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:
Jun. 09, 1987
Filed:
Jan. 08, 1986
Applicant:
Inventor:
Masahisa Nemoto, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307350 ; 307354 ; 307358 ;
Abstract
A signal detecting circuit includes a first source follower having an input connected to a first voltage source, and a second source follower having an input connected to a second voltage source. There is provided an additional field effect transistor having a gate connected to the input of the second source follower, a source which is connected through a resistor to an output of the first source follower. The source of the additional field effect transistor is connected to a signal input terminal and one input of a voltage comparator whose other input is connected to an output of the second source follower.