Method and apparatus to protect media existing in an insecure format
AssigneeDigimarc Corporation
InventorKenneth L Levy
Life of this patent
Estimating the term…
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.
Claims31
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.
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:
- (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.
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:
- (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.
Dependencies are inferred from the claim text.