公开(公告)号：US20120319770A1

公开(公告)日：2012-12-20

申请号：US13592368

申请日：2012-08-23

Applicant: Xie-Ren Hsu ,  Ji-Ting Chen ,  Yao-Hung Kuo

Inventor： Xie-Ren Hsu ,  Ji-Ting Chen ,  Yao-Hung Kuo

IPC: H03F1/34

CPC classification number: H03F1/56 ,  H03F1/34

Abstract: An output buffer circuit capable of enhancing stability includes an operational amplifier, a capacitive load and an output control unit. The operational amplifier has a positive input terminal, a negative input terminal and an output terminal, and generates an output voltage to the output terminal according to an input voltage received by the positive input terminal. The output control unit is coupled between the output terminal of the operational amplifier and the capacitive load, and is utilized for controlling electrical connection between the output terminal of the operational amplifier and the capacitive load to form a signal output path and for adjusting impedance of the signal output path when the signal output path is formed. The output control unit comprises a plurality of output switches for individually turning on or off the electrical connection between the output terminal and the capacitive load of the operational amplifier.

Abstract translation: 能够提高稳定性的输出缓冲电路包括运算放大器，电容性负载和输出控制单元。 运算放大器具有正输入端子，负输入端子和输出端子，并且根据正输入端子接收的输入电压向输出端子产生输出电压。 输出控制单元耦合在运算放大器的输出端和电容性负载之间，用于控制运算放大器的输出端与电容性负载之间的电连接，形成信号输出路径，并用于调节 信号输出路径形成时的信号输出路径。 输出控制单元包括多个输出开关，用于单独地接通或关断运算放大器的输出端子和电容负载之间的电连接。

公开(公告)号：US20120169368A1

公开(公告)日：2012-07-05

申请号：US13191488

申请日：2011-07-27

Applicant: Ji-Ting Chen ,  Shun-Hsun Yang ,  Kuang-Feng Sung

Inventor： Ji-Ting Chen ,  Shun-Hsun Yang ,  Kuang-Feng Sung

IPC: G01R31/40

CPC classification number: G09G3/006

Abstract: A test circuit of a source driver is disclosed. The test circuit includes a voltage selector and at least one digital-to-analog converter (DAC). The voltage selector has a plurality of first output terminals. The voltage selector outputs a first voltage at one of the first output terminals in a sequential order according to a selection signal and outputs a second voltage at the other first output terminals. Each of the at least one DACs has a plurality of the input terminals respectively coupled to the first output terminals and also has a second output terminal. The DAC transmits the first voltage received by one of the input terminals to the second output terminal in a sequential order according to the selection signal.

Abstract translation: 公开了一种源驱动器的测试电路。 测试电路包括电压选择器和至少一个数模转换器（DAC）。 电压选择器具有多个第一输出端子。 电压选择器根据选择信号按顺序输出第一输出端子之一的第一电压，并在其它第一输出端子处输出第二电压。 至少一个DAC中的每一个具有分别耦合到第一输出端子并且还具有第二输出端子的多个输入端子。 DAC根据选择信号按顺序将由一个输入端子接收的第一电压发送到第二输出端子。

公开(公告)号：US20090278604A1

公开(公告)日：2009-11-12

申请号：US12268403

申请日：2008-11-10

Applicant: Ji-Ting Chen

Inventor： Ji-Ting Chen

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45504 ,  H03F2203/45632 ,  H03F2203/45674

Abstract: An operational amplifier capable of enhancing slew rate is disclosed. The operational amplifier includes a first current generator for generating a first bias current, a second current generator for generating a second bias current, an amplification stage, coupled to the first current generator, for generating a amplification signal according to an input signal, an output stage, coupled to the second current generator and the amplification stage, for generating an output signal according to the amplification signal, and a bias current allocation unit, coupled to the first current generator, the second current generator, the amplification stage and the output stage, for reallocating current intensities of the first bias current and the second bias current according to a control signal.

Abstract translation: 公开了一种能够提高转换速率的运算放大器。 运算放大器包括用于产生第一偏置电流的第一电流发生器，用于产生第二偏置电流的第二电流发生器，耦合到第一电流发生器的放大级，用于根据输入信号产生放大信号，输出 耦合到第二电流发生器和放大级，用于根据放大信号产生输出信号;以及偏置电流分配单元，耦合到第一电流发生器，第二电流发生器，放大级和输出级 ，用于根据控制信号重新分配第一偏置电流和第二偏置电流的电流强度。

