公开(公告)号：US07816892B2

公开(公告)日：2010-10-19

申请号：US12143814

申请日：2008-06-22

Applicant: Pi-Fen Chen

Inventor： Pi-Fen Chen

IPC: H02J7/04 ,  H02J7/06

CPC classification number: H02J7/0072

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a constant voltage mode controller, a current sensing unit, and a reference voltage generator. The constant voltage mode controller is for comparing a battery voltage of the battery with a first reference voltage to generate a regulation signal, and utilizing the regulation signal to control the charging regulation circuit to regulate a charging current applied to the battery. The current sensing unit is for monitoring the charging current to generate an error signal. The reference voltage generator is for setting the first reference voltage according to the error signal. By adding a voltage generator to the battery charger, the overshoot charging current will be reduced and the mode transition will become smooth.

Abstract translation: 提供一种通过控制充电调节电路对电池充电的电池充电器。 电池充电器包括恒压模式控制器，电流检测单元和参考电压发生器。 恒压模式控制器用于将电池的电池电压与第一参考电压进行比较以产生调节信号，并利用调节信号来控制充电调节电路以调节施加到电池的充电电流。 电流检测单元用于监视充电电流以产生误差信号。 参考电压发生器用于根据误差信号设置第一参考电压。 通过向电池充电器添加电压发生器，过冲充电电流将减少，模式转换将变得平滑。

公开(公告)号：US07663346B2

公开(公告)日：2010-02-16

申请号：US12241087

申请日：2008-09-30

Applicant: Ying-Chung Wang ,  Pi-Fen Chen

Inventor： Ying-Chung Wang ,  Pi-Fen Chen

IPC: H02J7/24 ,  H02J7/00

CPC classification number: H02J7/0072 ,  H02J7/0029

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a current sensing unit and an operational amplifier. The current sensing unit monitors a charging current applied to the battery when the battery charger operates under a constant current mode, thereby generating a first regulation signal to the charging regulation circuit. The operational amplifier compares a battery voltage of the battery with a first reference voltage to generate a comparison result. When the battery charger operates under the constant current mode, the comparison result controls a charging mode transition from the constant current mode to a constant voltage mode. When the battery charger operates under the constant voltage mode, the comparison result acts as a second regulation signal to control the charging regulation circuit.

Abstract translation: 提供一种通过控制充电调节电路对电池充电的电池充电器。 电池充电器包括电流感测单元和运算放大器。 当电池充电器在恒定电流模式下操作时，电流感测单元监视施加到电池的充电电流，从而产生到充电调节电路的第一调节信号。 运算放大器将电池的电池电压与第一参考电压进行比较以产生比较结果。 当电池充电器在恒流模式下工作时，比较结果控制从恒流模式转换到恒压模式的充电模式。 当电池充电器在恒压模式下工作时，比较结果作为第二调节信号来控制充电调节电路。

公开(公告)号：US06574576B2

公开(公告)日：2003-06-03

申请号：US09823993

申请日：2001-04-03

Applicant: Chi-Ming Chen ,  Pi-Fen Chen

Inventor： Chi-Ming Chen ,  Pi-Fen Chen

IPC: G01R3500

CPC classification number: H04B3/145 ,  H04B3/148

Abstract: In the present invention, a transmission line length estimation circuit with continuous feedback equalizer is provided. The transmission line length estimation circuit comprises a DC bias circuit and a peak detector circuit to generate a DC voltage according to a different cable length. An equalizer core circuit is for receiving the first signal and generating a second signal. A peak detector circuit is used for the first signal and the second signal. A transmission line length detector circuit is coupled to the peak detector circuit and used for generating a plurality of first parameters for phase shift and amplitude losses according to the different cable length. An internal pattern calibration circuit is multiplexed to the first signal and used for generating a plurality of second parameters for calibration of close loop. A feedback control circuit is connected to the equalizer core circuit and used for continuously fine tuning of the equalizer core circuit according to the first parameters and the second parameters.

公开(公告)号：US20090021223A1

公开(公告)日：2009-01-22

申请号：US12241087

申请日：2008-09-30

Applicant: Ying-Chung Wang ,  Pi-Fen Chen

Inventor： Ying-Chung Wang ,  Pi-Fen Chen

IPC: H02J7/00

CPC classification number: H02J7/0072 ,  H02J7/0029

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a current sensing unit and an operational amplifier. The current sensing unit monitors a charging current applied to the battery when the battery charger operates under a constant current mode, thereby generating a first regulation signal to the charging regulation circuit. The operational amplifier compares a battery voltage of the battery with a first reference voltage to generate a comparison result. When the battery charger operates under the constant current mode, the comparison result controls a charging mode transition from the constant current mode to a constant voltage mode. When the battery charger operates under the constant voltage mode, the comparison result acts as a second regulation signal to control the charging regulation circuit.

