公开(公告)号：US20190253663A1

公开(公告)日：2019-08-15

申请号：US15922261

申请日：2018-03-15

Applicant: CABLE VISION ELECTRONICS CO., LTD

Inventor： Chien-Chung LEE ,  Ching-Po YANG ,  Wen-Ray YU

IPC: H01P5/18 ,  H04N7/10 ,  H03F3/189 ,  H03F3/60 ,  H03H7/01

CPC classification number: H04N7/104 ,  H01B11/1895 ,  H01P5/183 ,  H01P5/185 ,  H01P5/187 ,  H03F3/189 ,  H03F3/60 ,  H03H7/0153

Abstract: A cable television apparatus includes a coupled-line directional coupler. The coupled-line directional coupler includes a coupled-line directional coupler body, an input side, an output side and a coupled side. The coupled-line directional coupler body receives a cable television video-audio-data signal through the input side or the output side. The coupled-line directional coupler body receives a high frequency signal through the input side. A frequency of the high frequency signal is higher than a frequency of the cable television video-audio-data signal. The coupled-line directional coupler body electromagnetically couples the high frequency signal to the coupled side. The coupled-line directional coupler includes a high pass filter function at the coupled side to filter out the cable television video-audio-data signal.