| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for scrambling a signal for limiting the monitor object range of a monitoring person in a device capable of efficiently transmitting and monitoring a monitor image to a distant place while using a communication path. SOLUTION: In the image monitoring system composed of a transmission terminal and a reception terminal connected through the communication path, respective compressed data in plural image pickup devices 1-1 to 1-4 on the side of the transmission terminal are scrambled while using the identification symbols of the respective image pickup devices and respective compressed data in monitor object areas 5 and 6 among plural monitor areas on the side of the transmission terminal are scrambled while using an identification symbol for each monitor area.
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