Security system using telephone lines to transmit video images to remote supervisory location

摘要

Supervisory alarm transmission and remote alarm receipt devices which, when an emergency event such as a burglar, a fire or the like that is being monitored by a supervisory alarm device takes place, the emergency event is transmitted through telephone lines in order for a remote supervisor to be able to directly watch a spot situation through a monitor, consisting of a supervisory alarm transmission device which comprises an alarm processing control section, a video data processing section and a data transmitting section, and a remote alarm receipt device which comprises a data receipt section, a receipt processing control section and a data processing section. By these arrangements, a user can take an instant countermeasure and the power consumption is minimized in a stand-by state because only the stand-by electric power is supplied to the supervisory alarm transmission device and the remote alarm receipt device until data is received according to event occurrence sensing by each sensing section and to a data transmission indication signal.