Analog data signal switching network with means for cross- connecting analog signals to output lines by double-stage sampling

摘要

In a switching network for switchingly and selectively deliver a particular one of a plurality of input channel signals to a specific one of a plurality of ouptut channel lines according to a channel selection signal, the input channel signals are sampled at input channel sample-and- hold circuits by input channel sampling signals to produce sampled signals which are arranged time-serially at a combining circuit to form a combined signal. The combined signal is sampled at output channel sample- and-hold circuits connected to the output channel lines, respectively. An extracting signal is synchronous with a particular one of the input channel sampling signals and is applied to a specific one of the output channel sample-and-hold circuits according to the channel selection signal. The specific sample-and-hold circuit samples the combined signal by the extracting signal and extracts a particular one of the sampled signals corresponding to the particular input channel signal. The particular sampled signal as extracted is passed through a lowpass filter so that the particular input channel signal is reproduced. The reproduced particular input channel signal is delivered to the specific output channel.