发明公开
- 专利标题: OPTICALLY-BASED METHODS AND APPARATUS FOR PERFORMING DOCUMENT AUTHENTICATION
- 专利标题(中): 对于身份验证单据的光学方法和装置
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申请号: EP98915196.4申请日: 1998-03-31
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公开(公告)号: EP1008099A1公开(公告)日: 2000-06-14
- 发明人: LAWANDY, Nabil, M. , DRISCOLL, Timothy, J.
- 申请人: BROWN UNIVERSITY RESEARCH FOUNDATION
- 申请人地址: 42 Charlesfield Street Providence, RI 02912 US
- 专利权人: BROWN UNIVERSITY RESEARCH FOUNDATION
- 当前专利权人: BROWN UNIVERSITY RESEARCH FOUNDATION
- 当前专利权人地址: 42 Charlesfield Street Providence, RI 02912 US
- 代理机构: Beetz & PartnerPatentanwälte
- 优先权: US835655 19970410
- 国际公布: WO9845803 19981015
- 主分类号: G06K9/74
- IPC分类号: G06K9/74
摘要:
A method for authenticating a document (10). The method includes the steps of: (a) providing a document (10) to be authenticated; (b) illuminating at least a portion (12) of the document with laser light (14) that exceeds a threshold fluence; (c) detecting (16) a narrow band laser-like emission of at least one wavelength from the document in response to the step of illuminating (14); and (d) declaring the document to be authentic only if the laser-like emission is detected.
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