发明名称 |
Camera with data exposure function |
摘要 |
This invention provides a camera with a data exposure function comprising: a dot LED; a film winding mechanism provided with a film feeding motor; a film winding operation detecting portion for outputting a motor pulse signal corresponding to a rotation of the film feeding motor; a perforation detecting portion for detecting a perforation to output a perforation signal; and a main microcomputer for determining a lighting interval pulse by counting the number of motor pulses during detection of plural perforations, calculating a correction time corresponding to a decimal portion of the lighting interval pulse with reference to the period of a motor pulse signal and controlling a lighting interval of the dot LED based on an integer portion of the lighting interval pulse and the correction time.
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申请公布号 |
US6477331(B2) |
申请公布日期 |
2002.11.05 |
申请号 |
US20010767116 |
申请日期 |
2001.01.22 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
MATSUO NAOKI |
分类号 |
G03B17/00;G03B17/24;(IPC1-7):G03B17/24 |
主分类号 |
G03B17/00 |
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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