US4837450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reading a film image with controllable illumination and threshold value
Assignee: Canon Inc
•
Filing: 1988-10-18
•
Granted: 1989-06-06
•
Expires: 2008-10-18
Abstract
Abstract An apparatus for reading a microfilmed image to obtain digital image signal, in which the level of quantizing is determined by measuring the density of image and of background.
Inventors
- 👤 Seiichiro Satomura
- 👤 Masahide Kotera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/403; G; G01; G01N; G01N21/00; G01N21/17; G01N21/59; G01N21/5907; G01N21/5911; G01N2021/5915; G01N2021/5946; G01N2201/00; G01N2201/12; G01N2201/127; G01N2201/12746; G01N2201/12784
Claims Analysis
Total Claims: 101
Claim 1
Independent Claim
121 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the thus detected image density and base density.
Claim 2
Dependent Claim
121 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the thus detected image density and base density.
Claim 3
Dependent Claim
31 words
A film image reading apparatus according to claim 1, wherein said quantizing means is adapted to compare the image signals with the threshold value so as to generate binary image signals.
Claim 4
Dependent Claim
36 words
A film image reading apparatus according to claim 1, wherein said first detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading means.
Claim 5
Dependent Claim
119 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading line by line the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; means for dividing the image signals of each reading line, outputting from said reading means, into plural blocks, each block including a predetermined amount of the image signals; means for detecting a respective peak value of the image signals in each block; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the the detected peak value of each blocks.
Claim 6
Dependent Claim
119 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading line by line the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; means for dividing the image signals of each reading line, outputting from said reading means, into plural blocks, each block including a predetermined amount of the image signals; means for detecting a respective peak value of the image signals in each block; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the the detected peak value of each blocks.
Claim 7
Dependent Claim
31 words
A film image reading apparatus according to claim 4, wherein said determining means is adapted to determine the threshold value on the basis of a frequency of the detected peak values.
Claim 8
Dependent Claim
31 words
A film image reading apparatus according to claim 4, wherein said detecting means is adapted to detect the peak value of image signals corresponding to a predetermined area of the film.
Claim 9
Dependent Claim
100 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; means for detecting an image density of an image corresponding to a predetermined partial area of the film on the basis of the image signals from said reading means; means for quantizing the image signal outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the detected density of an image.
Claim 10
Dependent Claim
100 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; means for detecting an image density of an image corresponding to a predetermined partial area of the film on the basis of the image signals from said reading means; means for quantizing the image signal outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the detected density of an image.
Claim 11
Dependent Claim
31 words
A film image reading apparatus according to claim 7, wherein said quantizing means is adapted to compare the image signals with the threshold value so as to generate binary image signals.
Claim 12
Dependent Claim
36 words
A film image reading apparatus according to claim 7, wherein said detecting means is adapted to detect the image density on the basis of the peak value of the image signal outputted from said reading means.
Claim 13
Dependent Claim
136 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; first detection means for detecting an output value of said reading means in a state where the film is not illuminated by said illuminating means; second detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means in a state where the film is illuminated by said illuminating means; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the thus detected output value and image density.
Claim 14
Dependent Claim
136 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; first detection means for detecting an output value of said reading means in a state where the film is not illuminated by said illuminating means; second detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means in a state where the film is illuminated by said illuminating means; means for quantizing the image signals outputted from said reading means; and means for determining a threshold value for quantizing the image signals on the basis of the thus detected output value and image density.
Claim 15
Dependent Claim
32 words
A film image reading apparatus according to claim 10, wherein said quantizing means is adapted to compare the image signals with the threshold value so as to generate a binary image signal.
Claim 16
Dependent Claim
138 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting a base density of the film on the basis of an output from said reading means when said reading means reads a non-image area of the film illuminated by said illuminating means; and means for determining the amount of light for said illuminating means according to the thus detected base density; and second detection means for detecting an image density of the image based on an output from said reading means when said reading means reads the image recorded on the film illuminated with the thus determined amount of light by said illuminating means.
Claim 17
Dependent Claim
138 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting a base density of the film on the basis of an output from said reading means when said reading means reads a non-image area of the film illuminated by said illuminating means; and means for determining the amount of light for said illuminating means according to the thus detected base density; and second detection means for detecting an image density of the image based on an output from said reading means when said reading means reads the image recorded on the film illuminated with the thus determined amount of light by said illuminating means.
Claim 18
Dependent Claim
36 words
A film image reading apparatus according to claim 12, wherein said second detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading means.
Claim 19
Dependent Claim
109 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; and means for identifying an abnormality in said illuminating means on the basis of the thus detected image density and base density.
