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:
Mar. 12, 1991
Filed:
May. 16, 1990
Applicant:
Inventor:
Masayuki Hirokawa, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 364228 ; 3642283 ; 3642285 ; 364229 ; 3642392 ; 3642399 ; 3642433 ; 3642448 ; 3642446 ;
Abstract
A data transfer control unit for completing data transfer between two systems using data transfer interfaces equipped with a controller, a serial I/O interface, and a dual port RAM. The controller is dedicated to controlling interfacing between the system and an outside source. Writing data from the outside source into the dual port memory is indicated by an internal flag. When this flag is set, it indicates that data has been loaded and needs to be moved to the system RAM.
Hirokawa, Masayuki. (1991). Data transfer control units each of which comprises processors and (U.S. Patent No. 4999768). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4999768
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