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, 1987
Filed:
Feb. 10, 1984
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 25 ; 371 27 ;
Abstract
A scanning control apparatus operates to scan-in arbitrary data to data storage elements such as registers, flip-flops and memory devices in an information processing system, and also scan-out data held in the data storage elements. The data storage elements are provided with physical scanning addresses determined in accordance with the arrangement of packaging, and further provided with logical scanning addresses. In the scanning operation for storage elements, a logical scanning address is given, and the scanning control apparatus transforms the logical scanning address into physical scanning addresses, by which storage elements rendered scan-in or scan-out are selected.