Appeal No. 1999-0261
Application No. 08/703,496
for preventing data corruption caused by a device connection
transition on an active data communication bus. A shutdown
signal is transmitted from a bus initiator over the bus to a
power controller while bus communication is paused permitting
communication only by the bus initiator. After a connection
transition of an electrical device in the device slot
corresponding to the received shutdown signal, power is
restored to the device slot after receipt of a power reset
signal transmitted from the bus initiator. Communication on
the data bus by all peripherals is again permitted after
release of the data bus from the pause condition by the bus
initiator.
Claim 1 is illustrative of the invention and reads as
follows:
1. A method of device connection transition on an
active data communication bus, said method
comprising the steps of:
pausing communication on the data communication
bus such that only communication by a first
electrical device is allowed over the data
communication bus;
following said pausing of communication on said
data communication bus, transmitting a shutdown
2
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