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    • 1. 发明公开
    • Low power transponder circuit
    • Schaltungfüreinen Kleinleistungstransponder
    • EP1347582A2
    • 2003-09-24
    • EP03250779.0
    • 2003-02-07
    • ZARLINK SEMICONDUCTOR (U.S.) INC.
    • Ming Liu, Mike
    • H04B1/59
    • G06K19/0712G06K19/0707H04W52/0229Y02D70/166
    • A low power transponder circuit comprises two comparator (62, 104 ; 64, 106) coupled to a signal input section, wherein only a first comparator (62, 104) is active before a valid wake-up signal is detected and validated. The first comparator (62,104) consumes less power than the second comparator (64, 106), and the second comparator (64, 106) operates at a higher speed than the first comparator (62, 104), such that valid received signal processing is performed on a signal from the second, higher speed comparator (64, 106). Reference voltage levels for the two comparators can also be modified during circuit operation with either information stored in the transponder or by data received in a valid received signal.
    • 低功率转发器电路包括耦合到信号输入部分的两个比较器(62,104; 64,106),其中在检测和验证有效的唤醒信号之前只有第一比较器(62,104)有效。 第一比较器(62,104)比第二比较器(64,106)消耗更少的功率,而第二比较器(64,106)以比第一比较器(62,104)更高的速度工作,使得对来自 第二,高速比较器(64,106)。 两个比较器的参考电压电平也可以在电路操作期间用存储在应答器中的信息或通过在有效接收信号中接收的数据进行修改。
    • 6. 发明公开
    • Method and apparatus for controlling shared positive protection
    • 为了一个共同的阳性保护的控制方法和装置
    • EP2290937A2
    • 2011-03-02
    • EP10251469.2
    • 2010-08-19
    • Zarlink Semiconductor (U.S.) Inc.
    • Ge, Qiangsheng Charssen
    • H04M3/18
    • H04M3/18H04M3/005
    • A line card includes a plurality of subscriber line interface circuits, a plurality of interface lines, and a first overvoltage protector. The subscriber line interface circuits each have a first input terminal operable to receive power at a first positive reference voltage. The interface lines are each coupled to one of the subscriber line interface circuits for interfacing with subscriber lines external to the line card. The first overvoltage protector is coupled to the interface lines and referenced to the first positive reference voltage to provide overvoltage protection responsive to a voltage on at least one of the interface lines exceeding the first positive reference voltage.
    • 的线卡包括用户线路接口电路的复数,接口线路多个,并且第一过电压保护器。 用户线接口电路的每个具有可操作的第一输入端子处的第一正参考电压接收电力。 接口线各自耦合到用户线接口电路中的一个用于与外部的线路卡用户线接口。 第一过压保护器耦合到所述接口线和参考所述第一正参考电压至接口线超过第一正参考电压中的至少一个提供响应于电压的过电压保护。
    • 7. 发明公开
    • Method and apparatus for battery switching during ringing
    • Verfahren und Vorrichtungfüreinen Batteriewechselwährenddes Klingelns
    • EP2282504A2
    • 2011-02-09
    • EP10251372.8
    • 2010-08-02
    • Zarlink Semiconductor (U.S.) Inc.
    • Nagerjaiah, YadunandanDarveau, MichelBass, Eric
    • H04M19/02
    • H04M19/02
    • A method for providing a ringing signal includes providing a plurality of batteries coupled to a subscriber line interface circuit operable to generate the ringing signal during a ringing cycle and switching selected batteries during the ringing cycle based on values of the ringing signal during the ringing cycle. A line card includes a subscriber line audio-processing circuit operable to generate values for a ringing signal during a ringing cycle, a subscriber line interface circuit coupled to the subscriber line audio-processing circuit and operable to drive the ringing signal on a subscriber line based on the generated values, a plurality of batteries coupled to a subscriber line interface circuit and a control unit operable to switch selected batteries during the ringing cycle based on the generated values of the ringing signal.
    • 提供振铃信号的方法包括提供耦合到用户线接口电路的多个电池,其可操作以在振铃周期期间产生振铃信号,并且基于振铃周期期间的振铃信号的值,在振铃周期期间切换所选择的电池。 线卡包括用户线音频处理电路,其可操作以在振铃周期期间产生振铃信号的值,用户线接口电路耦合到用户线路音频处理电路并且可操作以在用户线路上驱动振铃信号 根据所生成的值,耦合到用户线接口电路的多个电池和控制单元,其可操作以在振铃周期期间基于所产生的振铃信号的值来切换所选择的电池。