Data processing: generic control systems or specific application – Generic control system – apparatus or process – Having protection or reliability feature
Reexamination Certificate
2005-06-14
2005-06-14
Voeltz, Emanuel Todd (Department: 2121)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Having protection or reliability feature
C710S302000, C713S600000, C714S006130
Reexamination Certificate
active
06907303
ABSTRACT:
There is provided a switching circuit for unit duplication boards designated as a working board and a protection board. In each duplication board, a software block is maintained reset at an initial hardware operation and determines the activation or deactivation state of a board according to a software command received from a central processing unit (CPU), a hardware block monitors a clock signal received from the other board using a system clock signal for the board and determines a time point when the system clock is to be activated according to the monitoring result, and a hardware board state block determines the working or protection state of the board in hardware terms, reflecting the states of the board and the other board during hardware operation. One of the unit duplication boards is automatically set to a working mode at an initial hardware operation, for hardware switching.
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Bushnell , Esq. Robert E.
Samsung Electronics Co,. Ltd.
Todd Voeltz Emanuel
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