Method and device for obtaining DVD disc controlled content or information and method for controlling DVD device

Abstract

A rights management device for storage media such as digital optical discs (DVDs, also known as digital versatile discs) that is available on a limited, mass-produced, inexpensive, low-power platform—such as a dedicated home disc player —Adequate copy protection and provide enhanced, more flexible security technologies and methods when the same media is used on platforms with more security capabilities. A control object (or set) defines multiple rights management rules, such as performance prices or redistribution rules. Low-functionality platforms can only use a subset of control rules, such as control over copying or tagging of played material. Platforms with more advanced functionality can use all (or a different subset) of the rules. Confidential security is provided by encrypting at least part of the information contained on the medium so that it can be decrypted based on control sets and / or other restrictions. A secure "software container" can be used to protectively encapsulate (eg, use encryption) various digital property content (eg, video, audio, games, etc.) and control object (eg, rule sets) information. Provides a standardized container format for general use across a variety of media and platforms. In addition, a dedicated container can be provided for DVD media and devices (eg recorders, players, etc.) that contain DVD program content (digital property) and DVD media specific rules. The techniques, systems and methods disclosed herein are compatible with other protection standards, such as the CGMA and Matsushita data protection standards adopted for DVDs. Cooperative rights management may also be provided, in which multiple networked rights management devices jointly control a rights management event on one or more such devices.

Description

[0001] This application is a divisional application of the Chinese patent application filed on May 15, 1997 with the application number 97196487.4 and the title of the invention is "encryption method, device and system for storage medium electronic rights management in closed connection equipment". [0002] Cross references to related applications and patents [0003] This specification refers to the specification and drawings of the following prior, commonly assigned published patents. [0004] PCT Publication No. WO96 / 27155, filed September 6, 1996, entitled "System and Method for Secure Transaction Management and Electronic Rights Protection," which is based on PCT Application PCT / US96 / 02303 and U.S. Patent Application Serial No. 08 / 388107 to Ginter et al., filed February 13, 1995 (hereinafter referred to as the Ginter et al. patent); [0005] U.S. Patent No. 4,827,508, titled "Database Usage Measurement and Protection System and Method", filed on May 2, 1989; [0006] U.S...

AI Technical Summary

Problems solved by technology

Solutions proposed to date to protect DVD content have generally focused only on limited copyright protection objectives, failing to adequately address or even recognize the more complex rights management objectives and requirements

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