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US5239333A Expired / Lapsed US ⏱️ 0.0 years remaining

Camera exposure calculation device dependent on type of scene to be photographed

Assignee: Nikon Corp
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Filing: 1992-08-28
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Granted: 1993-08-24
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Expires: 2012-08-28
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Abstract

Abstract A camera comprises a light metering device for measuring brightnesses of a plurality of light metering areas of an object field in response to light from the object field to generate brightness outputs, a photographing scene setting device for setting a photographing scene and producing photographing scene information, a selection device for selecting a brightness output to be used for exposure calculation from the brightness outputs based on the output of the photographing scene setting device, and an exposure calculation device for calculating an exposure value based on the brightness output selected by the selection device.

Inventors

  • 👤 Tadao Takagi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 11:12
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/34; G03; G03B; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09979

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 123 words
A camera comprising: light receiving means for receiving light from a plurality of areas on an object field and generating a plurality of brightness signals corresponding to said plurality of areas; photographing scene setting means responsive to an operation by a photographer for setting a photographing scene selected from a plurality of different types of objects that may be photographed and producing first information corresponding to the set photographing scene; photographing condition detecting means responsive to a condition of said camera for producing second information which is related to the condition of said camera and different from the photographing scene; and exposure determining means for determining an exposure value based on said plurality of brightness signals, said first information and said second information.
Claim 2
Dependent Claim 123 words
A camera comprising: light receiving means for receiving light from a plurality of areas on an object field and generating a plurality of brightness signals corresponding to said plurality of areas; photographing scene setting means responsive to an operation by a photographer for setting a photographing scene selected from a plurality of different types of objects that may be photographed and producing first information corresponding to the set photographing scene; photographing condition detecting means responsive to a condition of said camera for producing second information which is related to the condition of said camera and different from the photographing scene; and exposure determining means for determining an exposure value based on said plurality of brightness signals, said first information and said second information.
Claim 3
Dependent Claim 41 words
A camera according to claim 1, wherein said exposure determining means has selecting means for selecting a part of said plurality of brightness signals on the basis of said first and said second information and means for calculating the exposure value.
Claim 4
Dependent Claim 42 words
A camera according to claim 1, which further comprises means for detecting an attitude of the camera to produce an attitude signal, wherein said light receiving means selects a part of said plurality of brightness signals in response to said attitude signal.
Claim 5
Dependent Claim 64 words
A camera according to claim 1, wherein said photographing scene setting means is capable of setting a sport scene in which a primary object moves and a portrait scene in which a primary object is almost static, and wherein the number of said selected brightness signals in said sport scene is larger than the number of said selected brightness signals in said portrait scene.
Claim 6
Dependent Claim 30 words
A camera according to claim 4, which further comprises focus detecting means for detecting the focus condition of a photographing lens in response to outputs of said light receiving means.
Claim 7
Dependent Claim 21 words
A camera according to claim 5, wherein said second information is related to a distance from said camera to the object.
Claim 8
Dependent Claim 20 words
A camera according to claim 6, wherein said second information is related to a focal distance of a photographing lens.
Claim 9
Dependent Claim 25 words
A camera according to claim 1, wherein said photographing scene setting means is capable of setting a sport scene in which a primary object moves.
Claim 10
Dependent Claim 26 words
A camera according to claim 1, wherein said photographing scene setting means is capable of setting a portrait scene in which a primary object is static.
Claim 11
Dependent Claim 19 words
A camera according to claim 1, wherein said photographing scene setting means is capable of setting a landscape scene.
Claim 12
Dependent Claim 230 words
A camera comprising: light receiving means for receiving light through a photographing lens form two areas on an object field and generating a plurality of light intensity distribution signals corresponding to said two areas, one of said two areas being extended in a horizontal direction and the other of said two areas being extended in a vertical direction when said camera is held in a horizontal attitude; focus condition detecting means for detecting a focus condition of said photographing lens on the basis of said plurality of light intensity distribution signals; attitude detecting means for detecting an attitude of the camera to produce an attitude signal; photographing scene setting means responsive to an operation by a photographer for setting a photographing scene selected from a plurality of different types of objects that may be photographed and producing first information corresponding to the set photographing scene; photographing condition detecting means responsive to a condition of said camera for producing second information which is related to the condition of said camera and different from the photographing scene; selecting means responsive to said attitude signal for selecting a part of said plurality of light intensity distribution signals corresponding to one of said two areas; and exposure calculating means for calculating an exposure value based on the selected part of said plurality of light intensity distribution signals, said first information and said second information.
Claim 13
Dependent Claim 230 words
A camera comprising: light receiving means for receiving light through a photographing lens form two areas on an object field and generating a plurality of light intensity distribution signals corresponding to said two areas, one of said two areas being extended in a horizontal direction and the other of said two areas being extended in a vertical direction when said camera is held in a horizontal attitude; focus condition detecting means for detecting a focus condition of said photographing lens on the basis of said plurality of light intensity distribution signals; attitude detecting means for detecting an attitude of the camera to produce an attitude signal; photographing scene setting means responsive to an operation by a photographer for setting a photographing scene selected from a plurality of different types of objects that may be photographed and producing first information corresponding to the set photographing scene; photographing condition detecting means responsive to a condition of said camera for producing second information which is related to the condition of said camera and different from the photographing scene; selecting means responsive to said attitude signal for selecting a part of said plurality of light intensity distribution signals corresponding to one of said two areas; and exposure calculating means for calculating an exposure value based on the selected part of said plurality of light intensity distribution signals, said first information and said second information.

References Cited (Backward Citations)

US4075640A Cited
US4364650A Cited
US4445778A Cited
US4534639A Cited
US4774401A Cited
US4972222A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-08-23 1997-02-22 1997-08-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-08-23 2001-02-22 2001-08-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-08-23 2005-02-22 2005-08-24 $7700.00 Window Closed / Lapsed

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