Patent ID: 7635927
Filing Date: 2009-12-22
Classification: H01L,H04L,Y10S

Abstract:
1. A method for operating a relay switch connected between a first data port and a second data port and receiving a power supply voltage signal, the method comprising: measuring the voltage level of the power supply voltage signal; measuring an energy level of incoming signals on either one of the first and second data ports; opening the relay switch to isolate the first and second data ports when the voltage level of the power supply voltage signal is greater than a predetermined supply voltage threshold level; opening the relay switch to isolate the first and second data ports when the voltage level of the power supply voltage signal is equal to or below the predetermined supply voltage threshold level and the energy level of the incoming signals on either one of the first and second data ports is greater than a predetermined energy threshold level; and closing the relay switch to electrically connect the first and second data ports when the voltage level of the power supply voltage signal is equal to or below the predetermined supply voltage threshold level and the energy level of the incoming signals on either one of the first and second data ports is less than or equal to the predetermined energy threshold level.