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:
May. 06, 1986
Filed:
Jul. 12, 1983
Applicant:
Inventors:
Shinji Emori, Urawa, JP;
Yoshio Watanabe, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307355 ; 307356 ; 307359 ; 307443 ; 307455 ; 330261 ;
Abstract
A variable-threshold-type differential signal receiver comprises a differential amplifier for comparing differential voltages of differential input signals with a predetermined threshold voltage so as to provide logical output signals. It further comprises an emitter follower and an impedance means, the output of the emitter follower being superimposed through the impedance means on one of the differential input signals, whereby the predetermined threshold voltage is variably controlled by controlling the input voltage of the first emitter follower.