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:
May. 23, 1989
Filed:
Sep. 08, 1987
Applicant:
Inventor:
Hans J Greub, Troy, NY (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518906 ; 36523005 ;
Abstract
A multiple port memory includes a set of memory units each comprising a set of memory cells, one corresponding to each port. Each cell of a memory unit stores a single data bit and each cell is independently read and write accessed through separate data, address and control busses. The cells of each memory unit are cross-coupled so that when the state of the bit stored by one of the cells of a memory unit is changed when write accessed, the other cells of the memory unit thereafter change the states of their stored bits in the same way.