Claim 20
Dependent Claim
109 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals from said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; and means for identifying an abnormality in said illuminating means on the basis of the thus detected image density and base density.
Claim 21
Dependent Claim
33 words
A film image reading apparatus according to claim 14, further comprising means for quantizing the image signals from said reading means on the basis of the thus detected image density and base density.
Claim 22
Dependent Claim
35 words
A film image reading apparatus according to claim 14, wherein said first detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading
Claim 23
Dependent Claim
121 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of an output from said reading means; second detection means for detecting a base density of the film on the basis of an output from said reading means; and means for identifying the position of the image on the film on the basis of the thus detected image density and base density, to determine whether the image is proper or not proper for reading.
Claim 24
Dependent Claim
121 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of an output from said reading means; second detection means for detecting a base density of the film on the basis of an output from said reading means; and means for identifying the position of the image on the film on the basis of the thus detected image density and base density, to determine whether the image is proper or not proper for reading.
Claim 25
Dependent Claim
33 words
A film image reading apparatus according to claim 17, further comprising means for quantizing the image signals from said reading means on the basis of the thus detected image density and base density.
Claim 26
Dependent Claim
36 words
A film image reading apparatus according to claim 17, wherein said first detection means is adapted to detects the image density on the basis of a peak value of the image signals from said reading means.
Claim 27
Dependent Claim
33 words
A film image reading apparatus according to claim 1, wherein said first detection means is adapted to detect the image density of an image corresponding to a predetermined partial area of the film.
Claim 28
Dependent Claim
28 words
A film image reading apparatus according to claim 1, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 29
Dependent Claim
24 words
A film image reading apparatus according to claim 1, further comprising means for moving a reading position on the film of said reading means.
Claim 30
Dependent Claim
28 words
A film image reading apparatus according to claim 1, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 31
Dependent Claim
31 words
A film image reading apparatus according to claim 4, wherein said quantizing means is adapted to compare the image signals with the threshold value so as to generate binary image signals.
Claim 32
Dependent Claim
40 words
A film image reading apparatus according to claim 4, further comprising second detecting means for detecting a base density of the film, wherein said determining means is adapted to determine the threshold value in consideration of the detected base density.
Claim 33
Dependent Claim
28 words
A film image reading apparatus according to claim 4, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 34
Dependent Claim
24 words
A film image reading apparatus according to claim 4, further comprising means for moving a reading position of said reading means on the film.
Claim 35
Dependent Claim
28 words
A film image reading apparatus according to claim 4, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 36
Dependent Claim
40 words
A film image reading apparatus according to claim 7, further comprising second detecting means for detecting a base density of the film, wherein said determining means is adapted to determine the threshold value in consideration of the detected base density.
Claim 37
Dependent Claim
28 words
A film image reading apparatus according to claim 7, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 38
Dependent Claim
24 words
A film image reading apparatus according to claim 7 further comprising means for moving a reading position of said reading means on the film.
Claim 39
Dependent Claim
28 words
A film image reading apparatus according to claim 7, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 40
Dependent Claim
33 words
A film image reading apparatus according to claim 7, wherein said first detection means comprise means for extracting the image signals representing the image corresponding to a predetermined partial area of the film.
Claim 41
Dependent Claim
36 words
A film image reading apparatus according to claim 10, wherein said second detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading means.
Claim 42
Dependent Claim
33 words
A film image reading apparatus according to claim 10, wherein said second detection means is adapted to detect the image density of an image corresponding to a predetermined partial area of the film.
Claim 43
Dependent Claim
40 words
A film image reading apparatus according to claim 10, further comprising third detection means for detecting a base density of the film, wherein said determining means is adapted to determine the threshold value in consideration of the detected base density.
Claim 44
Dependent Claim
28 words
A film image reading apparatus according to claim 10, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 45
Dependent Claim
24 words
A film image reading apparatus according to claim 10, further comprising means for moving a reading position of said reading means on the film.
Claim 46
Dependent Claim
28 words
A film image reading apparatus according to claim 10, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 47
Dependent Claim
33 words
A film image reading apparatus according to claim 12, further comprising means for applying an electric power to said illuminating means in order to illuminate the film with the determine amount of light.
Claim 48
Dependent Claim
33 words
A film image reading apparatus according to claim 12, wherein said second detection means is adapted to detect the image density of an image corresponding to a predetermined partial area of the film.
Claim 49
Dependent Claim
47 words
A film image reading apparatus according to claim 12, further comprising means for quantizing the image signals outputted from said reading means and means for determining a threshold value for quantizing the image signals on the basis of the image density detected by said second detection means.
