公开(公告)号：US5942942A

公开(公告)日：1999-08-24

申请号：US940791

申请日：1997-09-30

Applicant: Yen-Hui Wang

Inventor： Yen-Hui Wang

IPC: G06F3/038 ,  H03F3/00 ,  H03F3/08 ,  H03F3/45

CPC classification number: G06F3/038 ,  H03F3/005 ,  H03F3/082 ,  H03F3/45192 ,  H03F3/45659

Abstract: A differential amplifier with double output stages used to eliminate the charge injection noise and switching capacitor noise is disclosed. This system includes an input stage, a middle stage, a first balanced output stage, a second balanced output stage, a negative feedback network and a common mode feedback network. The input stage processing the differential input signal, connects to the middle stage and the negative feedback network which increasing the gain of input signal and connects to the first balanced output stage and second balanced output stage. The first balanced output stage is connected to the negative feedback network for stabilizing the frequency response, and the second balanced output stage is connected to the common mode feedback network for controlling the common level of double terminals output into a setting range of voltage. Thus the output signal of the amplifier will be a clear waveform without redundant noise for next connecting circuit.

Abstract translation: 公开了一种具有双输出级的差分放大器，用于消除电荷注入噪声和开关电容噪声。 该系统包括输入级，中级，第一平衡输出级，第二平衡输出级，负反馈网络和共模反馈网络。 输入级处理差分输入信号，连接到中间级和负反馈网络，增加输入信号的增益，并连接到第一平衡输出级和第二平衡输出级。 第一平衡输出级连接到负反馈网络，用于稳定频率响应，第二平衡输出级连接到共模反馈网络，用于将双端子输出的公共电平控制在电压设定范围内。 因此，放大器的输出信号将是清晰的波形，无需下一个连接电路的冗余噪声。

公开(公告)号：US5647005A

公开(公告)日：1997-07-08

申请号：US494277

申请日：1995-06-23

Applicant: Yen-Hui Wang ,  Der-Chwan Wu

Inventor： Yen-Hui Wang ,  Der-Chwan Wu

IPC: G10H1/20 ,  G10H7/00 ,  H04R3/00 ,  H03G3/00

CPC classification number: H04R3/00 ,  G10H1/20 ,  G10H7/008

Abstract: A method is disclosed of modification of parameters of audio signals by dividing a digital signal converted from an original analog signal into sound frames, modifying a pitch and a playing rate of the digital signal within a frame and subsequent successive splicing a last modified frame with a first non-modified frame and calculating a differential mean absolute error to define the best splicing point in terms of producing minimal or no audible noise such that various sections of sound signals can be spliced together to achieve pitch and playing rate modification. An apparatus is also disclosed for implementing the method, the apparatus comprising input and output amplifiers, a low pass filter at the input and a low pass filter at the output, analog-to-digital and digital-to-analog converters, and a pitch shifting processor.

Abstract translation: 公开了一种通过将从原始模拟信号转换成的数字信号分成声音帧来修改音频信号的参数的方法，修改帧内的数字信号的音调和播放速率，并且随后使用 第一非修改帧并计算差分平均绝对误差，以便在产生最小或不可听见的噪声方面定义最佳拼接点，使得声音信号的各个部分可以拼接在一起以实现音调和播放速率修改。 还公开了一种用于实现该方法的装置，该装置包括输入和输出放大器，输入端的低通滤波器和输出模数转换器和数/模转换器之间的低通滤波器，以及间距 移位处理器

公开(公告)号：US08720310B2

公开(公告)日：2014-05-13

申请号：US13460935

申请日：2012-05-01

Applicant: Yen-Hui Wang ,  Sin-Heng Wang ,  Tsun-Te Wang

Inventor： Yen-Hui Wang ,  Sin-Heng Wang ,  Tsun-Te Wang

IPC: B25B13/06 ,  B25B13/00 ,  B25B23/00

CPC classification number: B25B13/06 ,  B25B13/48 ,  B25B23/00 ,  B60B29/003

Abstract: A socket wrench includes a handle and an actuating head connected with the handle. The handle has a first end provided with a mounting portion and a second end provided with a grip. The mounting portion of the handle has an inner wall provided with a pivot hole pivotally mounted on the actuating head and has an outer wall provided with a first driving arm and a second driving arm. The actuating head has an upper end provided with an extension which has a distal end provided with an elongate guide slot. Each of the first driving arm and the second driving arm of the handle is slidably mounted in the guide slot of the actuating head. The actuating head has a lower end inserted into a socket which is mounted on one bolt of a wheel.

