| 摘要 |
Protection of content by deterring unauthorized redistribution may be accomplished by at least one of three methods in a consumer modulator device. A first method protects content from unauthorized redistribution by other devices in a content protection system by verifying authenticity of a validated flag, the validated flag being at least a portion of the content, and by removing the validated flag when the validated flag is not authentic. A second method protects content from unauthorized redistribution by other devices by checking whether the content includes a broadcast flag, the broadcast flag being at least a portion of the content, and by removing the broadcast flag from the content when the broadcast flag is detected in the content. A third method protects content from unauthorized redistribution by other devices by checking whether the content includes a watermark, the watermark being at least a portion of the content, by checking whether the content includes a broadcast flag when the watermark is found in the content, the broadcast flag being at least a portion of the content, and by removing the broadcast flag from the content when the watermark found in the content is more restrictive than a broadcast watermark.
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