Abstract translation: 提供一种通过控制充电调节电路对电池充电的电池充电器。 电池充电器包括电流感测单元和运算放大器。 当电池充电器在恒定电流模式下操作时，电流感测单元监视施加到电池的充电电流，从而产生到充电调节电路的第一调节信号。 运算放大器将电池的电池电压与第一参考电压进行比较以产生比较结果。 当电池充电器在恒流模式下工作时，比较结果控制从恒流模式转换到恒压模式的充电模式。 当电池充电器在恒压模式下工作时，比较结果作为第二调节信号来控制充电调节电路。

公开(公告)号：US20080252264A1

公开(公告)日：2008-10-16

申请号：US12143814

申请日：2008-06-22

Applicant: Pi-Fen Chen

Inventor： Pi-Fen Chen

IPC: H02J7/10

CPC classification number: H02J7/0072

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a constant voltage mode controller, a current sensing unit, and a reference voltage generator. The constant voltage mode controller is for comparing a battery voltage of the battery with a first reference voltage to generate a regulation signal, and utilizing the regulation signal to control the charging regulation circuit to regulate a charging current applied to the battery. The current sensing unit is for monitoring the charging current to generate an error signal. The reference voltage generator is for setting the first reference voltage according to the error signal. By adding a voltage generator to the battery charger, the overshoot charging current will be reduced and the mode transition will become smooth.

Abstract translation: 提供一种通过控制充电调节电路对电池充电的电池充电器。 电池充电器包括恒压模式控制器，电流检测单元和参考电压发生器。 恒压模式控制器用于将电池的电池电压与第一参考电压进行比较以产生调节信号，并利用调节信号来控制充电调节电路以调节施加到电池的充电电流。 电流检测单元用于监视充电电流以产生误差信号。 参考电压发生器用于根据误差信号设置第一参考电压。 通过向电池充电器添加电压发生器，过冲充电电流将减少，模式转换将变得平滑。

公开(公告)号：US06611219B1

公开(公告)日：2003-08-26

申请号：US10136551

申请日：2002-05-01

Applicant: Chu-Hua Lee ,  Pi-Fen Chen

Inventor： Chu-Hua Lee ,  Pi-Fen Chen

IPC: H03M100

CPC classification number: H04L25/065 ,  H04L7/0337 ,  H04L25/068 ,  H04L25/069

Abstract: An open-loop data recovery apparatus and method utilizing an oversampling technique is provided, by which the occurrence of data transitions is counted and a proper sampling clock phase is decided. Counters with variable thresholds are used to monitor the occurrence of phase transitions for a phase selection circuit to determine a preferred phase for recovery of sampled data. The thresholds of the counters are further adjusted in reference with the preferred phase decided by the phase selection circuit.

Abstract translation: 提供一种利用过采样技术的开环数据恢复装置和方法，通过该开环数据恢复装置和方法对数据转换的发生进行计数并且确定适当的采样时钟相位。 具有可变阈值的计数器用于监视相位选择电路的相变的发生，以确定用于恢复采样数据的优选阶段。 参考由相位选择电路确定的优选相位进一步调整计数器的阈值。

公开(公告)号：US09327321B2

公开(公告)日：2016-05-03

申请号：US13610909

申请日：2012-09-12

Applicant: Pi-Fen Chen ,  Chih-Yuan Hsu ,  Hung-I Wang

Inventor： Pi-Fen Chen ,  Chih-Yuan Hsu ,  Hung-I Wang

IPC: H02J7/00 ,  B08B3/02 ,  F26B3/08 ,  F26B3/092 ,  B08B13/00

CPC classification number: H02J7/0068 ,  B08B3/022 ,  B08B13/00 ,  B65D19/385 ,  F26B3/08 ,  F26B3/0923 ,  H02J7/0081 ,  H02J2007/0096

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device, and a power path switching unit of the electronic device is arranged to control electrical connection between a system within the electronic device and a battery of the electronic device. The method may include the steps of: performing charging port detection; and control operation(s) according to the charging port detection. For example, the method may include: controlling the power path switching unit to have different configuration according to the charging port detection in order to charge the battery with different charging profiles; and detecting the system voltage level during charging for switching from the constant current mode to the constant voltage mode.

