Importance

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Abstract

A data sending/receiving system with which a data user receives data provided through a data provider by a data receiving apparatus via one of a computer network line and a broadcasting, has a construction where a provider that provides data via a broadcasting, broadcasts (i) as to a data provided via a broadcasting, information about a broadcast channel and a broadcast time of the data related to its identifier, as additional information, and (ii) as to a data provided via a computer network line, a description of a location of the data related to the identifier, on a computer network; and a provider that provides data via a computer network line sends on a computer network line (iii) as to a data provided via a computer network line, a description of a location of the data related to its identifier on a computer network line, and (vi) as to a data provided via a broadcasting, information about the provider of the data. Thus data users can obtain data efficiently by utilizing a plurality of transfer media differ in type, and data providers can utilize transfer media efficiently.

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First Claim