公开(公告)号：US20090128220A1

公开(公告)日：2009-05-21

申请号：US11961151

申请日：2007-12-20

申请人： Ni-li Chen ,  Shih-Hao Liu

发明人： Ni-li Chen ,  Shih-Hao Liu

IPC分类号： H03K17/687

CPC分类号： H03K17/687

摘要： An isolation circuit is provided. The isolation circuit is coupled between a master circuit and a slave circuit for isolating or conducting an inter integrated circuit (I2C) signal. While the master circuit has electricity and the slave circuit does not, the isolation circuit isolates the master circuit to prevent the I2C signal being transmitted to the slave circuit. While the master circuit and the slave circuit have electricity, the isolation circuit conducts the master circuit to transmit the I2C signal to the slave circuit. The present invention solves the signal isolation problem between the master and slave circuits, and also improves the operational stability of an I2C bus.

摘要翻译： 提供隔离电路。 隔离电路耦合在主电路和从电路之间，用于隔离或导通集成电路（I2C）信号。 当主电路有电并且从电路没有时，隔离电路隔离主电路，以防止I2C信号传输到从电路。 当主电路和从电路有电时，隔离电路使主电路传输I2C信号到从电路。 本发明解决了主从电路之间的信号隔离问题，并且还提高了I2C总线的操作稳定性。

公开(公告)号：US08035360B2

公开(公告)日：2011-10-11

申请号：US12416618

申请日：2009-04-01

申请人： Chun-Hua Xia ,  Shih-Hao Liu

发明人： Chun-Hua Xia ,  Shih-Hao Liu

IPC分类号： G05F1/59

CPC分类号： H02M1/36 ,  H02M3/156 ,  Y10S323/901

摘要： A power converting device including a pulse width modulation circuit, a switch unit, a power output unit and a voltage start unit is provided. The pulse width modulation circuit increases a start voltage in a soft start mode and is operated under the start voltage to generate a pulse width modulation signal. The switch unit is for receiving an input voltage, and forming a charge path and a discharge path alternately according to the pulse width modulation signal. The power output unit converts the input voltage to a core voltage in accordance with the charge path and the discharge path. The voltage start unit is for detecting the start voltage, and for transmitting a control signal to interrupt the formation of the discharge path when the start voltage is smaller than the core voltage.

摘要翻译： 提供了包括脉宽调制电路，开关单元，电力输出单元和电压启动单元的电力转换装置。 脉宽调制电路在软启动模式下增加启动电压，并在启动电压下工作，产生脉宽调制信号。 开关单元用于接收输入电压，并且根据脉冲宽度调制信号交替地形成充电路径和放电路径。 功率输出单元根据充电路径和放电路径将输入电压转换为核心电压。 电压启动单元用于检测启动电压，并且用于在起动电压小于铁芯电压时发送用于中断形成放电路径的控制信号。

公开(公告)号：US07839026B2

公开(公告)日：2010-11-23

申请号：US12220778

申请日：2008-07-28

申请人： Lan Huang ,  Shih-Hao Liu

发明人： Lan Huang ,  Shih-Hao Liu

IPC分类号： H01H47/00

CPC分类号： H05K9/0067

摘要： A power discharge control system for eliminating residual voltage of electronic components in an electronic device, is proposed, which includes a control IC for outputting first electrical signals of a first level and a second level respectively corresponding to power on and power off of the electronic device; a power supply for receiving the first electrical signal, and providing or terminating operation power to the electronic component accordingly, and delaying outputting of a second electrical signal equivalent to the first electrical signal level; a logic judgment module connected to the control IC and the power supply for receiving the first and the second electrical signals for executing logic operation process, when at least one of the first and the second electrical signals is at the first level, a third electrical signal of a third level is outputted, when both the first and the second electrical signals are at the second level, a third electrical signal of a fourth level is outputted; and at least a discharge module for receiving the third electrical signal, when the third electrical signal is at the third level, the discharge process is skipped, when the third electrical signal is at the fourth level, the discharge process is executed.

摘要翻译： 提出了一种用于消除电子设备中的电子部件的残余电压的放电控制系统，其包括用于分别输出对应于电子设备的通电和断电的第一电平和第二电平的第一电信号的控制IC ; 电源，用于接收第一电信号，并相应地向电子组件提供或终止操作电力，并延迟输出等效于第一电信号电平的第二电信号; 连接到控制IC的逻辑判断模块和用于在第一和第二电信号中的至少一个处于第一电平时接收用于执行逻辑运算处理的第一和第二电信号的电源，第三电信号 当第一和第二电信号均处于第二电平时，输出第三电平的第三电平的第三电信号; 以及至少一个用于接收第三电信号的放电模块，当第三电信号处于第三电平时，跳过放电过程，当第三电信号处于第四电平时，执行放电处理。

