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:
Nov. 17, 2009
Filed:
Nov. 01, 2005
Carl A. Bender, Highland, NY (US);
Fu Chung Chang, Rhinebeck, NY (US);
Kevin J. Gildea, Bloomington, NY (US);
Rama J. Govindaraju, Hopewell Junction, NY (US);
Jay R. Herring, Hyde Park, NY (US);
Peter H. Hochschild, New York, NY (US);
Richard A. Swetz, Mahopac, NY (US);
Carl A. Bender, Highland, NY (US);
Fu Chung Chang, Rhinebeck, NY (US);
Kevin J. Gildea, Bloomington, NY (US);
Rama J. Govindaraju, Hopewell Junction, NY (US);
Jay R. Herring, Hyde Park, NY (US);
Peter H. Hochschild, New York, NY (US);
Richard A. Swetz, Mahopac, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In order to solve the problem of the detection of the arrival of duplicate data packets in an interconnected, multinode data processing system, each data packet is provided with a field of r bits that are randomly generated for each data packet. However, one of the packets is provided with a field that is computed from the other randomly generated field entries in a checksum computation which yields a selected nonzero checksum value. A running checksum at the receiver is used to determine whether or not, after the receipt of the specified number, k, of data packets, a duplicate packet has been received.