Abstract translation: 套筒扳手包括手柄和与把手连接的致动头。 手柄具有设置有安装部分的第一端和设置有把手的第二端。 手柄的安装部分具有设置有可枢转地安装在致动头上的枢轴孔的内壁，并且具有设置有第一驱动臂和第二驱动臂的外壁。 致动头具有设置有延伸部的上端，该延伸部的远端设置有细长的导槽。 手柄的第一驱动臂和第二驱动臂中的每一个可滑动地安装在致动头的引导槽中。 致动头具有插入到安装在车轮的一个螺栓上的插座中的下端。

公开(公告)号：US08664870B2

公开(公告)日：2014-03-04

申请号：US13428831

申请日：2012-03-23

Applicant: Wei-Chuan Su ,  Pen-Li Chou ,  Yen-Hui Wang

Inventor： Wei-Chuan Su ,  Pen-Li Chou ,  Yen-Hui Wang

IPC: H05B41/14 ,  H05B39/00 ,  H05B37/00

CPC classification number: H05B33/0812 ,  Y02B20/345

Abstract: A cascoded current regulator, including: a first load circuit, having a first load and a current source unit; and a second load circuit, being cascaded with the first load circuit and having a second load and a current mirror unit, wherein a first current flowing through the first load and a second current flowing through the current source unit are controlled by a control voltage, and a third current flowing through the second load and a fourth current flowing through the current mirror unit are generated according to the second current.

Abstract translation: 一种级联电流调节器，包括：具有第一负载和电流源单元的第一负载电路; 以及与所述第一负载电路级联并具有第二负载和电流镜单元的第二负载电路，其中流过所述第一负载的第一电流和流过所述电流源单元的第二电流由控制电压控制， 并且根据第二电流产生流过第二负载的第三电流和流过电流镜单元的第四电流。

公开(公告)号：US20140042925A1

公开(公告)日：2014-02-13

申请号：US13569749

申请日：2012-08-08

Applicant: Yen-Hui Wang

Inventor： Yen-Hui Wang

IPC: H05B37/00

CPC classification number: H05B33/083

Abstract: A PFC LED driver capable of reducing current ripple, comprising: a current source unit, having a control terminal coupled to a control voltage, which is a ratio of a full-wave rectified line input voltage, a first channel terminal coupled to a power line, and a second channel terminal used to generate an output current according to the control voltage; and at least one LED load unit, being in series with the current source unit, wherein each of the at least one LED load unit comprises: a first load, including a first parallel combination of an LED module and a capacitor, wherein the LED module has at least one light emitting diode; a diode, being in a first series combination with the first load; and a switch, being in a second parallel combination with the second series combination.

Abstract translation: 一种能够减小电流纹波的PFC LED驱动器，包括：电流源单元，其具有耦合到控制电压的控制端子，所述控制端子是全波整流线路输入电压的比率，耦合到电力线的第一通道端子 以及用于根据控制电压产生输出电流的第二通道端子; 以及与所述电流源单元串联的至少一个LED负载单元，其中所述至少一个LED负载单元中的每一个包括：包括LED模块和电容器的第一并联组合的第一负载，其中所述LED模块 具有至少一个发光二极管; 二极管，与第一负载处于第一串联组合; 以及与第二串联组合处于第二并联组合的开关。

公开(公告)号：US08314515B2

公开(公告)日：2012-11-20

申请号：US12496245

申请日：2009-07-01

Applicant: Yen-Hui Wang ,  Wei-Chun Hsiao

Inventor： Yen-Hui Wang ,  Wei-Chun Hsiao

IPC: G05F1/10

CPC classification number: G05F1/46 ,  Y10T307/826 ,  Y10T307/858

Abstract: A system corrected programmable integrated circuit is applied to a power supply and includes a comparator unit, a digital output unit and a programming unit. The comparator unit includes an external feedback voltage input end and a reference voltage input end for inputting a feedback voltage and a reference voltage respectively, such that when the feedback voltage equals the reference voltage, the comparator unit transmits a control signal to the digital output unit. When receiving the control signal, the digital output unit stops outputting the reference voltage and the current reference voltage is recorded as a programming voltage for outputting to the programming unit. When receiving the programming voltage, the programming unit programs the programming voltage and transmits the voltage to the reference voltage input end. Accordingly, the present invention automatically detects and compensates a system error to reduce external element, yet still achieving a qualified range of product specification.

Abstract translation: 将系统校正的可编程集成电路应用于电源，并且包括比较器单元，数字输出单元和编程单元。 比较器单元包括外部反馈电压输入端和用于分别输入反馈电压和参考电压的参考电压输入端，使得当反馈电压等于参考电压时，比较器单元向数字输出单元发送控制信号 。 当接收到控制信号时，数字输出单元停止输出参考电压，并且将当前参考电压记录为用于输出到编程单元的编程电压。 编程单元接收编程电压时，对编程电压进行编程，并将电压传输到参考电压输入端。 因此，本发明自动检测和补偿系统误差以减少外部元件，但仍然达到产品规格的合格范围。

公开(公告)号：US08068354B2

公开(公告)日：2011-11-29

申请号：US12336537

申请日：2008-12-17

Applicant: Yen-Hui Wang ,  Chi-Hao Wu ,  Chia-Chieh Hung ,  Chin-Yen Lin

Inventor： Yen-Hui Wang ,  Chi-Hao Wu ,  Chia-Chieh Hung ,  Chin-Yen Lin

IPC: H02M3/335

CPC classification number: H02M3/33507

Abstract: A current-level controlling device for a power supply includes a reception end for receiving a current sense signal, a reference voltage generator for generating a reference voltage, an adaptive reference voltage generator, coupled to the reference voltage generator and the reception end, for adjusting the reference voltage according to variation of peak values of the current sense signal, so as to generate an adaptive reference voltage, a comparator, coupled to the reception end and the adaptive reference voltage generator, for comparing the current sense signal and the adaptive reference voltage, to generate a comparison result, and a control unit, coupled to the comparator, for controlling a switch transistor of the power supply according to the comparison result.

