Patent US8041803 - Method and system for delivering files in digital file marketplace

USOO804l803B2

(12) Ullitfild States Patent (10) Patent N0.: US 8,041,803 B2 Yu et al. (45) Date of Patent: Oct. 18, 2011 (54) METHOD AND SYSTEM FOR DELIVERING 5,848,398 A 12/1998 Martin et al. FILES IN DIGITAL FILE MARKETPLACE 5,855,008 A 12/1998 Goldhaber et al.

5,864,620 A 1/1999 Pettitt

. 5,892,900 A 4/1999 Ginter et al. (75) Inventors: Chee Yu, Dublin, CA (US); Greg 5,982,891 A U/1999 Ginter et 31‘

Gardner, San Francisco, CA (US); 6,009,415 A 12/1999 Shurling et al. Vijay Vaidyanathan, Los Altos Hills, C - d CA (U S); Antonio Dias, Sunnyvale, CA ( Ommue ) ChriSt0Pher As Kitle, Incline Village, NV (US) Robert Bellone, “A Dozen of the Hottest Verticals,” (article), Apr. (73) Assignee: Qurio Holdings, Inc., Raleigh, NC (US) 1996, 10 pages,AccountingTec1mo1ogy, vol. 12, No. 3, p. 29, Boston.

( * ) Notice: Subject to any disclaimer, the term of this (Continued) patent is extended or adjusted under 35 _ _ U_S_C_ 154(1)) by 1750 dayS_ Przmary Examiner — Lan"y Donaghue (74) Attorney, Agent, or Firm — Withrow & Terranova, (21) Appl. No.: 10/159,224 PLLC (22) Filed: May 31, 2002 (57) ABSTRACT _ _ _ A method and system for delivering digital files in a peer-to(65) Pnor Pubhcatlon Data peer network comprising a plurality of nodes includingat US 2003/0061287 A1 1\/[311 27, 2003 least one server is disclosed. The network includes a plurality of files that are available for accessibility by the nodes in Related U.S. Application Data which respective fingerprints are computed for each of the

files based on content of the files. The method and system include partitioning each of the files into a plurality of file chunks, and assigning an error detecting code to each of the

(63) Continuation-in-part of application No. 09/963,812, filed on Sep. 26, 2001.

(51) Int CL chunks. The file is then transmitted to a first node from at least G06F 15/16 (200601) one other node by transmitting the chunks of the file to the (52) U.S. Cl. ....................... .. 709/224~ 709/227~ 709/225 first n°de" The me‘h°d and System funher “Elude °°mP““ng

a new error detecting code upon receipt of each chtmk by the first node, and comparing the new error detecting code to the assigned error detecting code to verify that each chunk has been transmitted correctly, whereby the entire contents of the file does not have to be received before the first node discovers that the file is corrupt. In a firrther embodiment of the present

invention, the method and system include determining the Uisi PATENT DOCUMENTS bandwidth contributed by each node that successfi1llytransmitted a chunk of the file, and paying an owner of each node

(58) Field of Classification Search ................ .. 709/217, 709/224, 225, 227 See application file for complete search history.

(56) References Cited

5,247,575 A 9/1993 Sprague et al. 5,774,654 A 6/1998 Maki

5,794,210 A 8/1998 Goldhaber at al‘ a fee based on the contributed bandwidth.
5,819,092 A 10/1998 Ferguson et al.
5,825,883 A 10/ 1998 Archibald et al. 18 Claims, 8 Drawing Sheets

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