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. 25, 2002
Filed:
Apr. 14, 1999
Balakrishna Raghunath, San Jose, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method and apparatus that improves the efficiency of outbound data management for information transmitted over a communication network protocol by eliminating unnecessary operations related to the checksum when associated data has not changed since the last determination of the checksum. Overall computer system costs are reduced by eliminating checksum functionality on computer networking cards and thereby minimizing overall checksum functionality requirements in the computer system. The checksum that is derived on the first instance of data transmittal is cached. Thereafter, on subsequent transmissions of the data, the cached checksum may be re-used. Further, partial checksums can be calculated for portions of data that will be transmitted. The partial checksums may be combined to create a checksum that represents the aggregate of the data that will be transmitted.