The displayperiodofperiodicpseudo-pattern in a virtual 2-D plane is dependent on thepulsenumber in a modulation period andthe display plane width, which is proved in this paper in detail.
While it's always hard to pin down the exact origins of an idea -- especially one like pulse-code modulation, where a number of parties were involved -- sifting out the large and significant contributions from the gold pan of history tends to bring up the same names time and again.