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公开(公告)号：US07180886B2
公开(公告)日：2007-02-20
申请号：US10153784
申请日：2002-05-24
Applicant: Jing-Meng Liu , Kent Hwang , Chao-Hsuan Chuang , Cheng-Hsuan Fan
Inventor： Jing-Meng Liu , Kent Hwang , Chao-Hsuan Chuang , Cheng-Hsuan Fan
CPC classification number: H04L25/4923 , H04L7/06 , H04L25/4904
Abstract: In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal and the logic states of the data signal to increase the endurance of frequency displacement and resist influences of the interference of external conditions, low quality of transmission medium, and limitation of transmission distance and make the reliability and correctness of the signal transmission improve substantially. It is also clearly illustrated the feasibility and simplicity for implementing the one-wired synchronized communication by a plurality of exemplary signal types and a transceiver circuitry.
Abstract translation: 在单线总线上的同步数据通信中，它发送和接收同步信号，该同步信号通过使用用于同步信号的标识符的三个电可区分状态以及数据信号的逻辑状态来分割数据信号的一部分或全部比例 数据信号增加频率位移的耐久性，抵抗外部条件干扰，传输介质质量差，传输距离限制的影响，使信号传输的可靠性和正确性大大提高。 还清楚地示出了通过多个示例性信号类型和收发器电路来实现单线同步通信的可行性和简单性。
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公开(公告)号：US06969980B1
公开(公告)日：2005-11-29
申请号：US10850164
申请日：2004-05-21
Applicant: Liang-Pin Tai , Kent Hwang , Jian-Rong Huang , Kuo-Ping Liu , Cheng-Hsuan Fan , Ko-Cheng Wang , Yu-Fan Liao
Inventor： Liang-Pin Tai , Kent Hwang , Jian-Rong Huang , Kuo-Ping Liu , Cheng-Hsuan Fan , Ko-Cheng Wang , Yu-Fan Liao
CPC classification number: H02M1/08
Abstract: A pulse width modulator includes an amplifier module, a comparator module, and a filter module. The amplifier module receives a feedback voltage signal from a passive network, and generates first and second non-inverted voltage signals and first and second inverted voltage signals in response to the feedback voltage signal. The comparator module receives the first and second non-inverted voltage signals and the first and second inverted voltage signals, and provides first and second differential voltage signals corresponding to the first and second non-inverted voltage signals and the first and second inverted voltage signals. The filter module is coupled between the amplifier module and the comparator module, and is operable so as to attenuate high frequency components of the first and second non-inverted voltage signals. As such, the presence of noise in the feedback voltage signal does not affect differential operation of the comparator module.
Abstract translation: 脉冲宽度调制器包括放大器模块，比较器模块和滤波器模块。 放大器模块从无源网络接收反馈电压信号，并响应于反馈电压信号产生第一和第二非反相电压信号以及第一和第二反相电压信号。 比较器模块接收第一和第二非反相电压信号以及第一和第二反相电压信号，并提供对应于第一和第二非反相电压信号以及第一和第二反相电压信号的第一和第二差分电压信号。 滤波器模块耦合在放大器模块和比较器模块之间，并且可操作以便衰减第一和第二非反相电压信号的高频分量。 因此，反馈电压信号中的噪声的存在不会影响比较器模块的差分工作。
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公开(公告)号：US06809616B2
公开(公告)日：2004-10-26
申请号：US10342183
申请日：2003-01-15
Applicant: Jing-Meng Liu , Kent Hwang , Chao-Hsuan Chuang , Cheng-Hsuan Fan
Inventor： Jing-Meng Liu , Kent Hwang , Chao-Hsuan Chuang , Cheng-Hsuan Fan
IPC: H03H1100
CPC classification number: H03H11/485 , H03H11/48
Abstract: An inductor equivalent circuit is disclosed. The circuit comprises a reference current source, a first current mirror, a second current mirror, two operational amplifiers OP1 and OP2, a capacitor, a first transistor, a second transistor, a mirror resistor set, and a bypass current source in parallel with the capacitor. An input signal is through OP1 and second transistor to control the reference current source. The first mirror current is then feed-back a signal to the first transistor through an OP2. The current signal makes the drain current of the first transistor lags the input voltage signal by 90° due to the capacitor coupled with the first mirror current source. The mirror resistor set can be resistors having one common terminal grounded, and other terminals each, respectively, coupled with the first and the second transistor and the capacitor, or can be composed of transistors and all of them with gate property biased so that the transistors in the mirror resistor set are operated in an ohmic region. The second mirror current provides an output current of the inductor equivalent circuit for next cascade stage.
