CN102124429A - 电容性触摸板和结合了相同触摸板的玩具 - Google Patents
电容性触摸板和结合了相同触摸板的玩具 Download PDFInfo
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Abstract
提供了一种电容性触摸板组件、包括电容性触摸板组件和集成读卡器的玩具，以及用于检测与电容性触摸表面的接触的方法。电容性触摸表面具有的电容可依据电容性触摸表面是否被例如人手指的物体接触而改变。电容性触摸表面的电压可在预定数目的循环时间间隔中的每个间隔期间被改变。电容性触摸表面的电容将决定在每个时间间隔内将电容性触摸表面的电压改变到阈值电压所需要的时间量。在预定数目的时间间隔数内电容性触摸表面的电压达到阈值电压所需的总时间量可用于判断电容性触摸表面是否正在被触摸。
Description
相关申请的交叉引用
依据35U.S.C.§119(e)，本申请要求于2008年6月20日提交的第61/074,554号，以及于2008年6月24号提交的第61/083,395号，标题均为“TOY WITH CAPACITIVE TOUCHPAD AND INTEGRAL CARD READER”的美国临时专利申请的优先权，在此结合其公开内容作为参考。
技术领域
本公开内容涉及电容性触摸板组件，以及类似于玩具并具有例如输入电容性触摸板组件和集成读卡器的部件的计算机外接装置。该触摸板可使用电容性传感器，并且可利用压电装置来提供触觉反馈。在某些实施例中，可利用有限的姿态识别提高游戏的价值。
背景技术
电容性传感器的示例在第US4039940、US4272916、US4355300、US4595913、US5413518、US5650597、US6661239、US6834251、US6940291号，以及公开号第US20040219501号美国专利中揭示。压电装置的示例在第US4334280、US4629846和US6466036号美国专利中揭示。姿态识别的示例在第US20060205502、US20060089197和US20060252494号美国专利公开中揭示。读卡器的示例在第US4884974、US5334022、US7224934、US7387560号美国专利中揭示。在此结合以上提及的所有专利和出版物的公开内容作为参考。
发明内容
提供了电容性触摸板组件、包括电容性触摸板组件并且在某些情况下还包括集成读卡器的玩具，以及用于检测与电容性触摸表面的接触的方法。电容性触摸表面的电容可根据是否例如人手指的物体与该表面正接触而改变。电容性触摸表面的电压在预定数目的循环间隔中的每个间隔期间可被改变。电容性触摸表面的电容将决定在每个间隔内将电容性触摸表面的电压改变到阈值电压所需要的时间量。在预定数目的间隔内电容性触摸表面的电压达到阈值电压所需的总时间量，可用于判断在那些预定数目的间隔期间电容性触摸表面是否正在被触摸。
附图说明
图1示出了依据本公开的一个实施例，依据本公开的附接到计算机的玩具；
图2是依据本公开的一个实施例的，包括具有多个电容性触摸表面的电容性触摸板组件的玩具的正视图；
图3示出了用于实现在此揭示的一个或多个实施例的示例逻辑电路；
图4是依据本公开的一个实施例的，类似于图2中示出的玩具的正视图，该玩具具有覆盖多个电容性触摸表面的游戏卡；
图5是依据本公开的一个实施例的，与图1-图4中示出的那些玩具类似的玩具的侧视图；
图6和图7分别是依据本公开的一个实施例的，可与诸如图1-图5中所示的类似设备一起使用的示例游戏卡的正视图和后视图；
图8示出了依据本公开的一个实施例的，用于检测是否电容性触摸表面正被触摸的示例电路逻辑；
图9示出了两个曲线图，其示出了在结合了图8的电路逻辑的电容性触摸板组件中，被触摸和未被触摸的电容性触摸表面之间作为时间函数的电容的差异；
