Patent ID: 6771845
Filing Date: 2004-08-03
Classification: H04B,H05K

Abstract:
A fault-tolerant system, comprising:a first circuit board removably inserted within a first receptor of a backplane, the first circuit board having a first, second, and third light receivers affixed to its bottom surface; a second circuit board removably inserted within a second receptor of the backplane, the second circuit board having a first and second light transmitters affixed to its top surface, the second circuit board having an aperture therein, and having a fourth and fifth light receivers affixed to its bottom surface; and a third circuit board removably inserted within a third receptor of the backplane, the third circuit board having a third, fourth, and fifth light transmitters affixed to its top surface, wherein a detected change in transmission intensity of a faulted data signal automatically initiates an orderly shutdown and rerouting of the faulted data signal.