Pulse insertion circuit

Abstract From the Canadian patent

The pulse insertion circuit comprises a series to parallel converter converting a series of input data to two parallel input data having a half clock frequency by distributing the series data alternately a parallel, type elastic memory writing or reading the two parallel input data synchronously, a delay circuit delaying one of the two parallel input data, a selector selecting two data for two outputs from the two parallel input data and the delayed data, a control circuit stopping a read clock signal of the elastic memory for one clock period and a pulse addition circuit adding a pulse to the parallel data upon receipt of a pulse insertion request signal when the delayed data is selected …