| 摘要 |
A system for continuously scanning an area for surveillance purposes with one or more television cameras by the controlled movement of the scanning means, and recording the resultant video signals for future analysis or monitoring. The scanning may be effected at video motion picture frequency or at a slow scan rate continuously or intermittently at predetermined time intervals. Provision is made for the automatic analysis of the scanning signals and the generation of alarm signals when unusual phenomena occur and change same.
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