Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-05-02
2006-05-02
Bragdon, Reginald G. (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S152000, C710S022000
Reexamination Certificate
active
07039779
ABSTRACT:
An access violation of the program is monitored by the access monitor which is a hardware. The access monitor acquires a signal input from the CPU to a memory. The access monitor includes an access permission table as information of the memory region to be permitted to each program, and detects the access violation of the signal from the CPU by referring thereto. In this manner, the unjust access is monitored by the hardware, thereby preventing the unjust access by rewriting in software.
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Hashimoto Shigeru
Kawasaki Yusuke
Shiobara Tomomi
Yamamoto Koken
Yanagi Ryoichi
Armstrong, Kratz, Quintos Hanson & Brooks, LLP.
Bragdon Reginald G.
Fujitsu Limited
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