Separation and combination method for frequency channels of cable TV

Application Number: 00107180
Application Date: 2000.05.12
Publication Number: 1274241
Publication Date: 2000.11.22
Priority Information:
International: H04N7/18
Applicant(s) Name: Urumqi Petro-Chemical General Plant, China Petro-Chemical Group
Inventor(s) Name: Chang Li
Patent Agency Code: 65100
Patent Agent: tang jianwu
Abstract A separation-combination method of frequency bands for cable TV features that the high-pass or low-pass filter is used to process the full-range RF signals from large-scale cable TV station to middle-or small-scale ones to obtain needed remainder frequency band signals, and the remainder frequency band signals are mixed with the RF signals modulated by middle- or small-scale cable TV station in RF mixer to obtain mixed frequency band signals, which are transmitted over the transmission network of middle- or small-scale cable TV station. Its advantages include less investment and multi-channel insertion broadcast.