Abstract translation: 用于电源的电流电平控制装置包括用于接收电流感测信号的接收端，用于产生参考电压的参考电压发生器，耦合到参考电压发生器和接收端的自适应参考电压发生器，用于调整 根据电流检测信号的峰值的变化产生参考电压，以产生耦合到接收端和自适应参考电压发生器的自适应参考电压，比较器，用于比较电流检测信号和自适应参考电压 ，以产生比较结果，以及耦合到比较器的控制单元，用于根据比较结果控制电源的开关晶体管。

公开(公告)号：US08064226B2

公开(公告)日：2011-11-22

申请号：US12433296

申请日：2009-04-30

Applicant: Yen-Hui Wang ,  Chia-Chieh Hung

Inventor： Yen-Hui Wang ,  Chia-Chieh Hung

IPC: H02M3/335

CPC classification number: H02M3/156 ,  H05B33/0818

Abstract: The present invention discloses a control circuit with frequency compensation, which can be applied to an open-loop control system. The control circuit includes an oscillator which is additionally connected to a first comparator including a first input end, a second input end and a first output end. The first input end provides for inputting a sampling current, the second input end provides for inputting a total voltage of a reference voltage and a DC-level voltage, and the first output end outputs a down-conversion signal. When the sampling current is larger than the total voltage, the first comparator will generate the down-conversion signal to the oscillator to reduce a frequency of the oscillator, such that a current of the open-loop control system can be controlled effectively to prevent an electronic element form being burned down.

Abstract translation: 本发明公开了一种具有频率补偿的控制电路，可应用于开环控制系统。 控制电路包括另外连接到包括第一输入端，第二输入端和第一输出端的第一比较器的振荡器。 第一输入端提供输入采样电流，第二输入端提供输入参考电压和DC电平电压的总电压，第一输出端输出降频转换信号。 当采样电流大于总电压时，第一比较器将产生到振荡器的降频转换信号以降低振荡器的频率，使得可以有效地控制开环控制系统的电流以防止 电子元素形式被烧毁。

公开(公告)号：US07983062B2

公开(公告)日：2011-07-19

申请号：US12406145

申请日：2009-03-18

Applicant: Yen-Hui Wang ,  Chia-Chien Hung ,  Chi-Hao Wu

Inventor： Yen-Hui Wang ,  Chia-Chien Hung ,  Chi-Hao Wu

IPC: H02H7/122

CPC classification number: H02M3/33507

Abstract: The present invention discloses a minimum on-time reduction method for a switching power conversion, comprising the steps of: generating a first reset signal and an over-supply pulse signal according to a current sensing signal and a reference signal; generating a blanking signal according to a count number of the over-supply pulse signal; and generating a second reset signal by performing Logic-AND operation on the first reset signal and the blanking signal. Furthermore, the present invention also provides a minimum on-time reduction apparatus for a power conversion, and a system using the minimum on-time reduction apparatus for a power conversion.

Abstract translation: 本发明公开了一种开关电源转换的最小导通时间简化方法，包括以下步骤：根据电流检测信号和参考信号产生第一复位信号和过供电脉冲信号; 根据过供电脉冲信号的计数数生成消隐信号; 以及通过对第一复位信号和消隐信号执行逻辑与运算来产生第二复位信号。 此外，本发明还提供了一种用于电力转换的最小接通时间减少装置，以及使用最小导通时间减少装置进行电力转换的系统。

公开(公告)号：US20110107275A1

公开(公告)日：2011-05-05

申请号：US12714556

申请日：2010-03-01

Applicant: Cheng-Hsing Kuo ,  Yen-Hui Wang ,  Tung-Jung Wu

Inventor： Cheng-Hsing Kuo ,  Yen-Hui Wang ,  Tung-Jung Wu

IPC: G06F3/048

CPC classification number: G06F3/038

Abstract: A method of testing a cursor interactive with a pointing device on a displaying device includes pointing at a position on a displaying device by the pointing device within a predetermined period, identifying whether a movement of the cursor makes any change corresponding to the pointing device, and concluding a testing result in accordance with the movement of the cursor.

Abstract translation: 一种测试与显示装置上的指示装置交互的光标的方法包括：在预定时段内由指示装置指向显示装置上的位置，识别光标的移动是否对应于指示装置的任何改变;以及 根据光标的移动结束测试结果。