Patent ID: 9201894
Filing Date: 2015-12-01
Classification: G06F

Abstract:
1. A data distribution system comprising a distribution device comprising at least one non-transitory, computer readable recording medium for holding a computer data file which is a distribution object, the computer data file being divisible into a plurality of file pieces, and at least one but less than all of the file pieces being a restricted piece, where the at least one restricted piece is restricted in terms of where the at least one restricted piece may be obtained on the network, and the computer data file is unusable without the at least one restricted piece, and a plurality of user terminals, wherein each of the user terminals comprises at least one computer processor and at least one non-transitory, computer readable recording medium for implementing: (i) a file piece obtaining unit configured to obtain any of the plurality of file pieces from the distribution device, and any of the plurality of file pieces, except the at least one restricted piece, from any of the other user terminals over the network; and (ii) a file obtaining unit configured to assemble the plurality of file pieces obtained to thereby obtain the computer data file, wherein the distribution device restricts distribution of the at least one restricted piece to each of the user terminals, based on a predetermined condition such that the at least one restricted piece may only be obtained by the user terminals from the distribution device over the network.