公开(公告)号：US07795854B2

公开(公告)日：2010-09-14

申请号：US12015917

申请日：2008-01-17

申请人： Chun-Hua Xia ,  Xiao-Ru Wu ,  Li Zeng ,  Da-Wei Hu ,  Shih-Hao Liu

发明人： Chun-Hua Xia ,  Xiao-Ru Wu ,  Li Zeng ,  Da-Wei Hu ,  Shih-Hao Liu

IPC分类号： G05F1/40

CPC分类号： H02M3/156

摘要： A voltage regulating circuit including an error signal generator, a comparator, a switch unit, a low-pass filter and a modulating unit is provided. The error signal generator respectively receives a reference voltage signal and a feedback signal, and generates an error signal. The comparator respectively receives the error signal and a comparing signal, and generates a pulse width modulation signal. The switch unit regulates an input voltage signal to generate an output voltage signal according the pulse width modulation signal. The low-pass filter filters out the high frequency of the output signal and produces the feedback signal. The modulating unit is coupled to the low-pass filter and the error signal generator for regulating a transient voltage of the output voltage signal.

摘要翻译： 提供了包括误差信号发生器，比较器，开关单元，低通滤波器和调制单元的电压调节电路。 误差信号发生器分别接收参考电压信号和反馈信号，并产生误差信号。 比较器分别接收误差信号和比较信号，并产生脉宽调制信号。 开关单元调节输入电压信号以根据脉宽调制信号产生输出电压信号。 低通滤波器滤除输出信号的高频，并产生反馈信号。 调制单元耦合到低通滤波器和误差信号发生器，用于调节输出电压信号的瞬态电压。

公开(公告)号：US20100138074A1

公开(公告)日：2010-06-03

申请号：US12401105

申请日：2009-03-10

申请人： Li-Hong Huang ,  Hai-Ming Luo ,  Shih-Hao Liu

发明人： Li-Hong Huang ,  Hai-Ming Luo ,  Shih-Hao Liu

IPC分类号： G05D23/00

CPC分类号： G06F1/206 ,  Y02D10/16

摘要： A computer system including a chassis, a plurality of motherboards, a fan control module and a plurality of fans is provided. A plurality of motherboard position signal generating units is disposed in the chassis. Each of the motherboards includes a signal generating circuit and a board management controller. The signal generating circuit coordinates with one of the motherboard position signal generating units to generate a motherboard position signal. The board management controller receives the motherboard position signal and a motherboard working temperature signal to output a motherboard working state signal. The fan control module coupled to the board management controller of each of the motherboards receives the motherboard working state signals and generates a plurality of fan control signals accordingly. The fans coupled to the fan control module determine operation according the fan control signals.

摘要翻译： 提供了包括底盘，多个母板，风扇控制模块和多个风扇的计算机系统。 多个主板位置信号发生单元设置在底盘中。 每个主板包括信号发生电路和电路板管理控制器。 信号发生电路与主板位置信号发生单元之一协调，以产生母板位置信号。 板管理控制器接收主板位置信号和主板工作温度信号，输出主板工作状态信号。 耦合到每个主板的板管理控制器的风扇控制模块接收主板工作状态信号并相应地产生多个风扇控制信号。 与风扇控制模块相连的风扇根据风扇控制信号确定运行。

公开(公告)号：US08819400B2

公开(公告)日：2014-08-26

申请号：US12419475

申请日：2009-04-07

申请人： Lan-Lan Fang ,  Shih-Hao Liu

发明人： Lan-Lan Fang ,  Shih-Hao Liu

IPC分类号： G06F15/177 ,  G06F13/38

CPC分类号： G06F13/385 ,  G06F15/177

摘要： A computer apparatus is disclosed. The computer apparatus mentioned above includes a main board and an external sub-board. The main board includes a connector, a management chip, a first basic input output system and a selector. The external sub-board includes an external input output system. The management chip detects a coupling state of the main board and the external sub-board, and generates a detecting signal. The selector enables one of the first basic input output system and the external input output system and disables the other one.

摘要翻译： 公开了一种计算机装置。 上述计算机装置包括主板和外部子板。 主板包括连接器，管理芯片，第一基本输入输出系统和选择器。 外部子板包括一个外部输入输出系统。 管理芯片检测主板和外部子板的耦合状态，并产生检测信号。 选择器可以启用第一个基本输入输出系统和外部输入输出系统之一，并禁用另一个。

公开(公告)号：US08438384B2

公开(公告)日：2013-05-07

申请号：US13012815

申请日：2011-01-25

申请人： Ming-Chuan Kao ,  Qing-Hua Li ,  Shih-Hao Liu ,  Li-Na Dai ,  Kai-Ying Hu ,  Zhong-Wei Li

发明人： Ming-Chuan Kao ,  Qing-Hua Li ,  Shih-Hao Liu ,  Li-Na Dai ,  Kai-Ying Hu ,  Zhong-Wei Li

IPC分类号： H04L29/06

CPC分类号： H04L63/0876 ,  H04L9/3226 ,  H04L63/0869

摘要： A system and method for performing mutual authentication verifies a username and a password of a handheld device by a server, and verifies an identity of the server by the handheld device if the handheld device passes the username and password verification. The system and method further verifies an identity of the handheld device by the server if the identity of the server is valid, and gives an access authority to the handheld device if the identity of the handheld device is valid.

