Invention Grant
- Patent Title: Measuring cable resistance in system for providing power over communication cable
- Patent Title (中): 测量通过电缆提供电力的系统中的电缆电阻
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Application No.: US12527079Application Date: 2007-10-23
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Publication No.: US08552749B2Publication Date: 2013-10-08
- Inventor: Jeffrey Lynn Heath , John Arthur Stineman, Jr. , Steve Robbins
- Applicant: Jeffrey Lynn Heath , John Arthur Stineman, Jr. , Steve Robbins
- Applicant Address: US CA Milpitas
- Assignee: Linear Technology Corporation
- Current Assignee: Linear Technology Corporation
- Current Assignee Address: US CA Milpitas
- Agency: McDermott Will & Emery LLP
- International Application: PCT/US2007/022430 WO 20071023
- International Announcement: WO2008/100294 WO 20080821
- Main IPC: G01R27/08
- IPC: G01R27/08 ; H04B1/16
Abstract:
A system for providing power to a powered device over a communication cable has a cable resistance measuring mechanism that determines values of response signals detected in response to supplying each of at least three reference signals over the communication cable, and determines the resistance of a pair of wires in the cable based on these values. The cable resistance measuring mechanism may be configured for determining resistance of an Ethernet cable that delivers power to the powered device in a Power over Ethernet system.
Public/Granted literature
- US20100141282A1 MEASURING CABLE RESISTANCE IN SYSTEM FOR PROVIDING POWER OVER COMMUNICATION CABLE Public/Granted day:2010-06-10
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