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:
Apr. 16, 2002
Filed:
Feb. 26, 1999
Shinji Kitabayashi, Yokohama, JP;
Kazutaka Nogami, Ichikawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An adder comprises: a comparator circuit for comparing values of n input signals, each of which comprises 1-bit data, with first to n-th predetermined values which are different from each other; a non-volatile memory having first to n+1-th word lines, m (2 ≧n+1) bit lines which are provided so as to intersect the word lines, and memory cells, each of which is provided at an intersection of each of the word lines and each of the bit lines and each of which has stored 1-bit data; and a selector circuit for selecting one of the n+1 word lines on the basis of n comparison results of the comparator circuit to activate the selected word line. Thus, a plurality of bits are added at high speed.