公开(公告)号：US09196209B2

公开(公告)日：2015-11-24

申请号：US13345748

申请日：2012-01-08

Applicant: Chih-Jen Yen

Inventor： Chih-Jen Yen

IPC: G09G3/36

CPC classification number: G09G3/3685 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2310/0291 ,  G09G2330/023

Abstract: A charge recycling circuit is configured to recycle charges which are discharged by a driving circuit during a discharge period and provide the recycled charges for charging the driving circuit during a charge period. Power consumption in the driving circuit may thus be reduced.

Abstract translation: 电荷回收电路被配置为再循环在放电期间由驱动电路放电的电荷，并且在充电期间提供用于对驱动电路充电的再循环电荷。 因此驱动电路中的功耗可能会降低。

公开(公告)号：US20120105037A1

公开(公告)日：2012-05-03

申请号：US13342210

申请日：2012-01-03

Applicant: Chih-Jen Yen ,  Tsung-Yin Yu

Inventor： Chih-Jen Yen ,  Tsung-Yin Yu

IPC: G05F1/10

CPC classification number: H02M3/073 ,  G11C5/145

Abstract: A voltage conversion device capable of enhancing conversion efficiency includes a charge pump for generating output voltage linear to input voltage according to the input voltage, a feedback unit for generating a feedback signal according to the output voltage generated by the charge pump, and a regulating unit for outputting and adjusting the input voltage according to the feedback signal provided by the feedback unit, so as to keep the output voltage unchanged.

Abstract translation: 能够提高转换效率的电压转换装置包括用于根据输入电压产生与输入电压成线性的输出电压的电荷泵，用于根据由电荷泵产生的输出电压产生反馈信号的反馈单元和调节单元 用于根据反馈单元提供的反馈信号输出和调节输入电压，以保持输出电压不变。

公开(公告)号：US20100156309A1

公开(公告)日：2010-06-24

申请号：US12478735

申请日：2009-06-04

Applicant: Yi-Te Liu ,  Chih-Yuan Hsieh ,  Chih-Jen Yen

Inventor： Yi-Te Liu ,  Chih-Yuan Hsieh ,  Chih-Jen Yen

IPC: H05B37/02 ,  H05B39/09

CPC classification number: H05B33/0893 ,  H05B33/0854

Abstract: An LED illuminant driving circuit and an automatic brightness compensation method thereof are provided herein. The automatic brightness compensation method includes: providing a target value; detecting an operation period of a pulse of an output of the LED illuminant driving circuit, the pulse is adapted to an LED illuminant for making the light emitting; deciding a peak value according to the target value and the operation period; and setting a peak level of the pulse according to the peak value. The LED illuminant driving circuit and the automatic brightness compensation method thereof provides a stable average current/voltage to the LED illuminant and avoids brightness variations of the light emitting.

Abstract translation: 本发明提供一种LED光源驱动电路及其自动亮度补偿方法。 自动亮度补偿方法包括：提供目标值; 检测LED光源驱动电路的输出脉冲的工作周期，该脉冲适用于用于发光的LED光源; 根据目标值和操作周期决定峰值; 并根据峰值设定脉冲的峰值电平。 LED光源驱动电路及其自动亮度补偿方法为LED光源提供稳定的平均电流/电压，并避免发光的亮度变化。

公开(公告)号：US07605663B2

公开(公告)日：2009-10-20

申请号：US11163122

申请日：2005-10-05

Applicant: Chiu-Hung Cheng ,  Chih-Jen Yen

Inventor： Chiu-Hung Cheng ,  Chih-Jen Yen

IPC: H03L7/08

CPC classification number: H03L7/0891 ,  H03L7/14 ,  H03L7/18

Abstract: A method and an apparatus for stabilizing output from a Phase Lock Loop (PLL) and the PLL thereof is disclosed. The method mainly relates to enabling the control voltage of a voltage control oscillator VCO in the PLL remained unchanged by means of turning off a charge-discharge current source of a charge pump in a PLL in response to a detected reference signal lower than a default value. Furthermore, the method enables the pulse frequency output from the VCO no exceeding a default tolerant frequency range in a distance from a desired output frequency. Thus, when the reference signal resumes the original frequency, the PLL can quickly lock the phase and the frequency again.

