Electronic data transaction method and electronic data transaction system

An electronic data transaction method for performing electronic data transaction using an operator-side input/output dedicated system in which a plurality of dedicated terminal apparatuses capable of inputting/outputting copyright-protected electronic data thereto/therefrom are networked, the method characterized in that:

• first electronic data is transfer-sold to the input/output dedicated system via/from a dedicated terminal apparatus without allowing the first electronic data to be duplicated and a portion of a first alternative value involved in the data transfer-selling is paid from the operator to the seller;
• and
• the first electronic data is transfer-purchased from the input/output dedicated system via/to the dedicated terminal apparatus without leaving a duplicate of the first electronic data and a second alternative value involved in the data transfer-purchasing is paid from the purchaser to the operator.

An electronic data transaction method for performing electronic data transaction using an operator-side input/output dedicated system connected via a network to a plurality of user terminal apparatuses capable of inputting/outputting copyright-protected electronic data thereto/therefrom, the method characterized in that first electronic data is transfer-sold to the input/output dedicated system via a user terminal apparatus without allowing the first electronic data to be duplicated and a portion of a first alternative value involved in the data transfer-selling is paid from the operator to the seller.

An electronic data transaction method for performing electronic data transaction using an operator-side input/output dedicated system connected via a network to a plurality of user terminal apparatuses capable of inputting/outputting copyright-protected electronic data thereto/therefrom, the method characterized in that:

• first electronic data is transfer-sold to the input/output dedicated system via/from a user terminal apparatus without allowing the first electronic data to be duplicated and a portion of a first alternative value involved in the data transfer-selling is paid from the operator to the seller;
• and
• the first electronic data is transfer-purchased from the input/output dedicated system via/to the user terminal apparatus without leaving a duplicate of the first electronic data and a second alternative value involved in the data transfer-purchasing is paid from the purchaser to the operator.

A program wherein an electronic data sell-transferring step for allowing a computer to execute a data transfer operation for transferring desired copyright-protected electronic data via a terminal apparatus from the seller's memory means to an input/output dedicated system connected to the terminal apparatus via a network is recorded in a readable recording medium.

An electronic data transaction system for performing transaction of copyright-protected electronic data, characterized by comprising:

• electronic data transfer-purchase processing means for performing electronic data transfer-purchase processing via a terminal apparatus so as to transfer-purchase desired electronic data from an operator-side storage section to a purchaser-side storage section via a network;
• and electronic data transfer-sell processing means for performing electronic data transfer-sell processing via the terminal apparatus so as to transfer-sell electronic data desired to be sold from a seller-side storage section to the operator-side storage section via the network.