Patent EP0597797A1 successfully refreshed from Google Patents.
EP0597797A1
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EP
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Method and apparatus for creating and displaying faithful color images on a computer display
Assignee: International Business Machines Corp
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Filing: 1993-10-19
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Granted: —
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Expires: 2013-10-19
Abstract
Abstract Faithful color images are created in an efficient manner for display on a specific computer display. A standard computer system generates a palette calibration table, based on information about a standard display. The standard computer system then creates a device independent image from the palette calibration table and from an original image. The palette calibration table and device independent image are then transmitted to a specific computer system. The specific computer system receives the palette calibration table and device independent image from the standard computer system. It calculates a display specific palette from the palette calibration table and from information about the specific display. The specific computer system then generates the faithful color image for display by sending the device independent image and the display specific palette to the display adapter in the specific computer system.
Inventors
- 👤 Gordon Wesley Braudaway
- 👤 Helen Roxlo Delp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 12:40
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G09; G09G; G09G5/00; G09G5/02; G09G5/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
88 words
A method for displaying a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: receiving a palette calibration table from a standard computer system; receiving a display independent image from a standard computer system; calculating a display specific palette from said palette calibration table and from information about said specific computer display; generating said faithful color image from said display specific palette and from said display independent image; and displaying said faithful color image on said specific computer display.
Claim 2
Dependent Claim
59 words
The method of claim 1, wherein said calculating step further comprises the steps of: determining an XYZ-RGB transformation matrix M for said specific display; computing RGB tristimulus values for said specific display from said XYZ-RGB transformation matrix M and said palette calibration table; and transforming said RGB values using a normalized luminance table to obtain said display specific palette.
Claim 3
Dependent Claim
52 words
The method of claim 2, wherein said normalized luminance table used by said transforming step further comprises the steps of: measuring luminance tristimulus values Y for said specific display; normalizing said luminance tristimulus values Y; and computing said normalized luminance table from said luminance tristimulus values Y normalized in said normalizing step.
Claim 4
Dependent Claim
52 words
The method of claim 1, wherein said generating step further comprises the steps of: sending said display specific palette to a display adapter in said specific computer system; sending said display independent image to said display adapter; and combining said display specific palette and said display independent image in said display adapter.
Claim 5
Independent Claim
87 words
A method in a standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: generating a palette calibration table from information about a standard display; creating a display independent image from said palette calibration table and from an original image; transmitting said palette calibration table to said specific computer display via a communications path; and transmitting said display independent image to said specific computer display via a communications path.
Claim 6
Dependent Claim
41 words
The method of claim 5, wherein said generating step further comprises the steps of: determining CIE XYZ* values from said standard display; obtaining a standard palette; and generating said palette calibration table from said CIE XYZ* values and said standard palette.
Claim 7
Dependent Claim
57 words
The method of claim 5, wherein said generating step further comprises the steps of: determining CIE XYZ* values from said group of displays; averaging said CIE XYZ* values determined in said determining step; obtaining a standard palette; and generating said palette calibration table from said CIE XYZ* values averaged in said averaging step and said standard palette.
Claim 8
Dependent Claim
70 words
The method of claim 5, wherein said creating step further comprises the steps of: determining a XYZ-RGB matrix M* for said standard display; creating a display independent palette table from said XYZ-RGB matrix M* and said palette calibration table; creating an RGB image from said original image; obtaining a standard palette; and creating said display independent image from said RGB image, said standard palette, and said display independent palette table.
Claim 9
Independent Claim
76 words
A method in a standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: generating a palette calibration table from information about a standard display; creating a display independent image from said calibration table and from an original image; storing said palette calibration table on a transportable media; and storing said display independent image on a transportable media.
Claim 10
Independent Claim
160 words
A method in a standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: in said standard computer system, generating a palette calibration table from information about a standard display; creating a display independent image from said calibration table and from an original image; transmitting said palette calibration table to said specific computer display via a communications path; transmitting said display independent image to said specific computer display via a communications path; in said specific computer system, receiving a palette calibration table from a standard computer system; receiving a display independent image from a standard computer system; calculating a display specific palette from said palette calibration table and from information about said specific computer display; generating said faithful color image from said display specific palette and from said display independent image; and displaying said faithful color image on said specific computer display.
Claim 11
Dependent Claim
51 words
A transportable storage media having information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising: a palette calibration table generated from information about a standard display; and a display independent image created from said calibration table and from an original image.
Claim 12
Dependent Claim
96 words
A specific computer system having a specific computer display, said specific computer display capable of displaying a faithful color image, comprising: means for receiving a palette calibration table from a standard computer system; means for receiving a display independent image from a standard computer system; means for calculating a display specific palette from said palette calibration table and from information about said specific computer display; means for generating said faithful color image from said display specific palette and from said display independent image; and means for displaying said faithful color image on said specific computer display.
Claim 13
Dependent Claim
93 words
A standard computer system capable of creating information used to display a faithful color image on a specific computer display connected to a specific computer system, said standard computer system comprising: means for generating a palette calibration table from information about a standard display; means for creating a display independent image from said calibration table and from an original image; means for transmitting said palette calibration table to said specific computer display via a communications path; and means for transmitting said display independent image to said specific computer display via a communications path.
Claim 14
Dependent Claim
172 words
A standard computer system capable of creating information used to display a faithful color image on a specific computer display connected to a specific computer system, said standard computer system comprising: means for generating a palette calibration table from information about a standard display; means for creating a display independent image from said calibration table and from an original image; means for transmitting said palette calibration table to said specific computer display via a communications path; means for transmitting said display independent image to said specific computer display via a communications path, said specific computer system comprising: means for receiving a palette calibration table from a standard computer system; means for receiving a display independent image from a standard computer system; means for calculating a display specific palette from said palette calibration table and from information about said specific computer display; means for generating said faithful color image from said display specific palette and from said display independent image; and means for displaying said faithful color image on said specific computer display.
Claim 15
Independent Claim
74 words
A method in a first standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: receiving a palette calibration table from a second standard computer system; creating a display independent image from said palette calibration table and from an original image; and transmitting said display independent image to said specific computer display via a communications path.
Claim 16
Independent Claim
69 words
A method in a first standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: receiving a palette calibration table from a second standard computer system; creating a display independent image from said palette calibration table and from an original image; and storing said display independent image on a transportable media.
Claim 17
Independent Claim
89 words
A method in a standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: creating a display independent image from information about a standard display and from an original image; generating a palette calibration table from said information about a standard display; transmitting said palette calibration table to said specific computer display via a communications path, and transmitting said display independent image to said specific computer display via a communications path.
Claim 18
Independent Claim
75 words
A method in a first standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: creating a display independent image from information about a standard display and from an original image; receiving a palette calibration table from a second standard computer system; and transmitting said display independent image to said specific computer display via a communications path.
Claim 19
Independent Claim
70 words
A method in a first standard computer system for creating information used to display a faithful color image on a specific computer display connected to a specific computer system, comprising the steps of: creating a display independent image from information about a standard display and from an original image; receiving a palette calibration table from a second standard computer system; and storing said display independent image on a transportable media.
References Cited (Backward Citations)
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