Unlock instant, AI-driven research and patent intelligence for your innovation.

Terminal apparatus of recording medium with copyright protective function

A technology for recording media and terminal equipment, applied in the field of management servers, can solve problems such as incorrectly generating binding IDs, unable to reproduce content, and unsatisfactory problems

Inactive Publication Date: 2004-04-21
KK TOSHIBA
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes a problem that, for example, when a terminal device breaks down or buys a new terminal device, the device ID is changed, and therefore, the binding ID cannot be correctly generated, so that the content cannot be reproduced
For battery powered devices such as mobile phones or PDAs, this problem is far from ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Terminal apparatus of recording medium with copyright protective function
  • Terminal apparatus of recording medium with copyright protective function
  • Terminal apparatus of recording medium with copyright protective function

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0031] In the first embodiment of the present invention, the binding ID composed of the medium ID and additional IDs such as device ID, user ID, etc. is encrypted with the medium ID, and the encrypted binding ID is stored in the memory card. Then, when the binding ID or the additional ID changes, the content is decrypted with the binding ID stored in the memory card. The decrypted content is re-encrypted with the changed binding ID, and the re-encrypted content is stored in the memory card again.

[0032] figure 1 is a block diagram showing the circuit configuration of the terminal apparatus PA according to the first embodiment.

[0033] The terminal apparatus PA includes a CPU 11a employing, for example, a microprocessor. RAM 12 , ROM 13 , network interface 14 , decoder 15 , display section 16 and memory interface 17 are connected to CPU 11 a via bus 10 .

[0034] The content server CSV is connected to the network interface 14 through the network NW. Under the control of ...

no. 2 example

[0081] In the second embodiment of the present invention, when transferring content from one terminal device to another in a content management system capable of connecting a plurality of terminal devices to a management server through a network, the sender's terminal device will be The binding ID composed of the medium ID and the additional ID is transmitted to the management server, and the server is made to store the binding ID. Then, the recipient's terminal device not only obtains the binding ID used by the terminal device before transmitting and decrypting the content from the management server, but also encrypts the content with a new binding ID after the transmission and re-records the encrypted content.

[0082] Figure 9 is a block diagram showing the structure of the content management system according to the second embodiment.

[0083] exist Figure 9 Among them, a plurality of terminal devices PA1, PA2 can be connected to the content server CSV and the managemen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Binding information used to encrypt a first encryption key for encrypting content is encrypted on the basis of a second encryption key and the encrypted binding information is stored in a recording medium. At the same time, the second encryption key is encrypted on the basis of first unique information specifying the recording medium and the encrypted second encryption key is stored in the recording medium. On the other hand, when the encrypted content is reproduced from the recording medium, the encrypted second encryption key is decrypted on the basis of the first unique information. On the basis of the decrypted second encryption key, the encrypted binding information is decrypted. Using the decrypted binding information or the first encryption key decrypted on the basis of the binding information, the encrypted content is decrypted.

Description

technical field [0001] The present invention relates to a terminal device capable of recording or reproducing content using a recording medium having a copyright protection function. [0002] The present invention also relates to a content management system capable of managing content through a network and a management server used for the system. Background technique [0003] In recent years, more and more digital terminal equipment, including personal computers, mobile phones, PDAs (Personal Digital Assistants), audio players or electronic cameras, etc., have been equipped with to reproduce the function of the content. In addition, more and more recording media for this type of terminal equipment have a copyright protection function. These techniques have been disclosed in, for example, Japanese Patent Application KOKAI Publication No. 2001-23353, Japanese Patent Application KOKAI Publication No. 2001-22647, or Japanese Patent Application KOKAI Publication No. 2001-67267....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F12/14G06F15/00G06F21/10G06F21/34G06F21/44G06F21/60G06F21/62G09C1/00G11B20/00H04L9/14H04L29/06
CPCH04L63/045G06F21/602G06F21/10H04L63/0869G06F2221/2129G06F2221/2107
Inventor 佐藤顺寺内亨
Owner KK TOSHIBA