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公开(公告)号：US20110122089A1
公开(公告)日：2011-05-26
申请号：US12948180
申请日：2010-11-17
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0418
摘要： This invention offers a signal processing circuit of an electrostatic capacity type touch panel which is capable of switching between a differential input mode and a single input mode and has an extended adjustable range of an offset in the single input mode. The signal processing circuit of this invention includes a first sensor circuit of a differential input type, a second sensor circuit of a single input type, a third and fourth electrostatic capacitors that are variable capacitors for calibration to adjust the offset in an output voltage of the first sensor circuit, and a switching control circuit to control so as to put in operation one of the first and second sensor circuits. The switching control circuit also controls so that the third and fourth electrostatic capacitors for calibration are connected in parallel to each other when the second sensor circuit is put in operation.
摘要翻译： 本发明提供一种静电电容式触摸面板的信号处理电路，其能够在差分输入模式和单一输入模式之间切换，并且在单个输入模式中具有扩展的偏移调整范围。 本发明的信号处理电路包括差分输入型的第一传感器电路，单输入型的第二传感器电路，第三和第四静电电容器，其是用于校准的可变电容器，用于调整输出电压的偏移 第一传感器电路和切换控制电路，以控制第一和第二传感器电路中的一个。 开关控制电路也进行控制，使得第三传感器电路和第四静电电容器在第二传感器电路投入运行时彼此并联。
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公开(公告)号：US08525810B2
公开(公告)日：2013-09-03
申请号：US12652334
申请日：2010-01-05
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0416
摘要： There is offered a signal processing device of touch panel using an electrostatic capacity, which realizes improvement in noise tolerance and linear detection. An excitation pad, a first touch pad and a second touch pad are disposed on a substrate in a way that the excitation pad is interposed between the first and second touch pads. On the other hand, an alternating current power supply that provides the excitation pad with an alternating voltage through a wiring is provided on a sensor IC side of the signal processing device of touch panel. Also, there is provided an electric charge amplifier. The first touch pad is connected to a non-inverting input terminal (+) of the electric charge amplifier through an wiring, while the second touch pad is connected to an inverting input terminal (−) of the electric charge amplifier through a wiring.
摘要翻译： 提供了使用静电电容的触摸面板的信号处理装置，实现了噪声容限和线性检测的改善。 励磁焊盘，第一触摸板和第二触摸板以激励焊盘介于第一和第二触摸板之间的方式设置在基板上。 另一方面，在触摸面板的信号处理装置的传感器IC侧设置有通过配线向激励焊盘提供交流电压的交流电源。 另外，还提供了一种电荷放大器。 第一触摸板通过布线连接到电荷放大器的非反相输入端（+），而第二触摸板通过布线连接到电荷放大器的反相输入端（ - ）。
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公开(公告)号：US07652472B2
公开(公告)日：2010-01-26
申请号：US11531198
申请日：2006-09-12
IPC分类号： G01R33/04
CPC分类号： G01R33/04
摘要： A signal detection circuit of a magnetic sensor includes a differential amplifier to which an output voltage of a detecting coil of the magnetic sensor is applied; a comparator to which the output of the differential amplifier is input, the comparator outputting a digital signal having one logical value during a time period between two adjacent spike voltages included in the output voltage; and a counter that counts the number of pulses of a clock in a period when the output of the comparator has one logical value.
摘要翻译： 磁传感器的信号检测电路包括施加有磁传感器的检测线圈的输出电压的差动放大器; 输入差分放大器的输出的比较器，所述比较器在包括在所述输出电压中的两个相邻尖峰电压之间的时间段期间输出具有一个逻辑值的数字信号; 以及在比较器的输出具有一个逻辑值的周期中对计数脉冲数的计数器。
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公开(公告)号：US08878812B2
公开(公告)日：2014-11-04
申请号：US12837029
申请日：2010-07-15
IPC分类号： G06F3/045 , G06F3/044 , G06F3/0354
CPC分类号： G06F3/044 , G06F3/03547
摘要： There is offered a signal processing circuit for an electrostatic capacity type touch sensor capable of detecting a larger number of locations with a smaller number of touch pads as well as improving noise immunity. A selection circuit selects either a signal from a combination of the first and second kinds of touch pads outputted through the first and second output terminals CO1 and CO2 in a touch panel or a signal from a combination of the third and fourth kinds of touch pads outputted through the third and fourth output terminals CO3 and CO4. An electric charge amplifier outputs first and second output voltages V1 and V2 corresponding to a difference between capacitances of the touch pads on the touch panel based on the signals from the selected combination. A delta sigma type A/D converter converts the first and second output voltages V1 and V2 into digital signals.
摘要翻译： 提供了一种用于静电容量型触摸传感器的信号处理电路，其能够用较少数量的触摸板检测更大数量的位置以及提高抗噪声性。 选择电路选择来自触摸面板中通过第一和第二输出端子CO1和CO 2输出的第一和第二种触摸板的组合的信号或来自第三和第四种触摸板的组合的信号输出 通过第三和第四输出端子CO3和CO4。 电荷放大器基于来自所选择的组合的信号输出与触摸面板上的触摸板的电容之差相对应的第一和第二输出电压V1和V2。 Δ西格玛型A / D转换器将第一和第二输出电压V1和V2转换成数字信号。
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公开(公告)号：US20070057669A1
公开(公告)日：2007-03-15
申请号：US11531020
申请日：2006-09-12
IPC分类号： G01R33/04
CPC分类号： G01R33/04
摘要： An exciting coil drive circuit of a magnetic sensor comprises a D/A converter that receives input of digital data for detecting a magnetic field; a first amplifier that outputs a drive signal P applied to one end of an exciting coil of the magnetic sensor based on the output signal of the D/A converter; and a second amplifier that outputs a drive signal N applied to the other end of the exciting coil based on the output signal of the D/A converter, the drive signal N being an inversion signal of the drive signal P, the drive signal N intersecting with the drive signal P twice or more.
摘要翻译： 磁传感器的励磁线圈驱动电路包括D / A转换器，其接收用于检测磁场的数字数据的输入; 第一放大器，其基于D / A转换器的输出信号输出施加到磁传感器的励磁线圈的一端的驱动信号P. 以及第二放大器，其基于D / A转换器的输出信号输出施加到励磁线圈的另一端的驱动信号N，驱动信号N是驱动信号P的反相信号，驱动信号N相交 驱动信号P为两次或更多次。
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公开(公告)号：US07355398B2
公开(公告)日：2008-04-08
申请号：US11531020
申请日：2006-09-12
IPC分类号： G01R33/04
CPC分类号： G01R33/04
摘要： An exciting coil drive circuit of a magnetic sensor comprises a D/A converter that receives input of digital data for detecting a magnetic field; a first amplifier that outputs a drive signal P applied to one end of an exciting coil of the magnetic sensor based on the output signal of the D/A converter; and a second amplifier that outputs a drive signal N applied to the other end of the exciting coil based on the output signal of the D/A converter, the drive signal N being an inversion signal of the drive signal P, the drive signal N intersecting with the drive signal P twice or more.
摘要翻译： 磁传感器的励磁线圈驱动电路包括D / A转换器，其接收用于检测磁场的数字数据的输入; 第一放大器，其基于D / A转换器的输出信号输出施加到磁传感器的励磁线圈的一端的驱动信号P. 以及第二放大器，其基于D / A转换器的输出信号输出施加到励磁线圈的另一端的驱动信号N，驱动信号N是驱动信号P的反相信号，驱动信号N相交 驱动信号P为两次或更多次。
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7.发明申请Reference voltage generating circuit and reference current generating circuit 审中-公开参考电压发生电路和参考电流产生电路公开(公告)号：US20060202745A1
公开(公告)日：2006-09-14
申请号：US11366745
申请日：2006-03-03
IPC分类号： G05F1/10
CPC分类号： G05F3/24
摘要： In a reference current generating circuit, an output voltage of a regulator is divided by a resistance dividing circuit consisting of resistors to generate a micro reference voltage. It is possible to connect and disconnect the resistance dividing circuit using a switch consisting of a transistor. A switch consisting of a transistor is provided between a connection point of the resistors and a reference voltage output terminal. A capacitor is connected to the reference voltage output terminal. The transistors are periodically subjected to ON/OFF control according to a clock pulse outputted by a control circuit. The capacitor is charged to a reference voltage when the transistors are on and keeps the reference voltage output terminal at the reference voltage when the transistors are off. A current mirror circuit uses the micro reference voltage to generate a micro reference current while suppressing an increase in a resistance of a reference resistor that determines an output current. With this constitution, it is possible to reduce an area of the reference resistor in the reference current generating circuit constituted as a semiconductor integrated circuit.
