| 发明名称 |
Door or access control system |
| 摘要 |
A door or access control system includes an object detector in which a rising or falling edge in an analogue video signal is detected as indicative of an edge of an object in a field of view.
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| 申请公布号 |
US2004247279(A1) |
申请公布日期 |
2004.12.09 |
| 申请号 |
US20040485044 |
申请日期 |
2004.07.19 |
| 申请人 |
PLATT TERENCE CHRISTOPHER |
发明人 |
PLATT TERENCE CHRISTOPHER |
| 分类号 |
G07C9/00;G08B13/194;(IPC1-7):H04N9/80 |
主分类号 |
G07C9/00 |
| 代理机构 |
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