Binary transition coder and corresponding decoder - has transition generator for set signal threshold, and clock signal controls bistable sampling and buffer circuit

摘要

The data coding is based on the level transitions occurring between binary signal states. The coding consists of generating a transition when the incoming data signal reaches a given threshold level. Such transitions are inhibited if the signal tends to cause a transition during the preceding time interval defined by 1/F, this being defined by a clock source working at a frequency, F. The clock signal has a form factor of 1/2, is modulated by the transitions and controls a bi-stable sampling and buffer circuit. The coded output is derived from an Exclusive OR circuit.