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. 29, 2018
Filed:
Sep. 23, 2016
Amazon Technologies, Inc., Seattle, WA (US);
Ron Diamant, Albany, CA (US);
Michael Baranchik, Natanya, IL;
Svetlana Kantorovych, Haifa, IL;
Ori Weber, Tel-Aviv, IL;
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
A hardware circuit computes a checksum using a technique such as the Adler-32 checksum algorithm. The hardware circuit may include one or more serially-connected chains of adders followed by a modulus circuit. The modulus circuit produces a modulus value in N, where N is not an integer power of 2. In some examples, N is 65,521. In some examples, the modulus circuit may produce a modulus value modulo 2and then correct that value to modulo N. In other examples, the modulus circuit may include selection logic that selects an appropriate integer multiple of 65,521 to determine the modulo 65,521 result directly.