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:
Dec. 12, 2006
Filed:
Sep. 26, 2003
Toshiaki Minami, Kanagawa, JP;
Toshiaki Minami, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A memory controller reads data from DRAM at a request from a plurality of masters. It includes a prefetch buffer for storing a result of a pre-reading operation, and a register for setting a specific master among a plurality of masters. When a master requests a read, the memory controller pre-reads data subsequent to the requested data, and determines whether or not the master is a specific master set by the register. If the master is the specific master set by the register, then the result of the pre-read is stored in the prefetch buffer. Thus, the prefetch buffer can effectively function in a system having a plurality of masters.
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