发明名称 |
A SECURITY DOCUMENT CIRCUIT |
摘要 |
The authenticity of a security document, such as a bank note, is verified by use of a security feature arranged in or on the document, which security feature comprises an antenna arranged to receive EM-radiation from an external energy source; a rectifier arranged to receive electric energy from the antenna and convert it into a rectified current; and an electrochromic display arranged to alter its electrochromic state in response to said rectified current. Hence, a security feature able alter its appearance in response to EM- radiation is provided, which comprises a display that can be given a large variety of two dimensional shapes. |
申请公布号 |
CA2685528(C) |
申请公布日期 |
2016.04.12 |
申请号 |
CA20082685528 |
申请日期 |
2008.04.30 |
申请人 |
DE LA RUE INTERNATIONAL LIMITED |
发明人 |
MALMSTROEM, ANNA;NORDLINDER, STAFFAN;WANG, XIN;NORBERG, PETRONELLA;ROBERTSSON, MATS;SNELLING, JAMES PETER;COOPER, PHILIP GEORGE;HENNERDAL, LARS-OLOV |
分类号 |
G07D7/004;B42D25/29;B42D25/30;G07D7/06 |
主分类号 |
G07D7/004 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|