Apparatus and method for protecting from illegal copy

Details Apparatus and method for protecting from illegal copy Apparatus and method for protecting from illegal copy

2007-08-28

2007-08-28

Le, Don (Department: 2819)

Electronic digital logic circuitry

Security

C326S038000, C713S100000

Reexamination Certificate

active

11290396

ABSTRACT:
A copy protection circuit to prevent illegal copy of a circuit configuration data when the user circuit data is read out and transferred from a storage device to a rewritable gate array (FPGA), includes a control circuit, a data generating circuit and a data switch circuit. The control circuit controls transfer of the circuit configuration data from the storage device to the FPGA, and the data generating circuit generates pseudo circuit configuration data. The data switch circuit transfers to the FPGA, the circuit configuration data read out from the storage circuit and the pseudo circuit configuration data outputted from the data generating circuit. The data switch circuit transfers to the FPGA the circuit configuration data which is less than a data amount that the FPGA needs, and then the pseudo circuit configuration data.

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patent: 2001-325153 (2001-11-01), None
patent: 2003-84853 (2003-03-01), None

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