Dual receiver edge-triggered digital signal level detection system

A level detection system receiving two input signals to indicate one or another logic state of the first input signal at the transition of the second input signal from an inactive state to an active state, the system comprising:

• A. a first signal receiver having a first input receiving the first input signal, and a second input receiving the second input signal, the first signal receiver having an output producing an output signal of one logic state while the second input signal is inactive and an output signal of the same logic state as the first input signal While the second input signal is active;
• B. a second signal receiver having a first input receiving the first input signal, and a second input receiving the second input signal, the second signal receiver having an output producing an output signal of another logic state while the second input signal is inactive and an output signal of the same logic state as the first input signal while the second input signal is active;
• and
• C. combinational logic receiving the output signals from the two receivers and producing at least one indicate signal of the same logic state as the first input signal in response to a change in logic state in one of the outputs from the receivers.