Method and device for obtaining controlled content or information in dvd disc and method for operating dvd device

Abstract

A rights management arrangement for storage media such as optical digital video disks (DVDs, also called digital versatile disks) provides adequate copy protection in a limited, inexpensive mass-production, low-capability platform such as a dedicated home consumer disk player and also provides enhanced, more flexible security techniques and methods when the same media are used with platforms having higher security capabilities. A control object (or set) defines plural rights management rules for instance, price for performance or rules governing redistribution. Low capability platforms may enable only a subset of the control rules such as controls on copying or marking of played material. Higher capability platforms may enable all (or different subsets) of the rules. Cryptographically strong security is provided by encrypting at least some of the information carried by the media and enabling decryption based on the control set and / or other limitations. A secure 'software container' can be used to protectively encapsulate (e.g. by cryptographic techniques) various digital property content (e.g. audio, video, game, etc) and control object (i.e. set of rules) information. A standardized container format is provided for general use on / with various mediums and platforms. In addition, a special purpose container may be provided for DVD medium and appliances (e.g., recorders, players, etc) that contains DVD program content (digital property) and DVD medium specific rules. The techniques, systems and methods disclosed herein are capable of achieving compatibility with other protection standards, such as CGMA and Matsushita data protection standards adopted for DVDs. Cooperative rights management may also be provided, where plural networked rights management arrangements collectively control a rights management event on one or more of such arrangements.

Description

[0001] This application is a divisional application of the Chinese patent application submitted on December 31, 2002 with the application number 02160594.7 and the title of the invention entitled "Method and Device for Obtaining Controlled Content or Information of DVD Disc, and Method for Operating DVD 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 filed February 13, 1996 / 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 "Law," filed May 2, 1989; [0006] U.S. Patent No. 4,977...

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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