Patent US4864149A successfully refreshed from Google Patents.
US4864149A
Expired / Lapsed
US
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Method of detecting frame edge
Assignee: Fujifilm Holdings Corp
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Filing: 1987-12-23
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Granted: 1989-09-05
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Expires: 2007-12-23
Abstract
Abstract A method of detecting a frame edge of a film by a first group of light-receiving element arrays and a second group of light-receiving element arrays, each of the groups being composed of at least one array of light-receiving elements disposed perpendicular to the advancing direction of the film in such a manner as to be parallel with each other. The presence of a frame edge is preliminarily detected by the first group of light-receiving element arrays, and the position of the frame edge is precision-detected by the second group of light-receiving element arrays. Accordingly, since the precision detetction is effected after preliminary detection, the range of precision detection can be narrowed, thereby shortening the detection time.
Inventors
- 👤 Fumio Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:35
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6271; G03B27/6285
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge.
Claim 2
Independent Claim
133 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge.
Claim 3
Dependent Claim
41 words
A method of detecting a frame edge according to claim 1, wherein the presence of said frame edge is preliminarily detected by detecting the presence of a film edge by said first group of light-receiving element arrays in said step (a).
Claim 4
Dependent Claim
45 words
A method of detecting a frame edge, according to claim 2, wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor.
Claim 5
Dependent Claim
45 words
A method of detecting a frame edge, according to claim 1, wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor.
Claim 6
Dependent Claim
37 words
A method of detecting a frame edge, according to claim 1, wherein a film-feeding speed at the time of implementing said step (A) is greater than the film-feeding speed at the time of implementing said step (B).
Claim 7
Dependent Claim
29 words
A method of detecting a frame edge, according to claim 1, wherein the presence of said frame edge is preliminarily detected after detecting the presence of said film edge.
Claim 8
Dependent Claim
54 words
A method of detecting a frame edge, according to claim 1, wherein the presence of said frame edge is preliminarily detected when a point of change in which an output of said group of light-receiving element arrays reaches a value between a base density of said film and a fogging density thereof is detected.
Claim 9
Independent Claim
223 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge, and wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor, and wherein, in implementing said steps of (a) and (b) using an exposure-controlling image sensor of an automatic photographic printing apparatus as said two-dimensional image sensor, the sensitivity of said image sensor is made relatively lower than in the case of detecting image information of a frame to control the exposure using said image sensor.
Claim 10
Independent Claim
223 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge, and wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor, and wherein, in implementing said steps of (a) and (b) using an exposure-controlling image sensor of an automatic photographic printing apparatus as said two-dimensional image sensor, the sensitivity of said image sensor is made relatively lower than in the case of detecting image information of a frame to control the exposure using said image sensor.
Claim 11
Dependent Claim
68 words
A method of detecting a frame edge, according to claim 8, accumulation-type photoelectric conversion elements are used as light-receiving elements of said first and second groups of light-receiving element arrays, and the relative lowering of the sensitivity is effected by changing the dynamic range of said accumulation-type photoelectric conversion elements in such a manner that a quantity of light incident upon said accumulation-type photoelectric conversion elements is reduced.
Claim 12
Dependent Claim
66 words
A method of detecting a frame edge, according to claim 8, accumulation-type photoelectric conversion elements are used as light-receiving elements of said first and second groups of light-receiving element arrays, and the relative lowering of the sensitivity is effected by changing the dynamic range of said accumulation-type photoelectric conversion elements in such a manner that the accumulation time of said accumulation-type photoelectric conversion elements is shortened.
Claim 13
Independent Claim
251 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge; wherein the presence of said frame edge is preliminarily detected by detecting the presence of a film edge by said first group of light-receiving element arrays in step (a), wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor, and wherein, in implementing said steps of (a) and (b) using an exposure-controlling image sensor of an automatic photographic printing apparatus as said two-dimensional image sensor, the sensitivity of said image sensor is made relatively lower than in the case of detecting image information of a frame to control the exposure using said image sensor.
