Title:
ACCESS CONTROL DEVICE AND ACCESS CONTROL METHOD
Document Type and Number:
Japanese Patent JP2014211662
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an access control device capable of preventing unconformity of the attribute by controlling the timing to switch over the attribute under execution in a CPU and a peripheral circuit.SOLUTION: The access control device includes: an attribute storage that stores the attribute which is under execution by a CPU; an access control section that receives an access command to a device from the CPU and the peripheral circuit and determines whether the access should be permitted; a status acquisition section that acquires the state of the access command from the peripheral circuit to the device; and an update control section that, when switching over the attribute which is under execution by the CPU, determines the timing to switch over the attribute under execution according to the state of the access command acquired by the status acquisition section and updates the attribute of the attribute storage at the determined timing to switch over the attribute under execution, and that determines the attribute under execution as the timing to switch over when there is no access command waiting for processing.
Inventors:
KOGA AKIO
IMANAKA TAKAAKI
OYAMA TAKASHI
IMANAKA TAKAAKI
OYAMA TAKASHI
Application Number:
JP2011190310A
Publication Date:
November 13, 2014
Filing Date:
September 01, 2011
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
G06F21/60; G06F12/14; G06F13/18; G06F21/62
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Fujii Kentaro
Daisuke Nagano
Fujii Kentaro
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