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1. 发明授权

US4286306A Circuit arrangement for comparing the synchronism or tracking between two analog signals 失效
标题翻译：用于比较两个模拟信号之间的同步或跟踪的电路布置
公开(公告)号：US4286306A
公开(公告)日：1981-08-25
申请号：US62497
申请日：1979-07-31
申请人： Hermann Kraus , Peter Kirchlechner , Robert Rieger , Wolf-Dieter Schuck
发明人： Hermann Kraus , Peter Kirchlechner , Robert Rieger , Wolf-Dieter Schuck
IPC分类号： G01R19/10 , G01R19/00 , G01R19/165 , B60K31/00
CPC分类号： G01R19/0038 , G01R19/1658 , G01R19/16585
摘要： The synchronism or tracking between two analog signals is compared by a cuit arrangement having two inputs to which these analog signals are applied. A comparator circuit compares the two signals and provides a trigger or energizing signal to a switch which in turn produces an error signal when the two compared signals deviate from each other to an extent larger than a predetermined limit. One input is connected to the comparator circuit through a heterodyning circuit wherein the respective analog signal is heterodyned by a heterodyning signal which varies in its polarity. The comparator circuit includes a polarity detector which provides a signal signifying a positive or a negative difference between the amplitudes of the two polarity signals. A discriminator circuit is operatively connected to the comparator to provide a switch energizing signal when the difference signal does not have any zero transitions or passages with the frequency of the heterodyning signal.
摘要翻译：两个模拟信号之间的同步或跟踪通过具有这些模拟信号所施加的两个输入的电路装置进行比较。比较器电路比较两个信号，并向开关提供触发或激励信号，当开关两个比较的信号彼此偏离到大于预定极限的程度时又产生误差信号。一个输入通过外差电路连接到比较器电路，其中相应的模拟信号由其极性变化的外差信号外差。比较器电路包括极性检测器，其提供表示两个极性信号的振幅之间的正差或负差的信号。鉴别器电路可操作地连接到比较器以在差分信号不具有任何零转换或具有外差信号频率的通道时提供开关通电信号。

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