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    • 5. 发明授权
    • Communication module
    • 通讯模块
    • US5517015A
    • 1996-05-14
    • US299031
    • 1994-08-31
    • Stephen M. CurryMichael L. BolanKevin E. DeierlingWilliam L. Payne, IIHal KurkowskiDonald R. DiasGary V. ZandersRobert D. LeeGuenter H. Lehmann
    • Stephen M. CurryMichael L. BolanKevin E. DeierlingWilliam L. Payne, IIHal KurkowskiDonald R. DiasGary V. ZandersRobert D. LeeGuenter H. Lehmann
    • G01K1/02G01K3/10G01K7/24G06F1/00G06F1/20G06F3/023G06F3/038G06K7/00G06K19/07G11C5/00G11C5/06G11C7/06G11C7/24G11C8/20H01L23/58G06K19/06
    • H01L23/58G01K1/028G01K3/10G01K7/245G06F1/206G06F21/73G06F21/79G06F3/0383G06F3/04897G06K19/07G06K7/0021G11C5/066G11C5/143G11C7/065G11C7/24G11C8/20H01L2924/0002H01L2924/3011Y02B60/1275
    • A communication module comprises a substantially token-shaped body with first and second electrically conductive surface areas. The first and second surface areas are electrically isolated from each other and circuitry is positioned in the cavity within the substantially token-shaped body, and has connections to said first and second areas. The substantially token-shaped body has a perimeter around it. The first and second electrically conductive surface areas form a substantial portion of the substantially token-shaped body. The first and second electrically conductive surface areas form a cavity. One of the surface areas forming a flange around the perimeter of the substantially token-shaped body. The flange preferably resides in one geometric plane. The circuitry provides for the receipt and transmission of digital signals that are determined as voltage differences between said first and second areas. The circuitry preferably includes a capacitor for storing energy from said voltage intermittently applied between the first and second areas, so that the circuit is powered by a battery within said body. The first area comprises one flat face of the body and the second area comprises a second flat face parallel to said one flat face plus a portion of a curved surface which is perpendicular to said flat faces. The circuitry includes (1) a voltage level detector coupled to the first and second areas for receiving signals applied as voltage differences between the first and second areas and (2) a switch connecting the first and second areas for sending signals by changing the resistance between the first and second areas. The voltage level detector preferably detects only two levels.
    • 通信模块包括具有第一和第二导电表面区域的基本上令牌形的主体。 第一和第二表面区域彼此电绝缘,并且电路被定位在基本上令牌形的主体内的空腔中,并且具有到所述第一和第二区域的连接。 基本上令牌形的主体具有围绕它的周边。 第一和第二导电表面区域形成基本上令牌形的主体的实质部分。 第一和第二导电表面区域形成空腔。 一个表面区域围绕基本上令牌形的主体的周边形成凸缘。 凸缘优选地位于一个几何平面中。 该电路提供数字信号的接收和发送,该数字信号被确定为所述第一和第二区域之间的电压差。 电路优选地包括电容器,用于存储间歇地施加在第一和第二区域之间的所述电压的能量,使得电路由所述主体内的电池供电。 第一区域包括主体的一个平坦面,第二区域包括平行于所述一个平面的第二平面以及垂直于所述平面的弯曲表面的一部分。 电路包括(1)耦合到第一和第二区域的电压电平检测器,用于接收作为第一和第二区域之间的电压差施加的信号,以及(2)连接第一和第二区域的开关,用于通过改变第一和第二区域之间的电阻来发送信号 第一和第二区域。 电压电平检测器优选仅检测两个电平。
    • 9. 发明授权
    • Security device and method
    • 安全设备和方法
    • US06986057B1
    • 2006-01-10
    • US09644031
    • 2000-08-22
    • James P. CuseyHal Kurkowski
    • James P. CuseyHal Kurkowski
    • H04L9/00H04L9/32H04K1/00G06F11/30G06F12/14
    • G07F7/1008G06Q20/341G06Q20/4097G07F7/0866
    • A security device is disclosed. In one embodiment, the security device includes a memory device comprising having a first memory portion configured to store a device ID; and a second memory portion configured to store a device secret. The security device further includes a processor connected to the memory device wherein the processor is configured to read the stored device ID from the first memory portion and the stored device secret from the second memory portion and perform a nonreversible computation using the stored device ID, the stored device secret, and a challenge as seeds. Additionally, the security device includes a communication circuit connected to the processor, the communication circuit configured to receive the challenge from a host device and to communicate a result of the nonreversible computation performed by the processor.
    • 公开了一种安全装置。 在一个实施例中,安全设备包括存储器设备,包括具有被配置为存储设备ID的第一存储器部分; 以及被配置为存储设备秘密的第二存储器部分。 安全设备还包括连接到存储器设备的处理器,其中处理器被配置为从第一存储器部分读取所存储的设备ID和从第二存储器部分读取所存储的设备密码,并使用存储的设备ID执行不可逆计算, 存储设备的秘密,和挑战作为种子。 此外,安全装置包括连接到处理器的通信电路,通信电路被配置为从主机设备接收挑战并传送由处理器执行的不可逆计算的结果。