Abstract: In a demodulator the signal to be demodulated is applied to the information inputs of a shift register by way of a circuit, for example an RS flip-flop, which extends the signal duration and makes it possible to scan the signal with the shift register. The signal outputs of the shift register control two signal inputs of a second flip-flop by way of logic gates. The circuits required for constructing the demodulator can all be provided, without difficulty, in monolithic semiconductor technology and can be integrated with other circuits on a common semiconductor chip.

Abstract: An electronic system for the transmission of binary coded pulse information is comprised of a transmitter and a receiver. The transmitter is provided with circuitry for the generation of a pre-signal pulse which is produced upon the actuation of respective command inputs. The pre-signal pulse is combined with and transmitted a fixed period ahead of the pulses representing the command information. The receiver is provided with a pre-amplifier stage having an inherently fixed response time, such that receipt of the pre-signal pulse prepares the pre-amplifier for handling of the coded information without a loss of information resulting from distortion during the initial response time of the pre-amplifier.