Receiving system having a plurality of frequency converters for use with a vehicle
    2.
    发明授权
    Receiving system having a plurality of frequency converters for use with a vehicle 失效
    接收系统具有用于车辆的多个变频器

    公开(公告)号:US06760579B1

    公开(公告)日:2004-07-06

    申请号:US09449482

    申请日:1999-11-29

    IPC分类号: H04B106

    摘要: The present invention provides a mobile receiver, whereby the power consumption can be kept as lower as possible, as the size of the automobile equipment control system, the placement space thereof and the cost can be reduced, since an antenna and part of receiving circuits for keyless entry system are also used as those of a mobile radio receiver. Moreover, in order to prevent the users from feeling inconvenience in its use, the mobile receiver has a construction wherein a mixing circuit, a local oscillator circuit and the like for keyless entry system and those for radio receiver are separately arranged though the antenna and an intermediate frequency amplifier circuit are used both for keyless entry system and for radio receiver. As a result, signals from the remote control side can be received even while someone is listening to the radio.

    摘要翻译: 本发明提供了一种移动接收机,由于天线和一部分接收电路的天线和部分接收电路,因此可以将功率消耗尽可能地保持为随着汽车设备控制系统的尺寸,放置空间和成本的降低, 无钥匙进入系统也用作移动无线电接收机。 此外,为了防止用户在使用中感到不方便,移动接收机具有这样的结构,其中用于无钥匙进入系统的混合电路,本地振荡器电路等以及用于无线电接收机的本地振荡器电路分别布置在天线和 中频放大器电路既用于无钥匙进入系统和无线电接收机。 因此,即使有人正在收听广播,也可以接收来自遥控器侧的信号。