Patent US4461560A successfully refreshed from Google Patents.
US4461560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic information display device
Assignee: West Electric Co Ltd
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Filing: 1981-11-30
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Granted: 1984-07-24
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Expires: 2001-11-30
Abstract
Abstract So far, the windows for displaying the number of frames exposed, a film speed, an aperture, a shutter speed and the like have been located at various positions on a camera body, but according to the present invention such photographic information can be displayed at the same place in the vicinity of a viewfinder or in the field of view thereof by a display device comprising an electro-optical display unit and a display information selection means adapted to cause the display unit to display the desired information.
Inventors
- 👤 Tsunemi Yoshino
- 👤 Hiroshi Iwata
- 👤 Toshitsugu Kashihara
- 👤 Akitoshi Morioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:16
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
A photographic information display device comprising a plurality of switching means each of which is activated in response to the setting of each of a plurality of photographic information items, a liquid-crystal display device which can store therein said plurality of photographic information items and which is disposed in the vicinity of a view finder of a camera or the like, a power supply which is connected through said plurality of switching means to said liquid-crystal display device, the viewing side of an eyepiece of said viewfinder of a camera or the like being covered with a liquid-crystal window of said liquid-crystal display device, said window being so driven and controlled that when photographic conditions are inadequate, said liquid-crystal window is intermittently opened and closed or remains closed.
Claim 2
Dependent Claim
128 words
A photographic information display device comprising a plurality of switching means each of which is activated in response to the setting of each of a plurality of photographic information items, a liquid-crystal display device which can store therein said plurality of photographic information items and which is disposed in the vicinity of a view finder of a camera or the like, a power supply which is connected through said plurality of switching means to said liquid-crystal display device, the viewing side of an eyepiece of said viewfinder of a camera or the like being covered with a liquid-crystal window of said liquid-crystal display device, said window being so driven and controlled that when photographic conditions are inadequate, said liquid-crystal window is intermittently opened and closed or remains closed.
Claim 3
Dependent Claim
247 words
A photographic information display device for displaying a plurality of photographic information items such as number of exposures made, film speed, aperture and the like, said device comprising: (a) a display unit for displaying said plurality of photographic information items at the same place; (b) a photographic information setting means for setting one of said plurality of photographic information items and generating a first electric signal corresponding to the item which is set; (c) an exposure counter for counting the number of exposures made and generating a second electric signal corresponding thereto; (d) a memory means for storing said plurality of photographic information items as code data and generating an output signal corresponding to said first or second electric signal when said first or second electric signal has been input to said memory means; (e) a timing circuit for applying a timing signal to said display device; (f) a first switching means for activating said photographic information setting means when said first switching means is on and deactivating said photographic information setting means when said first switching means is off; (g) a second switching means for activating said exposure counter when said second switching means is on and deactivating said exposure counter when said second switching means is off; and (h) a third switching means coupled between said first switching means and said second switching means for switching off said second switching means and switching on said second switching means when said third switching means is off.
Claim 4
Dependent Claim
247 words
A photographic information display device for displaying a plurality of photographic information items such as number of exposures made, film speed, aperture and the like, said device comprising: (a) a display unit for displaying said plurality of photographic information items at the same place; (b) a photographic information setting means for setting one of said plurality of photographic information items and generating a first electric signal corresponding to the item which is set; (c) an exposure counter for counting the number of exposures made and generating a second electric signal corresponding thereto; (d) a memory means for storing said plurality of photographic information items as code data and generating an output signal corresponding to said first or second electric signal when said first or second electric signal has been input to said memory means; (e) a timing circuit for applying a timing signal to said display device; (f) a first switching means for activating said photographic information setting means when said first switching means is on and deactivating said photographic information setting means when said first switching means is off; (g) a second switching means for activating said exposure counter when said second switching means is on and deactivating said exposure counter when said second switching means is off; and (h) a third switching means coupled between said first switching means and said second switching means for switching off said second switching means and switching on said second switching means when said third switching means is off.
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) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |