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:
Dec. 23, 1986
Filed:
Dec. 27, 1984
Fujitsu Limited, Kawasaki, JP;
Abstract
An error correcting and detecting system using a parity check H-matrix divided into a plurality of block vectors each including four or three column vectors each having eight elements. In the H-matrix, (i) there are no all '0' vectors; (ii) all column vectors are different from each other; (iii) 8 column vectors each having only one '1' is included therein, (iv) each column vector has an odd number of '1's'; (v) the modulo-2 sum of any three column vectors within any block never equals any column vectors of the H-matrix; (vi) the modulo-2 sum of four column vectors within any block never equals an all '0' vector; and (vii) the modulo-2 sum of eight column vectors within any two blocks never equals an all '0' vector.