公开(公告)号：US09186783B2

公开(公告)日：2015-11-17

申请号：US14238453

申请日：2012-01-16

申请人： Hao Wen ,  Junhua Shen

发明人： Hao Wen ,  Junhua Shen

IPC分类号： B25B23/00 ,  B25B15/00 ,  B25G1/08

CPC分类号： B25B23/0035 ,  B25B15/00 ,  B25G1/085

摘要： The present invention relates to an automatic bit-changing screwdriver including a bit tip and a bit shaft assembly. The bit tip and the bit shaft assembly are pivotably connected. Guided by the bit shaft assembly, the bit tip may rotate relative to the bit shaft assembly and change the tip without requiring direct manual contact with the bit tip. Particularly, the screwdriver includes a handle, a bit tip, a shaft and a shaft sleeve. The bit tip includes two sizes/styles of tips at two ends respectively. The bit tip is pivotably coupled to the shaft. The shaft is fixedly coupled to the handle. The shaft sleeve surrounds the shaft. The shaft and shaft sleeve are slidingly coupled together. Outwards sliding of the shaft sleeve drives the bit tip to rotate within the shaft to achieve bit-changing. A deep groove is formed on a front end of the shaft. The bit tip is disposed in the deep groove. A middle section of the shaft has a guide groove. The shaft sleeve is connected to the guide groove by a connecting element disposed along the guide groove. A slide guide block is fixedly positioned on the shaft sleeve facing a side of the shaft having the deep groove. The shaft sleeve has a notch. The notch is formed in a middle section of the shaft sleeve. A spring element is connected to the shaft sleeve. The spring element moves within the notch. The automatic bit-changing screwdriver provides a solution to a technical problem that the state of the art combination screwdrivers are generally inconvenient to change bits.

摘要翻译： 本发明涉及一种包括钻头刀头和钻头轴组件的自动钻头改头螺丝刀。 钻头尖端和钻头轴组件可枢转地连接。 在位轴组件的引导下，钻头尖端可以相对于钻头轴组件旋转并改变尖端，而不需要与钻头尖端直接手动接触。 特别地，螺丝刀包括把手，钻头尖端，轴和轴套。 该位尖端分别包括两端的两种尺寸/样式的尖端。 钻头尖端可枢转地联接到轴。 轴固定地联接到手柄。 轴套围绕轴。 轴和轴套滑动联接在一起。 轴套的向外滑动驱动钻头尖端在轴内旋转以实现位改变。 在轴的前端形成有深沟槽。 钻头尖端设置在深槽中。 轴的中间部分具有引导槽。 轴套通过沿引导槽设置的连接元件连接到引导槽。 滑动引导块固定地定位在轴套上，面向具有深槽的轴的侧面。 轴套有凹口。 凹口形成在轴套的中间部分。 弹簧元件连接到轴套。 弹簧元件在凹口内移动。 自动换头螺丝刀提供了技术问题的解决方案，即现有技术的组合螺丝刀通常不方便改变位。

公开(公告)号：US09143144B2

公开(公告)日：2015-09-22

申请号：US14005887

申请日：2012-03-19

申请人： Jayanth Kuppambatti ,  Junhua Shen ,  Peter Kinget

发明人： Jayanth Kuppambatti ,  Junhua Shen ,  Peter Kinget

IPC分类号： H03M1/12 ,  H03M1/00 ,  G06F1/08 ,  H03M1/44

CPC分类号： H03M1/002 ,  G06F1/08 ,  H03M1/1245 ,  H03M1/442

摘要： Systems comprising: a first MDAC stage comprising: a sub-ADC that outputs a value based on an input signal; at least two reference capacitors that are charged to a Vref; at least two sampling capacitors that are charged to a Vin; and a plurality of switches that couple the at least two reference capacitors so that they are charged during a sampling phase, that couple the at least two sampling capacitors so that they are charged during the sampling phase, that couple at least one of the reference capacitors so that it is parallel to one of the at least two sampling capacitors during a hold phase, and that couple the other of the at least two sampling capacitors so that it couples the at least one of the reference capacitors and the one of the at least two sampling capacitors to a reference capacitor of a second MDAC stage.

