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:
Jun. 18, 2013
Filed:
Jun. 02, 2011
Donald C. Kirkpatrick, Beaverton, OR (US);
Donald C. Kirkpatrick, Beaverton, OR (US);
Nexus Technology, Inc., Nashua, NH (US);
Abstract
Apparatus and methods for generating checksums may process two or more segments of a message in parallel, and may be used with a communications channel having time slots. An apparatus may include a cumulative checksum generator to generate a cumulative checksum for a message, a partial checksum generator to generate one or more partial checksums from one or more respective message segments, and a speculative checksum generator to generate a speculative checksum for each of one or more time slots. In one aspect, a partial checksum corresponding with an initial segment of the message may be generated from at least an initialization vector. A speculative checksum selector may select a first speculative checksum for use in determining whether the message was transmitted without error. The generating of partial and speculative checksums results in a maximally pipe-lined architecture with speed limited only by a minimal cumulative CRC calculation that is fundamentally unavoidable.