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:
Sep. 27, 2011
Filed:
Jun. 28, 2002
Kevin P. Kleinfelter, Atlanta, GA (US);
Kim Littrell, Marietta, GA (US);
Kevin P. Kleinfelter, Atlanta, GA (US);
Kim Littrell, Marietta, GA (US);
AT&T Intellectual Property I. L.P., Atlanta, GA (US);
Abstract
To reduce Domain Name System (DNS) lookup traffic in a computer data network, a client computer requests a DNS lookup. A router or other means then sends the request for a hostname of a web server to a DNS server and receives a corresponding IP address. Next, the router forwards the request to the web server. In response, the web server sends an HTML document. Upon receiving the HTML document, the router examines the document for URLs and sends one DNS lookup request for each of the distinct hostnames, regardless of how many times that distinct hostname appears in the HTML document. The router receives IP addresses, each of which corresponds to one of each of the distinct hostnames and modifies the HTML document by replacing the each of the distinct hostnames, including recurrences, in the URLs associated with the image elements with their corresponding IP addresses.