Patent US5298935A successfully refreshed from Google Patents.
US5298935A
Expired / Lapsed
US
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Camera photographic light source determining apparatus
Assignee: Canon Inc
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Filing: 1993-01-15
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Granted: 1994-03-29
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Expires: 2013-01-15
Abstract
Abstract A camera photographic light source determining apparatus has a photometric section for measuring light in a plurality of different ranges, a determination section for determining a photometric range of the plurality of different ranges, in which a main light source for illuminating an object is present, in response to the photometric section, and a detection section for detecting the type of the main light source in response to the determination section.
Inventors
- 👤 Toru Nagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:27
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/091; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/244
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
70 words
A camera photographic light source determining apparatus comprising: (A) photometric means for performing photometry of a plurality of different ranges; (B) determination means for determining a photometric range of the plurality of different ranges, where a main light source for illuminating an object is present, in response to said photometric means; and (C) detection means for detecting a type of the main light source in response to said determination means.
Claim 2
Dependent Claim
70 words
A camera photographic light source determining apparatus comprising: (A) photometric means for performing photometry of a plurality of different ranges; (B) determination means for determining a photometric range of the plurality of different ranges, where a main light source for illuminating an object is present, in response to said photometric means; and (C) detection means for detecting a type of the main light source in response to said determination means.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein said photometric means comprises means for performing photometry of a region at the rear of a camera.
Claim 4
Dependent Claim
21 words
An apparatus according to claim 2, wherein said photometric means comprises means for performing photometry of a region above the camera.
Claim 5
Dependent Claim
23 words
An apparatus according to claim 3, wherein said photometric means comprises means for performing photometry of a region in front of the camera.
Claim 6
Dependent Claim
23 words
An apparatus according to claim 2, wherein said photometric means comprises means for performing photometry of a region in front of the camera.
Claim 7
Dependent Claim
23 words
An apparatus according to claim 1, wherein said photometric means comprises means for performing photometry of a region in front of the camera.
Claim 8
Dependent Claim
25 words
An apparatus according to claim 1, wherein said determination means comprises means for making the determination on the basis of an intensity of photometric luminance.
Claim 9
Dependent Claim
33 words
An apparatus according to claim 1, wherein said determination means comprises means for determining the photometric range having a highest photometric luminance as the photometric range where the main light source is present.
Claim 10
Dependent Claim
26 words
An apparatus according to claim 1, wherein said detection means comprises means for detecting a type of the main light source on the basis of wavelength.
Claim 11
Dependent Claim
32 words
An apparatus according to claim 1, wherein said determination means comprises means for weighting in accordance with the range subjected to photometry by said photometric means to obtain results of the determination.
Claim 12
Dependent Claim
30 words
An apparatus according to claim 1, wherein said determination means comprises means for making the determination on the basis of a wavelength of a light measured by said photometric means.
Claim 13
Dependent Claim
22 words
An apparatus according to claim 11, wherein said determination means comprises means for weighting in accordance with the plurality of photometric ranges.
Claim 14
Dependent Claim
30 words
An apparatus according to claim 12, wherein said determination means comprises means for giving preference to a region at the rear of the camera among the plurality of photometric ranges.
Claim 15
Dependent Claim
37 words
An apparatus according to claim 13, wherein said determination means comprises means for giving preference to a region above the camera next to the region at the rear of the camera among the plurality of photometric ranges.
Claim 16
Dependent Claim
65 words
An apparatus according to claim 11, wherein said determination means comprises means for determining a region at the rear of a camera as the photometric range where the main light source is present when the wavelength of the light measured by said photometric means in the region at the rear of the camera is the same as that measured in a region above the camera.
Claim 17
Dependent Claim
32 words
An apparatus according to claim 1, wherein said determination means comprises means for comparing a wavelength of a light measured by said photometric means in accordance with the plurality of photometric ranges.
Claim 18
Dependent Claim
22 words
An apparatus according to claim 16, wherein said determination means comprises means for weighting in accordance with the plurality of photometric ranges.
Claim 19
Dependent Claim
30 words
An apparatus according to claim 17, wherein said determination means comprises means for giving preference to a region at the rear of a camera among the plurality of photometric ranges.
Claim 20
Dependent Claim
37 words
An apparatus according to claim 18, wherein said determination means comprises means for giving preference to a region above the camera next to the region at the rear of the camera among the plurality of photometric ranges.
Claim 21
Dependent Claim
22 words
An apparatus according to claim 1, further comprising recording means for recording results of detection by said detection means on a film.
