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1. 发明授权

US09000688B2 Control circuit for light emitting diode of display 有权
标题翻译：显示器用发光二极管控制电路
公开(公告)号：US09000688B2
公开(公告)日：2015-04-07
申请号：US13517570
申请日：2012-06-13
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： H05B41/00 , H05B33/08
CPC分类号： H05B33/08 , H05B33/0803
摘要： A control circuit for light emitting diode (LED) of display includes a central processing unit (CPU), an AND gate, and a driving circuit. The CPU comprises a general purpose input output (GPIO) contact which outputs an instant high level voltage when a battery is installed into a portable electronic device. The AND gate includes a first input contact connected to the GPIO contact, a second input contact connected to a system power supply, and a first output contact. The system power supply outputs a low level voltage when the electronic device is powered off and outputs a high level voltage when the electronic device is powered on. The driving circuit includes a second output contact connected to an anode of the LED, a feedback contact connected to a cathode of the LED and an enable connected to the first output contact.
摘要翻译：用于显示器的发光二极管（LED）的控制电路包括中央处理单元（CPU），与门和驱动电路。 CPU包括通用输入输出（GPIO）接点，当将电池安装到便携式电子设备中时，该触点输出即时高电平电压。与门包括连接到GPIO触点的第一输入触点，连接到系统电源的第二输入触点和第一输出触点。当电子设备断电时，系统电源输出低电平电压，并在电子设备通电时输出高电平电压。驱动电路包括连接到LED的阳极的第二输出触点，连接到LED的阴极的反馈触点和连接到第一输出触点的使能。

2. 发明授权

US08724824B2 Portable electronic device having universal earphone jack 有权
标题翻译：具有通用耳机插孔的便携式电子设备
公开(公告)号：US08724824B2
公开(公告)日：2014-05-13
申请号：US13046793
申请日：2011-03-14
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： H04R1/10
CPC分类号： H04R3/00 , H04R2420/05 , H04R2499/11
摘要： A portable electronic device includes an earphone jack circuit for receiving an earphone plug, a control circuit and a switch circuit. The control circuit sends audio to or receives audio from the earphone plug by the earphone jack. The switch circuit is set between the earphone jack and the control circuit including a first mode and a second mode. The control circuit identifies a type of the earphone plug, and switches the switch circuit to a corresponding mode according to the type of the earphone plug.
摘要翻译：便携式电子设备包括用于接收耳机插头的耳机插孔电路，控制电路和开关电路。控制电路通过耳机插孔从耳机插头发送音频或接收音频。开关电路设置在耳机插孔和包括第一模式和第二模式的控制电路之间。控制电路识别耳机插头的类型，并根据耳机插头的类型将开关电路切换到相应的模式。

3. 发明授权

US08627121B2 USB-on-the-go bi-directional protection circuit 有权
标题翻译： USB随身携带双向保护电路
公开(公告)号：US08627121B2
公开(公告)日：2014-01-07
申请号：US13078850
申请日：2011-04-01
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： G06F1/26
CPC分类号： H02J7/0031 , H02J2007/0062
摘要： A power management circuit for managing power of an electronic device includes a regulator and a protection circuit. The regulator converts an input voltage into a corresponding rated voltage and includes an enable pin and an output pin. The enable pin receives a voltage signal to enable or disable the regulator, and the output pin selectively outputs the rated voltage. When the electronic device is implemented as a slave universal serial bus (USB) device and the enable pin receives a low voltage signal, the regulator is disabled, and the protection circuit receives an output voltage. When the electronic device is implemented as a USB host and the enable pin receives a high voltage signal, the regulator is enabled, and the output protection circuit outputs the rated voltage.
摘要翻译：用于管理电子设备的电源的电源管理电路包括调节器和保护电路。调节器将输入电压转换为相应的额定电压，并包括使能引脚和输出引脚。使能引脚接收电压信号以使能或禁止稳压器，输出引脚有选择地输出额定电压。当电子设备实现为从属通用串行总线（USB）设备，使能引脚接收低电压信号时，调节器被禁止，保护电路接收输出电压。当电子设备实现为USB主机，使能引脚接收高压信号时，调节器使能，输出保护电路输出额定电压。

