Data reproducing method and apparatus, and data processing system

Abstract

A data recording medium is provided on which digital data including work data such as a music tune or an image is recorded in a data recording area, and on which identification information enabling identification proper to the recording medium is recorded in an identification information recording area while discrimination information indicating the presence / absence of the identification information is recorded in a lead-in area. The location of the digital data recorded on the recording medium is managed in accordance with the identification information for carrying out identification proper to the recording medium recorded on the recording medium, thus realizing multiple use of the work data such as duplication for a plurality of times.

Description

technical field [0001] The present invention relates to a data recording medium which records digital data including copyright data such as music, and records identification information which enables unique identification of the recording medium, and a method for reproducing the copyright data recorded on the data recording medium and a device, and further relates to a data processing system for managing duplication of works recorded on a data recording medium. Background technique [0002] Compact disks (CDs) are widely used as disk-shaped recording media, which can convert and record audio data such as music, which is author data, into digital data, and read the data by an optical playback device. A CD is a recording medium with a diameter of 12cm that can record data of more than 600MB. In this CD, digital data is recorded in accordance with a standardized recording format. Based on the standard recording format of CDs, CD-ROMs that record data processed by a computer o...

AI Technical Summary

Problems solved by technology

Furthermore, it is very difficult to manage when only the recording medium is handed over to others alone.

[0007] In addition, once the packaging medium widely distributed in the past is sold to the user, the user can freely use the copyright data recorded on the recording medium, but there are restrictions on repeated copying of the data read from the recording medium.

Therefore, users who have purchased packaged media are restricted from further supplying to other users via data distribution systems such as the Internet

[0008] Furthermore, as a method of distributing copyright data of materials such as music, EMD (Electronic Music Distribution) is used as a method using the Internet. Free use of author data, but restrictions on repeated distribution or duplication of once distributed data

Images