Patent ID: 6897686

Claim:
A pulse detector comprising: input means for inputting an input signal pulse; leading edge detector means connected to the input means for detecting a leading edge of a first input signal pulse; trailing edge detector means connected to the input means for detecting a trailing edge of the first input signal pulse; first timing means, clocked by a clock signal, connected to the leading edge detector means and to the trailing edge detector means for determining a pulse duration time between detection of the leading edge and detection of the trailing edge; divisor means connected to the timing means for dividing the pulse duration time to produce a divided pulse duration time; second timing means connected to the divisor means for outputting a pulse narrower than the input signal pulse the divided pulse duration time after detection of the leading edge of a second input pulse representative of a mid-point of the second input signal pulse; and combining means connected to the second timing means and to the input means for combining the pulse narrower than the input signal pulse with the clock signal to provide an output pulse in synchronisation with the midpoint of the second input signal pulse.