US5142310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pseudo format camera system
Assignee: Minolta Co Ltd
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Filing: 1990-07-25
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Granted: 1992-08-25
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Expires: 2010-07-25
Abstract
Abstract A pseudo format camera system comprises a film cartridge including a memory which stores film speed data and limitation data, and a camera including a means for setting pseudo focal length, a means for inputting the film speed data and the limitation data from the memory, a means for controlling exposure based on the film speed data, and a means for limiting the pseudo focal length depending on the limitation data. In this camera system, the pseudo focal length can be limited based on the limitation data stored in the memory in the film cartridge, and therefore it is surely prevented that a picture becomes rough because of a bad grainness of a film.
Inventors
- 👤 Nobuyuki Taniguchi
- 👤 Manabu Inoue
- 👤 Toshihiko Ishimura
- 👤 Toshio Yamaki
- 👤 Reiji Seki
- 👤 Atsushi Sumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:44
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/24; G03B7/08; G03B7/091; G03B7/097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A pseudo format camera, comprising: means for producing limitation data representative of a settable pseudo focal length range of a film loaded in the camera, said limitation data being different from a film speed data representative of a film speed of a film loaded in said camera; means for setting a pseudo focal length; and means for limiting a range of the pseudo focal length settable by said setting means in accordance with the limitation data produced by said producing means.
Claim 2
Dependent Claim
81 words
A pseudo format camera, comprising: means for producing limitation data representative of a settable pseudo focal length range of a film loaded in the camera, said limitation data being different from a film speed data representative of a film speed of a film loaded in said camera; means for setting a pseudo focal length; and means for limiting a range of the pseudo focal length settable by said setting means in accordance with the limitation data produced by said producing 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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |