MEMORY CONTROL DEVICE AND MEMORY CONTROL METHOD - MATSUSHITA ELECTRIC IND CO LTD

Title:

MEMORY CONTROL DEVICE AND MEMORY CONTROL METHOD

Document Type and Number:

Japanese Patent JP2003242030

Kind Code:

A

Abstract:

To provide a memory control device which protects important data stored in a memory from unauthorized memory access due to an unadquateness.

This memory control device to control the access to the memory divided into a plurality of areas comprises a specifying means 102 to specify an access destination area to which an access destination of the access belongs based on a request of the access to the memory and to specify an access origin area to which the access origin belongs, and a fudging means 103 to judge that the access is permitted when the access origin area specified by the specifying means is the area predetermined for the area, and the access is not permitted if the access origin area is not a predetermined one. Thereby, the protection of the memory can be realized.

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Inventors:

ITO TAKAYUKI
MAEDA TAKUJI
SO HIROKAZU
INOUE SHINJI

Application Number:

JP2002340025A

Publication Date:

August 29, 2003

Filing Date:

November 22, 2002

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

G06F12/14; G06F21/12; G06F21/60; G06F21/62; (IPC1-7): G06F12/14

Attorney, Agent or Firm:

Nakajima Shiro

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