图10示出了依据本公开的一个实施例的，用于检测是否电容性触摸表面正被触摸的备选电路逻辑；
图11示出了两个曲线图，其示出了在结合了图10的电路逻辑的电容性触摸板组件中，被触摸和未被触摸的电容性触摸表面之间作为时间函数的电容的差异。
具体实施方式
参考附图，其中相同的数字指示相同的元件，在图1中示出了包括键盘12以及显示图像16的监视器14的计算装置10。计算装置10还可包括任意数量的未示出的其它部件，例如鼠标、打印机和类似部件。外部玩具20可经由接口22被运转地耦合到计算装置10。接口22可以是有线(例如USB或串口)或无线(例如蓝牙、RFID、红外)的连接。
如图2可见，外接的玩具20可包括具有集成读卡器26和表面28的外壳24，该表面28适用于接纳一个或多个便携的游戏卡30(见图1、图3和图5-图6)。图3示出了可在例如图1和图2所示那样的外接玩具20中实现的示例逻辑电路。集成读卡器26在此被示为一系列的光学拾波器。外接玩具20可还包括CPU29，也称为控制器，该控制器可配置成对外接玩具20的各种部件的交互进行控制。附加部件将在下面被进一步描述。
如图4所示，用户可以将一个或多个便携式游戏卡30安装到外接玩具20的表面28上。集成读卡器26可读取游戏卡30的表面(例如游戏卡30的背面上，如图6可见)上的标记32，以获得与游戏卡30有关的识别信息。CPU29可配置成从集成读卡器26接收游戏卡识别信息，并通过接口22将指令传达给计算装置10，以提供与所接收的识别信息有关的输出。
在某些实施例中，关于游戏卡30的识别信息可包括与卡30上所示的角色34有关的信息。将游戏卡30放置在表面28上可致使CPU29命令计算装置10在计算机监视器14上输出看起来类似于角色34或与角色34有关的图像16(见图1)。用户可以通过操纵外接玩具20上的控制器，致使CPU29经由接口22向计算装置10发送控制信号，来用外接玩具20控制监视器14上的图像16。
尽管可实现许多种从游戏卡30读取数据的方法(例如USB、串口、存储卡、条形码(barcode)、RFID)，在示例性实施例中，集成读卡器26的每个传感器被配置成光学读取卡30上的标记32的单个部分，以确定关于卡30的信息。例如，在图2和图3中所示的示例集成读卡器26包括五个传感器，代表五个二进制数字，从而允许31种数列(permutation)或离散的卡标识。尽管图2中显示最低有效位在右边，这并非意图进行限制，并且应该明白的是集成读卡器26中的传感器可以排列成任意顺序。
图6和7分别示出了与图1-5中示出的玩具20兼容的示例游戏卡30的正面和背面。图7中可见的在卡30背面上的标记32包括五个单独的值指示符。每个值指示符可适用于被集成读卡器26的单个传感器读取。每个值指示符可能够传达一条或多条信息。在该示例中，标记32中的最高有效位被布置在相对于集成读卡器26最高有效位的相反的位置，使得当卡30的背面面向集成读卡器26时，这两个最高有效位将对齐。
正如在图2和图3中所见，外接的玩具20可包括附加特征，例如照相机36、照相机控制按钮37、其它输入控制38和四路方向性板39。在某些实施例中，照相机36包括使照片能被拍摄的图像传感器和透镜。备选地，照相机36可以只是个模型，但照相机控制按钮37可用于触发计算装置10上的模拟照片的显示。四路方向性板39可与US4687200中的描述类似，在此出于所有目的结合该出版物的公开内容作为参考。
参考图2，外接玩具20可包括例如电容性触摸板组件40的控制器，该电容性触摸板组件40包括设置在外接玩具20的外壳24上，通常在表面28上的一个或多个电容性触摸板/触摸表面42。在某些实施例中，每个电容性触摸表面42被覆盖以装饰性绝缘材料。用例如人手指的物体接触电容性触摸表面42会改变电容性触摸表面42的有效电容。对电容的这种改变，以及由此电容性触摸表面42是否正在被触摸，可通过更改电容性触摸表面42的电压并测量电容性触摸表面42达到阈值电压所需要的时间量来检测。
