Switching Networks of Planar Shifting Arrays
R. S. Krupp, L. A. Tomko · Bell System Technical Journal · 1973
An array of shift registers that may operate in two orthogonal directions can be called a planar shifting array. This article shows how two basic building blocks, fashioned from planar shifting arrays, may be interconnected to form a time-division switching network of arbitrary size. The characteristics of magnetic bubble and charge-coupled devices are compatible with the concept of planar arrays, and it is in these emerging technologies that switching networks of planar shifting arrays may become practical.