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1. 发明公开

EP3149850A1 RC OSCILLATOR BASED ON DELAY-FREE COMPARATOR 审中-公开
标题翻译： RC-OSZILLATOR AUF基于爱尔兰VERZÖGERUNGSFREIENVERGLEICHERS
公开(公告)号：EP3149850A1
公开(公告)日：2017-04-05
申请号：EP15723807.2
申请日：2015-05-07
申请人： Qualcomm Incorporated
发明人： WANG, Le , MEHRABI, Arash
IPC分类号： H03K3/0231 , H03K4/50
CPC分类号： H03B5/04 , H03B5/20 , H03K3/0231 , H03K3/30 , H03K4/50 , H04B5/04
摘要： Cancelling a delay in a comparator of an RC oscillator configured to generate a clock pulse, including: selectively coupling a plurality of current sources to a first capacitor, a second capacitor, and a resistor, wherein the plurality of current source charge and discharge the first capacitor and the second capacitor, and charge the resistor; charging the first capacitor at a higher rate during a first phase of the clock pulse than a second phase of the clock pulse, and charging the second capacitor at a higher rate during a third phase of the clock pulse than a fourth phase of the clock pulse; and generating the clock pulse by enabling the comparator to compare a voltage on the first or second capacitor with a voltage on the resistor.
摘要翻译：取消被配置为产生时钟脉冲的RC振荡器的比较器中的延迟，包括：选择性地将多个电流源耦合到第一电容器，第二电容器和电阻器，其中所述多个电流源对所述第一电容器和第二电容器，并对电阻充电; 在时钟脉冲的第一相位期间以比时钟脉冲的第二相位更高的速率对第一电容器充电，并且在时钟脉冲的第三相位期间以比时钟脉冲的第四相位更高的速率对第二电容器充电 ; 并通过使比较器将第一或第二电容器上的电压与电阻器上的电压进行比较来产生时钟脉冲。

2. 发明公开

EP3127237A1 CAPACITIVE PROGRAMMABLE GAIN AMPLIFIER 审中-公开
标题翻译： KAPAZITIVERVERSTÄRKERMIT程序员VERSTÄRKUNG
公开(公告)号：EP3127237A1
公开(公告)日：2017-02-08
申请号：EP15714360.3
申请日：2015-03-19
申请人： Qualcomm Incorporated
发明人： HUANG, Wenchang , SHAH, Peter Jivan , AZIN, Meysam , MEHRABI, Arash
IPC分类号： H03G1/00 , H03G3/00
CPC分类号： H03G3/008 , H03F3/45475 , H03F2200/129 , H03F2200/267 , H03F2203/45118 , H03F2203/45156 , H03F2203/45514 , H03G1/0088 , H03G3/001
摘要： An apparatus includes an operational amplifier and a plurality of capacitors coupled to an input terminal of the operational amplifier and configured to be selectively coupled to receive one of an input voltage signal and an output voltage signal of the operational amplifier.
摘要翻译：一种装置包括运算放大器和耦合到运算放大器的输入端的多个电容器，并且被配置为选择性地耦合以接收运算放大器的输入电压信号和输出电压信号之一。

3. 发明授权

EP2791692B1 PLUG TYPE DETECTION 有权
标题翻译：检测了塞子型的
公开(公告)号：EP2791692B1
公开(公告)日：2016-09-28
申请号：EP12813643.9
申请日：2012-12-17
申请人： Qualcomm Incorporated
发明人： SHAH, Peter J. , MEHRABI, Arash
IPC分类号： H04R5/04 , G01R31/04 , H04R1/10
CPC分类号： H04R5/04 , G01R31/041 , G01R31/043 , H04R1/1033 , H04R2420/09

4. 发明公开

EP3127236A1 MULTI-STAGE SWITCHED-CAPACITOR DC BLOCKING CIRCUIT FOR AUDIO FRONTEND 审中-公开
标题翻译： MEHRSTUFIGE SCHALTKONDENSATOR-GLEICHSTROMSPERRSCHALTUNGFÜRAUDIO-FRONTEND
公开(公告)号：EP3127236A1
公开(公告)日：2017-02-08
申请号：EP15708667.9
申请日：2015-02-26
申请人： Qualcomm Incorporated
发明人： AZIN, Meysam , MEHRABI, Arash , HUANG, Wenchang
IPC分类号： H03F3/00 , H03F3/181 , H03F3/187 , H03H19/00
CPC分类号： H03F3/185 , H03F3/005 , H03F3/181 , H03F3/187 , H03F3/45179 , H03F3/45183 , H03F2200/03 , H03F2203/45016 , H03F2203/45514 , H03H19/004 , H04R3/00
摘要： An integrated DC blocking amplifier circuit (100), including: an operational amplifier (110) configured in a differential amplifier; and at least first and second two-stage switched-capacitor circuits, each two stage switched-capacitor circuit including a first-stage circuit(140,144) and a second-stage circuit (142,146), wherein the first two-stage switched capacitor circuit is connected to a positive feedback path of the operational amplifier and the second two-stage switched capacitor circuit is connected to a negative feedback path of the operational amplifier, wherein the first-stage circuit is switched at a relatively low switching frequency, while the second-stage circuit is switched at a relatively high switching frequency.
摘要翻译：一种集成直流阻塞放大器电路，包括：配置在差分放大器中的运算放大器; 以及至少第一和第二两级开关电容器电路，每个两级开关电容器电路包括第一级电路和第二级电路，其中所述第一两级开关电容器电路连接到正侧反馈运算放大器和第二两级开关电容电路的路径连接到运算放大器的负侧反馈路径，其中第一级电路以相对低的开关频率切换，而第二级电路被切换在相对高的开关频率。

5. 发明公开

EP2791692A1 PLUG TYPE DETECTION 有权
标题翻译：检测了塞子型的
公开(公告)号：EP2791692A1
公开(公告)日：2014-10-22
申请号：EP12813643.9
申请日：2012-12-17
申请人： Qualcomm Incorporated
发明人： SHAH, Peter J. , MEHRABI, Arash
IPC分类号： G01R31/04 , H04M1/725 , H04R5/04
CPC分类号： H04R5/04 , G01R31/041 , G01R31/043 , H04R1/1033 , H04R2420/09
摘要： Techniques for detecting the type of a media plug inserted into a corresponding jack. In an exemplary embodiment, the output of a first power amplifier for driving a media plug terminal, e.g., the right headphone or left headphone, is selectively coupled to a reference voltage. Measurements of the voltage at a microphone terminal of the media plug may be alternately made for the reference voltage being at a first value and a second value. In an embodiment, the first power amplifier output voltage may be varied by opening or closing a switch. Alternatively, the first power amplifier output voltage may be directly set by an input voltage to the first power amplifier. By detecting changes in the voltages measured at the microphone terminal, it may be determined whether the media plug is of a North American type or European type.

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