Circuits for comparing several input signals and for indicating the result of

Official title: {Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)}

G01R23/005 (Circuits for comparing several input signals and for indicating the result of) appears on 116 US grants and 82 published applications in this corpus.