Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system
Reexamination Certificate
2005-07-05
2005-07-05
Jones, Hugh (Department: 2128)
Data processing: structural design, modeling, simulation, and em
Simulating nonelectrical device or system
C716S030000, C713S189000
Reexamination Certificate
active
06915247
ABSTRACT:
The objective of the invention is to be able to switch between execution and cancellation of copy protection at any time in a simplified structure. The switching circuit24is provided within the gate array unit16in the signal path between the scan-path interface circuit18and the terminal pin for the emulation. The DSP10accesses the switching circuit24through the internal bus, logic interface circuit26, and the logic bus, and can write the intended switch control information to the register within the switching circuit24. The switching circuit24selectively switches the signal path between the interrupted state and the conductive state according to the switch control information given by the DSP10, and selectively switches the scan-path interface circuit18between the enabled state and the disabled state.
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Brady III W. James
Jones Hugh
Kempler William B.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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