摘要翻译： 用于执行相互认证的系统和方法由服务器验证手持设备的用户名和密码，并且如果手持设备通过用户名和密码验证，则由手持设备验证服务器的身份。 如果服务器的身份有效，则系统和方法进一步验证服务器的手持设备的身份，并且如果手持设备的身份有效，则给予手持设备的访问权限。

公开(公告)号：US07615946B2

公开(公告)日：2009-11-10

申请号：US12015928

申请日：2008-01-17

申请人： Jie-guang Zhang ,  Shih-Hao Liu

发明人： Jie-guang Zhang ,  Shih-Hao Liu

IPC分类号： H02P7/00

CPC分类号： H02P7/29

摘要： A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a serial input and output interface or an indicative signal of the baseboard management control to indicate a power-on status. At the power-on moment, the fan speed control device controls the fan to operate at its minimum speed, so that a system crash due to a power output shortage of a power supply can be avoided. As the system enters stable operation, the fan speed is controlled by a pulse width modulation signal.

摘要翻译： 风扇速度控制装置包括管理选择模块，第一和第二缓冲器，电阻器，晶体管和开关。 根据主板是否支持基板管理控制的系统，风扇速度控制装置选择性地使用串行输入和输出接口的指示信号或者基板管理控制的指示信号来指示开机状态。 在通电时，风扇速度控制装置控制风扇以其最小速度运行，从而可以避免由于电源输出不足导致的系统崩溃。 随着系统进入稳定运行，风扇转速由脉宽调制信号控制。

公开(公告)号：US20090231886A1

公开(公告)日：2009-09-17

申请号：US12101751

申请日：2008-04-11

申请人： Chun-Hua Xia ,  Shih-Hao Liu

发明人： Chun-Hua Xia ,  Shih-Hao Liu

IPC分类号： H02M3/335 ,  H02M1/00

CPC分类号： H02M3/33507 ,  H02M2001/0006

摘要： A power supply and a bootstrap circuit thereof are provided. The bootstrap circuit includes a transistor, a first capacitor, a first impedance and a regulator circuit. The collector and the emitter of the transistor respectively serve as the input terminal and the output terminal of the bootstrap circuit. A terminal of the first capacitor is coupled to the collector of the transistor. A terminal of the first impedance is coupled to another terminal of the first capacitor. The regulator circuit is coupled to another terminal of the first impedance and the base of the transistor for clamping the voltage of the above-mentioned base at a predetermined voltage level.

摘要翻译： 提供电源及其自举电路。 自举电路包括晶体管，第一电容器，第一阻抗和调节器电路。 晶体管的集电极和发射极分别用作自举电路的输入端和输出端。 第一电容器的端子耦合到晶体管的集电极。 第一阻抗的端子耦合到第一电容器的另一个端子。 调节器电路耦合到第一阻抗的另一个端子和晶体管的基极，用于将上述基极的电压钳位在预定电压电平。

公开(公告)号：US20090230937A1

公开(公告)日：2009-09-17

申请号：US12110892

申请日：2008-04-28

申请人： Chun-Hua Xia ,  Shih-Hao Liu

发明人： Chun-Hua Xia ,  Shih-Hao Liu

IPC分类号： G05F1/46

CPC分类号： G05F1/70 ,  H02M1/4225 ,  Y02B70/126

摘要： A power factor correction circuit including a boost converter, a first capacitor, a first resistor, and a boost control unit is provided. The boost control unit includes a signal generator and a frequency controller. The boost converter transforms a rectified voltage to a correction voltage according to a pulse width modulation (PWM) signal. The first capacitor and the first resistor are coupled between an input terminal and a ground terminal of the boost converter. The boost control unit is adapted to generate the PWM signal, and adjust a duty cycle and a frequency of the PWM signal according to a current flowing through the first resistance, the rectified voltage and the correction voltage. Wherein, the signal generator is adapted to generate a ramp signal and adjust a slope of the ramp signal according to a charging current. The frequency controller adjusts the charging current according to the rectified voltage.

摘要翻译： 提供了包括升压转换器，第一电容器，第一电阻器和升压控制单元的功率因数校正电路。 升压控制单元包括信号发生器和频率控制器。 升压转换器根据脉宽调制（PWM）信号将整流电压转换为校正电压。 第一电容器和第一电阻器耦合在升压转换器的输入端子和接地端子之间。 升压控制单元适于产生PWM信号，并且根据流过第一电阻，整流电压和校正电压的电流来调整PWM信号的占空比和频率。 其中，信号发生器适于产生斜坡信号，并根据充电电流调整斜坡信号的斜率。 频率控制器根据整流电压调节充电电流。