Memory unit comprising a memory and a protection unit

Details Memory unit comprising a memory and a protection unit Memory unit comprising a memory and a protection unit

G - Physics

06

F

354/243

G06F 12/14 (2006.01) G06F 1/00 (2006.01) G06F 13/00 (2006.01) G06F 21/00 (2006.01) H04L 9/00 (2006.01)

Patent

CA 1213070

ABSTRACT: In order to protect against illegal copying program words, which are stored in a memory (12), a memory unit (10) is provided with a protection unit (24) in addition to memory (12). The protection unit enables modification of the content of the program words which belong to a predetermined group before they are out- putted out the memory. The program words which belong to that predetermined group are program words which have a data word comprising an address part for addressing a further program word.

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