Adjustable reversible telecommunication code signal converter

Claim 1

An adjustable telecommunication signal converter operable firstly to convert a single pulse input signal received thereat into a complex signal comprising a succession of signal elements delivered over a group of conductors, each element including one or more pulses applied respectively to one or more conductors of the group selected in dependence on an adjustment of the converter, and secondly to convert a complex signal received at the converter into a single pulse output signal if the conductors of the group to which the pulses of the elements of the receivEd signal are applied correspond in respect of each element to the conductors selected in dependence on the adjustment to which the converter has been adjusted, which adjustable tele-communication converter comprises: adjustment means adjustable to determine said adjustment and to select in respect of each pulse of an element of a complex signal delivered by the converter a conductor of the group to which a pulse is applied; delivery gates repeatedly and selectively operable on the receipt of a single pulse input signal to deliver at each operation an element of a complex signal whose pulses are applied to conductors selected in dependence on the adjustment of the adjustment means; correspondence gates operable to generate a correspondence signal in response to each element of a received complex signal if the pulses included in an element are applied to conductors which correspond to conductors selected in dependence on the adjustment of the adjustment means; and a stepping train having a number of steps equal to the number of elements in a complex signal, the stepping train advancing one step in response to a correspondence signal and achieving the final step only if a correspondence signal is generated in respect of each element of a received complex signal, a single output pulse signal being delivered when the stepping train achieves the final step.