VSB RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide a VSB receiver with which high speed conversion in time required until a convergence processing end in an AGC circuit and a clock reproducing circuit is made to be compatible with high performance conversion in ghost interference removal and correct clock reproduction. SOLUTION: The loop gain of an AGC circuit and that of a clock reproducing circuit 6 are increased, until a synchronizing signal (a segment synchronizing signal or a field synchronizing signal) is detected (the gain of an amplifier is increased or the range of a loop filter is made wide). Then, the loop gain of the AGC circuit 7 and that of the clock reproducing circuit 6 are made to be small (the gain of the amplifier is reduced or the band of the loop filter narrowed).