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. 21, 1989
Filed:
Aug. 29, 1988
Applicant:
Inventors:
Tomotaka Saito, Yokohama, JP;
Hiroaki Murakami, Yokohama, JP;
Yuhji Fukushima, Tokyo, JP;
Masami Konishi, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307303 ; 307243 ; 328104 ; 357 40 ;
Abstract
At least first and second IC-chip equivalent regions having functions available from conventional one-chip IC device are formed on a single semiconductor substrate. An output of the second region is supplied to an input terminal of the first region. The output of the second region is also delivered at an external terminal in response to a test signal through a multiplexer or a bidirectional buffer.