摘要翻译： 系统包括：第一MDAC级，包括：基于输入信号输出值的子ADC; 至少两个被充电到Vref的参考电容器; 至少两个采样电容器被充电到Vin; 以及多个开关，其耦合所述至少两个参考电容器，使得它们在采样阶段被充电，所述至少两个采样电容器耦合所述至少两个采样电容器，使得它们在采样阶段期间被充电，所述至少两个采样电容器将至少一个参考电容器 使得其在保持阶段期间平行于所述至少两个采样电容器中的一个，并且耦合所述至少两个采样电容器中的另一个，使得其耦合至少一个参考电容器和至少一个采样电容器 两个采样电容器到第二MDAC级的参考电容器。

公开(公告)号：US09071261B2

公开(公告)日：2015-06-30

申请号：US14043284

申请日：2013-10-01

申请人： Junhua Shen ,  Ronald A. Kapusta

发明人： Junhua Shen ,  Ronald A. Kapusta

IPC分类号： H03M1/44 ,  H03M1/08 ,  H03M1/46

CPC分类号： H03M1/0854 ,  H03M1/04 ,  H03M1/0697 ,  H03M1/46 ,  H03M1/462

摘要： Embodiments of the present invention may provide accuracy enhancement techniques to improve ADC SNRs. For example, regular bit trials from a most significant bit (MSB) to predetermined less significant bit of a digital word and extra bit trials may be performed. The results of the regular and extra bit trials may be combined to generate a digital output signal. A residue error may be measured, and the digital output signal may be adjusted based on the measured residue error.

摘要翻译： 本发明的实施例可以提供精度增强技术来提高ADC SNR。 例如，可以执行从最高有效位（MSB）到数字字的预定的较低有效位和额外的位试验的规则位测试。 常规和额外的比特试验的结果可以组合以产生数字输出信号。 可以测量残留误差，并且可以基于测量的残余误差来调整数字输出信号。

公开(公告)号：US20140132438A1

公开(公告)日：2014-05-15

申请号：US13993293

申请日：2011-12-12

申请人： Junhua Shen ,  Peter Kinget

发明人： Junhua Shen ,  Peter Kinget

IPC分类号： H03M1/12

CPC分类号： H03M1/12 ,  H03M1/164 ,  H03M1/442

摘要： Circuits and methods for implementing a residue amplifier are provided. In some embodiments, circuits for implementing a residue amplifier are provided, the circuits comprising: a first capacitor configured to be charged to an input voltage level and that discharges from the input voltage level to a reference voltage level; a comparator having a first input coupled to the first capacitor, a second input coupled to a reference voltage source, and an output that indicates when the charge on the first capacitor is above the reference voltage level; and a second capacitor configured to be charged to an output voltage based on the output of the comparator.

摘要翻译： 提供了实现残余放大器的电路和方法。 在一些实施例中，提供了用于实现残余放大器的电路，所述电路包括：第一电容器，被配置为被充电到输入电压电平，并且从输入电压电平放电到参考电压电平; 比较器，其具有耦合到第一电容器的第一输入端，耦合到参考电压源的第二输入端和指示第一电容器上的电荷何时高于参考电压电平的输出端; 以及第二电容器，被配置为基于比较器的输出而被充电到输出电压。

公开(公告)号：US09246504B2

公开(公告)日：2016-01-26

申请号：US13993293

申请日：2011-12-12

申请人： Junhua Shen ,  Peter Kinget

发明人： Junhua Shen ,  Peter Kinget

IPC分类号： H03M1/12 ,  H03M1/44 ,  H03M1/16

CPC分类号： H03M1/12 ,  H03M1/164 ,  H03M1/442

摘要： Circuits and methods for implementing a residue amplifier are provided. In some embodiments, circuits for implementing a residue amplifier are provided, the circuits comprising: a first capacitor configured to be charged to an input voltage level and that discharges from the input voltage level to a reference voltage level; a comparator having a first input coupled to the first capacitor, a second input coupled to a reference voltage source, and an output that indicates when the charge on the first capacitor is above the reference voltage level; and a second capacitor configured to be charged to an output voltage based on the output of the comparator.

摘要翻译： 提供了实现残余放大器的电路和方法。 在一些实施例中，提供了用于实现残余放大器的电路，所述电路包括：第一电容器，被配置为被充电到输入电压电平，并且从输入电压电平放电到参考电压电平; 比较器，其具有耦合到第一电容器的第一输入端，耦合到参考电压源的第二输入端和指示第一电容器上的电荷何时高于参考电压电平的输出端; 以及第二电容器，被配置为基于比较器的输出而被充电到输出电压。

