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公开(公告)号：US07684482B2
公开(公告)日：2010-03-23
申请号：US11698765
申请日：2007-01-26
Applicant: Vincent Lok-Cheung Fong
Inventor： Vincent Lok-Cheung Fong
CPC classification number: G06F13/4265 , G06F13/4282
Abstract: Embodiments of the present invention include systems and methods of control using a single wire. The systems and methods presented allow sending or receiving commands and data through a single wire. In one embodiment, commands and data are received by the control system through a single terminal. In another embodiment, commands and data are received and transmitted from the control system through a single terminal.
Abstract translation: 本发明的实施例包括使用单线的控制系统和方法。 所提出的系统和方法允许通过单根线发送或接收命令和数据。 在一个实施例中，命令和数据由控制系统通过单个终端接收。 在另一个实施例中，命令和数据通过单个终端从控制系统接收和发送。
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公开(公告)号：US08111846B2
公开(公告)日：2012-02-07
申请号：US11890813
申请日：2007-08-07
Applicant: Hideto Takagishi , Wolf Zhang , Alan Wu
Inventor： Hideto Takagishi , Wolf Zhang , Alan Wu
IPC: H02B1/00
CPC classification number: H03F3/2173 , H03F2200/03 , H03F2200/351
Abstract: Embodiments of the present invention include switching amplifier circuits and methods. In one embodiment, the present invention includes a low distortion method of driving a switching amplifier comprising modulating an audio input signal to produce a half-wave rectified pulse-width modulated signal and a complementary half-wave rectified pulse-width modulated signal. These signals may be amplified in a power amplifier and combined in a feedback circuit to generate a first feedback signal and a second feedback signal, which may be coupled the inputs of a modulator for controlling the output signal.
Abstract translation: 本发明的实施例包括开关放大器电路和方法。 在一个实施例中，本发明包括驱动开关放大器的低失真方法，包括调制音频输入信号以产生半波整流脉宽调制信号和互补半波整流脉宽调制信号。 这些信号可以在功率放大器中被放大并组合在反馈电路中以产生第一反馈信号和第二反馈信号，其可耦合调制器的输入以控制输出信号。
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公开(公告)号：US20100232628A1
公开(公告)日：2010-09-16
申请号：US12401905
申请日：2009-03-11
Applicant: Hongbo Zhang , Vincent Fong , Jing Xu , Yuling Khang
Inventor： Hongbo Zhang , Vincent Fong , Jing Xu , Yuling Khang
IPC: H03F99/00
Abstract: In one embodiment the present invention includes a method for starting up a class D amplifier. The method comprises increasing, gating, and driving. The increasing includes increasing a duty cycle of a pulse train from a first duty cycle to a second duty cycle. The gating includes gating a signal based on the increasing of the duty cycle. The gating results in a gated signal. The driving includes driving an output signal from the gated signal to charge an output capacitor. The output capacitor is coupled to a speaker. The increasing of the duty cycle contributes to the charging of the output capacitor such that switching sounds detectable by the human ear are reduced.
Abstract translation: 在一个实施例中，本发明包括用于启动D类放大器的方法。 该方法包括增加，门控和驾驶。 增加包括将脉冲串从第一占空比增加到第二占空比的占空比。 门控包括基于占空比的增加来门控信号。 门控产生门控信号。 驱动包括驱动来自门控信号的输出信号以对输出电容器充电。 输出电容耦合到扬声器。 占空比的增加有助于输出电容器的充电，使得由人耳可检测的开关声音减小。
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公开(公告)号：US20080272651A1
公开(公告)日：2008-11-06
申请号：US11799173
申请日：2007-05-01
Applicant: Vincent Lok-Cheung Fong
Inventor： Vincent Lok-Cheung Fong
IPC: H02J3/10
CPC classification number: H02J1/08 , H02J2001/008 , H05B33/0812 , H05B33/0827 , Y02B20/345 , Y10T307/406
Abstract: Embodiments of the present invention include circuits and methods for electrical current control. In one embodiment, a regulator provides power to the anode end of a set of LED strings. A current setting circuit derives its current from a current reference and generates multiple matching currents that drive the low side (cathode end) of the set of LED strings. The current setting circuit also contains a feedback signal to the regulator that helps maintain a desired voltage level to the anode end of the LED strings. This embodiment is designed to be expandable and drive any number of LED strings. The present invention may be implemented with a high or low side driver scheme to drive the current. Also, the present invention may be implemented with bipolar, nmos, pmos, or any device that operates as a transistor.
