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. 20, 1977
Filed:
Dec. 13, 1976
Takashi Takezono, Kawasaki, JA;
Hisashige Ando, Kawasaki, JA;
Fujitsu Limited, Kawasaki, JA;
Abstract
An error correcting circuit utilizing a cube circuit for correcting errors in data having n+1 bits in accordance with the syndromes S.sub.1 and S.sub.3 from a check matrix H. The circuit comprises a generator for generating syndromes S.sub.1 and S.sub.3, means for providing (S.sub.1 -a.sub.i) based on the modulo 2 calculation for the i.sub.th line vector ##EQU1## OF THE CHECK MATRIX H corresponding to each data bit d.sub.1, means for multiplying (S.sub.1 -a.sub.i) three times, check means for checking the coincidence between (S.sub.1 -a.sub.i) and (S.sub.3 -a.sub.i.sup.3), and an inverting means for inverting the d.sub.i bit when the coincidence is detected. In the present invention, by utilizing a cube circuit the check circuit can be simplified.