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    • 6. 发明授权
    • Shutter time adjustment for a flash mode and/or film-leader location
    • 闪光模式和/或影片领导者位置的快门时间调整
    • US4302085A
    • 1981-11-24
    • US121653
    • 1980-02-15
    • Kazuyuki KazamiYoshiaki OhtsuboYasunori Kitamura
    • Kazuyuki KazamiYoshiaki OhtsuboYasunori Kitamura
    • G03B7/083G03B7/16G03B15/05G03B17/00G03B17/42G03B7/00G03B9/62
    • G03B7/083
    • In a photographic camera comprising an exposure time control circuit for controlling the shutter speed in response to the brightness of the object and a film frame number indicating device capable of indicating a usable range for frames allowing photographing operation and a non-usable range for frames not allowing photographing operation, wherein the shutter being controlled to a shutter speed independent from the shutter speed determined by said exposure time control circuit when said indicating device indicates said non-usable range, an improvement comprises a second exposure time control circuit for controlling the shutter with a shutter speed suitable for flash photographing and switch means for selecting the shutter speed control by the aforementioned exposure time control circuit or by said second exposure time control circuit in response to the indication of said indicating device in such a manner that the shutter is controlled by the shutter speed determined by said second exposure time control circuit when said indicating device indicates said non-usable range.
    • 在包括曝光时间控制电路的照相机中,该曝光时间控制电路用于响应于物体的亮度来控制快门速度,以及胶片帧号码指示装置,其能够指示允许拍摄操作的帧的可用范围和不允许帧的不可用范围 允许拍摄操作,其中当所述指示装置指示所述不可用范围时,所述快门被控制为独立于由所述曝光时间控制电路确定的快门速度的快门速度,改进包括用于控制所述快门的第二曝光时间控制电路 适用于闪光拍摄的快门速度和用于响应于所述指示装置的指示,由上述曝光时间控制电路或所述第二曝光时间控制电路选择快门速度控制的开关装置,使得快门由 由所述第二exp确定的快门速度 当所述指示装置指示所述不可用范围时,所述时间控制电路。