Patent US4843418A successfully refreshed from Google Patents.
US4843418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera
Assignee: Minolta Co Ltd
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Filing: 1988-06-16
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Granted: 1989-06-27
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Expires: 2008-06-16
Abstract
Abstract The photographic camera which prints a code signal representing printing information on a film is capable of selecting a real focal length photographing mode for printing a normal range of a frame, a plurality of pseudo focal length photographing mode each being different in pseudo focal length from the other, and a close-up photographing mode. Expousre condition is limited in accordance with the selected mode. Upon selection of the photographing modes, a code signal indicative of said selection is produced and printed between frames on the film surface. The film after photographing with this camera is subjected to printing by means of a printer which reads the code signal printed on the film surface, determines an exposure value in accordance with the code signal and determines an enlargement ratio.
Inventors
- 👤 Nobuyuki Taniguchi
- 👤 Yoshiaki Hata
- 👤 Yoshinobu Kudo
- 👤 Manabu Inoue
- 👤 Takeo Hoda
- 👤 Hiroshi Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:54
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B17/20; G03B17/24; G03B27/00; G03B27/32; G03B27/46; G03B27/462; G03B27/72; G03B7/00; G03B7/08; G03B7/091; G03B7/16; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/005; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/246
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
290 words
A photographic camera having a photographic lens, comprising; means for selecting a real focal length photographing mode in which a normal range in a frame of a film will be printed on a photographing paper and a pseudo focal length photographing mode in which a range smaller than the normal range in a frame of the film will be printed on a photographing paper; means for outputting a pseudo focal length signal when the pseudo focal length photographing mode is selected; means for exposing a film to be photographed on the basis of a predetermined program determining a combination of aperture value and shutter speed according to the brightness of an object to be photographed; means for determining a limit exposure value in accordance with an exposure time corresponding to the pseudo focal length and to characteristic of the exposing means; means for measuring light coming from the object to be photographed for calculating an exposure value; means for comparing the calculated exposure value with the determined limit exposure value to produce a flash signal when the calculated exposure value is smaller than the determined limit exposure value; means for illuminating the object with flash light emission; means for controlling the flash means to permit the flash light emission of the flash means in accordance with the flash signal; means for controlling the exposing means in accordance with the calculated exposure value when the calculated exposure value is larger than the determined limit exposure value and in accordance with the determined limit exposure value when the calculated exposure value is smaller than the determined limit exposure value; and means for recording a signal corresponding to the pseudo focal length photographing mode when the pseudo focal length photographing mode is selected.
Claim 2
Dependent Claim
290 words
A photographic camera having a photographic lens, comprising; means for selecting a real focal length photographing mode in which a normal range in a frame of a film will be printed on a photographing paper and a pseudo focal length photographing mode in which a range smaller than the normal range in a frame of the film will be printed on a photographing paper; means for outputting a pseudo focal length signal when the pseudo focal length photographing mode is selected; means for exposing a film to be photographed on the basis of a predetermined program determining a combination of aperture value and shutter speed according to the brightness of an object to be photographed; means for determining a limit exposure value in accordance with an exposure time corresponding to the pseudo focal length and to characteristic of the exposing means; means for measuring light coming from the object to be photographed for calculating an exposure value; means for comparing the calculated exposure value with the determined limit exposure value to produce a flash signal when the calculated exposure value is smaller than the determined limit exposure value; means for illuminating the object with flash light emission; means for controlling the flash means to permit the flash light emission of the flash means in accordance with the flash signal; means for controlling the exposing means in accordance with the calculated exposure value when the calculated exposure value is larger than the determined limit exposure value and in accordance with the determined limit exposure value when the calculated exposure value is smaller than the determined limit exposure value; and means for recording a signal corresponding to the pseudo focal length photographing mode when the pseudo focal length photographing mode is selected.
Claim 3
Dependent Claim
76 words
A photographic camera as claimed in claim 1 further comprising means for discriminating whether the shutter speed calculated in accordance with the measured light is longer than a limited shutter speed corresponding to the determined limit exposure value to produce a low speed limit signal when the calculated shutter speed is longer than the limited shutter speed, and wherein the flash controlling means permits the flash light emission in accordance with the low speed limit signal.
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |