Patent US6407829B1 successfully refreshed from Google Patents.
US6407829B1
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Image reading apparatus
Assignee: Fujifilm Corp
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Filing: 1999-01-27
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Granted: 2002-06-18
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Expires: 2019-01-27
Abstract
Abstract There is provided an image reading apparatus wherein prior to fine scan of an original image using a line CCD sensor at high resolution, a single prescan at low resolution is performed on the scanning lines of the original image using at least two different storage times of the line CCD sensor, in order to determine the reading conditions for the fine scan at the high resolution and the conditions for correction the fine scanned image date. Irrespective of the density of a particular frame image, a single prescan suffices for detecting maximum and minimum densities as well as high-density and medium-to low density image data of appropriate precision in an appropriate and positive way. Then, image information for acquiring not only optimal reading conditions for fine scan that are associated with the density and other characteristics of the original image, but also the conditions as for correcting the captured image data processing conditions can be obtained.
Inventors
- 👤 Hiroaki Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:21
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00795; H04N1/00798; H04N1/00819; H04N1/40; H04N1/407; H04N1/4072; H04N1/04; H04N1/10; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0404; H04N2201/0408; H04N2201/0416
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
119 words
An image reading apparatus in which an original image undergoing movement relative to said apparatus is read by photoelectric scan with a single line CCD sensor having a single array of CCD elements in a direction perpendicular to said relative movement of said original image, wherein prior to a fine scan of said original image by said single line CCD sensor at a high resolution, said single line CCD sensor performs a single prescan at a low resolution on the scanning lines of said original image by using at least two different storage times, in order to determine the reading conditions for the fine scan at high resolution, and the correcting conditions for correcting the fine scanned image data.
Claim 2
Dependent Claim
119 words
An image reading apparatus in which an original image undergoing movement relative to said apparatus is read by photoelectric scan with a single line CCD sensor having a single array of CCD elements in a direction perpendicular to said relative movement of said original image, wherein prior to a fine scan of said original image by said single line CCD sensor at a high resolution, said single line CCD sensor performs a single prescan at a low resolution on the scanning lines of said original image by using at least two different storage times, in order to determine the reading conditions for the fine scan at high resolution, and the correcting conditions for correcting the fine scanned image data.
Claim 3
Dependent Claim
28 words
The image reading apparatus according to claim 1 , wherein a storage time of said single line CCD sensor varies between odd-numbered scanning lines and even-numbered scanning lines.
Claim 4
Dependent Claim
28 words
The image reading apparatus according to claim 1 , wherein a number of prescan scanning lines using said different storage times is dependent on the particular storage time.
Claim 5
Dependent Claim
30 words
The image reading apparatus according to claim 1 , wherein said different storage times include at least a standard storage time and a high-density image bearing original compatible storage time.
Claim 6
Dependent Claim
30 words
The image reading apparatus according to claim 1 , wherein at least one kind of image data read by prescan using said different storage times is displayed on a monitor.
Claim 7
Dependent Claim
30 words
The image reading apparatus according to claim 1 , wherein at least one kind of image data read by prescan using said different storage times is used for setup calculations.
Claim 8
Dependent Claim
115 words
A line CCD sensor used in an image reading apparatus for photo-electrically reading an original image, comprising a single array of CCD elements arranged perpendicular to the relative direction of movement of the original image, wherein the line CCD sensor is a single CCD sensor provided in said image reading apparatus, the line CCD sensor configured to perform a first and second scan of the original image, and wherein the first scan is a single scan that is performed at low resolution on scanning lines of the original image prior to performing the second scan at a higher resolution, the line CCD sensor performing the first scan by using at least two different storage times.
Claim 9
Dependent Claim
115 words
A line CCD sensor used in an image reading apparatus for photo-electrically reading an original image, comprising a single array of CCD elements arranged perpendicular to the relative direction of movement of the original image, wherein the line CCD sensor is a single CCD sensor provided in said image reading apparatus, the line CCD sensor configured to perform a first and second scan of the original image, and wherein the first scan is a single scan that is performed at low resolution on scanning lines of the original image prior to performing the second scan at a higher resolution, the line CCD sensor performing the first scan by using at least two different storage times.