Abstract translation: 本发明的实施例包括用于电流控制的电路和方法。 在一个实施例中，调节器向一组LED串的阳极端提供电力。 电流设置电路从电流基准中导出电流，并产生驱动LED串的低端（阴极端）的多个匹配电流。 电流设置电路还包含一个到调节器的反馈信号，有助于维持LED串的阳极端所需的电压电平。 该实施例被设计为可扩展并且驱动任何数量的LED串。 本发明可以用高或低侧驱动器方案实现来驱动电流。 此外，本发明可以用双极，nmos，pmos或作为晶体管工作的任何器件来实现。
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5.发明授权公开(公告)号：US07915871B2
公开(公告)日：2011-03-29
申请号：US12020262
申请日：2008-01-25
Applicant: Jin Wang , Vincent L. Fong
Inventor： Jin Wang , Vincent L. Fong
CPC classification number: H02M3/156 , H02M2001/0009
Abstract: In one embodiment the present invention includes a DC to DC converter device which includes an electronic circuit. The electronic circuit comprises a first comparator, a second comparator, a first switch, a first latch, and a current sensor. The inductor current includes a peak current value and a valley current value. The first comparator detects the peak current value and resets the first latch which opens the first switch. The second comparator detects the valley current value and sets the first latch which closes the first switch. The current sensor is coupled to sense an inductor current flowing through an output load, and is coupled to provide a sense voltage to the first and second comparators. In this manner, the electronic circuit provides DC to DC conversion with current control.
Abstract translation: 在一个实施例中，本发明包括包括电子电路的DC-DC转换器装置。 电子电路包括第一比较器，第二比较器，第一开关，第一锁存器和电流传感器。 电感电流包括峰值电流值和谷值电流值。 第一个比较器检测峰值电流值，并复位打开第一个开关的第一个锁存器。 第二比较器检测谷值电流值并设置关闭第一开关的第一锁存器。 电流传感器被耦合以感测流过输出负载的电感器电流，并被耦合以向第一和第二比较器提供感测电压。 以这种方式，电子电路通过电流控制提供DC到DC转换。
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Patent Agency Ranking
公开(公告)号：US07579910B2
公开(公告)日：2009-08-25
申请号：US11968379
申请日：2008-01-02
Applicant: Wolf Zhang , Hideto Takagishi , Alan Wu
Inventor： Wolf Zhang , Hideto Takagishi , Alan Wu
IPC: H03F3/217
CPC classification number: H03F3/2173 , H03F2200/03 , H03F2200/351
Abstract: Embodiments of the present invention include switching amplifier circuits and methods. In one embodiment, the present invention includes an low distortion method of driving a switching amplifier comprising generating a first pulse width modulated signal on a first terminal, generating a second pulse width modulated signal on a second terminal, and delaying one of the first or second signals. In one embodiment, the modulated signals and delay result in pulse trains near zero crossings to reduce crossover distortion.
Abstract translation: 本发明的实施例包括开关放大器电路和方法。 在一个实施例中，本发明包括驱动开关放大器的低失真方法，包括在第一端上产生第一脉宽调制信号，在第二端产生第二脉宽调制信号，并延迟第一或第二 信号。 在一个实施例中，调制信号和延迟导致在零交叉附近的脉冲串，以减少交叉失真。
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公开(公告)号：US07402962B1
公开(公告)日：2008-07-22
申请号：US11698766
申请日：2007-01-26
Applicant: Vincent Lok-Cheung Fong
Inventor： Vincent Lok-Cheung Fong
IPC: H05B37/02
Abstract: Embodiments of the present invention include systems and methods of driving an electroluminescent lamp. In one embodiment, the electroluminescent lamp is driven to a first threshold during a first time period and then driven to successive voltages between the threshold and a maximum voltage during successive time. This method of driving the lamp waveshapes the lamp voltage signal. In one example, the thresholds are set to minimize audible noise from the electroluminescent lamp due to the piezoelectric effect.