Abstract translation: 公开了一种用于稳定锁相环（PLL）的输出及其PLL的方法和装置。 该方法主要涉及通过响应于低于默认值的检测到的参考信号，通过关闭PLL中的电荷泵的充电 - 放电电流源来使PLL中的压控振荡器VCO的控制电压保持不变 。 此外，该方法使得来自VCO的脉冲频率输出不会超过与期望的输出频率相距一定距离的默认容限频率范围。 因此，当参考信号恢复原始频率时，PLL可以再次快速锁定相位和频率。

公开(公告)号：US20090174466A1

公开(公告)日：2009-07-09

申请号：US12204791

申请日：2008-09-04

Applicant: Chih-Yuan Hsieh ,  Chih-Jen Yen

Inventor： Chih-Yuan Hsieh ,  Chih-Jen Yen

IPC: H02M3/02

CPC classification number: H02M3/07 ,  H02M2001/009

Abstract: A charge pump circuit is provided. The charge pump circuit includes a pump unit, first through sixth switches, a fly capacitor and an output capacitor. In a first period, an input voltage and a first voltage charge at least one internal capacitor of the pump unit via a first terminal and a second terminal of the pump unit. In the second period, the internal capacitor of the pump unit provides charges to the fly capacitor via the second switch and generates a first output voltage. In the third period, the fly capacitor supplies the charges to the output capacitor via the fourth switch to generate a second output voltage.

Abstract translation: 提供电荷泵电路。 电荷泵电路包括泵单元，第一至第六开关，飞电容器和输出电容器。 在第一时段中，输入电压和第一电压经由泵单元的第一端子和第二端子对泵单元的至少一个内部电容器充电。 在第二时段中，泵单元的内部电容器经由第二开关向飞电电容器提供电荷并产生第一输出电压。 在第三时期，飞电容器通过第四开关将电荷提供给输出电容器，以产生第二输出电压。

公开(公告)号：US07508184B2

公开(公告)日：2009-03-24

申请号：US11465459

申请日：2006-08-18

Applicant: Chih-Jen Yen ,  Chih-Yuan Hsieh

Inventor： Chih-Jen Yen ,  Chih-Yuan Hsieh

IPC: G05F3/16 ,  G05F3/28

CPC classification number: G05F3/262

Abstract: A current source apparatus for reducing interference with noise is provided. The current source apparatus includes a controllable current source and a feedback controller. The controllable current source provides an output current according to a control signal and produces a feedback signal according to the output of the controllable current source. The feedback controller is coupled to the controllable current source for receiving the feedback signal, and the feedback controller adjusts the control signal based on the feedback signal and outputs the control signal for controlling the controllable current source to output a stable output current.

Abstract translation: 提供了用于减少噪声干扰的电流源装置。 电流源装置包括可控电流源和反馈控制器。 可控电流源根据控制信号提供输出电流，并根据可控电流源的输出产生反馈信号。 反馈控制器耦合到可控电流源，用于接收反馈信号，反馈控制器根据反馈信号调节控制信号，并输出控制信号以控制可控电流源输出稳定的输出电流。

公开(公告)号：US07403046B2

公开(公告)日：2008-07-22

申请号：US11161433

申请日：2005-08-03

Applicant: Chih-Jen Yen ,  Chih-Hsin Hsu

Inventor： Chih-Jen Yen ,  Chih-Hsin Hsu

IPC: G11C27/02 ,  H03K5/00 ,  H03K17/00

CPC classification number: G11C27/026 ,  G11C27/02

Abstract: A sample-and-hold circuit including a first switch, a first capacitor and an amplifier is provided. The switch has a first terminal to receive the input signal and transmit it to a second terminal thereof in the sample period. The first terminal of the first capacitor couples to the second terminal of the first switch, and the second terminal of the first capacitor couples to a first voltage for storing the sampling result of the input signal. The amplifier couples to the second terminal of the first switch, wherein the amplifier is disabled in the sample period, and the amplifier is enabled to generate the output signal according to the sampling result in the hold period.

