| 摘要 |
A method and system that prevents wide-scale distribution of content material relies upon the use of a copy-protection signal that is associated with the content material. A compliant device is configured to enforce appropriate copy-protection safeguards based on the presence or absence of the copy-protection signal. If a compliant device produces a copy of the copy-protected material, the compliant device is configured to assure that the copy-protection signal is contained within the produced copy and in subsequent retransmissions and rerecordings in a local environment. To prevent wide-scale distribution of copy-protected material, compliant devices are configured to prevent communication of the copy-protected material to wide-area networks, such as the Internet. Because the compliant devices are configured to maintain the copy-protection signal, and to control the distribution of material that contains this signal, the wide-scale distribution of protected content material is avoided. Because the protection provided is limited to preventing wide-scale distribution, adverse consumer reactions to the imposed use of a copy-protection scheme are minimized.
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