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    • 3. 发明授权
    • Secure system for controlling the unlocking of at least one openable panel of a motor vehicle
    • 用于控制机动车辆的至少一个可打开面板的解锁的安全系统
    • US06424254B1
    • 2002-07-23
    • US09568583
    • 2000-05-11
    • Charles Rydel
    • Charles Rydel
    • B60R2510
    • B60R25/00G07C9/00309G07C2009/005G07C2009/00555G07C2009/00793G07C2209/61G07C2209/63
    • A system for locking/unlocking at least one motor vehicle openable panel comprising transmission/reception devices which are intended for transmitting, from the vehicle, a radio-frequency interrogation signal, which transmission/reception devices are intended to be carried by a user and which, on receipt of the interrogation signal, are intended for transmitting a radio-frequency identification signal so as to actuate the unlocking of the openable panel, which system comprises detection unit which are linked to the transmission/reception devices on the vehicle and which are able to detect, on an identification signal received on the transmission/reception devices, a modification of a parameter of the transmission, between the transmission/reception means of the vehicle and of the user, which may be due to the interposition, between the vehicle and the user, of intermediate transmission/reception devices.
    • 一种用于锁定/解锁至少一个机动车辆可开启面板的系统,包括发送/接收设备,用于从车辆发送射频询问信号,哪个发送/接收设备将被用户携带,以及哪个 在接收到询问信号时,用于发送射频识别信号,以启动可开启面板的解锁,该系统包括检测单元,该检测单元链接到车辆上的发送/接收设备,并且能够 根据在所述发送/接收设备上接收到的识别信号,检测所述车辆和所述用户的所述发送/接收装置之间的所述发送参数的修改,所述变化参数可能是由于所述插入而引起的, 中间发送/接收设备的用户。
    • 9. 发明授权
    • Low consumption multi-stage amplifier, and a vehicle onboard signal
receiver having such an amplifier
    • 低功耗多级放大器,以及具有这种放大器的车载信号接收器
    • US5530405A
    • 1996-06-25
    • US410122
    • 1995-03-23
    • Charles Rydel
    • Charles Rydel
    • H03H7/38H03F3/19H03F3/42H03G3/02H04B1/16H03G3/30
    • H03F3/42
    • A multi-stage amplifier of low current consumption, such as an onboard receiver for a motor vehicle for receiving telecontrol systems for opening the doors or interrogation signals for the alarm system of the vehicle, has the polarising networks for the amplification stages connected in series in such a way as to reduce the power consumption of the circuitry in the static state. The amplifier stages are connected in series on the polarising bridge in the static state, and in the dynamic state they are connected in cascade. The output of the first stage is connected to the input of the next stage through an impedance matching reactance. In another aspect, gain is controlled by injection/extraction of current between the output terminal of the amplifier and an injection/extraction terminal on the input of the first stage.
    • 具有低电流消耗的多级放大器,例如用于接收用于打开门的遥控系统的机动车辆的车载接收机或用于车辆的报警系统的询问信号,具有用于串联连接的放大级的极化网络 这样一种方式可以降低处于静态状态的电路的功耗。 放大器级在静态下串联连接在偏振桥上,在动态状态下,它们串联连接。 第一级的输出通过阻抗匹配电抗连接到下一级的输入端。 在另一方面,通过在放大器的输出端子与第一级输入端上的注入/提取端子之间注入/提取电流来控制增益。