Abstract translation: 提供了包括第一开关，第一电容器和放大器的采样保持电路。 开关具有接收输入信号的第一端子并且在采样周期中将其发送到其第二端子。 第一电容器的第一端子耦合到第一开关的第二端子，并且第一电容器的第二端子耦合到用于存储输入信号的采样结果的第一电压。 放大器耦合到第一开关的第二端子，其中放大器在采样周期中禁用，并且放大器能够根据保持周期中的采样结果产生输出信号。

公开(公告)号：US07388532B2

公开(公告)日：2008-06-17

申请号：US11556173

申请日：2006-11-03

Applicant: Chih-Jen Yen

Inventor： Chih-Jen Yen

IPC: H03M1/66

CPC classification number: H03M1/667 ,  H03M1/765

Abstract: An overdrive digital-to-analog converter (DAC), a source driver, and a method thereof are provided. The DAC comprises a voltage divider unit, a selection unit, a buffer unit, and a detection unit. The voltage divider unit provides a plurality of reference voltages. The detection unit outputs a regulation signal according to a comparison result between a specific reference signal corresponding to an input digital signal and an output voltage output from the buffer unit. The selection unit regulates an overdrive voltage input to the buffer unit according to the regulation signal and the input digital signal. Accordingly, the output voltage of the buffer unit is changed quickly, and the conversion speed of the DAC is improved.

Abstract translation: 提供了一种过驱动数模转换器（DAC），源驱动器及其方法。 DAC包括分压器单元，选择单元，缓冲单元和检测单元。 分压器单元提供多个参考电压。 检测单元根据对应于输入数字信号的特定参考信号与从缓冲单元输出的输出电压之间的比较结果输出调节信号。 选择单元根据调节信号和输入数字信号调节输入到缓冲器单元的过驱动电压。 因此，缓冲单元的输出电压快速变化，并且DAC的转换速度提高。

公开(公告)号：US20070229440A1

公开(公告)日：2007-10-04

申请号：US11425378

申请日：2006-06-20

Applicant: Chih-Jen Yen

Inventor： Chih-Jen Yen

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3696 ,  G09G2310/027

Abstract: A source driver for driving an M-bit liquid crystal display panel includes a reference voltage generator, 2M-X voltage buffers and a voltage-dividing circuit. The 2M-X voltage buffers are coupled to the reference voltage generator for enhancing the driving abilities of 2M-X reference voltages generated by the reference voltage generator, thereby generating corresponding 2M-X output voltages. The voltage-dividing circuit is coupled to the 2M-X voltage buffers for voltage-dividing the 2M-X output voltages generated by the 2M-X voltage buffers, thereby generating 2M reference voltages required for driving the M-bit liquid crystal display panel.

Abstract translation: 用于驱动M位液晶显示面板的源极驱动器包括参考电压发生器，2-M-X电压缓冲器和分压电路。 两个MX 电压缓冲器耦合到参考电压发生器，以增强由参考电压发生器产生的2个MX参考电压的驱动能力，从而产生相应的2 < MX 输出电压。 分压电路耦合到2×MX电压缓冲器，用于对由2×MX电压缓冲器产生的2×MX输出电压进行分压 从而产生用于驱动M位液晶显示面板所需的2个M参考电压。

公开(公告)号：US20060202722A1

公开(公告)日：2006-09-14

申请号：US11161433

申请日：2005-08-03

Applicant: Chih-Jen Yen ,  Chih-Hsin Hsu

Inventor： Chih-Jen Yen ,  Chih-Hsin Hsu

IPC: G11C27/02

CPC classification number: G11C27/026 ,  G11C27/02

Abstract: A sample-and-hold circuit including a first switch, a first capacitor and an amplifier is provided. The switch has a first terminal to receive the input signal and transmit it to a second terminal thereof in the sample period. The first terminal of the first capacitor couples to the second terminal of the first switch, and the second terminal of the first capacitor couples to a first voltage for storing the sampling result of the input signal. The amplifier couples to the second terminal of the first switch, wherein the amplifier is disabled in the sample period, and the amplifier is enabled to generate the output signal according to the sampling result in the hold period.

Abstract translation: 提供了包括第一开关，第一电容器和放大器的采样保持电路。 开关具有接收输入信号的第一端子并且在采样周期中将其发送到其第二端子。 第一电容器的第一端子耦合到第一开关的第二端子，并且第一电容器的第二端子耦合到用于存储输入信号的采样结果的第一电压。 放大器耦合到第一开关的第二端子，其中放大器在采样周期中禁用，并且放大器能够根据保持周期中的采样结果产生输出信号。