Bidirectional signal transmission network and bidirectional signal transfer shift register

摘要

A bidirectional signal transfer shift register with a simple circuit construction is disclosed together with suitable applications of the same. The bidirectional signal transfer shift register comprises a plurality of flipflops each having an input terminal and an output terminal in pair. The input and output terminals of the flipflops are connected successively in such a manner as to construct a multi-stage structure. A forward route gate element is interposed in a connection route between the output terminal of the front stage side one of each two adjacent front and rear ones of the flipflops and the input terminal of the rear stage side flipflop, and a reverse route gate element is interposed in another connection route between the output terminal of the rear stage side flipflop and the input terminal of the front stage side flipflop. Forward direction signal transmission processing and reverse direction signal transmission processing can be switchably selected by alternatively controlling the forward and reverse route gate elements to open or close.