公开(公告)号：US08487687B2

公开(公告)日：2013-07-16

申请号：US12750671

申请日：2010-03-30

Applicant: Xie-Ren Hsu ,  Ji-Ting Chen

Inventor： Xie-Ren Hsu ,  Ji-Ting Chen

IPC: H03K5/08 ,  H03F3/45

CPC classification number: H03K19/018514 ,  G09G3/20 ,  G09G2310/0275 ,  G09G2310/0291 ,  H03F2200/441 ,  H03F2203/45136 ,  H03K5/08 ,  H03K5/2481 ,  H03K19/00361

Abstract: An output buffer circuit for avoiding voltage overshoot includes an input stage, an output bias circuit, an output stage, a clamp circuit, and a control unit. The input stage includes a positive input terminal, for receiving an input voltage, and a negative input terminal. The input stage generates a current signal according to the input voltage. The output bias circuit is coupled to the input stage, for generating a dynamic bias according to the current signal. The output stage is coupled to the input stage and the output bias circuit, including an output terminal, reversely coupled to the positive input terminal, and at least one output transistor, coupled to the output bias circuit and the output terminal, for providing a driving current to the output terminal according to the dynamic bias to generate an output voltage.

Abstract translation: 用于避免电压过冲的输出缓冲电路包括输入级，输出偏置电路，输出级，钳位电路和控制单元。 输入级包括用于接收输入电压的正输入端子和负输入端子。 输入级根据输入电压产生电流信号。 输出偏置电路耦合到输入级，用于根据电流信号产生动态偏置。 输出级耦合到输入级和输出偏置电路，包括反向耦合到正输入端的输出端和耦合到输出偏置电路和输出端的至少一个输出晶体管，用于提供驱动 根据动态偏置电流到输出端产生输出电压。

公开(公告)号：US20100188374A1

公开(公告)日：2010-07-29

申请号：US12538173

申请日：2009-08-10

Applicant: Ji-Ting Chen ,  Kuang-Feng Sung

Inventor： Ji-Ting Chen ,  Kuang-Feng Sung

IPC: G09G5/00

CPC classification number: G09G3/3614 ,  G09G3/3688 ,  G09G2330/021

Abstract: A driving method for a Liquid Crystal Display (LCD) device is used for reducing power consumption of the LCD device. The driving method includes determining a driving approach of the LCD device, and performing corresponding charge sharing on a plurality of data channels according to the driving approach. The driving approach of the LCD device is determined according to a latch data (LD) signal and a polarity signal.

Abstract translation: 液晶显示器（LCD）装置的驱动方法用于降低LCD装置的功耗。 所述驱动方法包括：根据所述驱动方法确定所述LCD装置的驱动方法，以及对多个数据信道执行相应的电荷共享。 根据锁存数据（LD）信号和极性信号来确定LCD装置的驱动方式。

公开(公告)号：US07755427B2

公开(公告)日：2010-07-13

申请号：US12268403

申请日：2008-11-10

Applicant: Ji-Ting Chen

Inventor： Ji-Ting Chen

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45504 ,  H03F2203/45632 ,  H03F2203/45674

Abstract: An operational amplifier capable of enhancing slew rate is disclosed. The operational amplifier includes a first current generator for generating a first bias current, a second current generator for generating a second bias current, an amplification stage, coupled to the first current generator, for generating a amplification signal according to an input signal, an output stage, coupled to the second current generator and the amplification stage, for generating an output signal according to the amplification signal, and a bias current allocation unit, coupled to the first current generator, the second current generator, the amplification stage and the output stage, for reallocating current intensities of the first bias current and the second bias current according to a control signal.

Abstract translation: 公开了一种能够提高转换速率的运算放大器。 运算放大器包括用于产生第一偏置电流的第一电流发生器，用于产生第二偏置电流的第二电流发生器，耦合到第一电流发生器的放大级，用于根据输入信号产生放大信号，输出 耦合到第二电流发生器和放大级，用于根据放大信号产生输出信号;以及偏置电流分配单元，耦合到第一电流发生器，第二电流发生器，放大级和输出级 ，用于根据控制信号重新分配第一偏置电流和第二偏置电流的电流强度。

公开(公告)号：US08928571B2

公开(公告)日：2015-01-06

申请号：US12538173

申请日：2009-08-10

Applicant: Ji-Ting Chen ,  Kuang-Feng Sung

Inventor： Ji-Ting Chen ,  Kuang-Feng Sung

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3688 ,  G09G2330/021

Abstract: A driving method for a Liquid Crystal Display (LCD) device is used for reducing power consumption of the LCD device. The driving method includes determining a driving approach of the LCD device, and performing corresponding charge sharing on a plurality of data channels according to the driving approach. The driving approach of the LCD device is determined according to a latch data (LD) signal and a polarity signal.

