Method and circuit arrangement to reduce distortions, caused by intelligence, in transmission of pulse code modulated signals

摘要

1,034,515. Data transmission systems; transistor pulse circuits. STANDARD TELEPHONES & CABLES Ltd. March 5, 1965 [March 6, 1964], No. 9449/65. Headings H3T and H4P. To prevent error due to cumulative jitter on a transmission channel comprising a number of repeaters in which the clock signal is derived from the received data, the coding of the signal is changed at some or all of the repeaters, such that a change in the input data change in the input data causes no change in the output, and vice versa.