Parallel Chien search circuit
US6192497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/158
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a Chien search circuit for determining roots to an error locator polynomial that is defined by a set of coefficients. The circuit includes N sub-Chien search circuits, each of which is configured to sequentially evaluate a subset of field elements from a specified set of field elements. Each sub-Chien search circuit includes a set of storage elements, a set of constant multipliers, an adder, and a comparator. The set of storage elements stores a set of values, and receives and stores the set of coefficients as the set of values. One storage element is associated with each coefficient. The set of constant multipliers is coupled to receive the set of values from the set of storage elements. One constant multiplier is associated with one storage element. Each of the constant multipliers is associated with a constant field element and is configured to multiply the received value and the constant field element to generate a product. Each of the constant multipliers is coupled to feed the product back to the associated storage element for storage. The adder is coupled to receive the stored set of values from the set of storage elements for generating a sum of the set of valu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.