US6164847A
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Imaging parameter detection
Assignee: Agfa Corp
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Filing: 1999-09-09
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Granted: 2000-12-26
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Expires: 2019-09-09
Abstract
Abstract A system and method for detecting imaging parameters includes forming a first image generated with pseudorandom noise and a second image generated with the same pseudorandom noise that serve as an imaging parameter sensor when the first and second images are superimposed. The sensor is useful for visually detecting such imaging parameters such as geometric errors. In one embodiment, the first and second patterns are generated with pseudorandom noise by modulating a repetitive pattern with pseudorandom noise. In another embodiment, the first and second patterns are generated with pseudorandom noise by forming a pseudorandom image and the reverse of the image, and phase shifting one or both of the images.
Inventors
- 👤 Roy D. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:13
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/0002; G06T7/0004; G06T5/00; G06T5/50; G06T2207/00; G06T2207/30; G06T2207/30108; G06T2207/30144
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
64 words
A method for visibly detecting an imaging parameter by superimposing two images, comprising the steps of: (a) forming a first image generated using pseudorandom noise; and (b) forming a second image generated using the same pseudorandom noise, the first and second images forming a third image that visibly displays the state of an imaging parameter when the first image and second image are superimposed.
Claim 2
Independent Claim
64 words
A method for visibly detecting an imaging parameter by superimposing two images, comprising the steps of: (a) forming a first image generated using pseudorandom noise; and (b) forming a second image generated using the same pseudorandom noise, the first and second images forming a third image that visibly displays the state of an imaging parameter when the first image and second image are superimposed.
Claim 3
Dependent Claim
16 words
The method of claim 1, wherein step (a) comprises forming the first image in a memory.
Claim 4
Dependent Claim
21 words
The method of claim 1, wherein step (a) comprises forming the first image on a media by imaging on the media.
Claim 5
Dependent Claim
16 words
The method of claim 1, wherein step (b) comprises forming the second image in a memory.
Claim 6
Dependent Claim
21 words
The method of claim 1, wherein step (b) comprises forming the second image on a media by imaging on the media.
Claim 7
Dependent Claim
24 words
The method of claim 1, further comprising the step of: (c) superimposing the first image and the second image, thereby displaying the third image.
Claim 8
Dependent Claim
50 words
The method of claim 6 wherein step (c) comprises the steps of: (i) imaging one of the first and second images on a transparent first media; (ii) imaging the other of the first and second images on a second media; and (iii) overlaying the first media on the second media.
Claim 9
Dependent Claim
43 words
The method claim 1 wherein step (a) comprises forming the first image on a media, step (b) comprises forming the second image on the same media overlaid on the first image, thereby superimposing the first image and the second image on the media.
Claim 10
Dependent Claim
63 words
The method of claim 1 wherein step (a) comprises forming the first image in a memory, step (b) comprises forming the second image on a media, and further comprising the steps of: (c) detecting the second image formed on the media; and (d) combining the first image and detected second image in memory, thereby superimposing the first image and second image in memory.
Claim 11
Dependent Claim
63 words
The method of claim 1 wherein step (a) comprises forming the first image on a media, step (b) comprises forming the second image in a memory, and further comprising the steps of: (c) detecting the first image formed on the media; and (d) combining the first image and detected second image in memory, thereby superimposing the first image and second image in memory.
Claim 12
Dependent Claim
18 words
The method of claim 1 wherein the state of the imaging parameter comprises an amount of geometric error.
Claim 13
Dependent Claim
47 words
The method of claim 11 wherein the state of the imaging parameter comprises an amount at least one geometric error chosen from the set of registration error, magnification, straightness, orthogonality, length measurement, media stretch, media shrinkage, focus measurement, spot size distortion, spot shape distortion, banding, and linearity.
Claim 14
Dependent Claim
18 words
The method of claim 1 wherein the state of the imaging parameter comprises an amount of registration error.
Claim 15
Dependent Claim
41 words
The method of claim 1, wherein: step (a) comprises forming a first image comprising a first repetitive pattern modulated with pseudorandom noise; and step (b) comprises forming a second image comprising a second repetitive pattern modulated with the same pseudorandom noise.
Claim 16
Dependent Claim
25 words
The method of claim 14 wherein: step (a) comprises forming a first image comprising a first repetitive pattern modulated with a uniform pseudorandom noise distribution.
