公开(公告)号：US5386988A

公开(公告)日：1995-02-07

申请号：US70886

申请日：1993-06-03

申请人： Lan C. Sung ,  Chin M. Huang ,  Lan K. Sung

发明人： Lan C. Sung ,  Chin M. Huang ,  Lan K. Sung

IPC分类号： A63B69/00 ,  A63B69/38

CPC分类号： A63B69/0079 ,  A63B69/0091 ,  A63B69/38

摘要： A tennis practicing device includes a foldable base frame assembly, a tube pivotally mounted on the base frame assembly, and a ball returning assembly mounted in the tube. The ball returning assembly includes a tubular member consisting of an upper elastomeric section and a lower rigid section, a spring position in the tubular member, and a connecting member. A tennis ball is pre-drilled in its diameter before it is mounted to the ball returning assembly. The connecting member passes through the holes of the ball until an enlarged head end of the member grips the surface of the ball. A first end of the spring is attached to a tail end of the connecting member and the second end of the spring is attached to the lower end of the lower rigid section. The tube has a engaging means, in the form of a knob in an upper portion of the tube to clamp releasably the ball returning means.

摘要翻译： 网球练习装置包括可折叠底架组件，可枢转地安装在基架组件上的管和安装在管中的球返回组件。 球返回组件包括由上弹性体部分和下部刚性部分组成的管状部件，管状部件中的弹簧位置和连接部件。 在安装到球返回组件之前，网球预先在其直径上预钻。 连接构件穿过球的孔，直到构件的扩大头端夹住球的表面。 弹簧的第一端附接到连接构件的尾端，并且弹簧的第二端附接到下部刚性部分的下端。 管具有在管的上部中的旋钮形式的接合装置，以可释放地夹紧球返回装置。

公开(公告)号：US4699378A

公开(公告)日：1987-10-13

申请号：US884032

申请日：1986-07-10

申请人： Lan C. Sung

发明人： Lan C. Sung

IPC分类号： A63B69/40

CPC分类号： A63B69/408

摘要： A tennis ball throwing machine which comprises a motor secured to a frame board, the output end of the motor shaft having a gear wheel securely mounted thereon, first and second transmission shaft respectively fixed to a gear wheel at one end thereof and engaged with the gear wheel of the motor, a bat pivotally attached to the first transmission shaft, one end of the bat being a hitting portion, and the other end thereof being attached to a tension spring, a cam pivoted on the second transmission shaft, a ball guiding groove being pivoted on a supporting shaft and having a portion thereof in contact with the cam to move upward, downward, leftward and rightward, a tension spring at the bottom end of the ball guide groove. The axis of the cam which is eccentric with and at an angle relative to the second transmission shaft, and two guiding boards are provided beneath the ball guiding groove, the two guiding boards being clamped on both sides of the cam whereby the ball guiding groove driven by the cam may move upward, downward, leftward and rightward to change the throwing direction.

摘要翻译： 一种网球投掷机，其特征在于，包括固定在框架板上的马达，马达轴的输出端具有安装在其上的齿轮，第一和第二传动轴分别固定在齿轮的一端并啮合齿轮 电动机的转轮，以第一传动轴为枢轴转动的蝙蝠，蝙蝠的一端为撞击部，另一端安装在拉伸弹簧上，枢转于第二传动轴上的凸轮，球引导槽 在支撑轴上枢转，并且其一部分与凸轮接触以向上，向下，向左和向右移动，在球引导槽的底端处具有拉伸弹簧。 相对于第二传动轴偏心并相对于第二传动轴的凸轮的轴线和两个引导板设置在球引导槽的下方，两个引导板被夹紧在凸轮的两侧，由此滚珠引导槽驱动 通过凸轮可以向上，向下，向左和向右移动以改变投掷方向。

公开(公告)号：US09642798B2

公开(公告)日：2017-05-09

申请号：US13876312

申请日：2011-09-29

申请人： Michael M. Lipp ,  Jean C. Sung

发明人： Michael M. Lipp ,  Jean C. Sung

IPC分类号： A61K9/00 ,  A61K31/137 ,  A61K31/407 ,  A61K31/4745 ,  A61K31/5383 ,  A61K31/56 ,  A61K38/00 ,  A61K38/28 ,  A61K39/00

CPC分类号： A61K9/0073 ,  A61K9/0075 ,  A61K31/137 ,  A61K31/407 ,  A61K31/439 ,  A61K31/4745 ,  A61K31/496 ,  A61K31/5383 ,  A61K31/56 ,  A61K31/58 ,  A61K31/7036 ,  A61K38/00 ,  A61K38/28 ,  A61K39/00 ,  A61K39/395 ,  A61K2300/00

摘要： The present invention is directed toward respirable dry powders and particles for systemic delivery of pharmaceutically active agents or delivery to the respiratory tract. The dry powders contain one or more monovalent metal cations (such as Na+), are small and dispersible.

