In this paper, it presents a digital watermark protocol used for copy tracing.

提出了用于盗版追踪的数字水印协议。

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But more research of the digital watermarking focus on algorithms and theoretical basis, while ignoring the design of watermark application protocol and implementation.

但是目前对于数字水印的研究多集中在算法和理论基础方面，而忽视了水印的应用协议和实施标准设计和制定。

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But more research of the digital watermarking focus on algorithms and theoretical basis, while ignoring the design of watermark application protocol and implementation.

但是目前对于数字水印的研究多集中在算法和理论基础方面，而忽视了水印的应用协议和实施标准设计和制定。

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