Abstract translation: 本发明的实施例包括驱动电致发光灯的系统和方法。 在一个实施例中，电致发光灯在第一时间段期间被驱动到第一阈值，然后在连续时间期间被驱动到阈值和最大电压之间的连续电压。 这种驱动灯波形的方法是灯电压信号。 在一个示例中，阈值被设置为由于压电效应而使来自电致发光灯的可听噪声最小化。
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公开(公告)号：US08265303B2
公开(公告)日：2012-09-11
申请号：US12401905
申请日：2009-03-11
Applicant: Hongbo Zhang , Vincent Fong , Jing Xu , Yuling Khang
Inventor： Hongbo Zhang , Vincent Fong , Jing Xu , Yuling Khang
IPC: H04B1/00
Abstract: In one embodiment the present invention includes a method for starting up a class D amplifier. The method comprises increasing, gating, and driving. The increasing includes increasing a duty cycle of a pulse train from a first duty cycle to a second duty cycle. The gating includes gating a signal based on the increasing of the duty cycle. The gating results in a gated signal. The driving includes driving an output signal from the gated signal to charge an output capacitor. The output capacitor is coupled to a speaker. The increasing of the duty cycle contributes to the charging of the output capacitor such that switching sounds detectable by the human ear are reduced.
Abstract translation: 在一个实施例中，本发明包括用于启动D类放大器的方法。 该方法包括增加，门控和驾驶。 增加包括将脉冲串从第一占空比增加到第二占空比的占空比。 门控包括基于占空比的增加来门控信号。 门控产生门控信号。 驱动包括驱动来自门控信号的输出信号以对输出电容器充电。 输出电容耦合到扬声器。 占空比的增加有助于输出电容器的充电，使得由人耳可检测的开关声音减小。
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公开(公告)号：US20080303493A1
公开(公告)日：2008-12-11
申请号：US12002250
申请日：2007-12-14
Applicant: Liqiang Hu , Weili Yang , Jing Wang
Inventor： Liqiang Hu , Weili Yang , Jing Wang
IPC: G05F1/00
CPC classification number: H02M1/36 , H02M3/1588 , Y02B70/1466
Abstract: Embodiments of the present invention include a method of starting a boost regulator comprising during an initial phase beginning when the boost regulator is powered off, coupling a first current from the input node to the output node to increase a voltage on the capacitor to a first voltage level, during a second phase following the first phase, switching the PMOS transistor and the NMOS transistor, during a third phase following the second phase, turning said PMOS off and switching said NMOS transistor, and during a fourth phase, synchronously switching the PMOS transistor and NMOS transistor.
Abstract translation: 本发明的实施例包括启动升压调节器的方法，其包括在升压调节器断电时的初始相位开始期间，将来自输入节点的第一电流耦合到输出节点，以将电容器上的电压增加到第一电压 电平，在第一阶段之后的第二阶段期间，在第二阶段之后的第三阶段期间切换PMOS晶体管和NMOS晶体管，关闭所述PMOS并切换所述NMOS晶体管，并且在第四阶段期间，同步地切换PMOS晶体管 和NMOS晶体管。
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公开(公告)号：US20080209250A1
公开(公告)日：2008-08-28
申请号：US11698765
申请日：2007-01-26
Applicant: Vincent Lok-Cheung Fong
Inventor： Vincent Lok-Cheung Fong
IPC: G06F1/16
CPC classification number: G06F13/4265 , G06F13/4282
Abstract: Embodiments of the present invention include systems and methods of control using a single wire. The systems and methods presented allow sending or receiving commands and data through a single wire. In one embodiment, commands and data are received by the control system through a single terminal. In another embodiment, commands and data are received and transmitted from the control system through a single terminal.
Abstract translation: 本发明的实施例包括使用单线的控制系统和方法。 所提出的系统和方法允许通过单根线发送或接收命令和数据。 在一个实施例中，命令和数据由控制系统通过单个终端接收。 在另一个实施例中，命令和数据通过单个终端从控制系统接收和发送。
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