US4437742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera capable of automatically responding to data coded on film
Assignee: Minolta Co Ltd
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Filing: 1981-09-23
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Granted: 1984-03-20
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Expires: 2001-09-23
Abstract
Abstract A camera includes a detector for detecting codes provided on a film as the film advances, another detector for detecting sprocket holes provided on the camera so as to detect the speed of film advance, a register for registering signals representative of codes at a speed relative to the speed of film advance, and a device for reading the registered data. Accordingly, the codes on the film informs the camera of various data, such as film speed, available exposure frame number, etc., and the camera automatically sets these data for the proper photographing operation.
Inventors
- 👤 Nobuyuki Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:21
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; G03B17/00; G03B17/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A camera capable of automatically responding to film speed data received from a film to be loaded in the camera comprising: means for receiving digital data representative of the film speed from the film; means for storing the digital film speed data received by said receiving means; a digital calculating means, responsive to the digital data stored in said storing means, for calculating digital exposure information; means for generating predetermined invariable digital data representative of a constant film speed capable of being substituted for the digital data to be stored in said storing means; means for automatically adopting said invariable digital data to substitute it for the digital data from the film when said storing means is incapable of storing the digital data from the film; means for digitally displaying the result of the calculation by said calculating means; and means for controlling the exposure of the camera in accordance with the result of the calculation by said calculating means.
Claim 2
Dependent Claim
160 words
A camera capable of automatically responding to film speed data received from a film to be loaded in the camera comprising: means for receiving digital data representative of the film speed from the film; means for storing the digital film speed data received by said receiving means; a digital calculating means, responsive to the digital data stored in said storing means, for calculating digital exposure information; means for generating predetermined invariable digital data representative of a constant film speed capable of being substituted for the digital data to be stored in said storing means; means for automatically adopting said invariable digital data to substitute it for the digital data from the film when said storing means is incapable of storing the digital data from the film; means for digitally displaying the result of the calculation by said calculating means; and means for controlling the exposure of the camera in accordance with the result of the calculation by said calculating means.
Claim 3
Dependent Claim
22 words
A camera as claimed in claim 1 further comprising means for displaying the digital film speed data utilized by said calculating means.
Claim 4
Dependent Claim
117 words
A camera capable of automatically responding to film speed data received from a film to be loaded in the camera comprising: means for receiving digital data representative of the film speed; means for storing the digital film speed data received by said receiving means; means for generating predetermined invariable digital data representative of a constant film speed capable of being substituted for the digital data to be stored in said storing means; means responsive to the digital data stored in said storing means for displaying the digital film speed data; and means for automatically adopting said invariable digital data to substitute it for the film data when said storing means is incapable of storing the film data.
Claim 5
Dependent Claim
117 words
A camera capable of automatically responding to film speed data received from a film to be loaded in the camera comprising: means for receiving digital data representative of the film speed; means for storing the digital film speed data received by said receiving means; means for generating predetermined invariable digital data representative of a constant film speed capable of being substituted for the digital data to be stored in said storing means; means responsive to the digital data stored in said storing means for displaying the digital film speed data; and means for automatically adopting said invariable digital data to substitute it for the film data when said storing means is incapable of storing the film data.
References Cited (Backward Citations)
GB1031771A
Cited
CH416323A
Cited
US3576369A
Cited
US4200371A
Cited
US4215920A
Cited
US4173401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |