Communication device and auxiliary device for communication

摘要

A surveillance system utilizing a plurality of communication devices that are operative with portable telephones to permit an easily reconfigurable remote surveillance area. The portable telephones can have audio and imaging transmitting functions and at least one has an audio and imaging receiving function. An image sensor can sense images within a predetermined area and is operatively connected to a portable telephone for providing an output signal upon detection of a predetermined amount of change in the image area. An auto-dialing section is connected to a first telephone for calling a second remote telephone automatically based on the output signal. Infrared detecting sensors can also image within the surveillance area and be utilized to activate the auto-dialing function. The portable telephones can further include an image sensor for providing an image of the surveillance area.