EP1178672A2
Expired / Lapsed
EP
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Environment-compliant image display and information storage medium
Assignee: Seiko Epson Corp
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Filing: 2001-07-31
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Granted: —
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Expires: 2021-07-31
Abstract
Abstract To provide an environment-compliant image display system and information storage medium, there is provided a color control processing update section which corrects colors by adjusting a LUT in a 3D-LUT storage section and corrects brightness by adjusting γ values in a 1D-LUT storage section, to increase an output value in at least a lower grayscale range when the environment is affected by ambient light, based on environmental information that has been obtained by a colored-light sensor.
Inventors
- 👤 Hideki Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:54
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; G; G09; G09G; G09G5/00; G09G5/02; G09G5/06; H04N1/4072; H04N1/4074; H04N5/00; H04N5/44; H04N5/57; H04N5/58; H04N9/00; H04N9/64; H04N9/73; G09G2320/00; G09G2320/06; G09G2320/0626; G09G2320/0666; G09G2360/00; G09G2360/14; G09G2360/144; H04N5/74
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
87 words
An environment-compliant image display system which
corrects an image, based on environmental information that
expresses visual environment in an area in which the image is
displayed, and displays the image; the image display system
comprising: correction means which corrects input-output
characteristic data for display that is used by a means for
displaying the image, the correction being in such a manner as
to increase an output value in at least a lower grayscale range
when the environment is affected by ambient light, based on the
environmental information.
Claim 2
Dependent Claim
42 words
The image display system as defined in claim 1, wherein the correction means corrects the input-output
characteristic data by performing a predetermined calculation
using parameters that differ between a lower grayscale range
and a grayscale range other than the lower grayscale range.
Claim 3
Dependent Claim
51 words
The image display system as defined in claim 1 or 2, wherein the correction means corrects the input-output
characteristic data by performing a predetermined calculation
based on a difference between a brightness value for actual
environment which is comprised within the environmental
information, and a brightness value for an ideal environment.
Claim 4
Dependent Claim
33 words
The image display system as defined in any one of claims
1 to 3, wherein the correction means performs gamma correction
as at least part of the correction of the input-output
characteristic data.
Claim 5
Dependent Claim
62 words
The image display system as defined in any one of claims
1 to 4, wherein the correction means corrects color modification
information that is stored in a predetermined storing region,
in such a manner that a color temperature of the image to be
displayed is adjusted, based on a brightness value for the
actual environment that is comprised within the environmental
information.
Claim 6
Dependent Claim
19 words
The image display system as defined in claim 5, wherein the color modification information is a
three-dimensional look-up table.
Claim 7
Dependent Claim
96 words
An information storage medium including a program for
correcting an image based on environmental information that
expresses visual environment in an area in which the image is
displayed, and displaying the image, the information storage
medium comprising a program for implementing in a computer: correction means for correcting input-output
characteristic data for display that is used by a means for
displaying the image, the correction being in such a manner as
to increase an output value in at least a lower grayscale range
when the environment is affected by ambient light, based on the
environmental information.
Claim 8
Dependent Claim
42 words
The information storage medium as defined in claim 7, wherein the correction means corrects the input-output
characteristic data by performing a predetermined calculation
using parameters that differ between a lower grayscale range
and a grayscale range other than the lower grayscale range.
Claim 9
Dependent Claim
51 words
The information storage medium as defined in claim 7 or
8, wherein the correction means corrects the input-output
characteristic data by performing a predetermined calculation
based on a difference between a brightness value for actual
environment which is comprised within the environmental
information, and a brightness value for an ideal environment.
Claim 10
Dependent Claim
33 words
The information storage medium as defined in any one of
claims 7 to 9, wherein the correction means performs gamma correction
as at least part of the correction of the input-output
characteristic data.
Claim 11
Dependent Claim
62 words
The information storage medium as defined in any one of
claims 7 to 10, wherein the correction means corrects color modification
information that is stored in a predetermined storing region,
in such a manner that a color temperature of the image to be
displayed is adjusted, based on a brightness value for the
actual environment that is comprised within the environmental
information.
Claim 12
Dependent Claim
19 words
The information storage medium as defined in claim 11, wherein the color modification information is a
three-dimensional look-up table.
References Cited (Backward Citations)
No citation records indexed.
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