METHOD AND DEVICE FOR PROTECTING PART OF MEMORY

摘要

PROBLEM TO BE SOLVED: To prevent data saved in a memory from being destroyed owing to an error of an application program by providing a visible part and a hidden part for a memory in a computer system and using the hidden part to save data to be transmitted. SOLUTION: An operating system(OS) 4 can be addressed to the visual part 30 of the memory. The addressing possibility of the process or OS 4 is excluded from the hidden part 60 of the memory. The hidden part 60 is used to save data to be transmitted by the processor or OS 4. A communication area arranged at the visible part 30 receives a data access request from the processor or OS 4. A hide server 70 which addresses both the visible part 30 and hidden part 60 receives the data access request from the communication area and starts data access to the hidden part 60.