DIGITAL RIGHTS MANAGEMENT SYSTEM AND METHOD
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Accused Products
Abstract
A system and a method for providing variable security mechanisms for securing digital content, in which a single security mechanism is not used for all content. Instead, at least one characteristic or feature of the security mechanism is varied between units, instances or categories of content. Therefore, even if unauthorized access is gained to a single unit of content, the overall integrity and security of the system for content distribution is not compromised. Preferably, security is provided though a general mechanism, which is then varied in order to provide variable, dissimilar security schemes for different types of content. By “type of content”, it is meant any of a single unit of content, a single instance of content or a single category of content. For example, for a category of content, the content may be characterized according to the identity of the content itself, such as the title of a movie for example, and/or according to the owner of a particular copy of the content. Thus, different security schemes may optionally and preferably be generated from a particular root structure. Related apparatus and methods are also provided.
114 Citations
124 Claims
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1-105. -105. (canceled)
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106. A method for generating a signature for an end user device, the end user device comprising at least video display hardware and video display software, the method comprising:
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processing video data by the video display hardware and the video display software; altering at least a portion of the video data during processing according to a characteristic of at least one of the video display hardware and the video display software to form altered data; and forming the signature based, at least in part, on said altered data. - View Dependent Claims (107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122)
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123. A signature generation apparatus comprising:
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video display hardware; and video display software, wherein the video display hardware and the video display software are operable to process video data by altering at least a portion of the video data according to a characteristic of at least one of the video display hardware and the video display software to form altered data; and
further operable to form a signature based, at least in part, on said altered data.
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124. Apparatus for generating a signature, said apparatus comprising:
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hardware means for processing video data; and software means for processing video data, wherein said hardware means and said software means process video data by altering at least a portion of received video data according to a characteristic of at least one of the hardware and software means to form altered data; and
for forming a signature based, at least in part, on said altered data.
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Specification