Abstract translation: 公开了一种电感器等效电路。 该电路包括参考电流源，第一电流镜，第二电流镜，两个运算放大器OP1和OP2，电容器，第一晶体管，第二晶体管，反射镜电阻器组以及旁路电流源 电容器。 输入信号通过OP1和第二晶体管来控制参考电流源。 然后通过OP2将第一镜电流反馈到第一晶体管。 由于与第一反射镜电流源耦合的电容器，电流信号使得第一晶体管的漏极电流滞留输入电压信号90°。 镜电阻器组可以是具有一个公共端子接地的电阻器，并且其他端子分别与第一和第二晶体管和电容器耦合，或者可以由晶体管组成，并且所有这些端子都具有偏置的栅极特性，使得晶体管 镜面电阻组在欧姆区域工作。 第二镜电流为下一级联级提供电感等效电路的输出电流。
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公开(公告)号：US07991172B2
公开(公告)日：2011-08-02
申请号：US11755894
申请日：2007-05-31
Applicant: Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Shui-Mu Lin , Chih-Ping Tan
Inventor： Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Shui-Mu Lin , Chih-Ping Tan
IPC: H03F99/00
CPC classification number: H03F3/45475 , H02M3/07 , H03F1/0211 , H03F3/187 , H03F2203/45136 , H03F2203/45166 , H04R2460/03
Abstract: The present invention discloses a half-voltage headphone driver circuit, comprising: at least one operational amplifier providing an output to a headphone speaker, and a charge pump receiving a supply voltage (VDD), generating a positive half-voltage and a negative half-voltage (VDD/2 and −VDD/2) based on the supply voltage, and supplying the positive half-voltage and negative half-voltage as high and low operation levels to the at least one operational amplifier.
Abstract translation: 本发明公开了一种半电压耳机驱动电路，包括：向头戴式扬声器提供输出的至少一个运算放大器和接收电源电压（VDD）的电荷泵，产生正半电压和负半波电压， 基于电源电压提供电压（VDD / 2和-VDD / 2），并将正半电压和负半电压作为高和低操作电平提供给至少一个运算放大器。
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公开(公告)号：US20080298605A1
公开(公告)日：2008-12-04
申请号：US11755894
申请日：2007-05-31
Applicant: Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Shui-Mu Lin , Chih-Ping Tan
Inventor： Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Shui-Mu Lin , Chih-Ping Tan
IPC: H04R1/10
CPC classification number: H03F3/45475 , H02M3/07 , H03F1/0211 , H03F3/187 , H03F2203/45136 , H03F2203/45166 , H04R2460/03
Abstract: The present invention discloses a half-voltage headphone driver circuit, comprising: at least one operational amplifier providing an output to a headphone speaker, and a charge pump receiving a supply voltage (VDD), generating a positive half-voltage and a negative half-voltage (VDD/2 and −VDD/2) based on the supply voltage, and supplying the positive half-voltage and negative half-voltage as high and low operation levels to the at least one operational amplifier.
Abstract translation: 本发明公开了一种半电压耳机驱动电路，包括：向头戴式扬声器提供输出的至少一个运算放大器和接收电源电压（VDD）的电荷泵，产生正半电压和负半波电压， 基于电源电压提供电压（VDD / 2和-VDD / 2），并将正半电压和负半电压作为高和低操作电平提供给至少一个运算放大器。
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Patent Agency Ranking
16.发明申请公开(公告)号：US20080298099A1
公开(公告)日：2008-12-04
申请号：US12155023
申请日：2008-05-29
Applicant: Pei-Lun Huang , Cheng-Hsuan Fan
Inventor： Pei-Lun Huang , Cheng-Hsuan Fan
IPC: H02H7/12
Abstract: An apparatus and method for reducing the die area of a PWM controller include a protection circuit triggered by a fault index signal for counting, and the counting time is provided for a delay time required by fault verification. Therefore, fault detection circuits can be eliminated and the purpose of reducing the die area can be achieved.
