Patent ID: 7408753
Filing Date: 2008-08-05
Classification: H02H,H04B

Abstract:
1. A partially surge-protecting hub for communicating networking signals over power lines, comprising: a housing; a plurality of connectors mounted on said housing and electrically connected to an alternating-current power source for independently establishing connections to power lines for power transmission or network lines for networking signal transmission, wherein two of said connectors are used for establishing connections to the power line and the network line of a computer respectively; and a partially surge-protecting device disposed in said housing and arranged upstream of said plurality of connectors for partially filtering out surge signals that are received from said alternating-current power source while allowing networking signals having a frequency range lying in the frequency range of said surge signals to pass therethrough, wherein said partially surge-protecting device comprises a low-pass filter and a band-pass filter; at least one telephone jack mounted on said housing for establishing a connection to a telephone line or network line; and an asymmetric digital subscriber line (ADSL) filter disposed in said housing and electrically connected to said telephone jack for partially filtering out high-frequency signals transmitted in said telephone line.