Digital switcher for routing signals

Abstract From the Canadian patent

A digital switcher routes signals at rates up to or more than 300 MHz between switcher inputs and outputs. The switcher includes an array of n rows and m columns of modules linking n groups of switcher inputs and m groups of switcher outputs. Each module consists of a primary switching unit for selectively coupling individual ones of its outputs to ones of its inputs and a number of individually-controllable, regenerative two-input, selector switches. The primary and selector switches are controlled by a controller. The selector switch outputs form the module outputs. Each selector switch has an input connected to an associated output of the primary switching unit in the same module, and …