游戏卡30可由选择出的材料构成，该材料被选择成使得卡30在表面28上的放置将不干扰电容性触摸板组件40的工作。例如，电容性触摸表面42可被配置成通过游戏卡30来检测触摸。
卡30还可用于改善电容性触摸板组件40的可用性。例如，卡30可包括一个或多个控制区域指示符35，这些指示符35指示卡30的将覆盖特定电容性触摸表面42的特定部分。在下面的电容性触摸表面42可致使计算装置10以与特定控制区域指示符35上所示物有关的方式更改输出图像16。例如，在图6中，卡30包括表示衣服的控制区域指示符35。当卡30被安装在玩具20上时，CPU29可被配置成当在这个控制区域指示符35之下的电容性触摸表面42被触摸时，更改角色输出16的衣服。
图8说明了用于监测电容性触摸表面42的电容，从而监视电容性触摸表面42是否被触摸的示例电路逻辑。反复性地，电容性触摸表面42被充电，至少直到其电压达到预定阈值为止，并且在每种情况下达到预定充电阈值需要的时间被测量。电容性触摸表面42被连接到电源Vcc。脉冲发生器或时钟44向逻辑-控制开关46生成脉冲，并在多种情况下生成定时脉冲，以定义循环间隔。该脉冲还被提供给计时器48。逻辑-控制开关46可以是微片、ASIC或其它类似的电路，并且可被配置成打开和关闭电容性触摸表面42和接地50之间的连接，以更改电容性触摸表面42的电压。
与接地50的连接使电容性触摸表面42迅速放电，尤其是在电容性触摸表面42和接地50之间存在的阻抗从几乎没有到完全没有时。然而，正如将在下面描述的其它实施例中可见的，在电容性触摸表面42和接地50之间可包括电阻，以使电容性触摸表面42的放电较为缓慢。
峰值电平检测器52被耦合到电容性触摸表面42，并被配置成检测和向计时器48指示何时电容性触摸表面42的电压达到阈值电压(图9中的虚线A指示)。因此，计时器48可被配置成记录或测量将电容性触摸表面42充电到阈值电压所需要的时间。计时器48可基于脉冲发生器44的输出被启动(例如在每个间隔T的开始处，间隔T典型地为时间间隔)，并根据峰值电平检测器52的指令停止(即，当达到阈值电压时)。当计时器48停止时，可将测量时间存储在寄存器54中，并且测量时间可被添加到累加器56中包含的记录时间的总和中。
计时器48可在预定数目的间隔期间，或换言之，在一个采样期间测量时间。周期计数器58可跟踪间隔，以便控制采样尺寸。例如，如果采样尺寸为X个间隔T，周期计数器58递增X次，在此期间时间累加器56累加X个来自计时器48的测得的充电时间。一旦X个周期过去，采样完成。
一旦采样完成，累加器56中的总数值可被存储，并且累加器56可被重置为零。通过使用整体在59处示出的控制电路实现逻辑，于是可将来自累加器56的总数值与预定值或阈值Y比较。如果在阈值Y以上(或在相同情况下大于或等于阈值Y)，则可判定为在路径A中，即在采样期间电容性触摸表面42正在被触摸。如果所存储的累加器值在阈值Y以下，则可判定为在路径B中，即在采样期间电容性触摸表面42未被触摸。
在图9中以图形绘示了图8中所示的电路逻辑的示例结果。在标注有“TOUCH”的顶部图形中示出电容性触摸表面42正在被触摸的采样。因为电容性触摸表面42正在被触摸，其电容较高。因此，将电容性触摸表面42充电到由虚线A指示的阈值电压可能需要更多的间隔，例如2/3个间隔T。
在标注有“NO TOUCH”的图9底部图形中示出电容性触摸表面42未被触摸的示例。因为未被触摸时电容性触摸表面42的电容较低，将电容性触摸表面42充电到由虚线A指示的阈值电压可能需要较少的间隔，例如只有1/3个间隔T。