4. 发明授权

US09552028B2 Portable electronic device and voltage converting circuit thereof 有权
标题翻译：便携式电子设备及其电压转换电路
公开(公告)号：US09552028B2
公开(公告)日：2017-01-24
申请号：US13655404
申请日：2012-10-18
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： H02J1/10 , H02J3/38 , H02J7/34 , G06F1/26
CPC分类号： G06F1/26 , Y10T307/305
摘要： A portable electronic device includes a battery, a central processing unit (CPU), and voltage converting circuit. The battery includes an erasable programmable read-only memory (EPROM) and a signal terminal connected to the EPROM. The CPU includes a read/write control terminal. The voltage converting circuit includes a first power terminal connected to a first power supply, a second power terminal connected to a second power supply, a first port connected to the read/write control terminal through a 1-wire bus, and a second port connected to the signal terminal.
摘要翻译：便携式电子设备包括电池，中央处理单元（CPU）和电压转换电路。电池包括可擦除可编程只读存储器（EPROM）和连接到EPROM的信号端子。 CPU包括读/写控制端。电压转换电路包括连接到第一电源的第一电源端子，连接到第二电源的第二电源端子，通过1线总线连接到读/写控制端子的第一端口和连接到第二电源端口的第二端口到信号端子。

5. 发明授权

US08742731B2 Voltage conversion circuit and charging device employing the same 有权
标题翻译：电压转换电路及其采用的充电装置
公开(公告)号：US08742731B2
公开(公告)日：2014-06-03
申请号：US13010791
申请日：2011-01-21
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： H02J7/00
CPC分类号： H02J7/00 , H02J2007/0062 , Y02B40/90
摘要： A voltage conversion circuit for a charging device includes a voltage-stabilizing circuit and a switching circuit. The voltage-stabilizing circuit includes a voltage stabilizer circuit and a feedback resistor, the voltage stabilizer circuit comprises an input pin, an output pin, and a feedback pin. The switching circuit includes a switch and at least two divider resistors, the switch comprises at least two data input terminals, a data output terminal, and two control terminals. The input pin is connected to a power source, and the feedback resistor is connected between the feedback pin and ground. The data input terminals are respectively connected to the output pin through one of the divider resistors, the data output terminal is connected between the feedback pin and the feedback resistor, the two control terminals are capable of receiving control signals to control the data output terminal to selectively connect to one of the data input terminals.
摘要翻译：用于充电装置的电压转换电路包括电压稳定电路和开关电路。电压稳定电路包括电压稳定器电路和反馈电阻器，稳压器电路包括输入引脚，输出引脚和反馈引脚。开关电路包括开关和至少两个分压电阻器，开关包括至少两个数据输入端子，数据输出端子和两个控制端子。输入引脚连接到电源，反馈电阻连接在反馈引脚和地之间。数据输入端分别通过分压电阻连接到输出引脚，数据输出端连接在反馈引脚和反馈电阻之间，两个控制端能够接收控制信号，控制数据输出端选择性地连接到数据输入端子之一。

6. 发明授权

US08552691B2 Charging circuit with function of avoiding battery pulling down voltage output from charging device and charging method thereof 有权
标题翻译：充电电路具有避免电池从充电装置向下拉出电压的功能及其充电方法
公开(公告)号：US08552691B2
公开(公告)日：2013-10-08
申请号：US13031260
申请日：2011-02-21
申请人： Hai-Zhou Wu
发明人： Hai-Zhou Wu
IPC分类号： H02J7/00
CPC分类号： H02J7/045 , H02J2007/0062
摘要： A charging circuit includes a main control microchip, a charging integrated circuit, and a current control circuit. The main control microchip includes a power-on pin connected to a charging device. The charging integrated circuit comprises a power input pin and a current limit pin, wherein the power input pin is connected to the charging device, and the charging integrated circuit is capable of limiting current. The current control circuit comprises a transistor, a first current limiting resistor and a second current limiting resistor, a base of the transistor is connected to the main control microchip, the first current limiting resistor is connected between the current limit pin and ground, and the second current limiting resistor is connected between the current limit pin and a collector of the transistor, the main control microchip is operable to output control signals to enable or disable the transistor.
摘要翻译：充电电路包括主控微芯片，充电集成电路和电流控制电路。主控芯片包括连接到充电装置的上电引脚。充电集成电路包括电源输入引脚和限流引脚，其中电源输入引脚连接到充电装置，并且充电集成电路能够限制电流。电流控制电路包括晶体管，第一限流电阻和第二限流电阻，晶体管的基极连接到主控微芯片，第一限流电阻连接在限流引脚与地之间，第二限流电阻连接在电流限制引脚和晶体管的集电极之间，主控制微芯片可操作以输出控制信号以使能或禁用晶体管。

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