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:
Oct. 06, 1992
Filed:
Mar. 29, 1990
Applicant:
Inventors:
Terry L Lyon, Roseville, MN (US);
Jeff Chritz, Vancouver, WA (US);
Assignees:
National Semiconductor Corporation, Santa Clara, CA (US);
Control Data Corporation, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 223 ; 371 211 ;
Abstract
A scan diagnostics apparatus and method is useful in connection with the memory integrated circuit. A shift register is provided which can receive data in parallel from the input register and output the data serially. The shift register can receive serial data and output in parallel either to the input buffer or the output buffer. Preferably the shift register can receive in parallel, data from the output buffer and output the data serially.