Method and apparatus to protect media existing in an insecure format
First Claim
1. A method of managing processing of video content, the video content including picture data representing picture elements to be rendered for display to a user, and including data conveyed along with the picture data but not representing picture elements to be rendered for display to a user, the method including:
- (a) examining the data for copy control data, wherein the data comprises a header;
(b) only if the copy control data is missing, examining the picture data for a steganographic signal; and
(c) if the copy control data is missing, and the steganographic signal is present, then limiting processing of the video content.
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Accused Products
Abstract
The present invention provides methods, systems and apparatus to manage processing of video content. In one implementation, a method of managing processing of video content is provided. The video content includes picture data representing picture elements to be rendered for display to a user. The embedded data is conveyed along with the video content. The method includes: (a) examining the embedded data for rights data, wherein the rights data is carried by a header; (b) only if the rights data is missing, examining the embedding data for protect data that is contained within the picture data; and (c) if the rights data is missing and the protect data is present, then limiting processing of the video content. Other implementations are provided as well.
133 Citations
31 Claims
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1. A method of managing processing of video content, the video content including picture data representing picture elements to be rendered for display to a user, and including data conveyed along with the picture data but not representing picture elements to be rendered for display to a user, the method including:
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(a) examining the data for copy control data, wherein the data comprises a header; (b) only if the copy control data is missing, examining the picture data for a steganographic signal; and (c) if the copy control data is missing, and the steganographic signal is present, then limiting processing of the video content. - View Dependent Claims (2)
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3. A method of managing processing of video content, the video content including picture data representing picture elements to be rendered for display to a user, and including a first watermark and a second watermark, the method including:
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(a) examining the video content for the first watermark to obtain copy control data, wherein the first watermark comprises a header; (b) examining the picture data for a second watermark, wherein the picture data is examined for the second watermark only when the copy control data is missing; and (c) if the copy control data is missing, and the second watermark is present, then limiting processing of the video content. - View Dependent Claims (4)
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5. A method of managing processing of video content, the video content including picture data representing picture elements to be rendered for display to a user, where embedded data is conveyed along with the video content, the method including:
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(a) examining the embedded data for rights data, wherein the rights data is carried by a header; (b) only if the rights data is missing, examining the embedded data for protect data that is contained within the picture data; and (c) if the rights data is missing and the protect data is present, then limiting processing of the video content. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification