Patent ID: 7657944
Filing Date: 2010-02-02
Classification: H04L

Abstract:
1. A data distribution system, comprising a data distribution apparatus, provided with storage means in which data is stored, for distributing data stored in said storage means, and a data acquisition apparatus for acquiring the data distributed from said data distribution apparatus, wherein said data distribution apparatus comprises means for storing condition information indicating distribution conditions for respective data stored in said storage means, wherein said condition information includes a distribution format for the respective data so as to limit use of the data at a time when the respective data stored in said storage means is distributed, the distribution format being determined for the respective data in correspondence to each of multiple authentication methods for user authentication or a combination of the multiple authentication methods, said data acquisition apparatus comprises receiving means for receiving an authentication information of a user and a request for data distribution, and means for transmitting the authentication information and the request for data distribution received by said receiving means to said data distribution apparatus, and said data distribution apparatus comprises authenticating means for authenticating the user using the authentication method selected from among the multiple authentication methods and corresponding to the authentication information received from said data acquisition apparatus, selecting means for selecting the distribution format of the data which is determined in said condition information in correspondence to the authentication method used by said authenticating means for said data designated in the request for data distribution received from said data acquisition apparatus, and means for transmitting the data in the distribution format selected by said selecting means to said data acquisition apparatus in the case that the user is authenticated by said authenticating means.