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1. 发明授权

EP0650623B1 MICROWAVE SECURITY THREAD DETECTOR 失效
标题翻译：微波检测器，用于安全线
公开(公告)号：EP0650623B1
公开(公告)日：1996-11-06
申请号：EP93918328.1
申请日：1993-07-23
申请人： AUTHENTICATION TECHNOLOGIES, INC. , Harbaugh, Steven K.
发明人： Harbaugh, Steven K. , Crane, Timothy T.
IPC分类号： G07D7/00
CPC分类号： G07D7/128 , G07D7/10
摘要： A security thread detector for verifying the authenticity of banknotes. In the preferred embodiment, the invention comprises a housing with a passage through which banknotes can be passed, wherein the housing also comprises a waveguide, a microwave oscillator for generating microwaves and two resonating slots on a wall of the waveguide, and a microwave detector. After a banknote is inserted through the passageway, the microwave diode produces an analog signal that is proportional to the microwave strength. The diode and the slots are arranged such that the radiated power from each slot is one hundred eighty degrees out-of-phase. If a banknote has no security thread, then the detector receives a balanced signal. If the banknote contains a security thread, the thread interferes with one of the radiating slots. This interference causes an imbalance condition and a corresponding signal is sent from the detector diode. The resulting signal is then sent to a microprocessor which activates an appropriate indicator. This indicator notifies the user of the presence or absence of a security thread; thus, the user can determine whether the banknote is counterfeit.

2. 发明公开

EP0650623A1 MICROWAVE SECURITY THREAD DETECTOR 失效
标题翻译：微波保险丝探测器。
公开(公告)号：EP0650623A1
公开(公告)日：1995-05-03
申请号：EP93918328.0
申请日：1993-07-23
申请人： AUTHENTICATION TECHNOLOGIES, INC. , Harbaugh, Steven K.
发明人： Harbaugh, Steven K. , Crane, Timothy T.
IPC分类号： G07D7
CPC分类号： G07D7/128 , G07D7/10
摘要： A security thread detector for verifying the authenticity of banknotes. In the preferred embodiment, the invention comprises a housing with a passage through which banknotes can be passed, wherein the housing also comprises a waveguide, a microwave oscillator for generating microwaves and two resonating slots on a wall of the waveguide, and a microwave detector. After a banknote is inserted through the passageway, the microwave diode produces an analog signal that is proportional to the microwave strength. The diode and the slots are arranged such that the radiated power from each slot is one hundred eighty degrees out-of-phase. If a banknote has no security thread, then the detector receives a balanced signal. If the banknote contains a security thread, the thread interferes with one of the radiating slots. This interference causes an imbalance condition and a corresponding signal is sent from the detector diode. The resulting signal is then sent to a microprocessor which activates an appropriate indicator. This indicator notifies the user of the presence or absence of a security thread; thus, the user can determine whether the banknote is counterfeit.

3. 发明公开

EP0680023A3 Security thread verification device 失效
标题翻译：安全线测试设备。
公开(公告)号：EP0680023A3
公开(公告)日：1996-04-24
申请号：EP95302621.8
申请日：1995-04-20
申请人： AUTHENTICATION TECHNOLOGIES, INC.
发明人： Harbaugh, Steven K.
IPC分类号： G07D7/00
CPC分类号： G07D7/026
摘要： A currency paper (104) has a security thread embedded therein (108). The thread (108) comprises a plastic substrate (116) having a plurality of alphanumeric, metallic, electrically conductive characters (112) formed thereon. The characters (112) have predetermined heights and widths and spacings therebetween. The verification device (100) comprises an oscillator electrode (128) and associated horizontal and vertical electrodes (132, 136). A time-varying oscillator signal is coupled to the oscillator electrode (128). The spacing of the horizontal and vertical electrodes (132, 136) in relation to the oscillator electrode (128) is determined by the spacing between the metallized characters (112) on the thread (116). A valid security thread (108) capacitively couples the oscillator signal into the horizontal electrode (132) but not the vertical electrode (136). On the other hand, a counterfeit security thread will couple the oscillator signal into both the horizontal and vertical electrodes (132, 136). Signal processing electronics (140) is provided to sense these valid and counterfeit threads (108).

4. 发明授权

EP0680023B9 Security thread verification device 失效
标题翻译：安全线测试设备
公开(公告)号：EP0680023B9
公开(公告)日：2002-03-13
申请号：EP95302621.8
申请日：1995-04-20
申请人： AUTHENTICATION TECHNOLOGIES, INC.
发明人： Harbaugh, Steven K.
IPC分类号： G07D7/00
CPC分类号： G07D7/026

5. 发明授权

EP0680023B1 Security thread verification device 失效
标题翻译：安全线测试设备
公开(公告)号：EP0680023B1
公开(公告)日：2000-10-25
申请号：EP95302621.8
申请日：1995-04-20
申请人： AUTHENTICATION TECHNOLOGIES, INC.
发明人： Harbaugh, Steven K.
IPC分类号： G07D7/00
CPC分类号： G07D7/026

6. 发明公开

EP0680023A2 Security thread verification device 失效
标题翻译： Sicherheitsfadenprüfungsvorrichtung。
公开(公告)号：EP0680023A2
公开(公告)日：1995-11-02
申请号：EP95302621.8
申请日：1995-04-20
申请人： AUTHENTICATION TECHNOLOGIES, INC.
发明人： Harbaugh, Steven K.
IPC分类号： G07D7/00
CPC分类号： G07D7/026
摘要： A currency paper (104) has a security thread embedded therein (108). The thread (108) comprises a plastic substrate (116) having a plurality of alphanumeric, metallic, electrically conductive characters (112) formed thereon. The characters (112) have predetermined heights and widths and spacings therebetween. The verification device (100) comprises an oscillator electrode (128) and associated horizontal and vertical electrodes (132, 136). A time-varying oscillator signal is coupled to the oscillator electrode (128). The spacing of the horizontal and vertical electrodes (132, 136) in relation to the oscillator electrode (128) is determined by the spacing between the metallized characters (112) on the thread (116). A valid security thread (108) capacitively couples the oscillator signal into the horizontal electrode (132) but not the vertical electrode (136). On the other hand, a counterfeit security thread will couple the oscillator signal into both the horizontal and vertical electrodes (132, 136). Signal processing electronics (140) is provided to sense these valid and counterfeit threads (108).
摘要翻译：该器件包括导电的振荡器电极并且具有施加到其上的时变振荡器信号。水平电极是导电的并且设置成与振荡器电极相邻并物理分离一定距离。垂直电极是导电的并且与振荡器电极相邻并且与物理分离一定距离。信号处理装置连接到所有振荡器，水平电极和垂直电极，用于将振荡器信号提供给振荡器电极，以便在振荡器信号电容耦合到水平和垂直电极时检测振荡器信号，并确定是否存在与文档相关联的有效安全性线程。

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