The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 09, 2019

Filed:

Mar. 09, 2017
Applicant:

Nec Corporation, Tokyo, JP;

Inventor:

Satoru Nagase, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/46 (2006.01); G06F 9/50 (2006.01); G06F 11/30 (2006.01); G06F 11/34 (2006.01);
U.S. Cl.
CPC ...
G06F 9/5016 (2013.01); G06F 9/505 (2013.01); G06F 9/5083 (2013.01); G06F 11/3024 (2013.01); G06F 11/3037 (2013.01); G06F 11/3433 (2013.01); G06F 2201/88 (2013.01);
Abstract

A memory access control device includes: an in-process number calculating unit that calculates an in-process number, which is a number of in-process load requests, at a predetermined time to a memory network; a reply number calculating unit that calculates a number of replies of the load requests received in a predetermined period from the predetermined time; an issuance number limitation unit that calculates an issuance limit value of the load requests in the predetermined period; an update determination unit that decides the issuance limit value regarding a next period on a base of the in-process number, the number of replies, and the issuance limit value in the predetermined period; and a hold determination unit that outputs a hold instruction of the load requests to a request pipeline connected to the memory network when the in-process number is larger than the issuance limit value regarding the next period.


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