Key scanning circuit
    11.
    发明授权
    Key scanning circuit 有权
    键扫描电路

    公开(公告)号:US08164489B2

    公开(公告)日:2012-04-24

    申请号:US12422527

    申请日:2009-04-13

    IPC分类号: H03M11/00

    CPC分类号: H03M11/20

    摘要: In a key scanning circuit, a key input unit has a parallel connection of a plurality of circuits having a series connection of resistors and switches between a power supply input terminal and a key scanning terminal. The resistors connected in parallel have different resistances. A current mirror has a first terminal connected to the key scanning terminal. A reference current source is connected between a second terminal of the current mirror and the power supply input terminal.

    摘要翻译: 在键扫描电路中,键输入单元具有在电源输入端和键扫描端之间具有电阻和开关的串联连接的多个电路的并联连接。 并联的电阻器具有不同的电阻。 电流反射镜具有连接到键扫描终端的第一端子。 参考电流源连接在电流镜的第二端和电源输入端之间。

    Capacitance sensing apparatus and method, and touch screen apparatus
    12.
    发明授权
    Capacitance sensing apparatus and method, and touch screen apparatus 有权
    电容式感测装置和方法以及触摸屏装置

    公开(公告)号:US08976149B2

    公开(公告)日:2015-03-10

    申请号:US13607919

    申请日:2012-09-10

    IPC分类号: G06F3/045

    CPC分类号: G06F3/044 G06F3/0416

    摘要: There is provided a capacitance sensing apparatus including: a driving circuit unit sequentially applying a driving signal to each of a plurality of first electrodes; a sensing circuit unit including a first integrating circuit detecting a first change in capacitance generated in a plurality of second electrodes by the driving signal and a second integrating circuit connected to another first electrode adjacent to the first electrode to which the driving signal is applied; and an operating unit connected to the sensing circuit unit to determine a touch input, wherein the second integrating circuit detects a second change in capacitance generated due to noise in the another first electrode, and the operating unit determines the touch input based on the first and second changes in capacitance.

    摘要翻译: 提供了一种电容感测装置,包括:驱动电路单元,对多个第一电极中的每一个依次施加驱动信号; 感测电路单元,包括:第一积分电路,其通过驱动信号检测在多个第二电极中产生的电容的第一变化;以及第二积分电路,连接到与施加驱动信号的第一电极相邻的另一第一电极; 以及连接到所述感测电路单元以确定触摸输入的操作单元,其中所述第二积分电路检测由于所述另一第一电极中的噪声而产生的电容的第二变化,并且所述操作单元基于所述第一和第二电极确定所述触摸输入, 二次电容变化。

    KEY SCANNING CIRCUIT
    13.
    发明申请
    KEY SCANNING CIRCUIT 有权
    关键扫描电路

    公开(公告)号:US20100052952A1

    公开(公告)日:2010-03-04

    申请号:US12422527

    申请日:2009-04-13

    IPC分类号: H03M11/00

    CPC分类号: H03M11/20

    摘要: In a key scanning circuit, a key input unit has a parallel connection of a plurality of circuits having a series connection of resistors and switches between a power supply input terminal and a key scanning terminal. The resistors connected in parallel have different resistances. A current mirror has a first terminal connected to the key scanning terminal. A reference current source is connected between a second terminal of the current mirror and the power supply input terminal.

    摘要翻译: 在键扫描电路中,键输入单元具有在电源输入端和键扫描端之间具有电阻和开关的串联连接的多个电路的并联连接。 并联连接的电阻具有不同的电阻。 电流反射镜具有连接到键扫描终端的第一端子。 参考电流源连接在电流镜的第二端和电源输入端之间。

    CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS
    14.
    发明申请
    CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS 有权
    电容感应装置和方法,触摸屏设备

    公开(公告)号:US20140009431A1

    公开(公告)日:2014-01-09

    申请号:US13607919

    申请日:2012-09-10

    IPC分类号: G06F3/044

    CPC分类号: G06F3/044 G06F3/0416

    摘要: There is provided a capacitance sensing apparatus including: a driving circuit unit sequentially applying a driving signal to each of a plurality of first electrodes; a sensing circuit unit including a first integrating circuit detecting a first change in capacitance generated in a plurality of second electrodes by the driving signal and a second integrating circuit connected to another first electrode adjacent to the first electrode to which the driving signal is applied; and an operating unit connected to the sensing circuit unit to determine a touch input, wherein the second integrating circuit detects a second change in capacitance generated due to noise in the another first electrode, and the operating unit determines the touch input based on the first and second changes in capacitance.

    摘要翻译: 提供了一种电容感测装置,包括:驱动电路单元,对多个第一电极中的每一个依次施加驱动信号; 感测电路单元,包括:第一积分电路,其通过驱动信号检测在多个第二电极中产生的电容的第一变化;以及第二积分电路,连接到与施加驱动信号的第一电极相邻的另一第一电极; 以及连接到所述感测电路单元以确定触摸输入的操作单元,其中所述第二积分电路检测由于所述另一第一电极中的噪声而产生的电容的第二变化,并且所述操作单元基于所述第一和第二电极确定所述触摸输入, 二次电容变化。