| DII、esp@cenet、CA在科技查新专利检索中的应用 |
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| 引用本文： | 张绍武.DII、esp@cenet、CA在科技查新专利检索中的应用[J].图书情报工作,2004,48(7):86-89. |
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| 作者姓名： | 张绍武 |
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| 作者单位： | 中国科学院成都文献情报中心, 成都 610041 |
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| 摘 要： | 详细分析德温特专利创新索引(DII)、欧洲专利系统(esp@cenet)、美国化学文摘(CA)3种检索工具对专利文献的报 道特征与检索功能；通过检索实例对3者应用于科技查新专利检索的优势与不足进行评析，并就具体应用方法提出相关建议。
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| 关 键 词： | 德温特专利创新索引 欧洲专利系统 化学文摘 DII espacenet CA 科技查新 专利 |
| 收稿时间： | 2003-04-11 |
The Copyright Marking Technique and Its Prospects |
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| Zhang Shaowu
Library of Qujing Teachers College,Qujing.The Copyright Marking Technique and Its Prospects[J].Library and Information Service,2004,48(7):86-89. |
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| Authors: | Zhang Shaowu
Library of Qujing Teachers College Qujing |
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| Institution: | Chengdu Library of Chinese Academy of Sciences, Chengdu 610041 |
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| Abstract: | The copyright marking technique includes digital watermark and digital fingerprint. This paper analyzes their features, their abilities in attach analysis and their functions in terms of protecting the digital work copyright, and then shows the prospects for the development of copyright marking technique. |
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| Keywords: | copyright marking technique digital watermark digital fingerprint prospects |
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