Patent ID: 7505733
Filing Date: 2009-03-17
Classification: H01Q

Abstract:
1. A broadcast signal receiver to which a multi-directional antenna having a plurality of signal receiving directions is connected through an antenna controller for controlling the multi-directional antenna comprising: a tuner circuit for receiving broadcast signal through the multi-directional antenna and the antenna controller; a demodulation circuit for demodulating received broadcast signal; a power supply circuit for supplying electric power to at least the tuner circuit and the demodulation circuit; a control unit for control each department of the broadcast signal receiver; a coaxial connector to which a first coaxial cable used for connecting between the antenna controller and the broadcast signal receiver is connected; and an over current interruption switch provided between the coaxial connector and the tuner circuit for interrupting an over current flowing toward the tuner circuit, thereby when a second coaxial cable used for connecting between the antenna controller and the multi-directional antenna is erroneously connected to the coaxial connector and a drive voltage used for switching the effective signal receiving direction of the multi-directional antenna is applied to the coaxial connector, the over current due to the drive voltage is interrupted by the over current interruption switch so that the tuner circuit is protected from the over current.