公开(公告)号：US06731155B2

公开(公告)日：2004-05-04

申请号：US10308775

申请日：2002-12-03

申请人： J. Mikko Hakkarainen ,  Kantilal Bacrania ,  Eric C. Sung ,  Hsin-Shu Chen ,  Bang-Sup Song ,  Mario Sanchez

发明人： J. Mikko Hakkarainen ,  Kantilal Bacrania ,  Eric C. Sung ,  Hsin-Shu Chen ,  Bang-Sup Song ,  Mario Sanchez

IPC分类号： H03K1716

CPC分类号： H03M1/165 ,  H03M1/365

摘要： A dual pump circuit including a transmission gate and a dual charge pump. The transmission gate includes a p-channel transistor and an n-channel transistor, each having a control terminal and a pair of current terminals coupled between a dual pump input and a dual pump output. The dual charge pump includes first and second pump circuits, where each pump circuit is coupled to the dual pump input and to a control terminal of a corresponding one of the transmission gate transistors. Each pump circuit is operative to linearize operation of its corresponding transmission gate transistor by maintaining VGS—VT constant. The dual pump circuit is used in a track and hold circuit including at least one dual pump sampling circuit, at least one sampling capacitor, and a control circuit for controlling input signal sampling timing. Each dual pump sampling circuit includes the transmission gate and a dual charge pump.

摘要翻译： 双泵电路，包括传输门和双电荷泵。 传输门包括一个p沟道晶体管和一个n沟道晶体管，每个具有一个控制端子和一对电流端子，耦合在一个双泵输入端和一个双泵输出端之间。 双电荷泵包括第一和第二泵电路，其中每个泵电路耦合到双泵输入和相应的一个传输栅晶体管的控制端。 每个泵电路通过维持VGS-VT恒定而使其对应的传输门晶体管的操作线性化。 双泵电路用于包括至少一个双泵采样电路，至少一个采样电容器和用于控制输入信号采样定时的控制电路的跟踪和保持电路。 每个双泵采样电路包括传输门和双电荷泵。

公开(公告)号：US06628216B2

公开(公告)日：2003-09-30

申请号：US10207340

申请日：2002-07-29

申请人： Hsin-Shu Chen ,  Kantilal Bacrania ,  Eric C. Sung ,  J. Mikko Hakkarainen ,  Bang-Sup Song ,  Brian L. Allen ,  Mario Sanchez

发明人： Hsin-Shu Chen ,  Kantilal Bacrania ,  Eric C. Sung ,  J. Mikko Hakkarainen ,  Bang-Sup Song ,  Brian L. Allen ,  Mario Sanchez

IPC分类号： H03M110

CPC分类号： H03M1/165 ,  H03M1/365

摘要： A calibration system and method for a resistor ladder that employs relative measurement and adjustment between pairs of resistors. The system includes a resistor tree of complementary pairs of programmable resistors coupled to the resistor ladder, a measurement circuit that measures voltage differences between complementary pairs of programmable resistors, and control logic. The control logic controls the measurement circuit to measure a voltage difference between each complementary pair of programmable resistors and adjusts the relative resistance of each complementary pair of programmable resistors to equalize voltage. The measurement is facilitated by a sigma-delta ADC that converts a measured voltage difference into a bit stream. The programmable resistors are implemented with binary weighted resistors that are digitally adjusted one LSB at a time. Lower and upper adjustment thresholds may be employed to avoid unnecessary over-adjustments while maintaining a requisite level of accuracy.

摘要翻译： 一种用于电阻梯的校准系统和方法，其采用电阻对之间的相对测量和调整。 该系统包括耦合到电阻梯的互补对可编程电阻器的电阻树，测量电路，其测量互补对可编程电阻器和控制逻辑之间的电压差。 控制逻辑控制测量电路来测量每对互补的可编程电阻之间的电压差，并调整每对互补可编程电阻对的相对电阻以均衡电压。 通过将测量的电压差转换为比特流的Σ-ΔADC便于测量。 可编程电阻通过二进制加权电阻实现，每次一个LSB​​数字调节。 可以采用较低和较高的调整阈值，以避免不必要的过度调整，同时保持必要的精度水平。

公开(公告)号：US06570523B1

公开(公告)日：2003-05-27

申请号：US10097677

申请日：2002-03-13

申请人： Kantilal Bacrania ,  Hsin-Shu Chen ,  Eric C. Sung ,  Bang-Sup Song ,  J. Mikko Hakkarainen ,  Brian L. Allen ,  Mario Sanchez

发明人： Kantilal Bacrania ,  Hsin-Shu Chen ,  Eric C. Sung ,  Bang-Sup Song ,  J. Mikko Hakkarainen ,  Brian L. Allen ,  Mario Sanchez

IPC分类号： H03M112

CPC分类号： H03M1/165 ,  H03M1/365

摘要： A multistage ADC that subranges and interpolates, and that amplifies selected subranges to convert an analog signal to a stream of digital values. The ADC samples the analog signal and provides a stream of sample signals. A first stage flash converts each sample signal into a first multiple bit value and subranges a reference ladder according to the first multiple bit value into selected reference signals. Each additional secondary stage amplifies a selected subrange of signals from a prior stage, flash converts the amplified residual signals to provide an additional multiple bit value, interpolates each set of amplified residual signals and subranges the interpolated signals according to the corresponding multiple bit value. A final stage amplifies and flash converts to determine a final multiple bit value. An error corrector combines each set of multiple bit values into a digital value.

摘要翻译： 一种多级ADC，用于对所选择的子范围进行放大和内插，以将模拟信号转换为数字值流。 ADC对模拟信号进行采样，并提供一个采样信号流。 第一级闪存将每个采样信号转换为第一多位值，并将根据第一多位值的参考梯形图子化为选定的参考信号。 每个附加的次级放大来自前一级的所选择的子信号，闪存转换放大的残留信号以提供附加的多位值，内插每组放大的残留信号，并根据相应的多位值对内插信号进行子范围调整。 最后一级放大并进行闪存转换，以确定最终的多位值。 误差校正器将每组多个位值组合成一个数字值。