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:
Jun. 01, 2004
Filed:
Sep. 26, 2001
Yuichiro Morita, Hitachi, JP;
Manabu Jyou, Hitachi, JP;
Yasuhiro Nakatsuka, Tokai, JP;
Tetsuya Shimomura, Hitachi, JP;
Yutaka Okada, Tokyo, JP;
Kazushige Yamagishi, Higashimurayama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A memory controller is disclosed, in which upon receipt of an access request from a device, the memory controller activates a page designated by a row address of a first bank at a predetermined memory cycle, based on the access request. After that, before the read access to a page of the first bank, a second bank next to be accessed is precharged. In the case where a page mishit occurs due to the access from the first bank to the second bank by the graphic processing after the access to the first bank by the read operation, the memory controller activates the second bank immediately without precharging.