公开(公告)号：US20160013803A1

公开(公告)日：2016-01-14

申请号：US14860074

申请日：2015-09-21

申请人： Jayanth Kuppambatti ,  Junhua Shen ,  Peter Kinget

发明人： Jayanth Kuppambatti ,  Junhua Shen ,  Peter Kinget

IPC分类号： H03M1/00 ,  H03M1/44 ,  H03M1/12

CPC分类号： H03M1/002 ,  G06F1/08 ,  H03M1/1245 ,  H03M1/442

摘要： Systems comprising: a first MDAC stage comprising: a sub-ADC that outputs a value based on an input signal; at least two reference capacitors that are charged to a Vref; at least two sampling capacitors that are charged to a Vin; and a plurality of switches that couple the at least two reference capacitors so that they are charged during a sampling phase, that couple the at least two sampling capacitors so that they are charged during the sampling phase, that couple at least one of the reference capacitors so that it is parallel to one of the at least two sampling capacitors during a hold phase, and that couple the other of the at least two sampling capacitors so that it couples the at least one of the reference capacitors and the one of the at least two sampling capacitors to a reference capacitor of a second MDAC stage.

摘要翻译： 系统包括：第一MDAC级，包括：基于输入信号输出值的子ADC; 至少两个被充电到Vref的参考电容器; 至少两个采样电容器被充电到Vin; 以及多个开关，其耦合所述至少两个参考电容器，使得它们在采样阶段被充电，所述至少两个采样电容器耦合所述至少两个采样电容器，使得它们在采样阶段期间被充电，所述至少两个采样电容器将至少一个参考电容器 使得其在保持阶段期间平行于所述至少两个采样电容器中的一个，并且耦合所述至少两个采样电容器中的另一个，使得其耦合至少一个参考电容器和至少一个采样电容器 两个采样电容器到第二MDAC级的参考电容器。

公开(公告)号：US20150091744A1

公开(公告)日：2015-04-02

申请号：US14043284

申请日：2013-10-01

申请人： Junhua SHEN ,  Ronald A. KAPUSTA

发明人： Junhua SHEN ,  Ronald A. KAPUSTA

IPC分类号： H03M1/08 ,  H03M1/46

CPC分类号： H03M1/0854 ,  H03M1/04 ,  H03M1/0697 ,  H03M1/46 ,  H03M1/462

摘要： Embodiments of the present invention may provide accuracy enhancement techniques to improve ADC SNRs. For example, regular bit trials from a most significant bit (MSB) to predetermined less significant bit of a digital word and extra bit trials may be performed. The results of the regular and extra bit trials may be combined to generate a digital output signal. A residue error may be measured, and the digital output signal may be adjusted based on the measured residue error.

摘要翻译： 本发明的实施例可以提供精度增强技术来提高ADC SNR。 例如，可以执行从最高有效位（MSB）到数字字的预定的较低有效位和额外的位试验的规则位测试。 常规和额外的比特试验的结果可以组合以产生数字输出信号。 可以测量残留误差，并且可以基于测量的残余误差来调整数字输出信号。

公开(公告)号：US08981972B2

公开(公告)日：2015-03-17

申请号：US14028767

申请日：2013-09-17

申请人： Junhua Shen ,  Ronald A. Kapusta ,  Edward C. Guthrie

发明人： Junhua Shen ,  Ronald A. Kapusta ,  Edward C. Guthrie

IPC分类号： H03M1/06 ,  H03M1/38 ,  H03M1/10 ,  H03M1/16 ,  H03M1/44 ,  H03M1/46

CPC分类号： H03M1/38 ,  H03M1/1019 ,  H03M1/164 ,  H03M1/44 ,  H03M1/46

摘要： Embodiments of the present invention may provide an analog-to-digital converter (ADC) system. The ADC system may include an analog circuit to receive an input signal and a reference voltage, and to convert the input signal into a raw digital output. The analog circuit may include at least one sampling element to sample the input signal during a sampling phase and reused to connect to the reference voltage during a conversion phase, and an ADC output to output the raw digital output. The ADC system may also include a digital processor to receive the raw digital output and for each clock cycle, to digitally correct reference voltage errors in the analog-to-digital conversion.

摘要翻译： 本发明的实施例可以提供一种模数转换器（ADC）系统。 ADC系统可以包括用于接收输入信号和参考电压的模拟电路，并且将输入信号转换成原始数字输出。 模拟电路可以包括至少一个采样元件，以在采样阶段期间对输入信号进行采样，并且在转换阶段期间再次用于连接到参考电压，以及ADC输出以输出原始数字输出。 ADC系统还可以包括用于接收原始数字输出和每个时钟周期的数字处理器，以数字地校正模数转换中的参考电压误差。