Claim 10
Dependent Claim
41 words
The line CCD sensor according to claim 7 , wherein said first scan is performed at different storage times to determine the reading conditions for the second scan, as well as for determining any corrections necessary for second scan image data.
Claim 11
Dependent Claim
18 words
The line CCD sensor according to claim 7 , wherein storage times vary between odd-numbered and even-numbered scanning-lines.
Claim 12
Dependent Claim
30 words
The line CCD sensor according to claim 7 , wherein a number of scanning lines that are to be scanned in the first scan depend on a particular storage time.
Claim 13
Dependent Claim
27 words
The line CCD sensor according to claim 7 , wherein image data that was read by the first scan is either displayed or used for setup calculations.
Claim 14
Dependent Claim
28 words
The line CCD sensor according to claim 7 , wherein the at least two different storage times include a standard storage time and a higher density storage time.
Claim 15
Independent Claim
64 words
A method of reading an original image using a single line CCD sensor, comprising the steps of: setting initial prescan conditions, which includes setting at least two different storage times for scanning the original image data; performing the prescan at said different storage times, and thereafter; performing a fine scan of the original image based on reading conditions and corrections determined from the prescan.
Claim 16
Independent Claim
64 words
A method of reading an original image using a single line CCD sensor, comprising the steps of: setting initial prescan conditions, which includes setting at least two different storage times for scanning the original image data; performing the prescan at said different storage times, and thereafter; performing a fine scan of the original image based on reading conditions and corrections determined from the prescan.
Claim 17
Dependent Claim
26 words
The method according to claim 13 , wherein prescan is performed at different storage times for scanning even-numbered and odd-numbered scanning lines of the original image.
Claim 18
Dependent Claim
35 words
The method according to claim 14 , wherein a high density compatible storage time is used for scanning the even-numbered scanning lines, and a standard storage time is used for scanning the odd-numbered scanning lines.
Claim 19
Dependent Claim
34 words
The method according to claim 15 , wherein the storage time used for scanning either even-numbered or odd-numbered scanning lines is a function of the maximum image density of said read original image data.
Claim 20
Dependent Claim
126 words
An image reading apparatus in which an original image undergoing movement relative to said apparatus is read by photoelectric scan with a single line CCD sensor having a single array of CCD elements in a direction perpendicular to said relative movement of said original image, wherein, prior to a fine scan of said original image by said single line CCD sensor at a high resolution, said single line CCD sensor performing a single prescan at a low resolution on a scanning line of said original image by using at least two different storage times, said single line CCD sensor including a unit for determining said reading condition for the fine scan at a high resolution under said correcting condition for correcting the fine scanned image data.
Claim 21
Dependent Claim
126 words
An image reading apparatus in which an original image undergoing movement relative to said apparatus is read by photoelectric scan with a single line CCD sensor having a single array of CCD elements in a direction perpendicular to said relative movement of said original image, wherein, prior to a fine scan of said original image by said single line CCD sensor at a high resolution, said single line CCD sensor performing a single prescan at a low resolution on a scanning line of said original image by using at least two different storage times, said single line CCD sensor including a unit for determining said reading condition for the fine scan at a high resolution under said correcting condition for correcting the fine scanned image data.
Claim 22
Dependent Claim
29 words
The image reading apparatus according to claim 17 , wherein a storage time of said single line CCD sensor varies between odd-numbered scanning lines and even numbered scanning lines.
Claim 23
Dependent Claim
28 words
The image reading apparatus according to claim 18 , wherein a number of prescan scanning lines using said different storage times is dependent on a particular storage time.
Claim 24
Dependent Claim
30 words
The image reading apparatus according to claim 17 , wherein said different storage times include at least a standard storage time and a high-density image bearing original compatible storage time.
Claim 25
Dependent Claim
30 words
The image reading apparatus according to claim 17 , wherein at least one kind of image data read by prescan using said different storage times is displayed on a monitor.
Claim 26
Dependent Claim
30 words
The image reading apparatus according to claim 17 , wherein at least one kind of image data read by prescan using said different storage times is used for setup calculations.
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) | 2005-06-17 | 2005-12-17 | 2006-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-17 | 2009-12-17 | 2010-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-17 | 2013-12-17 | 2014-06-18 | $7700.00 | Window Closed / Lapsed |