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:
Nov. 07, 1995
Filed:
Aug. 12, 1993
Akihiko Hanafusa, Yokohama, JP;
Toshihiko Tada, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
An LSI system in which a plurality of LSIs having different scan systems are provided on an identical printed circuit board. The LSI system includes a common scan data-in terminal commonly provided for the plurality of LSIs on the printed circuit board, and a common scan data-out terminal commonly provided for the plurality of LSIs on the printed circuit board. The plurality of LSIs are classified into a plurality of groups, each group including at least one LSI having an identical scan system. Each LSI has a scan data-in pin and a scan data-out pin. Each group is connected in series or in parallel with each other, by way of the scan data-in pin and the scan data-out pin of the corresponding LSI, between the common scan data-in terminal and the common scan data-out terminal. By the above constitution, it is possible to decrease the number of external terminals to be provided on the printed circuit board for the scan operation. Also, it is possible to systematically take procedures for effecting the scan operation and thereby reduce time for the scan operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile