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. 22, 1984
Filed:
Mar. 16, 1982
Volkmar Gotze, Grafenau, DE;
Gunther Potz, Sindelfingen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Each of the check bits of an ECC codeword is generated in parallel in a byte serial sequence to permit structuring of the ECC device so that it has general application. For this purpose a byte wide check bit generator is provided for each of the check bits. These check bit generators contain generalized gating logic controlled by stored data that is capable of passing any combination of the bits making up the byte. As each byte enters such a check bit generator, the data controlling the gating logic is changed to generate a partial sum of the check bit using only those data bits from that data byte designated by the H matrix on the ECC. The partial check bits are then accumulated modulo 2 to generate the check bit to be stored with the data bits.