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:
May. 19, 1992
Filed:
Aug. 29, 1989
Applicant:
Inventors:
Masamori Kashiyama, Hadano, JP;
Koichi Ishii, Hadano, JP;
Shun Kawabe, Machida, JP;
Masami Usami, Ome, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395425 ; 3642318 ; 3642319 ; 36423221 ; 364247 ; 364243 ; 364270 ; 3642543 ; 364271 ; 36493151 ; 36496426 ; 36496429 ; 364934 ; 3649343 ; 364736 ; 364D / ; 364D / ;
Abstract
Vector registers having logically equal address are arranged as two banks which can independently access ultra high speed RAM's. One bank holds all even-numbered elements of vector data and the other bank holds all odd-numbered elements of the vector data. A write address generator and a read address generator which are one half as fast as a clock rate of a machine cycle and which have a phase difference of one half period therebetween are provided so that the clock rate of the machine cycle may be set to one half of a total time of a write pitch and a read pitch of the vector registers.