Patent US1896975A successfully refreshed from Google Patents.
US6104841A
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US
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Method and apparatus for reading and processing an image at a rate determined by the magnification to be applied to the image
Assignee: Fujifilm Holdings Corp
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Filing: 1995-11-29
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Granted: 2000-08-15
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Expires: 2015-11-29
Abstract
Abstract An image is read by moving a line sensor relative to the image in a subsidiary scanning direction perpendicular to the direction of a pixels array of the line sensor. An image processor receives image signals from the sensor and produces an output image magnified relative to the image in accordance with a magnification ratio. The magnification ratio falls into one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio. The moving speed of the sensor relative to the image is set as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a highest magnification ratio in the magnification ratio range.
Inventors
- 👤 Yu Tojo
- 👤 Takahiro Hideshima
- 👤 Akira Ichizuka
- 👤 Kazuteru Kowada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:33
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387; H04N1/393; G; G06; G06T; G06T3/00; G06T3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
257 words
A method of reading and processing an image by a sensor, said sensor comprising at least a line of detectors disposed in a first direction for detection lines of pixels of the image, said sensor moving relative to the image in a second direction perpendicular to the first direction and reading the image and providing image processor that produces an output image, the method comprising the steps of: setting a magnification ratio of the output image to the image, the magnification ratio being in one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio; setting a moving speed of the sensor relative to the image as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a highest magnification ratio in the magnification ratio range; and reading and processing only one of every i lines of pixels of the image when the magnification ratio is in the magnification ratio range i, for i=1 to n.
Claim 2
Independent Claim
257 words
A method of reading and processing an image by a sensor, said sensor comprising at least a line of detectors disposed in a first direction for detection lines of pixels of the image, said sensor moving relative to the image in a second direction perpendicular to the first direction and reading the image and providing image processor that produces an output image, the method comprising the steps of: setting a magnification ratio of the output image to the image, the magnification ratio being in one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio; setting a moving speed of the sensor relative to the image as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a highest magnification ratio in the magnification ratio range; and reading and processing only one of every i lines of pixels of the image when the magnification ratio is in the magnification ratio range i, for i=1 to n.
Claim 3
Dependent Claim
21 words
The method according to claim 1, wherein a size of said pixels increases as the moving speed of the sensor increases.
Claim 4
Dependent Claim
52 words
The method according to claim 1, further comprising the steps of: detecting a black frame around the image; determining an inclination angle of a side of the black frame relative to said first direction; and rotating said sensor such that said side of the black frame is parallel to the first direction.
Claim 5
Independent Claim
259 words
An apparatus for reading and processing an image, comprising: a sensor which reads the image said sensor comprising at least a line of detectors disposed in a first direction for detecting lines of pixels of the image, said sensor moving relative to the image in a second direction perpendicular to the first direction; and an image processor receiving image signals from said sensor and producing an output image magnified relative to the image in accordance with a magnification ratio, the magnification ratio being in one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio, wherein said sensor moves at a moving speed relative to the image as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a high magnification ratio in the magnification ratio range; and wherein said sensor reads only one of every i lines of pixels of the image when the magnification ratio is in the magnification ratio range i, for i=1 to n.
Claim 6
Independent Claim
259 words
An apparatus for reading and processing an image, comprising: a sensor which reads the image said sensor comprising at least a line of detectors disposed in a first direction for detecting lines of pixels of the image, said sensor moving relative to the image in a second direction perpendicular to the first direction; and an image processor receiving image signals from said sensor and producing an output image magnified relative to the image in accordance with a magnification ratio, the magnification ratio being in one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio, wherein said sensor moves at a moving speed relative to the image as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases, in inverse proportion to an increase in the magnification ratio, from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a high magnification ratio in the magnification ratio range; and wherein said sensor reads only one of every i lines of pixels of the image when the magnification ratio is in the magnification ratio range i, for i=1 to n.
Claim 7
Dependent Claim
21 words
The apparatus according to claim 4, wherein a size of said pixels increases as the moving speed of said sensor increases.
Claim 8
Dependent Claim
68 words
The apparatus according to claim 4, further comprising: a black frame detector receiving image signals from said sensor and detecting a black frame around the image; an inclination detector for determining an inclination angle of a side of the black frame relative to said first direction; and an inclination corrector for rotating said sensor such that said side of the black frame is parallel to he first direction.
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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) | 2003-08-15 | 2004-02-14 | 2004-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-15 | 2008-02-14 | 2008-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-15 | 2012-02-14 | 2012-08-15 | $7700.00 | Window Closed / Lapsed |