发明名称 |
SURVEILLANCE ARRANGEMENTS |
摘要 |
<p>IMPROVEMENTS IN OR RELATING TO SURVEILLANCE ARRANGEMENTS A surveillance system is disclosed comprising a number of infra-red detectors in an array each arranged to view a different portion of a field of view, and a threshold detector provided in the output path of each infra-red detector. Each threshold detector is arranged to have a threshold level which is dependent upon the output signal levels of adjacent detectors in the array.</p> |
申请公布号 |
CA1079394(A) |
申请公布日期 |
1980.06.10 |
申请号 |
CA19760248886 |
申请日期 |
1976.03.26 |
申请人 |
ELLIOTT BROTHERS (LONDON) LIMITED |
发明人 |
CLARK, WILLIAM J.R. |
分类号 |
G01S3/784;(IPC1-7):04N7/02 |
主分类号 |
G01S3/784 |
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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