继续参考图8的逻辑并还参考图9，对于每个间隔T，当电容性触摸表面42正在被触摸时，2/3被添加到累加器56，而当电容性触摸表面42未被触摸时，1/3被添加到累加器56。假设采样尺寸为9个间隔T(在图9中只示出7个间隔)，如果累加器56中的总和大于或等于预定值(例如6)，则电容性触摸表面42可被看作在该采样中被触摸。在这样的情况下，实现在59处整体指示的逻辑的控制电路，该控制电路可包括在此描述的部件中的一个或多个，可产生指示电容性触摸表面42被触摸的信号。同样地，如果累加器56中的总和小于预定值(例如小于6)，则电容性触摸表面42可被看作在该采样中未被触摸，并且控制电路可产生指示未被触摸的信号。
在每个间隔T的结尾和/或下一个间隔T+1的开始，紧接在被再次充电之前，电容性触摸表面42的充电可停止并且电容性触摸表面42可被连接到接地50以对其电压进行放电。这在电容性触摸表面42的充电之间产生时间间断，使得采样可通过使用示波器来轻松地观察。这还使得对电容性触摸表面42是否正在被触摸的判定完全独立于信号的任何频率，因为来自时钟44的循环间隔确保了恒定的频率。
图10中绘示了备选的电路逻辑。除了代替测量将电容性触摸表面42充电到阈值电压所需的时间以外，该实施例类似于图8中所示的实施例，该实施例测量将电容性触摸表面42放电到阈值电压所需的时间。
在每个间隔T的开始和紧接在电容性触摸表面42正被放电之前，计时器48被设置成零，并且逻辑-控制开关46将电容性触摸表面42连接到电源Vcc上持续预定时间量或直至达到预定的充电(在图11中标注为B)。一旦电容性触摸表面42被充电，逻辑-控制开关46将电容性触摸表面42从电源Vcc上断开，使得电容性触摸板42的电压通过放电电阻器被逐步放电。
在图10中，零电平检测器60被连接到电容性触摸表面42，以检测电容性触摸表面42的电压何时下降到零。这种情况一旦发生，零电平检测器60命令计时器48停止。因此，通过计时器48测量的时间就是需要对电容性触摸表面42进行充电所需的时间加上将电容性触摸表面42的电压放电到零所需的时间。正如上面的情况，在采样中所测量时间的总数被累加到累加器56中。剩余逻辑可与图8中示出的一致。尽管在图10中示出了零电平检测器60，指示预定阈值的值为零，应该明白的是也可选择其它非零的预定阈值的值。
在图11中以图形绘示了图10中所示的逻辑电路的示例结果。在图11的标注有“TOUCH”的顶部图形中示出了电容性触摸表面42正在被触摸的采样。由于电容性触摸表面42正在被触摸，其电容较高，这意味着其需要更多的时间来放电。在这种情况下，需要1/2的间隔T才能将电容性触摸表面42放电到零。在图11的标注有“NO TOUCH”的底部图形中，电容性触摸表面42未被触摸，使得其电容较低，并且减少了其放电所需的时间。在这种情况下，需要1/4的间隔T才能将电容性触摸表面42放电到零。
假设采样尺寸为5个间隔T，在累加器56中累加的时间量可与阈值Y＝2.5相比较。如果累加时间大于或等于2.5(1/2×5＝2.5)，则可判定电容性触摸表面42正在被触摸。在这种情况下，实现在59处指示的逻辑的控制电路可产生指示电容性触摸表面42正在被触摸的信号。如果累加时间小于2.5(1/4×5＝1.25)，则可判定电容性触摸表面42未被触摸，并且控制电路可产生指示未被触摸的信号。应理解，累加时间与之进行比较的阈值可以被向上或向下调节，分别会减少或增加电容性触摸表面42的灵敏度。
在某些实施例中，从外接玩具20经由接口22传达给计算装置10的信号可采用一个或多个通信或电子协议。例如，通过使用外接玩具20上的电容性触摸板组件40或其它控制器采取的行动可以例如USB的格式被传输到计算装置10。在某些实施例中，计算装置10上执行的软件甚至可以在没有玩具20(玩具20被丢失或损坏)的情况下通过使用另一个USB输入装置被操作。以下列表包括一组示例性的USB键击(keystroke)，这些USB键击可与玩具20上的不同电容性触摸板相对应：
