Patent ID: 6661252
Filing Date: 2003-12-09
Classification: H04Q

Abstract:
A matrix switch device comprising a 2Ã—2 matrix switch having two input terminals and two output terminals;said matrix switch device further comprising an SPDT (Single Pole Double Throw) switch arranged at a stage subsequent to said 2Ã—2 matrix switch, said SPDT switch having two input terminals and one output terminal; said 2Ã—2 matrix switch and said SPDT switch being structured in a semiconductor integrated circuit chip so as to unite with each other; one of said output terminals of said 2Ã—2 matrix switch and one of said input terminals of said SPDT switch are electrically connected with each other; both of said input terminals of the 2Ã—2 matrix switch, the other of said output terminals of the 2Ã—2 matrix switch, the other of said input terminals of said SPDT switch, and said output terminal of said SPDT switch being led out of said semiconductor integrated circuit chip.