公开(公告)号：US20140290448A1

公开(公告)日：2014-10-02

申请号：US14238453

申请日：2012-01-16

申请人： Hao Wen ,  Junhua Shen

发明人： Hao Wen ,  Junhua Shen

IPC分类号： B25B23/00

CPC分类号： B25B23/0035 ,  B25B15/00 ,  B25G1/085

摘要： The present invention relates to an automatic bit-changing screwdriver including a bit tip and a bit shaft assembly. The bit tip and the bit shaft assembly are pivotably connected. Guided by the bit shaft assembly, the bit tip may rotate relative to the bit shaft assembly and change the tip without requiring direct manual contact with the bit tip. Particularly, the screwdriver includes a handle, a bit tip, a shaft and a shaft sleeve. The bit tip includes two sizes/styles of tips at two ends respectively. The bit tip is pivotably coupled to the shaft. The shaft is fixedly coupled to the handle. The shaft sleeve surrounds the shaft. The shaft and shaft sleeve are slidingly coupled together. Outwards sliding of the shaft sleeve drives the bit tip to rotate within the shaft to achieve bit-changing. A deep groove is formed on a front end of the shaft. The bit tip is disposed in the deep groove. A middle section of the shaft has a guide groove. The shaft sleeve is connected to the guide groove by a connecting element disposed along the guide groove. A slide guide block is fixedly positioned on the shaft sleeve facing a side of the shaft having the deep groove. The shaft sleeve has a notch. The notch is formed in a middle section of the shaft sleeve. A spring element is connected to the shaft sleeve. The spring element moves within the notch. The automatic bit-changing screwdriver provides a solution to a technical problem that the state of the art combination screwdrivers are generally inconvenient to change bits.

摘要翻译： 本发明涉及一种包括钻头刀头和钻头轴组件的自动钻头改头螺丝刀。 钻头尖端和钻头轴组件可枢转地连接。 在位轴组件的引导下，钻头尖端可以相对于钻头轴组件旋转并改变尖端，而不需要与钻头尖端直接手动接触。 特别地，螺丝刀包括把手，钻头尖端，轴和轴套。 该位尖端分别包括两端的两种尺寸/样式的尖端。 钻头尖端可枢转地联接到轴。 轴固定地联接到手柄。 轴套围绕轴。 轴和轴套滑动联接在一起。 轴套的向外滑动驱动钻头尖端在轴内旋转以实现位改变。 在轴的前端形成有深沟槽。 钻头尖端设置在深槽中。 轴的中间部分具有引导槽。 轴套通过沿引导槽设置的连接元件连接到引导槽。 滑动引导块固定地定位在轴套上，面向具有深槽的轴的侧面。 轴套有凹口。 凹口形成在轴套的中间部分。 弹簧元件连接到轴套。 弹簧元件在凹口内移动。 自动换头螺丝刀提供了技术问题的解决方案，即现有技术的组合螺丝刀通常不方便改变位。

公开(公告)号：US08514114B2

公开(公告)日：2013-08-20

申请号：US13312036

申请日：2011-12-06

申请人： Ronald A. Kapusta ,  Junhua Shen

发明人： Ronald A. Kapusta ,  Junhua Shen

IPC分类号： H03M1/10

CPC分类号： H03M1/1057 ,  H03M1/442 ,  H03M1/46 ,  H03M1/466 ,  H03M1/745 ,  H03M1/80 ,  H03M1/804 ,  H03M1/808

摘要： An uncalibrated converter element in an analog-digital converter may be replaced with two or more smaller elements having an effective total net value that is equal to that of the uncalibrated converter element. In an exemplary case where the element is capacitor, one or more of these smaller capacitors may be independently calibrated by switching the smaller capacitor between two voltages, such as a reference voltage and ground, and then calculating a difference of corresponding digital output codes generated by the backend ADC with previously calibrated capacitors associated with lesser significant bits. The total capacitance of the uncalibrated capacitor may be apportioned between the smaller capacitors so that the individual maximum charge contribution of each smaller capacitor to the converter output together with any expected manufacturing variance does not exceed the aggregated contribution of the previously calibrated capacitors.

摘要翻译： 模拟数字转换器中的未校准的转换器元件可以被两个或更多个具有与未校准的转换器元件的有效总净值相等的较小元件替代。 在元件是电容器的示例性情况下，可以通过在诸如参考电压和地之间的两个电压之间切换较小的电容器来独立地校准这些较小电容器中的一个或多个，然后计算由相应的数字输出代码 具有先前校准的电容器的后端ADC与较低有效位相关联。 未校准的电容器的总电容可以在较小的电容器之间分配，使得每个较小的电容器对转换器输出的单独的最大电荷贡献以及任何预期的制造方差不超过先前校准的电容器的累积贡献。