Multiplex communications – Wide area network – Packet switching
Patent
1994-03-14
1995-09-05
Beausoliel, Jr., Robert W.
Multiplex communications
Wide area network
Packet switching
340827, 39518202, G06F 1100, H04J 116, H04J 314, H04B 338
Patent
active
054485720
ABSTRACT:
An apparatus and method for increasing the mean time between failure for computer systems is disclosed. A single spare line can be used to replace any of several signal lines. Using 2:1 multiplexers, defective signal lines can easily be switched to a nonoperative state and the remaining signal lines shifted to provide for replacement of the defective line without significant path length increase or signal time delay. The invention is applicable to signal paths of different varieties, including electrical, electro-optical and fluidic.
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Knox Lonnie A.
Rickard Dale A.
Beausoliel, Jr. Robert W.
International Business Machines - Corporation
Redmond Joseph C.
Vales Phillip F.
Wurm M. A.
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