Error location system
CA 1315403 C · Owner: Digital Equipment Corporation · Inventors: Weng, Lih-Jyh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is an error correcting system which calculates the error locations, that is finds the roots of, the error locator equation: 1 + ?1*x + ?2*x2 + ?1x3 + ... + ?v-i*xv-i + ?v*xv = 0 (1) where "+" and "*" represent Galois Field addition and Galois Field multiplication, respectively, and "v" is the number of errors in the data by substituting the error location equation coefficients into a succession of v error location formulas along with successive values of x to determine if the various x's are roots of equation (1). When the first root is found, extraction of the root corresponds to reducing the degree of equation (1) by one to (v-1), and, also to reducing the number of error …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.