Claim 14
Independent Claim
251 words
A method of detecting a frame edge of a film fed by first and second groups of light-receiving element arrays, said first group of light-receiving element arrays being composed of at least one array extending perpendicular to an advancing direction of said film, said second group of light-receiving element arrays being composed of at least one array extending in the same direction as that of said first group of light-receiving element arrays in such a manner as to be parallel with said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precision-detecting the position of said frame edge by said second group of light-receiving element arrays after preliminary detection of said frame edge; wherein the presence of said frame edge is preliminarily detected by detecting the presence of a film edge by said first group of light-receiving element arrays in step (a), wherein each of said first and second groups of light-receiving element arrays is constituted by at least one specific array of light-receiving elements extending perpendicular to a film-feeding direction of a two-dimensional image sensor, and wherein, in implementing said steps of (a) and (b) using an exposure-controlling image sensor of an automatic photographic printing apparatus as said two-dimensional image sensor, the sensitivity of said image sensor is made relatively lower than in the case of detecting image information of a frame to control the exposure using said image sensor.
Claim 15
Dependent Claim
66 words
A method of detecting a frame edge, according to claim 11, accumulation-type photoelectric conversion elements are used as light-receiving elements of said first and second groups of light-receiving element arrays, and the relative lowering of the sensitivity is effected by changing the dynamic range of said accumulation-type photoelectric conversion elements in such a manner that the accumulation time of said accumulation-type photoelectric conversion elements is shortened.
Claim 16
Dependent Claim
68 words
A method of detecting a frame edge, according to claim 11, accumulation-type photoelectric conversion elements are used as light-receiving elements of said first and second groups of light-receiving element arrays, and the relative lowering of the sensitivity is effected by changing the dynamic range of said accumulation-type photoelectric conversion elements in such a manner that a quantity of light incident upon said accumulation-type photoelectric conversion elements is reduced.
Claim 17
Independent Claim
129 words
A method of detecting a frame edge of a film to position said film fed by a first group of light-receiving element arrays constituted by at least one array extending perpendicular to an advancing direction of said film and a second group of light-receiving element arrays constituted by at least one array disposed parallel with said first group of light-receiving element arrays downstream of the advancing direction of said film at a predetermined distance from said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precisely detecting the position of said frame edge by said second group of light-receiving element arrays after said frame edge has been preliminarily detected.
Claim 18
Independent Claim
129 words
A method of detecting a frame edge of a film to position said film fed by a first group of light-receiving element arrays constituted by at least one array extending perpendicular to an advancing direction of said film and a second group of light-receiving element arrays constituted by at least one array disposed parallel with said first group of light-receiving element arrays downstream of the advancing direction of said film at a predetermined distance from said first group of light-receiving element arrays, comprising the steps of: (a) preliminarily detecting the presence of said frame edge by said first group of light-receiving element arrays; and (b) precisely detecting the position of said frame edge by said second group of light-receiving element arrays after said frame edge has been preliminarily detected.
Claim 19
Dependent Claim
41 words
A method of detecting a frame edge according to claim 14, wherein the presence of said frame edge is preliminarily detected by detecting the presence of a film edge by said first group of light-receiving element arrays in said step (a).
Claim 20
Dependent Claim
37 words
A method of detecting a frame edge, according to claim 14, wherein a film-feeding speed at the time of implementing said step (A) is greater than the film-feeding speed at the time of implementing said step (B).
Claim 21
Dependent Claim
29 words
A method of detecting a frame edge, according to claim 14, wherein the presence of said frame edge is preliminarily detected after detecting the presence of said film edge.
Claim 22
Dependent Claim
54 words
A method of detecting a frame edge, according to claim 14, wherein the presence of said frame edge is preliminarily detected when a point of change in which an output of said group of light-receiving element arrays reaches a value between a base density of said film and a fogging density thereof is detected.
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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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |