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.
Patent No.:
Date of Patent:
Jan. 14, 2014
Filed:
Jan. 14, 2011
Takahiro Wakasa, Shiojiri, JP;
Takahiro Wakasa, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An electronic device includes a memory control circuit that controls a DRAM, and the memory control circuit performs: a first distributed refresh process for issuing refresh commands to the DRAM at a predetermined interval so that storage elements of which the DRAM is configured are refreshed at least once in a predetermined period Ts; a concentrated refresh process for issuing, triggered by a predetermined request to the DRAM, a predetermined number of times Nc of the refresh commands in a burst at an interval that is shorter than the predetermined interval; and a second distributed refresh process for, when the predetermined number of times Nc of refresh commands have been issued, calculating a refresh interval Tr for refreshing remaining storage elements that have not yet been refreshed in the predetermined period Ts and issues refresh commands at the calculated refresh interval Tr.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile