Data protective microprocessor circuit for portable data carrier

Details Data protective microprocessor circuit for portable data carrier Data protective microprocessor circuit for portable data carrier

1996-01-24

1997-02-04

Coleman, Eric

Boots, shoes, and leggings

364264, 3642645, 3642592, 3642864, 364DIG1, 395800, 395493, G06F 124

Patent

active

056008180

ABSTRACT:
A data protective microprocessor circuit for preventing access to data or programs stored in memories, includes a microprocessor, a memory for storing an operating system, at least one memory with an individual secondary program, a circuit for monitoring a particular valid address and generating a first signal, a circuit for monitoring particular contents of a microprocessor program counter and generating a second signal, and a circuit for generating an inhibit signal based on said first and second signals.

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