a chromaticity corrected in the correcting step into image signals of a plurality of primary colors.
Claim 10
Dependent Claim
94 words
The image display method according to claim 7 , further comprising: detecting a flux of light displayed at a time when a display is darkest, wherein the correcting step makes a correction based on the detected flux of displayed light, and the expanding step makes an expansion based on predetermined expansion coefficients; and wherein the predicting step comprises predicting the chromaticity based on offset values, at least one of the expansion coefficients, and a flux of leakage light, and the correcting step makes a correction based on a chromaticity predicted in the predicting step.
Claim 11
Dependent Claim
16 words
The image display method according to claim 7 , wherein the color space is HSV space.
Claim 12
Dependent Claim
16 words
The image display method according to claim 7 , wherein the color space is Yuv space.
Claim 13
Dependent Claim
138 words
A computer-readable recording medium storing an image display program for adjusting a displayed image by changing a flux of light, the program executable on a computer, the program performing: an expansion function that expands brightness level of image signals of a plurality of primary colors of a displayed image; an image signal transformation function that transforms image signals expanded by the expansion function into color space that includes chromaticity and lightness; a prediction function that predicts chromaticity of the color space when the flux of light is changed; a correction function that corrects an original chromaticity in the color space in accordance with a prediction made by the prediction function; and a color space transformation function that transforms color space that includes a chromaticity corrected by the correction function into image signals of a plurality of primary colors.
Claim 14
Dependent Claim
138 words
A computer-readable recording medium storing an image display program for adjusting a displayed image by changing a flux of light, the program executable on a computer, the program performing: an expansion function that expands brightness level of image signals of a plurality of primary colors of a displayed image; an image signal transformation function that transforms image signals expanded by the expansion function into color space that includes chromaticity and lightness; a prediction function that predicts chromaticity of the color space when the flux of light is changed; a correction function that corrects an original chromaticity in the color space in accordance with a prediction made by the prediction function; and a color space transformation function that transforms color space that includes a chromaticity corrected by the correction function into image signals of a plurality of primary colors.
Claim 15
Dependent Claim
100 words
The computer readable recording medium according to claim 11 , the program further performing: a detection function that detects a flux of light displayed at a time when a display is darkest, wherein the correction function makes a correction based on the detected flux of displayed light, and the expansion function makes an expansion based on predetermined expansion coefficients; and wherein the prediction function predicts the chromaticity based on offset values, at least one of the expansion coefficients, and a flux of leakage light, and the correction function makes a correction based on a chromaticity predicted by the prediction function.
Claim 16
Dependent Claim
17 words
The computer readable recording medium according to claim 11 , wherein the color space is HSV space.
Claim 17
Dependent Claim
17 words
The computer readable recording medium according to claim 11 , wherein the color space is Yuv space.
References Cited (Backward Citations)
JPH0364192A
Cited
US5247366A
Cited
US5717422A
Cited
US6816141B1
Cited
US6344900B1
Cited
US5959696A
Cited
JP2000224607A
Cited
JP2000316172A
Cited
JP2001125557A
Cited
JP2002051353A
Cited
US20020057238A1
Cited
JP2002132225A
Cited
US20020154693A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-08-07 | 2010-02-06 | 2010-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-08-07 | 2014-02-06 | 2014-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-08-07 | 2018-02-06 | 2018-08-08 | $7700.00 | Window Closed / Lapsed |