US5465121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for compensating for image distortion caused by off-axis image projection
Assignee: International Business Machines Corp
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Filing: 1993-03-31
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Granted: 1995-11-07
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Expires: 2013-03-31
Abstract
Abstract A method and system in a data processing system for modifying an image source data file to compensate for distortions resulting from a projection of an image source onto a surface that is not perpendicular to an image source projection system. A data processing system image source data file is identified and a test pattern is displayed utilizing a data processing system visual output device. A user is permitted to enter a distortion compensation factor, the displayed test pattern is modified utilizing the distortion compensation factor. Once a final distortion compensation factor is selected in response to the appearance of the modified test pattern, the data processing system image source data file is modified, utilizing the selected distortion compensation factor, thereby enhancing the projection of an image source onto a surface that is not perpendicular to an image source projection system.
Inventors
- 👤 James L. Blalock, deceased
- 👤 William R. Sterrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:59
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/23; H04N3/233; H04N3/2335; H04N9/00; H04N9/12; H04N9/31; H04N9/3179; H04N9/3185
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
102 words
A method in a data processing system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said method comprising the steps of: identifying a data processing system image source data file; displaying a test pattern utilizing a data processing system visual output device; modifying said test pattern utilizing a distortion compensation factor; and modifying said data processing system image source data file utilizing said distortion compensation factor, wherein a subsequent projection of said source image is compensated for distortion.
Claim 2
Independent Claim
102 words
A method in a data processing system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said method comprising the steps of: identifying a data processing system image source data file; displaying a test pattern utilizing a data processing system visual output device; modifying said test pattern utilizing a distortion compensation factor; and modifying said data processing system image source data file utilizing said distortion compensation factor, wherein a subsequent projection of said source image is compensated for distortion.
Claim 3
Dependent Claim
32 words
The method in a data processing system for modifying an image source data file according to claim 1, further including the step of prompting a user to enter said distortion compensation factor.
Claim 4
Dependent Claim
43 words
The method in a data processing system for modifying an image source data file according to claim 1, further including the step of permitting a user to determine a final distortion compensation factor in response to the appearance of said modified test pattern.
Claim 5
Dependent Claim
33 words
The method in a data processing system for modifying an image source data file according to claim 1, further including the step of outputting said modified data processing system image source data file.
Claim 6
Dependent Claim
47 words
The method in a data processing system for modifying an image source data file according to claim 4, wherein the step of outputting said modified data processing system image source data file further comprises the step of printing said modified data processing system image source data file.
Claim 7
Dependent Claim
47 words
The method in a data processing system for modifying an image source data file according to claim 4, wherein the step of outputting said modified data processing system image source data file further comprises the step of displaying said modified data processing system image source data file.
Claim 8
Independent Claim
102 words
A system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said system comprising: means for identifying a data processing system image source data file; means for displaying a test pattern utilizing a data processing system visual output device; means for modifying said test pattern utilizing a distortion compensation factor; and means for modifying said data processing system image source data file utilizing said distortion compensation factor, wherein a subsequent projection of said source image is compensated for distortion.
Claim 9
Independent Claim
102 words
A system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said system comprising: means for identifying a data processing system image source data file; means for displaying a test pattern utilizing a data processing system visual output device; means for modifying said test pattern utilizing a distortion compensation factor; and means for modifying said data processing system image source data file utilizing said distortion compensation factor, wherein a subsequent projection of said source image is compensated for distortion.
Claim 10
Dependent Claim
26 words
The system for modifying an image source data file according to claim 7, further including means for prompting a user to enter said distortion compensation factor.
Claim 11
Dependent Claim
37 words
The system for modifying an image source data file according to claim 7, further including means for permitting a user to determine a final distortion compensation factor in response to the appearance of said modified test pattern.
Claim 12
Dependent Claim
27 words
The system for modifying an image source data file according to claim 7, further including means for outputting said modified data processing system image source data file.
Claim 13
Dependent Claim
41 words
The system for modifying an image source data file according to claim 10, wherein said means for outputting said modified data processing system image source data file further comprises means for printing said modified data processing system image source data file.
Claim 14
Dependent Claim
41 words
The system for modifying an image source data file according to claim 10, wherein said means for outputting said modified data processing system image source data file further comprises means for displaying said modified data processing system image source data file.
Claim 15
Independent Claim
121 words
A method in a data processing system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said method comprising the steps of: identifying a data processing system image source data file; storing a distortion compensation factor, associated with a predetermined set of presentation parameters, within said data processing system image source data file; and automatically modifying said data processing system image source data file utilizing said distortion compensation factor in response to a presentation of said image source data file utilizing said set of presentation parameters, wherein a subsequent projection of said source image is compensated for distortion.
Claim 16
Independent Claim
121 words
A method in a data processing system for modifying an image source data file to compensate for distortions resulting from a projection of a source image onto a surface that is not perpendicular to a source image projection system, said method comprising the steps of: identifying a data processing system image source data file; storing a distortion compensation factor, associated with a predetermined set of presentation parameters, within said data processing system image source data file; and automatically modifying said data processing system image source data file utilizing said distortion compensation factor in response to a presentation of said image source data file utilizing said set of presentation parameters, wherein a subsequent projection of said source image is compensated for distortion.
Claim 17
Dependent Claim
69 words
A method in a data processing system for modifying an image source data file according to claim 13, wherein the step of storing a distortion compensation factor associated with a predetermined set of presentation parameters within said data processing system image source data file further comprises storing multiple distortion compensation factors, each associated with a predetermined set of presentation parameters, within said data processing system image source data file.
Claim 18
Dependent Claim
89 words
A method in a data processing system for modifying an image source data file according to claim 13, wherein the step of automatically modifying said data processing system image source data file utilizing said distortion compensation factor in response to a presentation of said image source data file utilizing said set of presentation parameters further comprises the step of selecting one of said multiple distortion compensation factors in response to a presentation of said image source data file utilizing a selected one of said predetermined sets of presentation parameters.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-06 | 1999-05-08 | 1999-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-06 | 2003-05-08 | 2003-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-06 | 2007-05-08 | 2007-11-07 | $7700.00 | Window Closed / Lapsed |