Break-in detection system

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S565000, C340S552000, C340S578000, C348S152000, C348S143000, C250S221000, C250S216000, C367S136000

Reexamination Certificate

active

07068166

ABSTRACT:
A break-in detection system includes a detection sensor of an FBG type for detecting an intruder trying to climb over a fence around a premises, and a detection sensor of an OTDR type for detecting an intruder trying to demolish the fence. A fiber optic cable used as a detection sensor has a sensor core wire and a LAN transmission core wire arranged in parallel to form a LAN transmission channel. The LAN transmission core wire transmits videotaped image signals from ITV cameras and image control signals two ways between a monitoring room and an ITV control device. The LAN transmission channel is available for connection by IP telephone sets, a LAN terminal, a wireless LAN terminal, and an IP-BOX for internet communication. The system has excellent reliability and maintenance-free characteristics.

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patent: 1 316 933 (2002-11-01), None
patent: 2001-296111 (2001-10-01), None
patent: 8 104 613 (1983-05-01), None
Patent Abstracts of Japan; Publication No. 2001296111; Publication Date: Oct. 26, 2001; Applicant: Hitachi Cable Ltd.

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