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:
Feb. 20, 2007
Filed:
Mar. 28, 2001
Leana Golubchik, North Bethesda, MD (US);
William C. Cheng, North Bethesda, MD (US);
Samir Khuller, Burtonsville, MD (US);
Samrat Bhattacharjee, Burtonsville, MD (US);
Cheng-fu Chou, Silver Spring, MD (US);
Leana Golubchik, North Bethesda, MD (US);
William C. Cheng, North Bethesda, MD (US);
Samir Khuller, Burtonsville, MD (US);
Samrat Bhattacharjee, Burtonsville, MD (US);
Cheng-Fu Chou, Silver Spring, MD (US);
University of Maryland, College Park, MD (US);
Abstract
A server/overlay network architecture and related method prevent (i.e., minimize the likelihood of) overloads from many network clients all trying to upload data files to a common destination server on the network at about the same time. Before a client transfers its (his or her) data file to the common network destination, a unique identifier (generally much smaller than the data itself) for the data of that client is generated. The unique identifier, such as a one-way hash function, is transmitted to an authenticator trusted by the common destination. The authenticator time-stamps (i.e., stores time and date) the unique identifier, digitally signs a message incorporating the unique identifier and the time-stamp and sends the message to the client who sent the unique identifier. The client then sends the data file with its time stamp to one of a plurality of upload proxy servers. The proxy server sends a message to the common destination telling it to pick up the data file when ready. The common destination server thus avoids being overloaded by many clients transferring their rather large data files to it at the same time. The common destination server can check the time-stamp and unique identifier to insure that the data has not been altered after the time-stamp.