Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2007-06-26
2007-06-26
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S038000, C713S189000
Reexamination Certificate
active
10949481
ABSTRACT:
Methods and system for achieving improved copyright protection for programmable logic devices are disclosed. One preferred embodiment comprises a programmable logic device comprising a programmable element programmed by a mutated programming pattern, said mutated programming pattern causing the PLD to generate a mutated output; and a circuit element that translates the mutated output into a normal output.
REFERENCES:
patent: 5745734 (1998-04-01), Craft et al.
patent: 6366117 (2002-04-01), Pang et al.
patent: 2003/0068038 (2003-04-01), Hanounik
Altera Corporation
Chang Daniel
Townsend and Townsend / and Crew LLP
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