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:
Sep. 16, 1986
Filed:
Jul. 27, 1984
Applicant:
Inventor:
Brian K Rosier, Jenkintown, PA (US);
Assignee:
Harris Corporation, Melbourne, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365201 ; 371 21 ;
Abstract
A circuitry and method of testing programmable, variable threshold memory cells by applying a variable voltage above a normal read voltage to the control gate of a high threshold cell to determine the actual high threshold value and applying zero voltage to the control gate of a low threshold cell to determine if the low threshold is of the opposite polarity of the high threshold.