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    • 11. 发明授权
    • Light control signal generating circuit
    • 光控制信号发生电路
    • US08471478B2
    • 2013-06-25
    • US13095927
    • 2011-04-28
    • Ji-Xiang YinRen-Wen HuangJun-Wei ZhangJun ZhangTsung-Jen Chuang
    • Ji-Xiang YinRen-Wen HuangJun-Wei ZhangJun ZhangTsung-Jen Chuang
    • H05B37/02
    • G01J1/32G01J1/44H05B37/0218Y02B20/46Y02B20/48
    • A light control signal generating circuit includes a photosensitive element, two transistors, and four resistances. A first resistance and the photosensitive element are connected in series between a power voltage terminal and a ground terminal. A base electrode of a first transistor is connected to a node between the first resistance and the photosensitive element, a collecting electrode is connected to the power voltage terminal through a second resistance, and an emitting electrode is connected to the ground terminal through a third resistance. A base electrode of a second transistor is connected to a node between the second resistance and the first transistor, a collecting electrode is connected to the power voltage terminal through a fourth resistance, and an emitting electrode is connected to the ground terminal through the third resistance. An output terminal is formed from a node between the fourth resistance and the second transistor.
    • 光控制信号发生电路包括光敏元件,两个晶体管和四个电阻。 第一电阻和感光元件串联连接在电源电压端子和接地端子之间。 第一晶体管的基极连接到第一电阻和感光元件之间的节点,集电极通过第二电阻连接到电源电压端子,并且发射电极通过第三电阻连接到接地端子 。 第二晶体管的基极连接到第二电阻和第一晶体管之间的节点,集电极通过第四电阻连接到电源电压端子,并且发射电极通过第三电阻连接到接地端子 。 输出端由第四电阻和第二晶体管之间的节点形成。
    • 12. 发明授权
    • Power supply
    • 电源
    • US07714568B2
    • 2010-05-11
    • US11952142
    • 2007-12-07
    • Shih-Fang WongTsung-Jen ChuangJun ZhangJun-Wei Zhang
    • Shih-Fang WongTsung-Jen ChuangJun ZhangJun-Wei Zhang
    • G01R7/00
    • G01R31/40G01R15/125G01R31/2808
    • A power supply is for receiving an AC voltage and outputting a DC voltage and an output current to an electronic device. The power supply includes an input module, an output module, a measuring interface, a measuring interface, and a switch module. The input module is for receiving the AC voltage. The output module is for outputting the DC voltage and the output current to the electronic device. The measuring interface is for electrically contacting with a part of the electronic device. The measuring module is for measuring the DC voltage, the output current, and a voltage and a current of the part of the electronic device. The switch module is for choosing one of the output module and the measuring interface to be electrically connected to the measuring module.
    • 电源用于接收交流电压并向电子设备输出直流电压和输出电流。 电源包括输入模块,输出模块,测量接口,测量接口和开关模块。 输入模块用于接收交流电压。 输出模块用于向电子设备输出直流电压和输出电流。 测量接口用于与电子设备的一部分电接触。 测量模块用于测量电子设备的直流电压,输出电流以及电压和电流。 开关模块用于选择电气连接到测量模块的输出模块和测量接口之一。
    • 16. 发明授权
    • Overvoltage and overcurrent protection circuit
    • 过电压和过流保护电路
    • US08472157B2
    • 2013-06-25
    • US13207431
    • 2011-08-11
    • Ji-Xiang YinYang XinYin-Zhan WangJun ZhangTsung-Jen ChuangShih-Fang Wong
    • Ji-Xiang YinYang XinYin-Zhan WangJun ZhangTsung-Jen ChuangShih-Fang Wong
    • H02H3/00H02H3/20H02H9/04H02H3/08H02H9/02
    • H02H3/08H02H3/20
    • An overvoltage and overcurrent protection circuit includes a connection jack, an overvoltage protection switch connected to the connection jack, an overcurrent protection switch, a voltage reference module, an overvoltage and overcurrent detection module, a comparing module, and a current control module. The overcurrent protection switch is connected to the overvoltage protection switch in serials, and further connected to a load. The voltage reference module is to output a reference voltage. The overvoltage and overcurrent detection module is to detect the voltage of the load and the current of the path. The comparing module is to compare the voltage of the load with the reference voltage, when greater, turns off the overvoltage protection switch, when not greater, turns on the overvoltage protection switch. The current control module is to turn off the overcurrent protection switch if greater than the preset value, and turn on the overcurrent protection switch if not greater.
