US4624540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film speed setting device for camera
Assignee: Nikon Corp
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Filing: 1985-03-07
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Granted: 1986-11-25
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Expires: 2005-03-07
Abstract
Abstract A camera is capable of using a film cartridge bearing code indicia indicating the film speed of the film contained in the cartridge. The camera comprises first means for detecting the film speed from the code indicia of the film cartridge loaded in the camera and generating a first corresponding signal, and second means for manually setting the film speed and generating a second corresponding signal. The camera further comprises discriminator means connected to the first and second means and adapted to generate an output signal upon detection that neither the first nor the second signal is generated, and means for generating an alarm in response to the output signal of the discriminator means.
Inventors
- 👤 Sunao Ishizaka
- 👤 Osamu Maida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:53
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
A camera capable of using a film cartridge bearing code indicia indicating a film speed of a film contained in said cartridge, comprising: (a) first means for detecting said film speed from said code indicia of said film cartridge loaded in said camera and generating a first corresponding signal; (b) second means for manually setting the film speed and generating a second corresponding signal; (c) means connected to said first and second means and adapted to produce a first alarm output when neither said first nor said second signal is generated and to produce a second alarm output when both said first and second signals are generated and when the film speed corresponding to said first signal and the film speed corresponding to said second signal are mutually different; and (d) alarm means including means for preventing the operation of said camera for photography and display means having a first display state and a second display state different from said first display state, said alarm means further including means for driving said preventing means and said display means in said first display state in response to said first alarm output and for driving said display means in said second display state in response to said second alarm output.
Claim 2
Dependent Claim
208 words
A camera capable of using a film cartridge bearing code indicia indicating a film speed of a film contained in said cartridge, comprising: (a) first means for detecting said film speed from said code indicia of said film cartridge loaded in said camera and generating a first corresponding signal; (b) second means for manually setting the film speed and generating a second corresponding signal; (c) means connected to said first and second means and adapted to produce a first alarm output when neither said first nor said second signal is generated and to produce a second alarm output when both said first and second signals are generated and when the film speed corresponding to said first signal and the film speed corresponding to said second signal are mutually different; and (d) alarm means including means for preventing the operation of said camera for photography and display means having a first display state and a second display state different from said first display state, said alarm means further including means for driving said preventing means and said display means in said first display state in response to said first alarm output and for driving said display means in said second display state in response to said second alarm output.
Claim 3
Dependent Claim
61 words
A camera according to claim 1 further comprising another display means connected to said first and second means and adapted to display a corresponding film speed when at least either one of said first and second signals is generated, wherein said another display means comprises means for selecting said second signal when both said first and said second signals are generated.
Claim 4
Dependent Claim
31 words
A camera according to claim 1 further comprising means for controlling an exposure of said film, based on said second signal when both said first and said second signals are generated.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |