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11. 发明授权

US07295141B1 Method for mixing signals with an analog-to-digital converter 有权
标题翻译：用于将信号与模数转换器混合的方法
公开(公告)号：US07295141B1
公开(公告)日：2007-11-13
申请号：US11457831
申请日：2006-07-17
申请人： Li-Te Wu , Wei-Chan Hsu
发明人： Li-Te Wu , Wei-Chan Hsu
IPC分类号： H03M1/66
CPC分类号： H04S3/02
摘要： The invention provides a method for mixing signals with an analog-to-digital converter. The analog-to-digital converter receives a plurality of analog signals. First, the plurality of analog signals are respectively converted to a plurality of first datastreams with a plurality of first delta-sigma modulators. The plurality of first datastreams are then mixed to generate at least one second datastream. The at least one second datastream is then converted to at least one third datastream with at least one second delta-sigma modulator. The at least one second delta-sigma modulator and the plurality of first delta-sigma modulators are triggered by the same clock signal.
摘要翻译：本发明提供了一种用于将信号与模数转换器混合的方法。模数转换器接收多个模拟信号。首先，多个模拟信号分别被转换成具有多个第一Δ-Σ调制器的多个第一数据流。然后将多个第一数据流混合以产生至少一个第二数据流。然后将至少一个第二数据流转换成具有至少一个第二Δ-Σ调制器的至少一个第三数据流。所述至少一个第二Δ-Σ调制器和所述多个第一Δ-Σ调制器由相同的时钟信号触发。

12. 发明授权

US07268718B1 Capacitor-based digital-to-analog converter for low voltage applications 有权
标题翻译：用于低电压应用的基于电容器的数模转换器
公开(公告)号：US07268718B1
公开(公告)日：2007-09-11
申请号：US11457844
申请日：2006-07-17
申请人： Li-Te Wu
发明人： Li-Te Wu
IPC分类号： H03M1/66
CPC分类号： H03M1/66
摘要： A digital-to-analog converter (DAC) compatible with CMOS technology and operable in low voltage applications. An input capacitor stores a charge sample according to a digital input signal and a previous output analog signal. An analog output circuit has a feedback capacitor to share the charge sample and accordingly generate a current output analog signal from an output node. The output node may be continually connected to the input capacitor through a pass resistor.
摘要翻译：与CMOS技术兼容的数模转换器（DAC），可在低电压应用中工作。输入电容器根据数字输入信号和先前的输出模拟信号存储充电采样。模拟输出电路具有反馈电容器以共享电荷样本，并且相应地从输出节点产生电流输出模拟信号。输出节点可以通过通过电阻器连续地连接到输入电容器。

13. 发明申请

US20110286243A1 ISOLATED FEEDBACK SYSTEM FOR POWER CONVERTERS 审中-公开
标题翻译：用于电力转换器的隔离反馈系统
公开(公告)号：US20110286243A1
公开(公告)日：2011-11-24
申请号：US13111931
申请日：2011-05-19
申请人： Wei-Chan HSU , Li-Te Wu
发明人： Wei-Chan HSU , Li-Te Wu
IPC分类号： H02M7/00
CPC分类号： H02M3/33523 , Y02B70/1433
摘要： An isolated feedback system for power converters includes an error amplifier for receiving an input voltage to output an error signal; a modulator circuit to modulate the error signal with a carrier signal; an acoustic transformer unit, one end of the acoustic transformer connected to the modulator circuit, where a frequency of the carrier signal is away from resonant frequencies of the acoustic transformer; and a demodulation circuit connected to the other end of the acoustic transformer and receiving the modulated signal.
摘要翻译：用于功率转换器的隔离反馈系统包括用于接收输入电压以输出误差信号的误差放大器; 调制器电路，用载波信号调制误差信号; 声变换器单元，声变换器的一端连接到调制器电路，其中载波信号的频率远离声变换器的谐振频率; 以及解调电路，连接到声变换器的另一端并接收调制信号。

14. 发明授权

US07657025B2 Microphone module and method for fabricating the same 有权
标题翻译：麦克风模块及其制造方法
公开(公告)号：US07657025B2
公开(公告)日：2010-02-02
申请号：US11457847
申请日：2006-07-17
申请人： Wei-Chan Hsu , Li-Te Wu , Bing-Ming Ho
发明人： Wei-Chan Hsu , Li-Te Wu , Bing-Ming Ho
IPC分类号： H04M1/00 , H04M9/00 , H04R25/00
CPC分类号： H04M1/03 , H01L2224/16225 , H01L2924/00011 , H01L2924/00014 , H01L2924/12044 , H01L2924/15151 , H01L2924/15311 , H01L2924/1815 , H01L2924/18161 , H04R19/04 , H05K1/181 , H05K3/284 , H05K2201/09072 , H05K2201/10083 , Y02P70/611 , H01L2924/00 , H01L2224/0401
摘要： A microphone module. The module comprises a carrier having a first side and an opposing second side and comprising a through hole. A microphone is disposed on the first side of the carrier and corresponding to the through hole. A processing chip is disposed on the first side of the carrier and coupled to the microphone. An encapsulant is disposed on the first side of the carrier to encapsulate the microphone and the processing chip.
摘要翻译：麦克风模块模块包括具有第一侧和相对的第二侧并包括通孔的载体。麦克风设置在载体的第一侧上并对应于通孔。处理芯片设置在载体的第一侧并且耦合到麦克风。密封剂设置在载体的第一侧上以封装麦克风和处理芯片。

15. 发明申请

US20090285415A1 INTERFACING CIRCUIT FOR A REMOVABLE MICROPHONE 有权
标题翻译：用于可移动麦克风的接口电路
公开(公告)号：US20090285415A1
公开(公告)日：2009-11-19
申请号：US12121105
申请日：2008-05-15
申请人： Li-Te Wu
发明人： Li-Te Wu
IPC分类号： H04R3/00
CPC分类号： H04R19/016 , H04R3/00
摘要： The invention provides an interfacing circuit for a removable microphone. In one embodiment, the interfacing circuit comprises a jack for receiving the removable microphone and an integrated circuit comprising a biasing circuit, a buffer amplifier, and an insertion detecting circuit. The jack comprises a first terminal receiving an output voltage of the removable microphone and a second terminal coupling the removable microphone to a ground voltage source. The integrated circuit is coupled to the first terminal of the jack via a first node. The biasing circuit, coupled between the first node and a second node, biases the removable microphone and passes only an alternative current (AC) portion of the output voltage of the removable microphone to the second node. The buffer amplifier, coupled to the second node, buffers the AC portion to generate a voltage signal. The insertion detecting circuit, coupled to the first node, generates an insertion signal indicating whether the removable microphone is inserted in the jack.
摘要翻译：本发明提供了一种用于可移动麦克风的接口电路。在一个实施例中，接口电路包括用于接收可移动麦克风的插座和包括偏置电路，缓冲放大器和插入检测电路的集成电路。插座包括接收可移动麦克风的输出电压的第一端子和将可移动麦克风耦合到接地电压源的第二端子。集成电路经由第一节点耦合到插座的第一端子。耦合在第一节点和第二节点之间的偏置电路偏置可移动麦克风，并且仅将可移除麦克风的输出电压的可选电流（AC）部分传递到第二节点。耦合到第二节点的缓冲放大器缓冲AC部分以产生电压信号。耦合到第一节点的插入检测电路产生指示可移动麦克风是否插入插孔中的插入信号。

16. 发明申请

US20090285414A1 AUDIO PROCESSING METHOD AND SYSTEM 有权
标题翻译：音频处理方法和系统
公开(公告)号：US20090285414A1
公开(公告)日：2009-11-19
申请号：US12121078
申请日：2008-05-15
申请人： Li-Te Wu
发明人： Li-Te Wu
IPC分类号： H04R3/06
CPC分类号： H04R19/016 , H04R3/06
摘要： An audio processing system is provided. The audio processing system comprises a transducer, a gain stage, a capacitor network, and a preamplifier. The transducer transduces a sound signal to a voltage signal. The gain stage comprises an input coupled to the transducer and an output. The capacitor network, coupled between the output of the gain stage and the transducer, provides an equivalent capacitance. The preamplifier coupled to the transducer amplifies the voltage signal.
摘要翻译：提供音频处理系统。音频处理系统包括换能器，增益级，电容器网络和前置放大器。传感器将声音信号转换成电压信号。增益级包括耦合到换能器和输出的输入。耦合在增益级的输出与换能器之间的电容器网络提供等效电容。耦合到换能器的前置放大器放大电压信号。

17. 发明申请

US20090285412A1 INTEGRATED CIRCUIT BIASING A MICROPHONE 有权
标题翻译：集成电路放大麦克风
公开(公告)号：US20090285412A1
公开(公告)日：2009-11-19
申请号：US12121131
申请日：2008-05-15
申请人： Li-Te Wu
发明人： Li-Te Wu
IPC分类号： H04R3/00 , H03F21/00
CPC分类号： H04R3/00 , H04R19/016
摘要： The invention provides an integrated circuit. The integrated circuit receives a first signal from a microphone via a first node. In one embodiment, the integrated circuit comprises a biasing circuit and a buffering circuit. The biasing circuit is coupled between the first node and a second node, drives the microphone with a first voltage source, and filters the first signal to generate a second signal at the second node. In one embodiment, the biasing circuit comprises a first resistor, a first capacitor, and a load element. The first resistor is coupled between the first voltage source and the first node. The first capacitor is coupled between the first node and the second node. The load element is coupled between the second node and a second voltage source. The buffering circuit is coupled between the second node and a third node and buffers the second signal to generate a third signal at the third node.
摘要翻译：本发明提供一种集成电路。集成电路经由第一节点从麦克风接收第一信号。在一个实施例中，集成电路包括偏置电路和缓冲电路。偏置电路耦合在第一节点和第二节点之间，用第一电压源驱动麦克风，并对第一信号进行滤波以在第二节点产生第二信号。在一个实施例中，偏置电路包括第一电阻器，第一电容器和负载元件。第一电阻器耦合在第一电压源和第一节点之间。第一电容器耦合在第一节点和第二节点之间。负载元件耦合在第二节点和第二电压源之间。缓冲电路耦合在第二节点和第三节点之间，并缓冲第二信号以在第三节点产生第三信号。

18. 发明申请

US20090169033A1 MICROPHONE MODULE WITH ELECTROMAGNETIC INTERFERENCE SHIELDING MEANS 有权
标题翻译：带电磁干扰屏蔽装置的麦克风模块
公开(公告)号：US20090169033A1
公开(公告)日：2009-07-02
申请号：US11964091
申请日：2007-12-26
申请人： Li-Te Wu , Yan-Li Lin
发明人： Li-Te Wu , Yan-Li Lin
IPC分类号： H04R3/00
CPC分类号： H04R31/006 , H04R19/016
摘要： A microphone module includes a cabinet, a sensor, an integrated circuit chip, a first substrate, and a second substrate. The first substrate carries the integrated circuit chip and includes a first top surface, a first bottom surface, and a first shielding part with a fixed electric potential extending from the first top surface to the first bottom surface. The second substrate includes a second top surface contacting the first bottom surface, a second bottom surface, and a second shielding part with the fixed electric potential on the second bottom surface, wherein the second shielding part is arranged in such a way that no electromagnetic waves can pass between the first shielding part and the second shielding part.
摘要翻译：麦克风模块包括机壳，传感器，集成电路芯片，第一基板和第二基板。第一基板承载集成电路芯片，并且包括第一顶表面，第一底表面和具有从第一顶表面延伸到第一底表面的固定电位的第一屏蔽部分。第二基板包括与第一底表面接触的第二顶表面，第二底表面和在第二底表面上具有固定电位的第二屏蔽部分，其中第二屏蔽部分被布置成使得没有电磁波可以在第一屏蔽部分和第二屏蔽部分之间通过。

19. 发明申请

US20090086992A1 MICROPHONE CIRCUIT AND CHARGE AMPLIFIER THEREOF 审中-公开
标题翻译：麦克风电路及其充电放大器
公开(公告)号：US20090086992A1
公开(公告)日：2009-04-02
申请号：US11862301
申请日：2007-09-27
申请人： Wei-Chan Hsu , Li-Te Wu , Yann-Ming Way
发明人： Wei-Chan Hsu , Li-Te Wu , Yann-Ming Way
IPC分类号： H04R3/00
CPC分类号： H04R3/00 , H03F3/187 , H03F3/70
摘要： The invention provides a microphone circuit. In one embodiment, the microphone circuit comprises a microphone, a self-biased amplifier with a finite gain, and a feedback capacitor. The microphone coupled between a ground and a first node generates a first voltage at the first node according to sound pressure. The self-biased amplifier has a positive input terminal coupled to the ground and a negative input terminal coupled to the first node and amplifies the first voltage according to the finite gain to generate a second voltage at a second node. The feedback capacitor coupled between the first node and the second node feeds back the second voltage to the first node. The second voltage is then output to a following module subsequent to the microphone circuit.
摘要翻译：本发明提供一种麦克风电路。在一个实施例中，麦克风电路包括麦克风，具有有限增益的自偏置放大器和反馈电容器。耦合在地和第一节点之间的麦克风根据声压产生第一节点处的第一电压。自偏置放大器具有耦合到地的正输入端和耦合到第一节点的负输入端，并且根据有限增益放大第一电压，以在第二节点处产生第二电压。耦合在第一节点和第二节点之间的反馈电容器将第二电压反馈到第一节点。然后在麦克风电路之后将第二电压输出到随后的模块。

20. 发明授权

US07385540B2 Method for mixing signals with an analog-to-digital converter 有权
标题翻译：用于将信号与模数转换器混合的方法
公开(公告)号：US07385540B2
公开(公告)日：2008-06-10
申请号：US11829157
申请日：2007-07-27
申请人： Li-Te Wu , Wei-Chan Hsu
发明人： Li-Te Wu , Wei-Chan Hsu
IPC分类号： H03M1/66
CPC分类号： H04S3/02
摘要： The invention provides a method for mixing signals with an analog-to-digital converter. The analog-to-digital converter receives a plurality of analog signals. First, the plurality of analog signals are respectively converted to a plurality of first datastreams with a plurality of first delta-sigma modulators. The plurality of first datastreams are then mixed to generate at least one second datastream. The at least one second datastream is then converted to at least one third datastream with at least one second delta-sigma modulator. The at least one second delta-sigma modulator and the plurality of first delta-sigma modulators are triggered by the same clock signal.
摘要翻译：本发明提供了一种用于将信号与模数转换器混合的方法。模数转换器接收多个模拟信号。首先，多个模拟信号分别被转换成具有多个第一Δ-Σ调制器的多个第一数据流。然后将多个第一数据流混合以产生至少一个第二数据流。然后将至少一个第二数据流转换成具有至少一个第二Δ-Σ调制器的至少一个第三数据流。所述至少一个第二Δ-Σ调制器和所述多个第一Δ-Σ调制器由相同的时钟信号触发。

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