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. 17, 1994
Filed:
Feb. 22, 1991
Applicant:
Inventor:
Takeji Tokumaru, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395425 ; 364D / ; 3642445 ; 3642595 ; 3642387 ;
Abstract
A DMA controller for supporting a data transfer operation between a first memory and a second memory includes a selector for selecting data stored in the first memory per data unit, a shifting circuit for shifting the data selected by the selector to one direction of required numbers, a F/F (flip-flop) for storing the data shifted by the shifting circuit for every data unit, a feedback circuit for feedback of the stored data by the F/F to the shifting circuit, and a transfer circuit for transferring the data stored in the F/F to the second memory.