Patent
Hot extraction and insertion of logic boards in an on-line communication system
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TLDR
In this article, a real-time, high uptime transaction processing system includes many user terminals communicating with service providers via a communications network and a defective logic board is replaced or a board providing system expansion is installed without powering down the system by providing external auxiliary voltages and a reset signal to the board to put it in a passive state while it is being plugged into or unplugged from its backplane connector.Abstract:
A real-time, high uptime transaction processing system includes many user terminals communicating with service providers via a communications network. A defective logic board is replaced or a board providing system expansion is installed without powering down the system by providing external auxiliary voltages and a reset signal to the board to put it in a passive state while it is being plugged into or unplugged from its backplane connector. Also under computer control the system is made inactive for a short period of time.read more
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References
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Patent
Method and apparatus for controlled removal and insertion of circuit modules
Hanz Werner Herrig,David Nicholas Horn,Daniel Vern Peters,Randy Dean Pfeifer,Wayne Richard Wilcox +4 more
TL;DR: In this article, a latch actuated switch provides a control signal in anticipation of circuit board removal, which activates a finite state machine which seizes control of the bus after completion of any current bus communications and stops the generation of clock pulses normally required in bus communications.
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