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    • 52. 发明授权
    • Method and apparatus for an anti-theft system against radio relay attack in passive keyless entry/start systems
    • 无源无钥匙进入/启动系统中防盗系统的无线电中继攻击的方法和装置
    • US07791457B2
    • 2010-09-07
    • US11639915
    • 2006-12-15
    • Riad GhabraYi LuoJohn NantzRonald O. King
    • Riad GhabraYi LuoJohn NantzRonald O. King
    • B60R25/10G05B19/00G05B23/00G06F7/00G06F7/04G08B29/00G08C19/00H04B1/00H04B3/00H04Q1/00H04Q9/00
    • G07C9/00309B60R25/24G07C2009/00555G07C2009/00793
    • An apparatus and method is provided for identifying unauthorized access to a vehicle having a keyless-passive entry system. An interrogation signal is broadcast from a vehicle based transmission device. The interrogation signal includes a first pulse transmitted at a first amplitude and a second pulse transmitted at a second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold. The interrogation signal is received by a portable communication device. A determination is made whether the second amplitude of the second pulse is greater than the first amplitude of the first pulse by a predetermined difference threshold. A determination is made that the interrogation signal is an authorized interrogation signal in response to the determination that the interrogation signal includes the first pulse transmitted at the first amplitude following by the second pulse transmitted at the second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold.
    • 提供了一种用于识别对具有无钥匙被动进入系统的车辆的未授权访问的装置和方法。 从基于车辆的传输设备广播询问信号。 询问信号包括以第一幅度发送的第一脉冲和以第二幅度发送的第二脉冲,其中第二幅度大于第一幅度至少预定的差值阈值。 询问信号由便携式通信设备接收。 确定第二脉冲的第二幅度是否大于第一脉冲的第一幅度预定的差阈值。 响应于确定询问信号包括以第二幅度发送的第二脉冲后的第一幅度发送的第一脉冲的确定,询问信号是授权询问信号,其中第二幅度大于第一幅度 振幅至少预定的差值阈值。
    • 56. 发明申请
    • Method and apparatus for an anti-theft system against radio relay attack in passive keyless entry/start systems
    • 无源无钥匙进入/启动系统中防盗系统的无线电中继攻击的方法和装置
    • US20080143500A1
    • 2008-06-19
    • US11639915
    • 2006-12-15
    • Riad GhabraYi LuoJohn NantzRonald O. King
    • Riad GhabraYi LuoJohn NantzRonald O. King
    • B60R25/10
    • G07C9/00309B60R25/24G07C2009/00555G07C2009/00793
    • An apparatus and method is provided for identifying unauthorized access to a vehicle having a keyless-passive entry system. An interrogation signal is broadcast from a vehicle based transmission device. The interrogation signal includes a first pulse transmitted at a first amplitude and a second pulse transmitted at a second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold. The interrogation signal is received by a portable communication device. A determination is made whether the second amplitude of the second pulse is greater than the first amplitude of the first pulse by a predetermined difference threshold. A determination is made that the interrogation signal is an authorized interrogation signal in response to the determination that the interrogation signal includes the first pulse transmitted at the first amplitude following by the second pulse transmitted at the second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold.
    • 提供了一种用于识别对具有无钥匙无源进入系统的车辆的未授权访问的装置和方法。 从基于车辆的传输设备广播询问信号。 询问信号包括以第一幅度发送的第一脉冲和以第二幅度发送的第二脉冲,其中第二幅度大于第一幅度至少预定的差值阈值。 询问信号由便携式通信设备接收。 确定第二脉冲的第二幅度是否大于第一脉冲的第一幅度预定的差阈值。 响应于确定询问信号包括以第二幅度发送的第二脉冲后的第一幅度发送的第一脉冲的确定,询问信号是授权询问信号,其中第二幅度大于第一幅度 振幅至少预定的差值阈值。