| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser security system which can easily discriminate a regular attendance and an illegal intruder by irradiating a suspicious person with a laser beam obtained by encoding information. SOLUTION: The system is provided with a monitoring camera 12 which images a security zone, a laser transmitter 11 irradiating the suspicious person who is imaged by the monitoring camera 12 with the laser beam obtained by encoding information, laser beam receivers 16 and 17 receiving the laser beams irradiated from the laser transmitter 11 and converting it into an electric signal, a signal processing circuit 19 which applies data processing to code information of the electric signal converted by the laser beam receivers 16 and 17, a radio transmitter 20 transmitting a data signal which is subjected to the data processing by the signal processing circuit 19 and a radio receiver 13 receiving the data signal transmitted from the radio transmitter 20. COPYRIGHT: (C)2004,JPO
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