Memory detecting circuit
    1.
    发明授权
    Memory detecting circuit 失效
    存储器检测电路

    公开(公告)号:US07715266B2

    公开(公告)日:2010-05-11

    申请号:US12202335

    申请日:2008-09-01

    CPC classification number: G11C5/04 G11C5/143

    Abstract: A memory detecting circuit includes five switch elements and two indication devices. A first switch element is connected to a standby power, and also connected to memory sockets of a first channel to receive a first memory detecting signal. A second switch element is connected to the first switch element and the standby power. A third switch element is connected to the second switch element and the standby power, and also connected to memory sockets of a second channel to receive a second memory detecting signal. A fourth switch element is connected to the third switch element and the standby power. A fifth switch element is connected to the fourth switch element and the standby power. When there are memories installed into the memory sockets of the first channel and the second channel, the second indication device indicates that the memories run in a dual channel mode.

    Abstract translation: 存储器检测电路包括五个开关元件和两个指示装置。 第一开关元件连接到备用电源,并且还连接到第一通道的存储器插槽以接收第一存储器检测信号。 第二开关元件连接到第一开关元件和待机电源。 第三开关元件连接到第二开关元件和备用电源,并且还连接到第二通道的存储器插槽以接收第二存储器检测信号。 第四开关元件连接到第三开关元件和待机电源。 第五开关元件连接到第四开关元件和待机电源。 当存储器安装在第一通道和第二通道的存储器插槽中时,第二指示装置指示存储器以双通道模式运行。

    Power-on circuit for computer
    2.
    发明授权
    Power-on circuit for computer 失效
    电脑上电电路

    公开(公告)号:US07683686B2

    公开(公告)日:2010-03-23

    申请号:US12189103

    申请日:2008-08-08

    CPC classification number: G06F1/20 G06F1/26

    Abstract: A power-on circuit of a computer includes a heat sink, an SIO chip, a connector, a first electric switch, a second electric switch, and a third electric switch. When the heat sink is installed properly, the heat sink is grounded, and the first electric switch is turned off. After a power-on button is pressed down, a power supply on pin of the SIO chip sends a low level signal to turn off the second electric switch, the third electric switch is turned on, a power supply on pin of the connector is at a low level, and the computer is powered on. When the heat sink is installed improperly, the heat sink is not grounded, the first electric switch is turned on, the third electric switch is turned off, the power supply on pin of the connector is at a high level, and the computer cannot be powered on.

    Abstract translation: 计算机的通电电路包括散热器,SIO芯片,连接器,第一电开关,第二电开关和第三电开关。 当散热器安装正确时,散热器接地,第一个电开关关闭。 按下电源按钮后,SIO芯片的引脚电源发送低电平信号关闭第二个电开关,第三个电气开关打开,连接器引脚上的电源处于 电平低,电脑开机。 当散热器安装不正确时,散热器不接地,第一个电开关打开,第三个电开关关闭,连接器引脚电源处于高电平,电脑不能 打开电源

    VOLTAGE DETECTION DEVICE
    3.
    发明申请
    VOLTAGE DETECTION DEVICE 失效
    电压检测装置

    公开(公告)号:US20090313494A1

    公开(公告)日:2009-12-17

    申请号:US12195447

    申请日:2008-08-21

    CPC classification number: G06F1/26

    Abstract: An voltage detection device includes a comparator circuit comprising a first input terminal connected to a system power supply, a second input terminal connected to a standby power supply, an output terminal capable of outputting a control voltage according to comparison result; an indicator circuit; and a switch circuit connected between the standby power supply and the indicator circuit, comprising a control terminal to receive the control voltage from the comparator circuit thereby to control the standby power supply supplied to the indicator circuit or not; a power state terminal of the computer connected to a node between the standby power supply and the indicator circuit, wherein the power state terminal is at a low level when the computer is turned off. The voltage detection device can ensure that all the power supplies provide power to the computer components normally.

    Abstract translation: 电压检测装置包括:比较电路,包括连接到系统电源的第一输入端子,连接到备用电源的第二输入端子,能够根据比较结果输出控制电压的输出端子; 指示电路; 以及连接在备用电源和指示器电路之间的开关电路,包括控制端子,用于从比较器电路接收控制电压,从而控制提供给指示器电路的备用电源; 连接到备用电源和指示器电路之间的节点的计算机的电源状态终端,其中当计算机关闭时,电源状态终端处于低电平。 电压检测装置可以确保所有电源正常地为计算机组件供电。

    Start-up circuit for DC fan
    4.
    发明授权
    Start-up circuit for DC fan 失效
    直流风扇启动电路

    公开(公告)号:US07598690B2

    公开(公告)日:2009-10-06

    申请号:US11247343

    申请日:2005-10-11

    CPC classification number: H02P7/288 H02P1/18

    Abstract: A start-up circuit which decreases a start-up current and stabilizes running of a DC fan. The start-up circuit includes a digital-analog converter for convert a digital control signal from a control chip to an analog control signal, a voltage sampling device connected to an output terminal of the digital-analog converter, a comparator, a switching device for controlling start-up of the DC fan, and a feedback device adjusting current passing through the switching device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The switching device is connected to the output terminal of the comparator. An output signal of the switching device is inputted to the other input terminal of the comparator via the feedback device.