Claim 22
Dependent Claim
65 words
A camera comprising: (A) photometric means for performing photometry of a plurality of different ranges; (B) determination means for determining a photometric range of the plurality of different ranges, where a main light source for illuminating an object is present, in response to said photometric means; and (C) detection means for detecting a type of the main light source in response to said determination means.
Claim 23
Dependent Claim
65 words
A camera comprising: (A) photometric means for performing photometry of a plurality of different ranges; (B) determination means for determining a photometric range of the plurality of different ranges, where a main light source for illuminating an object is present, in response to said photometric means; and (C) detection means for detecting a type of the main light source in response to said determination means.
Claim 24
Dependent Claim
24 words
A camera according to claim 21, wherein said photometric means comprises means for performing photometry of a region at the rear of a camera.
Claim 25
Dependent Claim
21 words
A camera according to claim 22, wherein said photometric means comprises means for performing photometry of a region above the camera.
Claim 26
Dependent Claim
23 words
A camera according to claim 23, wherein said photometric means comprises means for performing photometry of a region in front of the camera.
Claim 27
Dependent Claim
23 words
A camera according to claim 22, wherein said photometric means comprises means for performing photometry of an region in front of the camera.
Claim 28
Dependent Claim
23 words
A camera according to claim 21, wherein said photometric means comprises means for performing photometry of a region in front of a camera.
Claim 29
Dependent Claim
25 words
A camera according to claim 21, wherein said determination means comprises means for making the determination on the basis of an intensity of photometric luminance.
Claim 30
Dependent Claim
33 words
A camera according to claim 21, wherein said determination means comprises means for determining the photometric range having a highest photometric luminance as the photometric range where the main light source is present.
Claim 31
Dependent Claim
26 words
A camera according to claim 21, wherein said detection means comprises means for detecting a type of the main light source on the basis of wavelength.
Claim 32
Dependent Claim
32 words
A camera according to claim 21, wherein said determination means comprises means for weighting in accordance with the range subjected to photometry by said photometric means to obtain results of the determination.
Claim 33
Dependent Claim
30 words
A camera according to claim 21, wherein said determination means comprises means for making the determination on the basis of a wavelength of a light measured by said photometric means.
Claim 34
Dependent Claim
22 words
A camera according to claim 31, wherein said determination means comprises means for weighting in accordance with the plurality of photometric ranges.
Claim 35
Dependent Claim
30 words
A camera according to claim 32, wherein said determination means comprises means for giving preference to a region at the rear of a camera among the plurality of photometric ranges.
Claim 36
Dependent Claim
37 words
A camera according to claim 33, wherein said determination means comprises means for giving preference to a region above the camera next to the region at the rear of the camera among the plurality of photometric ranges.
Claim 37
Dependent Claim
65 words
A camera according to claim 31, wherein said determination means comprises means for determining a region at the rear of a camera as the photometric range where the main light source is present when the wavelength of the light measured by said photometric means in the region at the rear of the camera is the same as that measured in a region above the camera.
Claim 38
Dependent Claim
32 words
A camera according to claim 21, wherein said determination means comprises means for comparing a wavelength of a light measured by said photometric means in accordance with the plurality of photometric ranges.
Claim 39
Dependent Claim
22 words
A camera according to claim 36, wherein said determination means comprises means for weighting in accordance with the plurality of photometric ranges.
Claim 40
Dependent Claim
30 words
A camera according to claim 37, wherein said determination means comprises means for giving preference to a region at the rear of a camera among the plurality of photometric ranges.
Claim 41
Dependent Claim
37 words
A camera according to claim 38, wherein said determination means comprises means for giving preference to a region above the camera next to the region at the rear of the camera among the plurality of photometric ranges.
Claim 42
Dependent Claim
22 words
A camera according to claim 21, further comprising recording means for recording results of detection by said detection means on a film.
Claim 43
Dependent Claim
32 words
An apparatus according to claim 1, wherein said determination means comprises means for making the determination by majority on the basis of a wavelength of a light measured by said photometric means.
Claim 44
Dependent Claim
18 words
An apparatus according to claim 1, wherein said determination means comprises means for making the determination by majority.
Claim 45
Dependent Claim
32 words
A camera according to claim 21, wherein said determination means comprises means for making the determination by majority on the basis of a wavelength of a light measured by said photometric means.
Claim 46
Dependent Claim
18 words
A camera according to claim 21, wherein said determination means comprises means for making the determination by majority.
References Cited (Backward Citations)
JPS5853327A
Cited
US4947196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |