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:
Aug. 08, 1989
Filed:
Oct. 05, 1987
Applicant:
Inventors:
Robert I Foster, Mesa, AZ (US);
Beth A Longbrake, Cave Creek, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 37 ;
Abstract
A microprocessor based system which implements BCH decoder algorithms in a sufficiently efficient manner to allow real time BCH decoding of a BCH(255,131) code is disclosed. Table lookup operations utilizing successive M-bit serial portions of BCH encoded input data as table offsets permit the microprocessor to generate syndrome using M-bit parallel portions of the input data. Additional table lookup operations which utilize tables stored in ROM memory speed execution time of multiply operations and detection of roots for inverse error location polynomials.