    Abstract translation: 一种降低启动电流并稳定直流风扇运行的启动电路。 启动电路包括用于将来自控制芯片的数字控制信号转换为模拟控制信号的数模转换器,连接到数模转换器的输出端的电压采样装置,比较器,用于 控制DC风扇的启动,以及调整通过开关装置的电流的反馈装置。 比较器包括两个输入端子和一个输出端子。 一个输入端子连接到电压采样装置的输出端子。 开关器件连接到比较器的输出端。 开关装置的输出信号通过反馈装置输入到比较器的另一个输入端。

    Driving circuit for LCD backlight lamps
    5.
    发明申请
    Driving circuit for LCD backlight lamps 失效
    LCD背光灯驱动电路

    公开(公告)号:US20060145634A1

    公开(公告)日:2006-07-06

    申请号:US11321474

    申请日:2005-12-29

    CPC classification number: H05B41/2855 Y02B20/186

    Abstract: An LCD backlight driving circuit is provided for providing protection to LCD backlight lamps. In a preferred embodiment, the driving circuit for LCD backlight lamps comprises: a PWM controller sending control signals; two transistors receiving the control signals and sending two low-voltage pulse signals; an inverter converting the two low-voltage pulse signals to a high-voltage AC (Alternating Current) power; two lamps; two overvoltage protection circuits connected to the two lamps respectively; a voltage feedback module connected to the two lamps, a current feedback module connected to one of the two lamps; and a double-bridge circuit connected between the two lamps, and connected to the current feedback module for controlling the PWM controller to turn-on or turn-off. The driving circuit is capable of providing defective connection protection and open-circuit protection to LCD backlight lamps, and proportionately adjusting current flowing through the lamps.

    Abstract translation: 提供LCD背光驱动电路,为LCD背光灯提供保护。 在优选实施例中,LCD背光灯的驱动电路包括:发送控制信号的PWM控制器; 两个晶体管接收控制信号并发送两个低电压脉冲信号; 将两个低压脉冲信号转换成高压AC(交流)功率的逆变器; 两盏灯 两个过电压保护电路分别连接到两个灯; 连接到两个灯的电压反馈模块,连接到两个灯之一的电流反馈模块; 和连接在两个灯之间的双桥电路,并连接到电流反馈模块,用于控制PWM控制器的导通或关断。 驱动电路能够为LCD背光灯提供有缺陷的连接保护和开路保护,并且成比例地调整流过灯的电流。

    POLYPHASE SOURCE DETECTING CIRCUIT
    6.
    发明申请
    POLYPHASE SOURCE DETECTING CIRCUIT 失效
    多相源检测电路

    公开(公告)号:US20090102673A1

    公开(公告)日:2009-04-23

    申请号:US11957498

    申请日:2007-12-17

    CPC classification number: G01R31/42

    Abstract: A polyphase source detecting circuit configured for detecting a polyphase source having at least two phase sources includes at least two sampling circuit and an alarm circuit. Each sampling circuit has a control switch. A control terminal of the control switch of each sampling circuit is connected to one of the phase sources of the polyphase source respectively. The alarm circuit has a first transistor, a first LED, and a second LED. The anodes of the first and second LEDs are connected to a power supply. The cathode of the first LED is connected to the gate of the first transistor and connected to ground via the control switches of the sampling circuits in turn. The cathode of the second LED is connected to the drain of the first transistor. The source of the first transistor grounded.

