Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2007-07-10
2007-07-10
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S008000, C326S037000, C326S038000, C326S039000, C326S040000, C326S041000, C326S047000, C380S287000
Reexamination Certificate
active
11002577
ABSTRACT:
Techniques for reducing the frequency of an output signal from a hard intellectual property (HIP) block on an integrated circuit are provided. By reducing the frequency of the output signal, circuit blocks in the integrated circuit that operate at a lower frequency than the HIP block are able to capture the output signal. A plurality of serially coupled flip-flops store values of an HIP output signal during each period of the output signal. Logic circuitry then generates a lower frequency HIP output signal in response to the values stored in the flip-flops. Also, a flip-flop can generate a heartbeat signal that is used to determine whether a signal within an HIP block is operating properly.
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van Wageningen Darren
Wortman Curt
Altera Corporation
Barnie Rexford
Townsend and Townsend / and Crew LLP
White Dylan
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