摘要翻译： 在参考电流产生电路中，调节器的输出电压被由电阻组成的电阻分压电路分压，以产生微参考电压。 可以使用由晶体管组成的开关来连接和断开电阻分割电路。 在电阻的连接点和参考电压输出端子之间设置由晶体管构成的开关。 电容器连接到参考电压输出端子。 晶体管根据由控制电路输出的时钟脉冲周期性地进行ON / OFF控制。 当晶体管导通时，电容器被充电到参考电压，并且当晶体管关断时，将参考电压输出端子保持在参考电压。 电流镜电路使用微参考电压来产生微参考电流，同时抑制确定输出电流的参考电阻器的电阻的增加。 利用这种结构，可以减小构成半导体集成电路的基准电流发生电路中的基准电阻的面积。
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8.发明授权Capcitive touch panel with simultaneously enabled X- and Y-direction sensor circuits wherein in each sensor circuit the drive line is interdigitated with a plurality of sense lines 有权具有同时启用的X和Y方向传感器电路的电容式触摸面板，其中在每个传感器电路中，驱动线与多条感测线相互交错公开(公告)号：US09262017B2
公开(公告)日：2016-02-16
申请号：US12794281
申请日：2010-06-04
CPC分类号： G06F3/044 , G06F3/0416
摘要： There is offered a signal processing circuit of the electrostatic capacity type touch panel which can eliminate duplication of components to reduce a cost of the components. A touch panel 51 is formed on a glass substrate 200. Sensor circuits 50A and 50B are arrayed in a Y direction, and sensor circuits 50C and 50D are arrayed in an X direction on the periphery of the touch pane 51. Serial clock terminals SCL of the sensor circuits 50A-50D are connected to a serial clock line 53 all together, while serial data terminals SDA are connected to a serial data line 54 all together. A microcomputer 52 is disposed on a PCB substrate outside the glass substrate 200. Data communication can be performed between the microcomputer 52 and the sensor circuits 50A-50D through the serial clock line 53 and the serial data line 54.
摘要翻译： 提供了一种静电电容型触摸面板的信号处理电路，可以消除组件的重复，从而降低组件的成本。 触摸面板51形成在玻璃基板200上。传感器电路50A和50B沿Y方向排列，传感器电路50C和50D沿触摸窗格51的周边上的X方向排列。串行时钟端子SCL 传感器电路50A-50D一起连接到串行时钟线53，而串行数据终端SDA一起连接到串行数据线54。 微计算机52设置在玻璃基板200外部的PCB基板上。数据通信可以通过串行时钟线53和串行数据线54在微计算机52和传感器电路50A-50D之间进行。
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9.发明授权公开(公告)号：US08619057B2
公开(公告)日：2013-12-31
申请号：US12794349
申请日：2010-06-04
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0416
摘要： The invention realizes certainly detecting two or more positions on a touch panel that are touched at the same time. A drive circuit selects one from X lines, and supplies an alternating drive voltage to the selected line. A multiplexer selects a first sense line and a second sense line from Y lines that extend to cross the X lines. A charge amplifier outputs an output voltage corresponding to a difference between a first capacitance between the first sense line and the X line selected by the drive circuit and a second capacitance between the second sense line and the X line selected by the drive circuit. A touch position is then detected based on the output voltage of the charge amplifier.
摘要翻译： 本发明实现了同时触摸的触摸面板上的两个以上的位置。 驱动电路从X线选择一个，并向所选择的线提供交替的驱动电压。 复用器从Y线延伸以跨越X线选择第一感测线和第二感测线。 电荷放大器输出对应于由驱动电路选择的第一感测线和X线之间的第一电容之间的差的输出电压和由驱动电路选择的第二感测线和X线之间的第二电容。 然后基于电荷放大器的输出电压检测触摸位置。
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10.发明授权Signal processing circuit for a capacitive touch panel capable of switching between a differential-input sensor circuit and a single-input sensor circuit 有权用于能够在差分输入传感器电路和单输入传感器电路之间切换的电容式触摸面板的信号处理电路公开(公告)号：US08441462B2
公开(公告)日：2013-05-14
申请号：US12948180
申请日：2010-11-17
CPC分类号： G06F3/044 , G06F3/0418
摘要： This invention offers a signal processing circuit of an electrostatic capacity type touch panel which is capable of switching between a differential input mode and a single input mode and has an extended adjustable range of an offset in the single input mode. The signal processing circuit of this invention includes a first sensor circuit of a differential input type, a second sensor circuit of a single input type, a third and fourth electrostatic capacitors that are variable capacitors for calibration to adjust the offset in an output voltage of the first sensor circuit, and a switching control circuit to control so as to put in operation one of the first and second sensor circuits. The switching control circuit also controls so that the third and fourth electrostatic capacitors for calibration are connected in parallel to each other when the second sensor circuit is put in operation.
摘要翻译： 本发明提供一种静电电容式触摸面板的信号处理电路，其能够在差分输入模式和单一输入模式之间切换，并且在单个输入模式中具有扩展的偏移调整范围。 本发明的信号处理电路包括差分输入型的第一传感器电路，单输入型的第二传感器电路，第三和第四静电电容器，其是用于校准的可变电容器，用于调整输出电压的偏移 第一传感器电路和切换控制电路，以控制第一和第二传感器电路中的一个。 开关控制电路也进行控制，使得第三传感器电路和第四静电电容器在第二传感器电路投入运行时彼此并联。
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