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. 31, 2006
Filed:
Jul. 28, 2000
Tadayuki Sakakibara, Kamakura, JP;
Isao Ohara, Hadano, JP;
Hideya Akashi, Kunitachi, JP;
Yuji Tsushima, Hadano, JP;
Satoshi Muraoka, Yokohama, JP;
Tadayuki Sakakibara, Kamakura, JP;
Isao Ohara, Hadano, JP;
Hideya Akashi, Kunitachi, JP;
Yuji Tsushima, Hadano, JP;
Satoshi Muraoka, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A cache data control system and method for a computer system in which in a memory read processing, a coherent controller issues an advanced speculative read request for (speculatively) reading data from a cache data section in advance to a cache data controller, before reading a cache tag from a cache tag section and conducting cache hit check. If a cache hit has occurred, the cache data controller returns the data subjected to speculative reading as response data, at the time when the cache data controller has received a read request issued by the coherent controller.