221224 ⎘
Automatic frequency control; Automatic scanning over a band of frequencies; Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant Modification of automatic frequency control sensitivity or linearising automatic frequency control operation; Modification of the working range
Hybrid AFC using DCXO and RF PLL
#2LINEARIZED VARIABLE-CAPACITANCE MODULE AND LC RESONANCE CIRCUIT USING THE SAME
#3Signal processing circuit for tuner which applies signal processing based on variation in frequency of intermediate frequency signal