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. 25, 1986
Filed:
Sep. 27, 1983
Fumio Baba, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A dual port type semiconductor memory using a dynamic type random access memory (RAM) includes; a plurality of word lines, a plurality of pairs of bit lines, and a dynamic type RAM connected at each intersection of the word lines and the bit lines. The semiconductor memory further includes a first column decoder connected to a writing-reading out bus through a pair of gates (G.sub.1) including two transistors directly connected to each of the bit lines, and a second column decoder connected to a reading out bus through a pair of gates (G.sub.2) including four transistors. Gates of two of the four transistors of the second pair of gates are connected to each bit line. The other two of the four transistors are connected to the reading out bus.