Patent US4639113A successfully refreshed from Google Patents.
US4639113A
Expired / Lapsed
US
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Camera display device
Assignee: Nikon Corp
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Filing: 1985-09-30
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Granted: 1987-01-27
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Expires: 2005-09-30
Abstract
Abstract A display device for simultaneously displaying a manual mode exposure and correction values for optimal exposures of other modes is provided. As a result, a compact display device for displaying a deviation from an optimal exposure of a manual mode and exposure correction values for optimal exposures in aperture-priority, shutter-priority and program modes within the viewfinder at a sufficient resolution.
Inventors
- 👤 Yuji Ohkubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:20
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
A camera operative in a first mode as an automatic control mode for automatically controlling at least one of an aperture and a shutter so as to obtain an optimal exposure, and in a second mode for manually controlling an aperture value and a shutter speed to be controlled, and having a member operated in the first mode to deviate an exposure to be controlled from the optimal exposure, including: (a) detecting means for detecting a deviation of the exposure from the optimal exposure and an exposure deviation direction thereof upon operation of said member in the first mode and generating a first detection signal; and (b) display means having a plurality of display parts for displaying the deviation and the exposure deviation direction in response to the first detection signal; (c) said detecting means being adapted to generate a second detection signal representing a deviation of an exposure and an exposure deviation direction thereof obtained as a combination of a manually preset aperture value and shutter speed in the second mode; and (d) said plurality of display parts being adapted to display the deviation and the exposure deviation direction in response to the second detection signal.
Claim 2
Dependent Claim
197 words
A camera operative in a first mode as an automatic control mode for automatically controlling at least one of an aperture and a shutter so as to obtain an optimal exposure, and in a second mode for manually controlling an aperture value and a shutter speed to be controlled, and having a member operated in the first mode to deviate an exposure to be controlled from the optimal exposure, including: (a) detecting means for detecting a deviation of the exposure from the optimal exposure and an exposure deviation direction thereof upon operation of said member in the first mode and generating a first detection signal; and (b) display means having a plurality of display parts for displaying the deviation and the exposure deviation direction in response to the first detection signal; (c) said detecting means being adapted to generate a second detection signal representing a deviation of an exposure and an exposure deviation direction thereof obtained as a combination of a manually preset aperture value and shutter speed in the second mode; and (d) said plurality of display parts being adapted to display the deviation and the exposure deviation direction in response to the second detection signal.
Claim 3
Dependent Claim
56 words
A camera according to claim 1, wherein said plurality of display parts comprises one main display part for representing that the deviations represented by the first and second detection signals are zero, and a plurality of auxiliary display parts for displaying the deviaitons and the exposure deviation direcitons represented by the first and second detection signals.
Claim 4
Dependent Claim
143 words
A camera according to claim 2, wherein said display means drives, in response to one of the first and seocnd detection signals, one of said plurality of auxiliary display parts for displaying the deviation and the exposure deviation direction represented by said one of the first and second detection signals, and, in response to the other of the first and second detection signals, said main display part, said one of said plurality of auxiliary display parts which displays the deviation and the exposure deviation direction represented by said other of the first and second detection signals, and at least one of said plurality of auxiliary display parts sandwiched between said main display part and said one of said plurality of auxiliary display parts which displays the deviation and the exposure deviation direction represented by said other of the first and second detection signals.
Claim 5
Dependent Claim
43 words
A camera according to claim 1, wherein said display means displays a scale of the deviation and the exposure deviation direction upon operation of said member in the first mode and the scale irrespective of operation of said member in the second mode.
Claim 6
Dependent Claim
39 words
A camera according to claim 1, further including means for generating a third detection signal representing that said member is operated in the second mode, and said display means is periodically operated in response to the third detection signal.
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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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |