Patent ID: 7289581

Claim:
A receiving apparatus comprising: at least one variable gain amplifier; at least one level detection circuit, which detects at least one level output from said at least one variable gain amplifier; at least one comparing circuit for comparing at least one reference level to said at least one output from said at least one level detection circuit; at least one demodulator; at least one binarizing circuit; at least one slice level holding circuit holding at least one substantially constant value at least one slice level employed by said at least one binarizing circuit; and at least one counter circuit; wherein at least one gain of said at least one variable gain amplifier is switched based on at least one result of comparison by said at least one comparing circuit; and wherein, when said at least one gain is switched, said at least one counter circuit and said at least one slice level holding circuit cause said at least one slice level to be held at said at least one substantially constant value for at least one prescribed time.