Claim 50
Dependent Claim
28 words
A film image reading apparatus according to claim 12, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 51
Dependent Claim
24 words
A film image reading apparatus according to claim 12, further comprising means for moving a reading position of said reading means on the film.
Claim 52
Dependent Claim
28 words
A film image reading apparatus according to claim 12, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 53
Dependent Claim
39 words
A film image reading apparatus according to claim 14, wherein said identifying means is adapted to identify the abnormality in said illuminating means on the basis of a differential between the detected image density and the detected base density.
Claim 54
Dependent Claim
22 words
A film image reading apparatus according to claim 14, further comprising means for displaying a result of identification by said identifying means.
Claim 55
Dependent Claim
28 words
A film image reading apparatus according to claim 14, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 56
Dependent Claim
24 words
A film image reading apparatus according to claim 14, further comprising means for moving a reading position of said reading means on the film.
Claim 57
Dependent Claim
28 words
A film image reading apparatus according to claim 14, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 58
Dependent Claim
46 words
A film image reading apparatus according to claim 17, wherein said identifying means is adapted to identify, whether or not the position of the image of the film is proper on the basis of a differential between the detected image density and the detected base density.
Claim 59
Dependent Claim
22 words
A film image reading apparatus according to claim 17, further comprising means for displaying a result of identification by said identifying means.
Claim 60
Dependent Claim
28 words
A film image reading apparatus according to claim 17, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by a film.
Claim 61
Dependent Claim
24 words
A film image reading apparatus according to claim 17, further comprising means for moving a reading position of said reading means on the film.
Claim 62
Dependent Claim
28 words
A film image reading apparatus according to claim 17, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 63
Dependent Claim
124 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals form said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the thus detected image density and base density.
Claim 64
Dependent Claim
124 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and for outputting image signals representing the image; first detection means for detecting an image density of the image recorded on the film on the basis of the image signals form said reading means; second detection means for detecting a base density of the film on the basis of the image signals from said reading means; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the thus detected image density and base density.
Claim 65
Dependent Claim
42 words
A film image reading apparatus according to claim 56, wherein said processing means comprises quantizing means for quantizing the image signals output from said reading means, and said determining means determines a threshold value for quantizing the image signals as the parameter.
Claim 66
Dependent Claim
28 words
A film image reading apparatus according to claim 57, wherein said quantizing means is adapted to compare the image signals with the threshold value to generate binary signals.
Claim 67
Dependent Claim
36 words
A film image reading apparatus according to claim 56, wherein said first detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading means.
Claim 68
Dependent Claim
33 words
A film image reading apparatus according to claim 56, wherein said first detection means is adapted to detect the image density of an image corresponding to a predetermined partial area of the film.
Claim 69
Dependent Claim
28 words
A film image reading apparatus according to claim 56, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by the film.
Claim 70
Dependent Claim
24 words
A film image reading apparatus according to claim 56, further comprising means for moving a reading position on the film of said reading means.
Claim 71
Dependent Claim
28 words
A film image reading apparatus according to claim 56, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 72
Dependent Claim
119 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading line by line the image recorded on the film illuminated by said illuminating means and/or outputting image signals representing the image; means for dividing the image signals of each reading line, output from said reading means, into plurality blocks, each block including a predetermined amount of the image signals; means for detecting a respective peak value of the image signals in each block; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the detected peak value of each block.
Claim 73
Dependent Claim
119 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading line by line the image recorded on the film illuminated by said illuminating means and/or outputting image signals representing the image; means for dividing the image signals of each reading line, output from said reading means, into plurality blocks, each block including a predetermined amount of the image signals; means for detecting a respective peak value of the image signals in each block; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the detected peak value of each block.
Claim 74
Dependent Claim
42 words
A film image reading apparatus according to claim 64, wherein said processing means comprises quantizing means for quantizing the image signals output from said reading means, and said determining means determines a threshold value for quantizing the image signals as the parameter.
Claim 75
Dependent Claim
30 words
A film image reading apparatus according to claim 64, wherein said determining means is adapted to determine the parameter on the basis of the frequency of the detected peak values.
Claim 76
Dependent Claim
31 words
A film image reading apparatus according to claim 64, wherein said detecting means is adapted to detect the peak, value of image signals corresponding to a predetermined area of the film.
Claim 77
Dependent Claim
29 words
A film image reading apparatus according to claim 65, wherein said quantizing means is adapted to compare the image signals with the threshold value to generate binary image signals.
Claim 78
Dependent Claim
39 words
A film image reading apparatus according to claim 64, further comprising second detecting means for detecting a base density of the film, wherein said determining means is adapted to determine the parameter in consideration of the detected base density.
