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:
Mar. 22, 1988
Filed:
Aug. 06, 1986
Hiroaki Nanbu, Hachioji, JP;
Kunihiko Yamaguchi, Sayama, JP;
Noriyuki Honma, Kokubunji, JP;
Kazuo Kanetani, Kokubunji, JP;
Motoaki Matumoto, Kokubunji, JP;
Kazuhiko Tani, Kokubunji, JP;
Kenichi Ohata, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Device Eng., Tokyo, JP;
Abstract
Herein disclosed is a bipolar memory having redundancy, which can be produced with a small area. In this semiconductor memory having a body memory for storing data and a spare memory for relief of fault bit of the body memory, a row is selected by cutting fuses in a decoder. Fundamentally signal lines such as word lines are not provided with fuses. Other parts including a power source and a reference voltage source are provided with fuses without decreasing the operating speed accompanied by only a slight increase in the area.