公开(公告)号：US20080192396A1

公开(公告)日：2008-08-14

申请号：US11936763

申请日：2007-11-07

申请人： Xiang-Ping Zhou ,  Lin-Kun Ding ,  Shih-Fang Wong

发明人： Xiang-Ping Zhou ,  Lin-Kun Ding ,  Shih-Fang Wong

IPC分类号： H02H3/20

CPC分类号： H02H3/207

摘要： An over-voltage protection circuit is provided herein for protecting a load from an over-voltage condition, and that does not cause a reverse voltage. The over-voltage protection circuit includes a first switch circuit and a second switch circuit. The first switch circuit is for outputting a switch-on signal when the input voltage is lower than or equal to a predetermined value and a switch-off signal when the input voltage is higher than the predetermined value. The second switch circuit for conducting the input voltage to the load when receiving the switch-on signal. An over-voltage protection method is also provided.

摘要翻译： 本文提供了一种过电压保护电路，用于保护负载免受过电压状况的影响，并且不产生反向电压。 过电压保护电路包括第一开关电路和第二开关电路。 第一开关电路用于当输入电压低于或等于预定值时输出接通信号，并且当输入电压高于预定值时用于断开信号。 第二开关电路，用于在接收接通信号时将输入电压传导到负载。 还提供过电压保护方法。

公开(公告)号：US08180033B2

公开(公告)日：2012-05-15

申请号：US12099172

申请日：2008-04-08

申请人： Lin-Kun Ding ,  Shih-Fang Wong ,  Xiang-Ping Zhou ,  Jiang-Feng Shan ,  Gui-Rong Zhou

发明人： Lin-Kun Ding ,  Shih-Fang Wong ,  Xiang-Ping Zhou ,  Jiang-Feng Shan ,  Gui-Rong Zhou

IPC分类号： H04M3/00

CPC分类号： H04M1/66

摘要： A telephone line monitoring device is connected to a telephone line and adjacent to a telephone device using the telephone line. The telephone line monitoring device includes a rectifying circuit for generating a corresponding direct current voltage according to an effective voltage of the telephone line; a first controller for generating a first control signal when the direct current voltage is lower than a predetermined voltage; a second controller for detecting an operating state of the telephone device and generating a second control signal when the telephone device is operated; a load booster for pulling down the effective voltage of the telephone line when enabled; and a first switch circuit for disabling the load booster whenever receiving the second control signal, and enabling the load booster when receiving the first control signal while not receiving the second control signal. A monitoring method and a telephone device are also provided.

摘要翻译： 电话线监视装置使用电话线连接到电话线并且与电话装置相邻。 电话线监视装置包括：整流电路，用于根据电话线的有效电压产生相应的直流电压; 第一控制器，用于当直流电压低于预定电压时产生第一控制信号; 第二控制器，用于在电话设备操作时检测电话设备的操作状态并产生第二控制信号; 用于在启用时拉低电话线的有效电压的负载增强器; 以及第一开关电路，用于在接收到所述第二控制信号时禁用所述负载增强器，以及在接收到所述第一控制信号而不接收所述第二控制信号的情况下使能所述负载增强器。 还提供监视方法和电话装置。

公开(公告)号：US08363857B2

公开(公告)日：2013-01-29

申请号：US11960713

申请日：2007-12-20

申请人： Xiang-Ping Zhou ,  Gui-Rong Zhou ,  Lin-Kun Ding ,  Shih-Fang Wong

发明人： Xiang-Ping Zhou ,  Gui-Rong Zhou ,  Lin-Kun Ding ,  Shih-Fang Wong

IPC分类号： H04R3/00

CPC分类号： H04R3/007 ,  H04R2430/01 ,  H04R2499/11 ,  H04S7/30

摘要： A portable electronic device includes a player, a speaker, a control circuit, a switch circuit, and a current limiter. The player is for outputting analog audio signals. The speaker is for transforming the analog audio signals into sound. The control circuit is for generating a first control signal when ambient light intensity is lower than a predetermined value. The switch circuit is for turning on and transmitting the analog audio signals to the speaker when receiving the first control signal. The current limiter is for transmitting the analog audio signals to the speaker when the switch circuit turns off, and for limiting a current flowing through the speaker.

摘要翻译： 便携式电子设备包括播放器，扬声器，控制电路，开关电路和限流器。 播放器用于输出模拟音频信号。 扬声器用于将模拟音频信号转换为声音。 控制电路用于当环境光强度低于预定值时产生第一控制信号。 开关电路用于在接收到第一控制信号时接通并将模拟音频信号发送到扬声器。 电流限制器用于在开关电路关断时将模拟音频信号传输到扬声器，并限制流过扬声器的电流。

公开(公告)号：US07626421B2

公开(公告)日：2009-12-01

申请号：US11934091

申请日：2007-11-02

申请人： Lin-Kun Ding ,  Xiang-Ping Zhou ,  Jiang-Feng Shan ,  Shih-Fang Wong

发明人： Lin-Kun Ding ,  Xiang-Ping Zhou ,  Jiang-Feng Shan ,  Shih-Fang Wong

IPC分类号： H03K19/0175

CPC分类号： H03K19/017509

摘要： An interface circuit and an electronic device are used for expanding an output port of a micro processing unit. The interface circuit includes an input port electrically connected to the output port of the micro processing unit for receiving a control signals, and a plurality of output ports selectively driven to control external circuits by inputting different values of the control signal at the input port.

摘要翻译： 接口电路和电子设备用于扩展微处理单元的输出端口。 接口电路包括电连接到微处理单元的输出端口的输入端口，用于接收控制信号;以及多个输出端口，其选择性地被驱动以通过在输入端口输入控制信号的不同值来控制外部电路。

公开(公告)号：US08248276B2

公开(公告)日：2012-08-21

申请号：US12817188

申请日：2010-06-17

申请人： Lin-Kun Ding ,  Xiang-Ping Zhou ,  Ren-Wen Huang ,  Li-Sheng Shu ,  Tsung-Jen Chuang

发明人： Lin-Kun Ding ,  Xiang-Ping Zhou ,  Ren-Wen Huang ,  Li-Sheng Shu ,  Tsung-Jen Chuang

IPC分类号： H03K17/94

CPC分类号： G06F3/023 ,  H03M11/20

摘要： A scanning circuit includes n rows L1˜Ln, 2n columns P1-1˜P1-n and P2-1˜P2-n, and the n rows L1˜Ln and the n columns P1-1˜P1-n cooperatively form a switch matrix comprising n*n switches S1-1˜Sn-n, with ends of the switches in the same row electrically connected to one of n I/O ports K1˜Kn, respectively, the ends of the switches in the same column are electrically connected to ground via one resistor R1-1˜R1-n, respectively, each of resistors R2-1˜R2-n is electronically connected in one column of the columns P2-1˜P2-n, and connected between one of the I/O ports K1˜Kn and ground via one of the resistors R1-1˜R1-n, respectively. A keyboard and a scanning method are also provided.

摘要翻译： 扫描电路包括n行L1〜Ln，2n列P1-1〜P1-n和P2-1〜P2-n，n行L1〜Ln和n列P1-1〜P1-n协同地形成开关 矩阵，其包括n * n个开关S1-1〜Sn-n，同一行中的开关的端部分别电连接到n个I / O端口K1〜Kn中的一个，同一列中的开关的端部是电 通过一个电阻器R1-1〜R1-n分别连接到地，每个电阻器R2-1〜R2-n电连接在列P2-1〜P2-n的一列中，并连接在I / O端口K1〜Kn分别通过电阻R1-1〜R1-n之一接地。 还提供了键盘和扫描方法。