发明授权
US06799158B2 Method and system for generating a characteristic identifier for digital data and for detecting identical digital data
有权
用于产生数字数据的特征标识符并用于检测相同的数字数据的方法和系统
- 专利标题： Method and system for generating a characteristic identifier for digital data and for detecting identical digital data
- 专利标题（中）： 用于产生数字数据的特征标识符并用于检测相同的数字数据的方法和系统
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申请号： US09739130申请日： 2000-12-18
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公开(公告)号： US06799158B2公开(公告)日： 2004-09-28
- 发明人: Uwe Fischer , Stefan Hoffmann , Werner Kriechbaum , Gerhard Stenzel
- 申请人： Uwe Fischer , Stefan Hoffmann , Werner Kriechbaum , Gerhard Stenzel
- 优先权： DE99125884 19991224
- 主分类号： G10L1914
- IPC分类号： G10L1914
摘要：
A characteristic identifier for digital data is generated. Thereby, the information contained in a digital data set is reduced such that the resulting identifier is made comparable to another identifier made in the same manner. The generated identifiers are used for detecting identical digital data or to determine inexact copies of digital data. In one embodiment of the invention, the digital data is a digital audio signal and the characteristic identifier is called an audio signature. The comparison of identical audio data according to the invention can be carried out without a person actually listening to the audio data. The present invention can be used to establish automated processes to find potential unauthorized copies of audio data, e.g., music recordings, and therefore enables a better enforcement of copyrights in the audio industry.