Patent ID: 8223674
Filing Date: 2012-07-17
Classification: H04L,H04M

Abstract:
1. A signal relay device comprising: a power reception terminal that is coupled to an AC power source, a plurality of connectors containing a plurality of terminal pins for receiving and transmitting a signal such as a packet signal in which the terminal pins are coupled to each other by wire, a power charging unit that is coupled to the power reception terminal by wire and stores a backup power based on an AC power provided from the power reception terminal, the backup power being supplied to wires coupled to a part or all of the plurality of connectors wherein each of the plurality of connectors includes a packet terminal pin that receives or transmits a signal representing a packet, and a residual terminal pin that does not, and the signal relay device further comprises a second switching element which is inserted between the wire coupled to the residual terminal pin of each of the connectors and the wire coupled to the power charging unit, the second switching element switching on or off the individual connection between the residual terminal pin and the power charging unit.