Invention Grant
- Patent Title: Network loop monitor
- Patent Title (中): 网络环路监控
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Application No.: US10596717Application Date: 2004-12-21
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Publication No.: US07693080B2Publication Date: 2010-04-06
- Inventor: David Denoon-Stevens , Neels Paul De Villiers
- Applicant: David Denoon-Stevens , Neels Paul De Villiers
- Applicant Address: US FL Bradenton
- Assignee: GE Security, Inc.
- Current Assignee: GE Security, Inc.
- Current Assignee Address: US FL Bradenton
- Agency: Global Patent Operation
- Agent Jonathan E. Thomas
- Priority: ZA2003/9885 20031222
- International Application: PCT/ZA2004/000159 WO 20041221
- International Announcement: WO2005/069537 WO 20050728
- Main IPC: H04J1/16
- IPC: H04J1/16
Abstract:
A network loop monitor (10) is disclosed which comprises an RS485 port (16) for connection to a host which receives and transmits data. The port (16) comprises termination jumpers (14), a transmitter/receiver (34) and an isolator (36). The monitor (10) includes two further RS485 ports (18, 20) each of which has a termination (26, 28), a transmitter/receiver (42, 44) and an isolator (38, 40). A relay (22) controls contacts (24) in the line pair (12). Router logic (32) controlled by a microprocessor (30) determines the status of the loop monitor.
Public/Granted literature
- US20070140136A1 Network loop monitor Public/Granted day:2007-06-21
Information query
