Method and device for managing contents

Abstract

The invention provides a method and a device for managing contents. In the method and the device, an encryption content and an encryption key thereof which are used for inhibiting duplication of using conditions serving as copyright in the device having received the contents are stored, and the encryption key is transmitted through network so that the encryption content is stored into a piece of equipment when the encryption content is duplicated and transmitted between the device and other equipment through network. The device is provided with an access token which is used for controlling the reproduction of the broadcast content according to each broadcast content under the condition of performing video storage on a high-precision television broadcast signal which is received by setting copy once as the using conditions of the copyright. When the initial broadcast content code is converted into a low resolution code and is transmitted to other equipment, the access token becomes valid and can be reproduced.

Description

[0001] This application is a divisional application based on the invention patent application titled "Content Management Program, Method and Device", the filing date is August 26, 2004, and the application number is 200480043869.9. technical field [0002] The present invention relates to a content management program, method, and device in a pervasive environment that manages content to which users have access rights based on copyright, and particularly relates to a content management program that can transfer content between multiple devices and use it at the same time , method and device. Background technique [0003] Currently, various contents such as music, videos, and documents are digitized. However, due to digitization, the copying of contents becomes easy, and illegal copying is a particularly serious problem. [0004] If illegal copies that infringe copyrights flood the market, not only distribution operators and copyright holders will suffer losses, but consumers ...

AI Technical Summary

Problems solved by technology

[0014] However, the content received and recorded in HDTV (High Definition Television) resolution on a hard disk drive, etc. is copied once by the first recording, and copy protection is applied, and it is transcoded to 320×240 pixels for viewing on a portable terminal. When the low resolution of QVGA (QuarteViedo Graphic Arry) is transferred to a memory card such as an SD card at one time, the original HDTV content is eliminated during transfer

Therefore, even if the QVGA content of the memory card is returned to the hard disk drive later, the original HDTV resolution cannot be reproduced, and the playback content of the HDTV resolution that has been protected by one copy will be lost, and there is a problem that it cannot be reproduced again.

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