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:
Apr. 04, 1989
Filed:
Jun. 25, 1987
Applicant:
Inventor:
Katsuaki Takagi, Higashimurayama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G06F / ;
U.S. Cl.
CPC ...
365230 ; 364200 ;
Abstract
An address information line of a microprocessor informs a memory management unit of such address information that a current address is identical to an address before one bus-cycle or two bus-cycles or is a new address. Since the address information line has a light load, the address information is transmitted at high speed. In addition, if the current address is identical to the address before one or several bus-cycles, address conversion within the memory management unit can be quickened in such a way that these addresses are temporarily stored in the memory management unit, whereupon the corresponding address is read out.