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:
Jun. 21, 1994
Filed:
Feb. 07, 1992
Hirohisa Machida, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory device 1 includes a plurality of memory circuits 10. Each of the memory circuits 10 includes a data bit memory cell 11, a sign bit memory cell 12, a converting circuit 13 and a selecting circuit 14. The data bit memory cell 11 stores one bit of binary number data or a data bit of redundant binary number data. The sign bit memory cell 12 stores a digit of a sign bit of redundant binary number data. The converting circuit 13 converts redundant binary number data into binary number data on the basis of the data bit stored in the data bit memory cell and the sign bit stored in the sign bit memory cell 12. The selecting circuit 14 selects the data bit stored in data bit memory cell 11 or the one bit of binary number data outputted by the converting circuit 13.