CATV TRANSFER EQUIPMENT

PURPOSE:To simultaneously change the scramble format of a scrambler of CATV system and a TAG signal by scrambling a video signal with the scramble control data decoded by a data decoder. CONSTITUTION:A video scrambler 18 scrambles a video signal '1' transmitted from a video source 19 according to a scramble control data signal 'k' from a data decoder 17, this video scramble signal 'm', a clamp signal 'n', and a key signal 'p' are transmitted to a TV modulator, and the modulator 20 converts it to a television signal 'q' of a specified CATV channel to be transmitted through a mixing device 15 to a transmission path. The scramble format of a data wave detector 16 and the device 17 and the scramble format of a scrambler 18 can be changed simultaneously with scramble format change of satellite channel, and the change of a TAG signal is simultaneously controlled.