US4774536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera
Assignee: Minolta Co Ltd
•
Filing: 1987-01-08
•
Granted: 1988-09-27
•
Expires: 2007-01-08
Abstract
Abstract A photographic camera wherein photographing mode selecting circuit is provided to select a real focal length photographing mode and a pseudo focal length photographing mode for making a print of a field narrower than the field defined by the real focal length photographing mode and output means outputs a pseudo focal length signal corresponding to the pseudo focal length of a photographic lens when pseudo focal length photographing mode is selected.
Inventors
- 👤 Manabu Inoue
- 👤 Nobuyuki Taniguchi
- 👤 Yoshiaki Hata
- 👤 Takeo Hoda
- 👤 Yoshinobu Kudo
- 👤 Hiroshi Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:38
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B19/00; G03B19/02; G03B19/04; G03B27/00; G03B27/32; G03B27/46; G03B27/462; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/005; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
A photographic camera comprising: selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first output means for producing a real focal length photographing mode signal when the real focal length photographing mode is selected, and for producing a pseudo focal length photographing mode signal when the pseudo focal length photographing mode is selected; photographing means for photographing an image according to the signals produced by the first output means; second output means for producing a range signal representing a range of a field to be printed in the pseudo focal length photographing mode; third output means for producing a real focal length signal corresponding to a real focal length of a photographing lens; and calculating means for calculating a pseudo focal length on the basis of the range signal and the real focal length signal.
Claim 2
Dependent Claim
162 words
A photographic camera comprising: selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first output means for producing a real focal length photographing mode signal when the real focal length photographing mode is selected, and for producing a pseudo focal length photographing mode signal when the pseudo focal length photographing mode is selected; photographing means for photographing an image according to the signals produced by the first output means; second output means for producing a range signal representing a range of a field to be printed in the pseudo focal length photographing mode; third output means for producing a real focal length signal corresponding to a real focal length of a photographing lens; and calculating means for calculating a pseudo focal length on the basis of the range signal and the real focal length signal.
Claim 3
Dependent Claim
39 words
The photographic camera according to claim 1 further comprising a plurality of program exposure control modes, wherein said photographing means comprises: mode selecting means for selecting one of the program exposure control modes corresponding to the pseudo focal length.
Claim 4
Dependent Claim
32 words
The photographic camera according to claim 1, wherein said photographing means comprises: means for changing a critical exposure time for warning of a camera shake condition, corresponding to the pseudo focal length.
Claim 5
Dependent Claim
24 words
The photographic camera according to claim 1, wherein said photographing means comprises: means for emitting a flash light corresponding to the pseudo focal length.
Claim 6
Dependent Claim
113 words
A photographic camera comprising: selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first output means for producing a range signal representing a range of a field to be printed in the pseudo focal length photographing mode; second output means for producing an aperture signal corresponding to an aperture value to be controlled in the photographing; calculating means for calculating an equivalent aperture value on the basis of the range signal and the aperture signal; and display means for displaying information representing the equivalent aperture value.
Claim 7
Dependent Claim
113 words
A photographic camera comprising: selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first output means for producing a range signal representing a range of a field to be printed in the pseudo focal length photographing mode; second output means for producing an aperture signal corresponding to an aperture value to be controlled in the photographing; calculating means for calculating an equivalent aperture value on the basis of the range signal and the aperture signal; and display means for displaying information representing the equivalent aperture value.
Claim 8
Dependent Claim
121 words
A photographic camera comprising: first selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first light measuring means for measuring a light value of a relatively wide area of the photographing field; second light measuring means for measuring a light value of a part of the photographing field narrower than said wide area; second selecting means for selecting the first or second light measuring means; and control means for overriding the selection of the second selecting means for forcibly selecting the second light measuring means when the pseudo focal length photographing mode is selected.
Claim 9
Dependent Claim
121 words
A photographic camera comprising: first selecting means for selecting a real focal length photographing mode or a pseudo focal length photographing mode for making a print of a field narrower than a field defined in the real focal length photographing mode; first light measuring means for measuring a light value of a relatively wide area of the photographing field; second light measuring means for measuring a light value of a part of the photographing field narrower than said wide area; second selecting means for selecting the first or second light measuring means; and control means for overriding the selection of the second selecting means for forcibly selecting the second light measuring means when the pseudo focal length photographing mode is selected.
References Cited (Backward Citations)
US4514073A
Cited
JPS59123824A
Cited
JPS59123825A
Cited
US4583831A
Cited
US4652104A
Cited
US4639111A
Cited
US4650304A
Cited
US4647170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |