JPS56134826A - Binary circuit - Google Patents

Abstract

PURPOSE:To convert the analogue signal to a binary surely independently of the amplitude of the input waveform, by using the potential of the positive envelope waveform as the steady state potential of the negative envelope circuit and by using the potential of the negative envelope waveform as the steady state potential of the positive envelope circuit and by forming envelope waveforms on the basis of potentials of positive and negative waveforms opposite to each other. CONSTITUTION:Analogue signal (a) is amplified by amplifying circuit 1 and is inputted to envelope circuits 2A and 2B and comparator 4. Positive and negative steady state potential circuits 5A and 5B are provided in succeeding stages of envelope circuits 2A and 2B respectively, and outputs of steady state potential circuits are inputted to positive and negative envelope circuits in opposite sides of each other, and envelope waveforms are formed on the basis of outputs of steady state potential circuits in opposite sides of each other and are outputted to slice level generating circuit 3. Slice level generating circuit 3 detects middle points of positive and negative envelopes and inputs them to comparator circuit 4 as slice levels, and analogue signal (a) is compared with these slice levels by circuit 4, and digital output (b) is outputted.