Method and apparatus for protecting internal memory from...

Details Method and apparatus for protecting internal memory from... Method and apparatus for protecting internal memory from...

2007-10-16

2007-10-16

Thai, Tuan V. (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S100000, C711S103000, C711S154000

Reexamination Certificate

active

09901918

ABSTRACT:
Method and apparatus for protecting internal memory from external access. A method for protecting a memory space from external access is provided. A plurality of lock bits are stored in a location in memory, each associated with a separate logical portion of the memory space and determinative as to the access thereof for a predetermined operation thereon. a request is then detected for access to a location in the memory space for operating thereon. The requested operation is then compared with the associated lock bit in the associated logical portion and then it is determined if access is allowed for the requested operation. If allowed, the requested operation is performed.

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