Up＝Alt_Up Arrow＝E2h OR E6h AND 52h Usage ID
Dn＝Alt_Down Arrow＝E2h OR E6h AND 51h Usage ID
Rt＝Alt_Right Arrow＝E2h OR E6h AND 4Fh Usage ID
Lt＝Alt_Left Arrow＝E2h OR E6h AND 50h Usage ID
Camera＝Alt_Spacebar＝E2h OR E6h AND 2Ch Usage ID
Yes＝Alt_Enter＝E2h OR E6h AND 28h Usage ID
No＝Alt_Backspace＝E2h OR E6h AND 2Ah Usage ID
Sw01＝Alt_Q＝E2h OR E6h AND 14h Usage ID
Sw02＝Alt_W＝E2h OR E6h AND 1Ah Usage ID
Sw03＝Alt_E＝E2h OR E6h AND 08h Usage ID
Sw04＝Alt_R＝E2h OR E6h AND 15h Usage ID
Sw05＝Alt_T＝E2h OR E6h AND 17h Usage ID
Sw06＝Alt_Y＝E2h OR E6h AND 1Ch Usage ID
Sw07＝Alt_A＝E2h OR E6h AND 04h Usage ID
Sw08＝Alt_S＝E2h OR E6h AND 16h Usage ID
Sw09＝Alt_D＝E2h OR E6h AND 07h Usage ID
Sw10＝Alt_F＝E2h OR E6h AND 09h Usage ID
Sw11＝Alt_G＝E2h OR E6h AND 0Ah Usage ID
Sw12＝Alt_Z＝E2h OR E6h AND 1Dh Usage ID
Card01＝Alt_1＝E2h OR E6h AND 1Eh Usage ID
Card02＝Alt_2＝E2h OR E6h AND 1Fh Usage ID
Card03＝Alt_3＝E2h OR E6h AND 20h Usage ID
Card04＝Alt_4＝E2h OR E6h AND 21h Usage ID
Card05＝Alt_5＝E2h OR E6h AND 22h Usage ID
Card06＝Alt_6＝E2h OR E6h AND 23h Usage ID
Card07＝Alt_7＝E2h OR E6h AND 24h Usage ID
Card08＝Alt_8＝E2h OR E6h AND 25h Usage ID
Card09＝Alt_9＝E2h OR E6h AND 26h Usage ID
Card10＝Alt_0＝E2h OR E6h AND 27h Usage ID
Card11＝Alt_U＝E2h OR E6h AND 18h Usage ID
Card12＝Alt_P＝E2h OR E6h AND 13h Usage ID
Card13＝Alt_H＝E2h OR E6h AND 0Bh Usage ID
Card14＝Alt_J＝E2h OR E6h AND 0Dh Usage ID
Card15＝Alt_K＝E2h OR E6h AND 0Eh Usage ID
Card16＝Alt_L＝E2h OR E6h AND 0Fh Usage ID
Card17＝Alt_N＝E2h OR E6h AND 11h Usage ID
Card18＝Alt_M＝E2h OR E6h AND 10h Usage ID
Card19＝Alt_＜＝E2h OR E6h AND 36h Usage ID
