establishment of the torment of the fernsehinterferenzschwundes.

摘要

A television fading interference-cancelling apparatus (100) includes two sets of TV antennas (11; 12), a subtracter (14), and adder (13), a variable gain/phase controller (16; 17; 18) and digital fading cancelling means (20; 30; 40; 50). The digital fading cancelling means includes at least a fading signal component remover (30) and a maximum value detector (40). The fading signal component remover (30) receives a subtraction signal ( DELTA ) from the subtracter (13) and digitally averages this signal ( DELTA ) to remove the fading signal components contained therein. Then the maximum value detector (40) detects a frequency signal having a maximum value by selecting the digitally averaged signals. This frequency signal is used in the variable gain/phase controller (16; 17; 18) to control the gain and phase shift of a desired TV signal without having adverse influences by the fading interference signals.