Information processing device, information processing method, and computer program

An information processing device, information processing method technology, applied in recording signal processing, secure communication device, protection of internal/peripheral computer components, etc., can solve the problem of elevation, unauthorized use leakage, content, key information and other secret information Leakage and other problems, to achieve the effect of preventing external leakage

Inactive Publication Date: 2007-06-06
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, when data is to be transferred between a drive and a host, there is a problem that leakage of content, key information, and other secret information may occur, with the result that the possibility of unauthorized use and leakage of content increases
Problems can also occur as encrypted content of legitimate records is read and converted to plain text and copied by user-created software

Method used

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  • Information processing device, information processing method, and computer program
  • Information processing device, information processing method, and computer program
  • Information processing device, information processing method, and computer program

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Embodiment Construction

[0069] A description will be given below of an information processing apparatus, an information processing method, and a computer program according to the present invention by referring to the drawings. The description is given in accordance with the following items.

[0070] 1. Outline of processing as defined by CPRM

[0071] 2. Configuration for processing including content transfer between drive and host according to the present invention

[0072] 3. Configuration of information processing device

[0073] [1. Outline of processing defined by CPRM]

[0074] In order to facilitate understanding of the present invention, referring to FIG. 1 , an architecture for Content Protection for Recordable Media (CPRM), which is known as a copyright protection technology supporting media (information recording media) such as DVD, will be described.

[0075] There are two types of processing for reproducing / recording content from / to a medium (information recording medium): One type of...

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PUM

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Abstract

A structure for preventing information leakage and content false processing during content utilization involving data transfer between different devices. During content reproduction or recording involving data transfer between different device such as a drive and a host, a medium ID (disk ID) used for encrypting or decrypting a content is read out of a medium, and the drive checks if the medium ID is recorded according to a header code preset for the authenticated medium. If it is confirmed that the medium is an authenticated one, the drive encrypts the medium ID and output it to a host. With this, leakage to the outside of a medium ID and reproduction or recording of a content using a false medium can be prevented.

Description

technical field [0001] The present invention relates to an information processing device, an information processing method, and a computer program. More specifically, the present invention relates to an information processing apparatus having a configuration preventing unauthorized use of content, an information processing method used therewith, and a computer program used therewith. Background technique [0002] In recent years, information recording media capable of storing large amounts of data, such as DVDs or Blu-ray discs (Blu-ray discs), have become popular. For example, digital content such as high-precision image data or high-quality audio data recorded on or reproduced from a recording medium such as a disc has come into common use. [0003] According to the digital recording device and recording medium, images and audios can be repeatedly recorded and reproduced without lowering their quality. Therefore, the distribution of illegally copied contents via the Inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G09C1/00G11B20/10H04L9/32G06F21/62G11B20/12G11B27/00H04N5/91
CPCG06F21/80G11B20/00086G11B20/0021G11B20/00528G11B20/00246G11B20/00115H04L2209/60G06F2221/2105G11B20/00268G11B20/00362H04L9/3226H04L9/0844G11B20/00557H04L9/3273G11B20/00347G06F21/10
Inventor 木谷聪村松克美
Owner SONY CORP
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