Abstract translation: 用于减小PWM控制器的管芯面积的装置和方法包括由用于计数的故障索引信号触发的保护电路，并且为故障验证所需的延迟时间提供计数时间。 因此，可以消除故障检测电路，并且可以实现减小管芯面积的目的。
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公开(公告)号：US20070188154A1
公开(公告)日：2007-08-16
申请号：US11705090
申请日：2007-02-12
Applicant: Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Chih-Ping Tan
Inventor： Cheng-Hsuan Fan , Chao-Hsuan Chuang , Hung-Che Chou , Ching-Hsiang Yang , Chih-Ping Tan
IPC: G05F1/00
CPC classification number: G05F1/565
Abstract: A linear voltage regulator comprises a transistor for converting a supply voltage to an output voltage. By directly monitoring the supply voltage and thereby rapidly responding when the supply voltage suffers a ripple, the linear voltage regulator enhances the stability of the output voltage.
Abstract translation: 线性稳压器包括用于将电源电压转换为输出电压的晶体管。 通过直接监控电源电压，从而在电源电压受到纹波时快速响应，线性稳压器可提高输出电压的稳定性。
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18.发明授权Programmable voltage supervisory circuit and method with minimum programming pins and low quiescent current 失效可编程电压监控电路和方法，具有最小编程引脚和低静态电流公开(公告)号：US06844709B2
公开(公告)日：2005-01-18
申请号：US10283062
申请日：2002-10-30
Applicant: Chao-Hsuan Chuang , Jing-Meng Liu , Cheng-Hsuan Fan , Kent Hwang
Inventor： Chao-Hsuan Chuang , Jing-Meng Liu , Cheng-Hsuan Fan , Kent Hwang
CPC classification number: G05F1/565
Abstract: A programmable voltage supervisory circuit and method with minimum programming pins and low quiescent current is provided to monitor a supply voltage, by which only one programming pin can configure three voltage levels for the threshold voltage to be compared to the supply voltage. The programming pin is connected with a voltage select signal that is defined to be high, low or floating states each determines a setting voltage among three levels corresponding to the three threshold voltages, respectively, by a voltage select circuit. A sample/hold circuit in combination with a switch arrangement is further connected to the voltage select circuit such that the programmable voltage supervisory circuit is only operationable during the duty of a clock and thereby to reduce the power consumption thereof by squeezing the duty.
Abstract translation: 提供了具有最小编程引脚和低静态电流的可编程电压监控电路和方法来监视电源电压，只有一个编程引脚可以配置三个电压电平，以将阈值电压与电源电压进行比较。 编程引脚与被定义为高，低或浮置状态的电压选择信号连接，分别通过电压选择电路确定对应于三个阈值电压的三个电平之间的设定电压。 与开关装置组合的采样/保持电路还与电压选择电路连接，使得可编程电压监控电路仅在时钟的占空比期间可操作，从而通过压缩占空比来减少其功耗。
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公开(公告)号：US08503196B2
公开(公告)日：2013-08-06
申请号：US12838988
申请日：2010-07-19
Applicant: Liang-Pin Tai , Tzu-Chen Lin , Cheng-Hsuan Fan
Inventor： Liang-Pin Tai , Tzu-Chen Lin , Cheng-Hsuan Fan
CPC classification number: H02M3/33523
Abstract: A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.
Abstract translation: 用于隔离电力转换器的反馈电路包括光耦合器和反极性调节器。 光耦合器提供与隔离功率转换器的输出电压相关的电流。 当隔离电源转换器进入轻负载时，输出电压升高，反极性调节器降低电流以降低功耗，从而提高隔离电源转换器的轻负载效率。
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20.发明授权公开(公告)号：US08373404B2
公开(公告)日：2013-02-12
申请号：US12591079
申请日：2009-11-06
Applicant: Chao-Hsuan Chuang , Ching-Hsiang Yang , Cheng-Hsuan Fan , Hung-Che Chou
Inventor： Chao-Hsuan Chuang , Ching-Hsiang Yang , Cheng-Hsuan Fan , Hung-Che Chou
CPC classification number: H02M3/33507 , H02M3/33523
Abstract: A flyback voltage converter includes a transformer having a primary winding and a secondary winding, a switch serially connected to the primary winding for being switched to produce a current in the secondary winding, and a negative lock loop to adjust the peak value of the current in the secondary winding according to a current conduction time during which the current in the secondary winding is higher than a current threshold, such that the peak value of the current in the secondary winding will be in inverse proportion to the time.
Abstract translation: 回扫电压转换器包括具有初级绕组和次级绕组的变压器，串联连接到初级绕组的开关用于切换以产生次级绕组中的电流，以及负锁定环以调整电流的峰值 次级绕组根据次级绕组中的电流的电流导通时间高于电流阈值，使得次级绕组中的电流的峰值将与时间成反比。
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