Digital watermarking and fingerprinting applications for copy protection
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United States of America Patent
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May 24, 2016
Grant Date -
Mar 25, 2004
app pub date -
Jul 16, 2003
filing date -
Jul 16, 2002
priority date (Note) -
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Abstract
Improved copy protection systems including copy once, personal computer (PC) buffer copy protection, and identifying different copy control systems are provided. A “copy once” protection system uses memory in a recording device to remember content or physical media IDs so that the same original content or media is not copied twice. A PC buffer copy protection system determines if there is a relationship between input and output buffers on a PC, or networked PCs, to determine if the content can be copied. Different copy control systems, such as DVD systems and Conditional Access (CA) TV systems, can use different copy control watermark keys or payloads to identify which type of copy control system should be implemented.
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