Patent US4763144A successfully refreshed from Google Patents.
US4763144A
Expired / Lapsed
US
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Camera system
Assignee: Minolta Co Ltd
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Filing: 1987-04-29
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Granted: 1988-08-09
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Expires: 2007-04-29
Abstract
Abstract A camera, adapted to function with film speed data, includes structure for introducing the film speed data and for storing that data. Manually set exposure time data is also stored. A determination is made whether the film is advanced to the first effective film frame. The film speed or exposure time data is alternately indicated and the indication is controlled to indicate the film speed data until the film is advanced to the first effective film frame subsequent to which the indication is switched to indicate the exposure time data when the film is advanced to the first effective film frame. The indication may subsequently be manually switched to indicate the film speed data. The film speed data may be read from the film cartridge upon closure of the back lid of the camera and transferred to storage.
Inventors
- 👤 Nobuyuki Taniguchi
- 👤 Masatake Niwa
- 👤 Akira Fujii
- 👤 Takeo Hoda
- 👤 Masaaki Nakai
- 👤 Minoru Sekida
- 👤 Masayoshi Sahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:18
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/091; G03B7/097; G03B7/24; G03B7/26; G03B2217/00; G03B2217/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
166 words
A camera functioning with film speed data, comprising: means for introducing film speed data; first means for storing the film speed data; means respoata, comprising: means for introducing film speed data; first means for storing the film speed data; means responsive to a manual operation for setting exposure time data; second means for storing the exposure time data; means for advancing a film loaded in the camera; means for determining whether or not the film advancing means has completed a predetermined operation required for advancing a film to be loaded in the camera to a predetermined position; means for alternatively indicating one of the film speed data or the exposure time data; and means, responsive to said determining means, for controlling said indicating means to indicate the film speed data until the film advancing means has completed the predetermined operation and switching said indicating means to indicate the exposure time data in said second storing means when the film advancing means has completed the predetermined operation.
Claim 2
Dependent Claim
166 words
A camera functioning with film speed data, comprising: means for introducing film speed data; first means for storing the film speed data; means respoata, comprising: means for introducing film speed data; first means for storing the film speed data; means responsive to a manual operation for setting exposure time data; second means for storing the exposure time data; means for advancing a film loaded in the camera; means for determining whether or not the film advancing means has completed a predetermined operation required for advancing a film to be loaded in the camera to a predetermined position; means for alternatively indicating one of the film speed data or the exposure time data; and means, responsive to said determining means, for controlling said indicating means to indicate the film speed data until the film advancing means has completed the predetermined operation and switching said indicating means to indicate the exposure time data in said second storing means when the film advancing means has completed the predetermined operation.
Claim 3
Dependent Claim
47 words
A camera according to claim 1, further comprising a manually operable member, wherein said controlling means is further responsive to said manually operable member for switching said indicating means to indicate again the film speed data even after the film advancing means has completed the predetermined operation.
Claim 4
Dependent Claim
60 words
A camera according to claim 1, further comprising a back lid, wherein said introducing means includes means for reading the film speed data prepared on the surface of a film cartridge to be loaded in the camera, in relation to the closure of said back lid, and means for transmitting the read film speed data to said first storing means.
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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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |