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1. 发明申请

US20130200872A1 LOW POWER CURRENT COMPARATOR FOR SWITCHED MODE REGULATOR 有权
标题翻译：用于开关模式调节器的低功耗电流比较器
公开(公告)号：US20130200872A1
公开(公告)日：2013-08-08
申请号：US13755575
申请日：2013-01-31
申请人： Brian W. Friend , Kyehyung Lee
发明人： Brian W. Friend , Kyehyung Lee
IPC分类号： G05F1/10
CPC分类号： G05F1/10 , G05F3/24
摘要： A current comparator comprising a first NMOS transistor having a drain coupled to VDD, a source and a gate. A first PMOS transistor having a source coupled to the source of the first NMOS transistor to form an input, a drain coupled to VSS and a gate coupled to the gate of the first NMOS transistor. A second NMOS transistor having a drain coupled to VDD, a source and a gate coupled to the input. A first bias current source having an input coupled to the source of the second NMOS transistor and an output. A second bias current source having an input coupled to the drain of the first NMOS transistor and an output coupled to the gate of the first NMOS transistor. A third NMOS transistor having a drain coupled to the gate of the first NMOS transistor to form an output, a source and a gate.
摘要翻译：一种电流比较器，包括具有耦合到VDD的漏极，源极和栅极的第一NMOS晶体管。第一PMOS晶体管，具有耦合到第一NMOS晶体管的源极以形成输入的源极，耦合到VSS的漏极和耦合到第一NMOS晶体管的栅极的栅极。具有耦合到VDD的漏极，耦合到输入的源极和栅极的第二NMOS晶体管。第一偏置电流源，其具有耦合到第二NMOS晶体管的源极的输入端和输出端。第二偏置电流源具有耦合到第一NMOS晶体管的漏极的输入端和耦合到第一NMOS晶体管的栅极的输出。第三NMOS晶体管，具有耦合到第一NMOS晶体管的栅极以形成输出，源极和栅极的漏极。

2. 发明授权

US06218977B1 Methods and apparatus for distributing mismatched error associated with data converter elements 失效
标题翻译：用于分配与数据转换器元件相关联的不匹配错误的方法和装置
公开(公告)号：US06218977B1
公开(公告)日：2001-04-17
申请号：US09160735
申请日：1998-09-25
申请人： Brian W. Friend , Daniel L. Essig , Stelian Mocanita
发明人： Brian W. Friend , Daniel L. Essig , Stelian Mocanita
IPC分类号： H03M134
CPC分类号： H03M1/0668 , H03M1/74 , H03M3/464
摘要： A circuit for implementing a first order noise shaping apparatus for use in data converters employing thermometer-code based elements is disclosed. Raw thermometer code is rotated by up to four columns of shifters such that the code is rotated up to 15 positions. In this manner, the elements of the data converter may equally participate in the conversion process, thereby minimizing the effects of mismatched elements in a data converter by distributing errors due to mismatched elements. Such a process may be used in digital to analog converters and analog to digital converters such that a suitable data weighted algorithm can be used.
摘要翻译：公开了一种实现用于采用基于温度计代码的元件的数据转换器中的一阶噪声整形装置的电路。原始温度计代码最多旋转四列移位器，使代码旋转最多15个位置。以这种方式，数据转换器的元件可以同样地参与转换处理，从而通过分配由于不匹配的元素引起的错误来最小化数据转换器中的不匹配元件的影响。这样的过程可以用于数模转换器和模数转换器，从而可以使用合适的数据加权算法。

3. 发明授权

US09319768B2 Multi-standard headset support with integrated ground switching 有权
标题翻译：多标准耳机支持集成接地切换
公开(公告)号：US09319768B2
公开(公告)日：2016-04-19
申请号：US13312897
申请日：2011-12-06
申请人： Christian Larsen , Lorenzo Crespi , Brian W. Friend
发明人： Christian Larsen , Lorenzo Crespi , Brian W. Friend
IPC分类号： H04R5/033 , H04R1/10 , H01R24/58
CPC分类号： H04R1/1041 , H01R24/58 , H04R2201/107 , H04R2420/05 , H04R2420/09
摘要： A system for detecting a jack configuration comprising a first plurality of switches configured to couple a first headphone jack position to ground. A second plurality of switches configured to couple a second headphone jack position to ground. A microphone bias circuit for applying a microphone bias signal to the second headphone jack position when the first headphone jack position is coupled to ground, and for applying the microphone bias signal to the first headphone jack position when the second headphone jack position is coupled to ground.
摘要翻译：一种用于检测插座结构的系统，包括配置成将第一耳机插孔位置耦合到地的第一多个开关。配置成将第二耳机插孔位置耦合到地的第二多个开关。麦克风偏置电路，用于当第一耳机插孔位置耦合到地面时将麦克风偏置信号施加到第二耳机插孔位置，并且当第二耳机插孔位置耦合到地面时将麦克风偏置信号施加到第一耳机插孔位置。

