发明名称 |
Device for indicating a remaining quantity of recordable parts of a recording material in a camera |
摘要 |
A device for indicating a remaining quantity of the recordable portion of a recording material, such as a magnetic disk or film. The indicating device comprises a counting device which counts a remaining recordable quantity of recording material, and a warning device which outputs a warning when the reamining recordable quantity is low. The warning device is provided with an acoustic alarm device for outputting a vocal or electronic sound corresponding to the remaining quantity or an optical alarm device for outputting light indicating the value of the remaining recordable portions, or corresponding to the remaining quantity. The optical alarm mechanism is provided in such a manner that the warning light can be observed in the viewfinder of the camera.
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申请公布号 |
US5049911(A) |
申请公布日期 |
1991.09.17 |
申请号 |
US19890418272 |
申请日期 |
1989.10.06 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
SHIMIZU, HITOSHI |
分类号 |
H04N5/781;G03B1/60;G03B7/24;G03B17/18;G03B17/36;G11B27/34;H04N5/225;H04N5/765 |
主分类号 |
H04N5/781 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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