    Abstract translation: 被配置为检测具有至少两个相位源的多相源的多相源检测电路包括至少两个采样电路和报警电路。 每个采样电路都有一个控制开关。 每个采样电路的控制开关的控制端分别连接到多相源的一个相源。 报警电路具有第一晶体管,第一LED和第二LED。 第一和第二LED的阳极连接到电源。 第一LED的阴极连接到第一晶体管的栅极,并依次通过采样电路的控制开关连接到地。 第二LED的阴极连接到第一晶体管的漏极。 第一个晶体管的源极接地。

    Apparatus and method for testing PS/2 interface
    7.
    发明授权
    Apparatus and method for testing PS/2 interface 失效
    用于测试PS / 2接口的设备和方法

    公开(公告)号:US07484156B2

    公开(公告)日:2009-01-27

    申请号:US11474755

    申请日:2006-06-26

    CPC classification number: G01R31/319

    Abstract: An apparatus for automatic testing of a PS/2 interface includes a micro controller unit, a PS/2 port, and a plurality of LEDs. The micro controller unit is coupled with both a data pin and a clock pin of the PS/2 interface. The LEDs coupled to the micro controller unit simulate functions of a keyboard. A related method for testing the PS/2 interface is also provided.

    Abstract translation: 用于PS / 2接口的自动测试的装置包括微控制器单元,PS / 2端口和多个LED。 微控制器单元与PS / 2接口的数据引脚和时钟引脚相连。 耦合到微控制器单元的LED模拟键盘的功能。 还提供了一种用于测试PS / 2接口的相关方法。

    Self-startup circuit for DC fan
    8.
    发明授权
    Self-startup circuit for DC fan 失效
    直流风扇自启动电路

    公开(公告)号:US07205733B2

    公开(公告)日:2007-04-17

    申请号:US11263614

    申请日:2005-10-31

    CPC classification number: H02P1/18 H02P7/2885

    Abstract: A self-startup circuit for a DC fan includes a voltage sampling device receiving a first control signal, a comparator, and a self-startup device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The self-startup device has a switching device and a diode connected in parallel. The self-startup device has an input terminal connected to the output terminal of the comparator, and outputs a second control signal for keeping the DC fan rotating even when the first control signal has a very low duty cycle.

    Abstract translation: 用于DC风扇的自启动电路包括接收第一控制信号的电压采样装置,比较器和自启动装置。 比较器包括两个输入端子和一个输出端子。 一个输入端子连接到电压采样装置的输出端子。 自启动装置具有并联连接的开关装置和二极管。 自启动装置具有连接到比较器的输出端子的输入端子,并且即使当第一控制信号具有非常低的占空比时,也输出用于保持直流风扇旋转的第二控制信号。

    SYSTEM AND METHOD FOR TESTING A CARD READER OF A COMPUTER
    9.
    发明申请
    SYSTEM AND METHOD FOR TESTING A CARD READER OF A COMPUTER 审中-公开
    用于测试计算机的读卡器的系统和方法

    公开(公告)号:US20070080205A1

    公开(公告)日:2007-04-12

    申请号:US11308734

    申请日:2006-04-27

    CPC classification number: G06F11/2221

    Abstract: A method for testing a card reader includes the steps of: identifying a logical drive corresponding to the card reader; determining whether the card reader matches a portable storage device connected to the card reader; displaying error information if the card reader does not match the portable storage device; obtaining a control code of the portable storage device if the card reader matches the portable storage device; testing the performance of the card reader by means of reading and writing data in the portable storage device through the card reader according to the control code.

    Abstract translation: 用于测试读卡器的方法包括以下步骤:识别对应于读卡器的逻辑驱动器; 确定读卡器是否匹配连接到读卡器的便携式存储设备; 如果读卡器与便携式存储设备不匹配则显示错误信息; 如果读卡器与便携式存储设备匹配,则获得便携式存储设备的控制代码; 通过根据控制代码通过读卡器读取和写入便携式存储设备中的数据来测试读卡器的性能。

    Card for simulating peripheral component interconnect loads
    10.
    发明申请
    Card for simulating peripheral component interconnect loads 失效
    用于模拟外围组件互连负载的卡

    公开(公告)号:US20070032998A1

    公开(公告)日:2007-02-08

    申请号:US11499054

    申请日:2006-08-04

    Abstract: A card for simulating peripheral component interconnect (PCI) loads is disclosed. The card in accordance with a preferred embodiment of the invention includes an interface configured for electrically connecting to a motherboard; and a load circuit for simulating the different loads, wherein the load circuit comprises at least one power module receiving a voltage from the interface; and the power module dissipates various loads. Because that the card may dissipates various power according to testing requirement, the stability of the motherboard can be tested in various load power without connecting actual PCI loads to the motherboard.

    Abstract translation: 公开了一种用于模拟外围组件互连(PCI)负载的卡。 根据本发明的优选实施例的卡包括被配置为电连接到主板的接口; 以及用于模拟不同负载的负载电路,其中所述负载电路包括从所述接口接收电压的至少一个功率模块; 并且功率模块消耗各种负载。 因为卡可以根据测试要求耗散各种电源,所以可以在各种负载功率下测试主板的稳定性,而不会将实际的PCI负载连接到主板。

Patent Agency Ranking