CATV converter for receiving both analog and digital signals

摘要

PCT No. PCT/JP96/01032 Sec. 371 Date Mar. 27, 1997 Sec. 102(e) Date Mar. 27, 1997 PCT Filed Apr. 15, 1996 PCT Pub. No. WO96/32814 PCT Pub. Date Oct. 17, 1996The present invention aims to provide a CATV converter which can receive both of analog and digital signals. The CATV converter comprises a second mixer (10) coupled with a first filter (13) which attenuates approximately equal frequency to an audio carrier of an upper adjacent channel and approximately equal frequency to a video carrier of a lower adjacent channel, a first amplifier (14) coupled with an output terminal of the first filter (13), and a second filter (15) coupled with the output terminal of the first amplifier (14). The second filter (15) attenuates a video carrier of the upper adjacent channel and an audio carrier of the lower adjacent channel. When an input signal is within a predetermined frequency range, the input signal fed to the input terminal (1) can short-circuit the input and output terminals of the second filter with a high frequency of the input signal.