TELEVISION RECEIVER FOR RECEIVING A PICTURE CARRIER WHOSE AMPLITUDE IS MODULATED WITH A VIDEO SIGNAL, AND A SOUND CARRIER WHOSE FREQUENCY IS MODULATED WITH AN AUDIO SIGNAL

摘要

PHN. 9624 12ABSTRACT:Television receiver for receiving a picturecarrier whose amplitude is modulated with a video signaland a sound carrier whose frequency is modulated with anaudio signal. The sound intercarrier signal produced bya mixing circuit is divided by a detected amplitude-modulated interference wave, a signal of a substantiallyconstant amplitude being thus produced. A limiter prece-ding the frequency demodulator is consequently notrequired.