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:
Feb. 10, 1987
Filed:
Dec. 27, 1984
Applicant:
Inventors:
Noriyuki Honma, Kokubunji, JP;
Hiroaki Nambu, Hachioji, JP;
Isao Yoshida, Nishitama, JP;
Hisayuki Higuchi, Kokubunji, JP;
Kunihiko Yamaguchi, Sayama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; G11C / ;
U.S. Cl.
CPC ...
307463 ; 307443 ; 307446 ; 307475 ; 365230 ;
Abstract
This invention is effective in the speeding up of a decoder circuit and maintenance of output amplitude. The invention is characterized in that, in a decoder circuit composed of a multi-emitter transistor or at least one diode group in which the anodes of a plurality of diodes are connected, and a charge circuit having an output emitter follower transistor, the multi-emitter transistor or the forward voltage of the diodes are larger than the voltage between the base and the emitter of the output emitter follower transistor.