Abstract translation: 提供了一种用于执行充电端口检测控制的方法和装置，其中该方法应用于电子设备，电子设备的通信端口具有从用于电子设备的外部电源获得电力的功能， 电子设备的路径切换单元布置成控制电子设备内的系统与电子设备的电池之间的电连接。 该方法可以包括以下步骤：执行充电端口检测; 并根据充电端口检测进行控制操作。 例如，该方法可以包括：根据充电端口检测来控制功率路径切换单元具有不同的配置，以便对具有不同充电简档的电池进行充电; 并且在充电期间检测从恒定电流模式切换到恒定电压模式的系统电压电平。

公开(公告)号：US20130119922A1

公开(公告)日：2013-05-16

申请号：US13610903

申请日：2012-09-12

Applicant: Pi-Fen Chen ,  Chieh-Wei Liao

Inventor： Pi-Fen Chen ,  Chieh-Wei Liao

IPC: H02J7/00

CPC classification number: H02J7/0036 ,  H02J7/0021 ,  H02J7/0057 ,  H02J2007/0062 ,  H02J2007/0096

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, and a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device. The method may include the steps of: detecting whether an output voltage level of a battery of the electronic device reaches a predetermined threshold value; and control operation(s) according to whether the output voltage level reaches the predetermined threshold value. For example, the method may include: when it is detected that the output voltage level is less than the predetermined threshold value, pre-charging the battery with a predetermined pre-charging current level to make the output voltage level reach the predetermined threshold value, and then controlling a detection path switching unit to electrically connect data terminal(s) of the communication port to a charging port detection circuit.

公开(公告)号：US20090261914A1

公开(公告)日：2009-10-22

申请号：US12104530

申请日：2008-04-17

Applicant: Hueh-Wu Kao ,  Pi-Fen Chen ,  Wen-Chin Hsieh

Inventor： Hueh-Wu Kao ,  Pi-Fen Chen ,  Wen-Chin Hsieh

IPC: H03B5/32

CPC classification number: H03B5/366 ,  H03B5/06 ,  H03B2200/0012 ,  H03B2200/005

Abstract: An oscillator circuit. A gain stage element is coupled between both terminals of the crystal. The gain stage element provides a transconductance for oscillation according to a current provided by a current source, and outputs a periodic signal through an output terminal. A bias element is coupled between an input terminal and the output terminal of the gain stage element to bias the gain stage element. A first capacitor is coupled to the input terminal of the gain stage element. A second capacitor is coupled to the output terminal of the gain stage element. A controller detects the periodic signal, and adjusts the current when the periodic signal is obtained.

Abstract translation: 振荡电路。 增益级元件耦合在晶体的两个端子之间。 增益级元件根据由电流源提供的电流提供用于振荡的跨导，并且通过输出端子输出周期性信号。 偏置元件耦合在输入端和增益级元件的输出端之间以偏置增益级元件。 第一电容器耦合到增益级元件的输入端子。 第二电容器耦合到增益级元件的输出端子。 控制器检测周期信号，并在获得周期信号时调整电流。

公开(公告)号：US20060113963A1

公开(公告)日：2006-06-01

申请号：US10904775

申请日：2004-11-29

Applicant: Ying-Chung Wang ,  Pi-Fen Chen

Inventor： Ying-Chung Wang ,  Pi-Fen Chen

IPC: H02J7/00

CPC classification number: H02J7/0072 ,  H02J7/0029

Abstract: The present invention provides a battery charger and a method for preventing both an overshoot charging current and an overcharged battery voltage during a mode transition. The battery charger includes a charging regulation circuit having an input terminal, an output terminal, and a control terminal, wherein the charging regulation circuit outputs a charging current whose amount is regulated based on a first regulation signal at the control terminal; an operational amplifier having a positive input terminal, a negative input terminal, and an output terminal for generating the first regulation signal; a first switch unit; and a second switch unit.

Abstract translation: 本发明提供了一种电池充电器和在模式转换期间既防止过冲充电电流又产生过充电电池电压的方法。 电池充电器包括具有输入端子，输出端子和控制端子的充电调节电路，其中充电调节电路基于控制端子处的第一调节信号输出其量被调节的充电电流; 具有正输入端的运算放大器，负输入端和用于产生第一调节信号的输出端; 第一开关单元; 和第二开关单元。