Claim 17
Dependent Claim
25 words
The method of claim 14 wherein: step (a) comprises forming a first image comprising a first repetitive pattern modulated with a gaussian pseudorandom noise distribution.
Claim 18
Dependent Claim
33 words
The method of claim 1, wherein: step (a) comprises forming a first pseudorandom image; and step (b) comprises: (i) deriving a second image from the first image; and (ii) forming the second image.
Claim 19
Dependent Claim
69 words
The method of claim 17 wherein step (b)(i) comprises, for each of at least one cells in the second image, the steps of: (A) forming a reverse image of the corresponding cell in the first image; and (B) phase shifting one or both of: (1) at least a portion of the cell in the second image; (2) at least a portion of the corresponding cell in the first image.
Claim 20
Dependent Claim
20 words
The method of claim 18 wherein (b)(i)(B) comprises phase shifting by the amount of imaging parameter state designated for display.
Claim 21
Dependent Claim
22 words
The method of claim 19 wherein step (b)(i)(B) comprises phase shifting a different amount in the X axis and the Y axis.
Claim 22
Dependent Claim
31 words
The method of claim 17 wherein the number of superimposed components is greater in one of the X and Y direction than in the other of the X and Y direction.
Claim 23
Dependent Claim
22 words
The method of claim 17 wherein the mean pitch of the image is different in the X direction and the Y direction.
Claim 24
Dependent Claim
19 words
The method of claim 17 wherein the coarseness of the image is different in the X and Y directions.
Claim 25
Dependent Claim
31 words
The method of claim 18 further comprising, after step A, the steps of: identifying a grouping of on pixels or a grouping of off pixels; and enlarging the identified pixel grouping.
Claim 26
Independent Claim
78 words
A system for displaying an imaging parameter, comprising: a print device configured to form images on media; a controller in communication with said print device the controller controlling said print device to form a first image generated with pseudorandom noise and to form a second image generated with pseudorandom noise, the first and second images forming a third image that visibly displays the state of an imaging parameter when the first image and the second image are superimposed.
Claim 27
Independent Claim
78 words
A system for displaying an imaging parameter, comprising: a print device configured to form images on media; a controller in communication with said print device the controller controlling said print device to form a first image generated with pseudorandom noise and to form a second image generated with pseudorandom noise, the first and second images forming a third image that visibly displays the state of an imaging parameter when the first image and the second image are superimposed.
Claim 28
Dependent Claim
33 words
The system of claim 25, wherein the controller is operable to form the first image on a media and to form the second image overlayed on the first image on the same media.
Claim 29
Dependent Claim
31 words
The system of claim 26, wherein the controller is operable to form the first image on a first media and the second image in a corresponding location on a second media.
Claim 30
Dependent Claim
108 words
The system of claim 25 further comprising a memory device configured to store images; and an image detector to detect images formed on media; wherein the controller is operable to form one of the first and second images in the memory device, and to drive said print device to form the other of said first and second images on a media; said wherein said controller is operable to drive said image detector to detect said other of said first and second images on said media, and to combine in memory the one of the first and second images and the detected other of the first and second images.
Claim 31
Independent Claim
12 words
The system of 25 wherein said imaging parameter comprises a geometric error.
Claim 32
Independent Claim
12 words
The system of 25 wherein said imaging parameter comprises a geometric error.
Claim 33
Independent Claim
41 words
The system of 25 wherein said imaging parameter comprises at least one geometric error chosen from the set of registration error, magnification, straightness, orthogonality, length measurement, media stretch, media shrinkage, focus measurement, spot size distortion, spot shape distortion, banding, and linearity.
Claim 34
Independent Claim
41 words
The system of 25 wherein said imaging parameter comprises at least one geometric error chosen from the set of registration error, magnification, straightness, orthogonality, length measurement, media stretch, media shrinkage, focus measurement, spot size distortion, spot shape distortion, banding, and linearity.
Claim 35
Dependent Claim
44 words
The system of claim 25, wherein the controller is operable to drive the print device to form a first image comprising a first repetitive pattern modulated with pseudorandom noise and to form a second image comprising a second repetitive pattern modulated with pseudorandom noise.
Claim 36
Dependent Claim
33 words
The system of claim 25, wherein the controller is operable to drive said print device to form a first pseudorandom image, and to form a second image derived from the first pseudorandom image.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-26 | 2004-06-26 | 2004-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-26 | 2008-06-26 | 2008-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-26 | 2012-06-26 | 2012-12-26 | $7700.00 | Window Closed / Lapsed |