    • 过电压和过流保护电路包括连接插座,连接插座的过电压保护开关,过流保护开关,电压参考模块,过电压和过电流检测模块,比较模块和电流控制模块。 过流保护开关连接到过压保护开关,并连接到负载。 电压基准模块输出参考电压。 过电压和过流检测模块用于检测负载电压和路径电流。 比较模块是将负载电压与参考电压进行比较,当较大时,关断过电压保护开关,当不大时,接通过电压保护开关。 当前的控制模块是关闭过流保护开关,如果大于预设值,并且如果不是更大的话,打开过流保护开关。
    • 17. 发明授权
    • Analog to digital converter
    • 模数转换器
    • US08395540B2
    • 2013-03-12
    • US13213099
    • 2011-08-19
    • Qi-Long YuJun ZhangTsung-Jen ChuangShih-Fang Wong
    • Qi-Long YuJun ZhangTsung-Jen ChuangShih-Fang Wong
    • H03M1/56
    • H03M1/56
    • An ADC includes an analog signal input port for receiving analog signals, a reference voltage generation circuit for producing a reference voltage, a controllable switch, a control unit including a counter, an integral circuit, and a comparison circuit. The control unit outputs an on or off signal to turn on or turn off the controllable switch, the counter starts to count when the control unit outputs the off signal. The integral circuit executes an integral action to integrate the reference voltage and output a voltage enhanced gradually when the controllable switch is turned off. The comparison circuit outputs an interrupt signal to cause the counter to stop counting when comparing the voltage output by the integral circuit is higher than the voltage of the analog signals. The control unit determines a digital value corresponding to the analog signals according to a count value of counted by the counter.
    • ADC包括用于接收模拟信号的模拟信号输入端口,用于产生参考电压的参考电压产生电路,可控开关,包括计数器,积分电路和比较电路的控制单元。 控制单元输出开启或关闭信号以打开或关闭可控开关,当控制单元输出关闭信号时,计数器开始计数。 积分电路执行积分动作以集成参考电压,并在可控开关关闭时逐渐输出增强的电压。 当比较积分电路的电压高于模拟信号的电压时,比较电路输出中断信号使计数器停止计数。 控制单元根据由计数器计数的计数值来确定与模拟信号相对应的数字值。
    • 18. 发明授权
    • Scanning circuit and scanning method for keyboard
    • 键盘扫描电路及扫描方式
    • US08258985B2
    • 2012-09-04
    • US12780946
    • 2010-05-17
    • Ren-Wen HuangJun ZhangLin-Kun DingTsung-Jen Chuang
    • Ren-Wen HuangJun ZhangLin-Kun DingTsung-Jen Chuang
    • H03M11/00
    • G06F3/0202H03M11/20
    • A scanning circuit includes n input ports K1˜Kn arranged in n rows L1˜Ln; and m−2 output ports W2˜(m−1) arranged in m columns P1˜Pm. The n rows and the m columns define a switch matrix including n*m switches. Ends of the switches in the same row are connected to one of the n input ports K1˜Kn, respectively. The ends of the switches in the column P1 are connected to ground. The ends of the switches in the same column of the columns P2˜P(m−1) are connected to a power supply VCC via resistors R2˜R(m−1) and the m−2 output ports W2˜W(m−1), respectively. The ends of the switches in the columns Pm are connected to ground via a resistor Rs and the power supply VCC via the resistors R2˜R(m−1) and diodes D2˜D(m−1), respectively.
    • 扫描电路包括以n行L1〜Ln排列的n个输入端口K1〜Kn, 和布置在m列P1〜Pm中的m-2个输出端口W2〜(m-1)。 n行和m列定义了包括n * m个开关的开关矩阵。 相同行中的开关的端部分别连接到n个输入端口K1〜Kn中的一个。 列P1中的开关的端部连接到地。 列P2〜P(m-1)的同一列中的开关的端部经由电阻器R2〜R(m-1)和m-2输出端口W2〜W(m- 1)。 列Pm中的开关的端部经由电阻器Rs和电源VCC经由电阻器R2〜R(m-1)和二极管D2〜D(m-1)分别连接到地。
    • 19. 发明授权
    • Apparatus and method for subscribing to international roaming plan for communication device
    • 订阅通信设备的国际漫游计划的装置和方法
    • US08977256B2
    • 2015-03-10
    • US13662674
    • 2012-10-29
    • Cheng-Zhi LiJun-Wei ZhangJun Zhang
    • Cheng-Zhi LiJun-Wei ZhangJun Zhang
    • H04W4/00H04M3/42H04W24/00
    • H04W8/18H04W4/02H04W8/12
    • A computerized method for subscribing an international roaming plan for a communication device, the communication device includes an electronic map. At least one border checkpoint of a predetermined country can be determined on the electronic map. A distance between a current location of the communication device and the location of the at least one border checkpoint is calculated. When the calculated distance is less than a predetermined distance and the current location of the communication device is within the home country, a user may be prompted to select whether to subscribe to an international roaming plan for a particular period of time. A preset message is sent to a predetermined service terminal provided by a telecommunication company to subscribe to the international roaming plan for the communication device when the user makes a selection to subscribe to the international roaming plan for the communication device.
    • 一种用于订阅通信设备的国际漫游计划的计算机化方法,所述通信设备包括电子地图。 可以在电子地图上确定预定国家的至少一个边界检查点。 计算通信装置的当前位置与至少一个边界检查点的位置之间的距离。 当计算出的距离小于预定距离并且通信设备的当前位置在本国之内时,可以提示用户选择是否在特定时间段内订阅国际漫游计划。 当用户进行选择以订阅通信设备的国际漫游计划时,预设消息被发送到由电信公司提供的预定服务终端订阅通信设备的国际漫游计划。