| 摘要 |
PURPOSE:To eliminate the need for a delay circuit and to attain high integration with reduction of number of component parts, by using an adder to perform processing so as to obtain coincidence of phase between a specific angle frequency signal separated with a separation route of the angle frequency signal and another specific angle freqency signal contained in a main signal. CONSTITUTION:A reproduced luminance signal, i.e., a wide band signal is supplied to an input terminal 21 and then to an input terminal of one side of an adder 22 as well as to an HPF24. The HPF24 consists of a capacitor C1 and a resistance R1, and the output of the HPF24 is supplied to a differential amplifier 25 via a coupling capacitor C2. The signals g1 and g2 delivered from the amplifier 25 are supplied to a limiter 26, and the output of the limiter 26 is applied to the other input terminal of the adder 22 via a phase inverter 23. Then the output of the adder 22 is led out to an output terminal 23. |
