| 摘要 |
PURPOSE: A composite video circuit of a television for eliminating high frequency band noise in component video signal is provided to improve definition performance and eliminate ring-back and color mixing phenomenon of the component video signal. CONSTITUTION: A tuner(31) changes high frequency signal into intermediate frequency signal. A demodulator integrated circuit(32) demodulates signal transformed in the tuner. A sound trap circuit(33) eliminates the sound signal from the video signal demodulated in the demodulation integrated circuit. A video buffer(34) buffs the component video signal from which the sound signal is removed. A trap filter(35) eliminates the high frequency band noise in the component video signal outputted from the demodulation integrated circuit. |
