US5184167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distance metering device of a camera
Assignee: Nikon Corp
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Filing: 1991-12-20
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Granted: 1993-02-02
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Expires: 2011-12-20
Abstract
Abstract A distance metering device of a camera eliminates a troublesome re-setting operation when a remote controller is used as a cable release and avoids the creation of defocused photograph when the remote controller is used as a self-timer. When a first remote control signal receiver is selected, that is, when the remote controller is to be used as the self-timer, a distance metering mode of a multi-point distance metering device is forcibly switched to a multi-point distance metering mode, and when a second remote control signal receiver is selected, that is, when the remote controller is to be used as the cable release, the forced switching is not done.
Inventors
- 👤 Yoshikazu Iida
- 👤 Toru Kosaka
- 👤 Hiroyuki Tsuru
- 👤 Riichi Higaki
- 👤 Akira Katayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:31
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/38; G03B17/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A distance metering device of a camera comprising: multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point; first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter; second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field; remote control signal receiver selection means for selecting one of said first and second remote control singal receiving means; and control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said first remote control signal receiving means is selected by said remote control signal receiver selection means.
Claim 2
Dependent Claim
147 words
A distance metering device of a camera comprising: multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point; first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter; second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field; remote control signal receiver selection means for selecting one of said first and second remote control singal receiving means; and control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said first remote control signal receiving means is selected by said remote control signal receiver selection means.
Claim 3
Dependent Claim
158 words
A distance metering device of a camera comprising: multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point; first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter; second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field; compare means for comparing magnitudes of signals transmitted from said remote control transmitter to said first remote control signal receiving means and said second remote control signal receiving means; and control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said compare means determines that the signal received by said first remote control signal receiving means is larger.
Claim 4
Dependent Claim
158 words
A distance metering device of a camera comprising: multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point; first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter; second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field; compare means for comparing magnitudes of signals transmitted from said remote control transmitter to said first remote control signal receiving means and said second remote control signal receiving means; and control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said compare means determines that the signal received by said first remote control signal receiving means is larger.
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) | 1996-02-02 | 1996-08-03 | 1997-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-02 | 2000-08-03 | 2001-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-02 | 2004-08-03 | 2005-02-02 | $7700.00 | Window Closed / Lapsed |