4. 发明申请

US20130142350A1 MULTI-STANDARD HEADSET SUPPORT WITH INTEGRATED GROUND SWITCHING 有权
标题翻译：多标准耳机支持与集成式接地切换
公开(公告)号：US20130142350A1
公开(公告)日：2013-06-06
申请号：US13312897
申请日：2011-12-06
申请人： Christian Larsen , Lorenzo Crespi , Brian W. Friend
发明人： Christian Larsen , Lorenzo Crespi , Brian W. Friend
IPC分类号： H04R1/10
CPC分类号： H04R1/1041 , H01R24/58 , H04R2201/107 , H04R2420/05 , H04R2420/09
摘要： A system for detecting a jack configuration comprising a first plurality of switches configured to couple a first headphone jack position to ground. A second plurality of switches configured to couple a second headphone jack position to ground. A microphone bias circuit for applying a microphone bias signal to the second headphone jack position when the first headphone jack position is coupled to ground, and for applying the microphone bias signal to the first headphone jack position when the second headphone jack position is coupled to ground.
摘要翻译：一种用于检测插座结构的系统，包括配置成将第一耳机插孔位置耦合到地的第一多个开关。配置成将第二耳机插孔位置耦合到地的第二多个开关。麦克风偏置电路，用于当第一耳机插孔位置耦合到地面时将麦克风偏置信号施加到第二耳机插孔位置，并且当第二耳机插孔位置耦合到地面时将麦克风偏置信号施加到第一耳机插孔位置。

5. 发明申请

US20130099857A1 AUDIO PROGRAMMABLE GAIN AMPLIFIER WITH AUTOMATIC RECONFIGURATION 有权
标题翻译：具有自动重新配置的音频可编程增益放大器
公开(公告)号：US20130099857A1
公开(公告)日：2013-04-25
申请号：US13280221
申请日：2011-10-24
申请人： Brian W. Friend , Christian Larsen
发明人： Brian W. Friend , Christian Larsen
IPC分类号： H03F3/45 , H03G3/20
CPC分类号： H03F3/187 , H03F3/45475 , H03F3/45928 , H03F2200/261 , H03F2200/453 , H03F2203/45356 , H03F2203/45528 , H03F2203/45536 , H03F2203/45544 , H03F2203/45616 , H03F2203/45696 , H03F2203/45702 , H03G1/0088
摘要： A reconfigurable amplifier comprising a first operational amplifier having two inputs and an output. A second operational amplifier having two inputs and an output. A plurality of switches coupled to the two inputs and the output of the first operational amplifier and the two inputs and the output of the second operational amplifier, wherein a first configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as an inverting differential input amplifier, and wherein a second configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as a non-inverting differential input instrumentation amplifier.
摘要翻译：一种可重构放大器，包括具有两个输入和一个输出的第一运算放大器。具有两个输入和一个输出的第二运算放大器。耦合到两个输入的多个开关和第一运算放大器的输出以及第二运算放大器的两个输入和输出，其中多个开关的第一配置使得第一运算放大器和第二运算放大器用作反相差分输入放大器，并且其中多个开关的第二配置使得第一运算放大器和第二运算放大器作为非反相差分输入仪表放大器工作。

6. 发明授权

US08581661B2 Audio programmable gain amplifier with automatic reconfiguration 有权
标题翻译：具有自动重构功能的音频可编程增益放大器
公开(公告)号：US08581661B2
公开(公告)日：2013-11-12
申请号：US13280221
申请日：2011-10-24
申请人： Brian W. Friend , Christian Larsen
发明人： Brian W. Friend , Christian Larsen
IPC分类号： H03F3/45
CPC分类号： H03F3/187 , H03F3/45475 , H03F3/45928 , H03F2200/261 , H03F2200/453 , H03F2203/45356 , H03F2203/45528 , H03F2203/45536 , H03F2203/45544 , H03F2203/45616 , H03F2203/45696 , H03F2203/45702 , H03G1/0088
摘要： A reconfigurable amplifier comprising a first operational amplifier having two inputs and an output. A second operational amplifier having two inputs and an output. A plurality of switches coupled to the two inputs and the output of the first operational amplifier and the two inputs and the output of the second operational amplifier, wherein a first configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as an inverting differential input amplifier, and wherein a second configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as a non-inverting differential input instrumentation amplifier.
摘要翻译：一种可重构放大器，包括具有两个输入和一个输出的第一运算放大器。具有两个输入和一个输出的第二运算放大器。耦合到两个输入的多个开关和第一运算放大器的输出以及第二运算放大器的两个输入和输出，其中多个开关的第一配置使得第一运算放大器和第二运算放大器用作反相差分输入放大器，并且其中多个开关的第二配置使得第一运算放大器和第二运算放大器作为非反相差分输入仪表放大器工作。

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