Claim 79
Dependent Claim
28 words
A film image reading apparatus according to claim 64, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by the film.
Claim 80
Dependent Claim
24 words
A film image reading apparatus according to claim 64, further comprising means for moving a reading position of said reading means on the film.
Claim 81
Dependent Claim
28 words
A film image reading apparatus according to claim 64, further comprising means for displaying an enlarged image, which is an enlargement of the image recorded on the film.
Claim 82
Dependent Claim
102 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; means for detecting an image density of an image corresponding to as predetermined partial area of the film on the basis of the image signals from said reading means; means for processing the image signal output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the detected density of an image.
Claim 83
Dependent Claim
102 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; means for detecting an image density of an image corresponding to as predetermined partial area of the film on the basis of the image signals from said reading means; means for processing the image signal output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the detected density of an image.
Claim 84
Dependent Claim
42 words
A film image reading apparatus according to claim 73, wherein said processing means comprises quantizing means for quantizing the image signals output from said reading means, and said determining means determines a threshold value for quantizing the image signals as a parameter.
Claim 85
Dependent Claim
29 words
A film image reading apparatus according to claim 74, wherein said quantizing means is adapted to compare the image signals with the threshold value to generate binary image signals.
Claim 86
Dependent Claim
36 words
A film image reading apparatus according to claim 73, wherein said detecting means is adapted to detect the image density on the basis of the peak value of the image signal output from said reading means.
Claim 87
Dependent Claim
39 words
A film image reading apparatus according to claim 73, further comprising second detecting means for detecting a base density of the film, wherein said determining means is adapted to determine the parameter in consideration of the detected base density.
Claim 88
Dependent Claim
28 words
A film image reading apparatus according to claim 73, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by the film.
Claim 89
Dependent Claim
24 words
A film image reading apparatus according to claim 73, further comprising means for moving a reading position of said reading means on the film.
Claim 90
Dependent Claim
28 words
A film image reading apparatus according to claim 73, further comprising means for displaying an enlarged image which is an enlargement of the image recorded on the film.
Claim 91
Dependent Claim
33 words
A film image reading apparatus according to claim 73, wherein said first detection means comprises means for extracting the image signals representing the image corresponding to a predetermined partial area of the film.
Claim 92
Dependent Claim
138 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; first detection means for detecting an output value of said reading means in a state where the film is not illuminated by said illuminating means; second detection means for detecting an image density of the image record on the film on the basis of the image signals from said reading means in a state where the film is illuminated by said illuminating means; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the thus detected output value and image density.
Claim 93
Dependent Claim
138 words
A film image reading apparatus comprising: means for illuminating a film on which an image is recorded; means for reading the image recorded on the film illuminated by said illuminating means and outputting image signals representing the image; first detection means for detecting an output value of said reading means in a state where the film is not illuminated by said illuminating means; second detection means for detecting an image density of the image record on the film on the basis of the image signals from said reading means in a state where the film is illuminated by said illuminating means; means for processing the image signals output from said reading means, for image reproduction; and means for determining a parameter for processing the image signals on the basis of the thus detected output value and image density.
Claim 94
Dependent Claim
42 words
A film image reading apparatus according to claim 82, wherein said processing means comprises quantizing means for quantizing the image signals output from said reading means, and said determining means determines a threshold value for quantizing the image signals as a parameter.
Claim 95
Dependent Claim
30 words
A film image reading apparatus according to claim 83, wherein said quantizing means is adapted to compare the image signals with the threshold value to generate a binary image signal.
Claim 96
Dependent Claim
35 words
A film image reading apparatus according claim 82, wherein said second detection means is adapted to detect the image density on the basis of a peak value of the image signals from said reading means.
Claim 97
Dependent Claim
33 words
A film image reading apparatus according to claim 82, wherein said second detection means is adapted to detect the image density of an image corresponding to a predetermined partial area of the film.
Claim 98
Dependent Claim
39 words
A film image reading apparatus according to claim 82, further comprising third detection means for detecting a base density of the film, wherein said determining means is adapted to determine the parameter in consideration of the detected base density.
Claim 99
Dependent Claim
28 words
A film image reading apparatus according to claim 82, wherein said reading means comprises a linear image sensor capable of photoelectric conversion of light transmitted by the film.
Claim 100
Dependent Claim
24 words
A film image reading apparatus according to claim 82, further comprising means for moving a reading position of said reading means on the film.
Claim 101
Dependent Claim
28 words
A film image reading apparatus according to claim 82, further comprising means for displaying an enlarged image which is an enlargement of the image recorded on the film.
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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) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |