US Patent 7801737 Data distributing system and data recording method

A data distributing system wherein an electronic book data storage center which is stored with a plurality of pieces of book data is capable of communicating with electronic book vending machines 2 via a communication line and/or a communication satellite. In each of the vending machines, a storage medium can be inserted. The vending machine selects a piece of book data, which may be desired by the user, based on data stored in the storage medium as data to be to recorded into the storage medium. The user himself or herself can select a piece of book data. Also, the recorded data can be deleted from the storage medium in compliance with the user's request. These vending machines may have a function of casting accounts.