The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2006
Filed:
Jun. 01, 2004
Norihiko Shibata, Chigasaki, JP;
Fumiaki Tsuchiya, Ichikawa, JP;
Toshihiro Nozawa, Hitachi, JP;
Shinya Ishi, Hitachi, JP;
Norihiko Shibata, Chigasaki, JP;
Fumiaki Tsuchiya, Ichikawa, JP;
Toshihiro Nozawa, Hitachi, JP;
Shinya Ishi, Hitachi, JP;
Sanki Eng. Co. Ltd., Tokyo, JP;
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.