Abstract translation: 液晶显示器（LCD）装置的驱动方法用于降低LCD装置的功耗。 所述驱动方法包括：根据所述驱动方法确定所述LCD装置的驱动方法，以及对多个数据信道执行相应的电荷共享。 根据锁存数据（LD）信号和极性信号来确定LCD装置的驱动方式。

公开(公告)号：US08451060B2

公开(公告)日：2013-05-28

申请号：US13222263

申请日：2011-08-31

Applicant: Ji-Ting Chen ,  Roger Randolph Wang

Inventor： Ji-Ting Chen ,  Roger Randolph Wang

IPC: H03F1/14

CPC classification number: H03F3/3022 ,  H03F1/086 ,  H03F1/26 ,  H03F3/45219 ,  H03F2200/153 ,  H03F2200/444 ,  H03F2203/45654

Abstract: An amplifier device including a gain stage, an output stage, at least one phase compensation circuit and at least one coupling suppression device is provided. The gain stage has at least one feedback node. The output stage is coupled to the gain stage and has an output node for outputting an output voltage. Each of the at least one phase compensation circuit is coupled between a corresponding one of the at least one feedback node and the output node. Each of the at least one coupling suppression device is coupled between a corresponding one of the at least one feedback node and a respective coupling node, and is spontaneously turned on in response to a change of a voltage level at the corresponding feedback node when the corresponding feedback node is coupled by noise, thereby suppressing the change of the voltage level at the corresponding feedback node.

Abstract translation: 提供了包括增益级，输出级，至少一个相位补偿电路和至少一个耦合抑制装置的放大器装置。 增益级具有至少一个反馈节点。 输出级耦合到增益级，并且具有用于输出输出电压的输出节点。 所述至少一个相位补偿电路中的每一个耦合在所述至少一个反馈节点中的对应的一个反馈节点和所述输出节点之间。 所述至少一个耦合抑制装置中的每一个耦合在所述至少一个反馈节点中的对应的一个反馈节点和相应的耦合节点之间，并且响应于相应反馈节点处的电压电平的变化而自发地导通， 反馈节点通过噪声耦合，由此抑制相应反馈节点处的电压电平的变化。

公开(公告)号：US20120206424A1

公开(公告)日：2012-08-16

申请号：US13369358

申请日：2012-02-09

Applicant: Ji-Ting Chen ,  Kuang-Feng Sung

Inventor： Ji-Ting Chen ,  Kuang-Feng Sung

IPC: G09G5/00

CPC classification number: G09G3/006 ,  G09G2310/027 ,  G09G2320/0276

Abstract: A display driving circuit includes: a circuit under test; a first circuit, selectively coupled to the circuit under test and selectively coupled to an output, the first circuit having a stabilization period longer than that of the circuit under test; and a test auxiliary circuit, coupled to the circuit under test. In normal operation, after a normal signal flows into the circuit under test, the normal signal flows into the first circuit but not into the test auxiliary circuit. In test, after a test signal flows into the circuit under test, the test signal flows into the test auxiliary circuit but not into the first circuit.

Abstract translation: 显示驱动电路包括：被测电路; 第一电路，选择性地耦合到被测电路并选择性地耦合到输出，第一电路具有比被测电路的稳定周期长的稳定周期; 以及耦合到被测电路的测试辅助电路。 在正常操作中，在正常信号流入被测电路之后，正常信号流入第一电路，但不流入测试辅助电路。 在测试中，在测试信号流入被测电路之后，测试信号流入测试辅助电路，但不进入第一个电路。

公开(公告)号：US20110187457A1

公开(公告)日：2011-08-04

申请号：US13014672

申请日：2011-01-26

Applicant: Xie-Ren Hsu ,  Ji-Ting Chen ,  Yao-Hung Kuo

Inventor： Xie-Ren Hsu ,  Ji-Ting Chen ,  Yao-Hung Kuo

IPC: H03F1/56

CPC classification number: H03F1/56 ,  H03F1/34

Abstract: An output buffer circuit capable of enhancing stability includes an operational amplifier, a capacitive load and an output control unit. The operational amplifier has a positive input terminal, a negative input terminal and an output terminal, and generates an output voltage to the output terminal according to an input voltage received by the positive input terminal. The output control unit is coupled between the output terminal of the operational amplifier and the capacitive load, and is utilized for controlling electrical connection between the output terminal of the operational amplifier and the capacitive load to forma signal output path and for adjusting impedance of the signal output path when the signal output path is formed.

Abstract translation: 能够提高稳定性的输出缓冲电路包括运算放大器，电容性负载和输出控制单元。 运算放大器具有正输入端子，负输入端子和输出端子，并且根据正输入端子接收的输入电压向输出端子产生输出电压。 输出控制单元耦合在运算放大器的输出端和容性负载之间，用于控制运算放大器的输出端与电容性负载之间的电连接，以形成信号输出路径，并用于调整信号的阻抗 当形成信号输出路径时的输出路径。