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:
Jan. 12, 1988
Filed:
Dec. 31, 1984
Bunichi Fujita, Hatano, JP;
Seiichi Kawashima, Hatano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An ordinary differential type gate circuit has two transistors to which complementary inputs are given and which are turned on and off, and complementary type outputs in accordance with the states of the complementary inputs are generated from the collectors of those transistors. In this invention, there are further added a fixed threshold type gate circuit to which is inputted a control signal and a circuit which, when the control signal is inputted to this fixed threshold type gate circuit, generates complementary outputs in constant states irrespective of the states of the complementary inputs in response to the state of the control signal, thereby preventing the inputs applied to the differential type gate circuit from being reflected to the outputs.