Card20＝Alt_＞＝E2h OR E6h AND 37h Usage ID
虽然已经特定地示出并描述了玩具和关联的计算机系统以及使用的方法的实施例，但是在此可做出许多改变。这种揭示可包括一个或多个独立的或相互依赖的实施例，这些实施例指向特征、功能、元件和/或性质的各种组合。特征、功能、元件和/或性质的其它组合和分组合可在本申请或相关申请中稍后提出。这样的变化，无论指向不同组合还是指向相同组合，无论范围不同、更宽、更窄还是相等，都被认为是被包含在本揭示的主题以内。因此，前述实施例是说明性的，并且没有单个的特征或元件、或其组合对于可在本申请或以后的申请中被要求保护的所有可能组合是必要的。描写中叙述“一个”或“第一”元件或其等价物的地方，这样的描写包括一个或多个这样的元件，既不要求也不排除两个或更多这样的元件。进一步的，例如第一、第二或第三这样的用于识别元件的有顺序的标记用于在元件之间进行区分，并不指示需要这些数量的或有限数量的这种元件，并且不指示这样的元件有特定位置或顺序，除非另外有特别说明。
Claims (20)
1.一种电容性触摸板组件，包括：
电容性触摸表面；
脉冲发生器，被配置成提供定义循环间隔的脉冲；
逻辑-控制开关，用于在每个间隔期间改变所述电容性触摸表面的电压，直至所述电容性触摸表面的电压达到阈值电压；
计时器，被配置成测量所述电容性触摸表面的电压在每个间隔中达到所述阈值电压需要的时间；
累加器，被配置成在预定数目的间隔期间累加由所述计时器测量的时间；以及
控制电路，被配置成在累加时间大于预定值时产生指示所述电容性触摸表面正在被触摸的信号。
2.如权利要求1所述的电容性触摸板组件，其中改变所述电容性触摸表面的电压包括对所述电容性触摸表面进行充电至少直至所述电容性触摸表面的电压升高到所述阈值电压。
3.如权利要求2所述的电容性触摸板组件，其中改变所述电容性触摸表面的电压进一步包括在每个间隔开始处紧接在对所述电容性触摸表面进行充电之前对所述电容性触摸表面进行放电。
4.如权利要求1所述的电容性触摸板组件，其中改变所述电容性触摸表面的电压包括对所述电容性触摸表面进行放电，至少直至所述电容性触摸表面的电压下降到所述阈值电压。
5.如权利要求4所述的电容性触摸板组件，其中所述阈值电压为零。
6.如权利要求4所述的电容性触摸板组件，进一步包括电阻器，通过该电阻器所述电容性触摸表面的电压被逐步地放电。
7.如权利要求4所述的电容性触摸板组件，其中改变所述电容性触摸表面的电压进一步包括在每个间隔开始处紧接在对所述电容性触摸表面进行放电之前对所述电容性触摸表面进行充电。
8.一种计算机外接玩具，其结合了如权利要求1所述的电容性触摸板组件，并且进一步包括：
外壳，具有适用于接纳游戏卡的表面；
读取器，被配置成从放置在所述表面上的游戏卡读取关于该游戏卡的识别信息；
接口，其在玩具和计算装置之间；以及
控制器，被配置成：
从所述读取器接收关于放置在所述表面上的游戏卡的识别信息；并且
通过所述接口将指令传送给所述计算装置，以致使所述计算装置提供关于所接收的识别信息的输出；
其中所述电容性触摸表面形成在适用于接纳游戏卡的表面上，并且所述电容性触摸表面被配置成通过所述游戏卡检测触摸。
9.一种检测与电容性触摸表面的接触的方法，包括：
提供脉冲以定义循环间隔；
在每个间隔期间改变所述电容性触摸表面的电压直至所述电容性触摸表面的电压达到阈值电压；
测量在每个间隔期间所述电容性触摸表面的电压达到所述阈值电压所需要的时间；
累加在预定数目的间隔期间测量的时间；并且
在累加时间大于预定值时，指示所述电容性触摸表面正在被接触。
10.如权利要求9所述的方法，其中改变所述电容性接触表面的电压包括对所述电容性接触表面进行充电，至少直至所述电容性接触表面的电压上升到所述阈值电压。
11.如权利要求10所述的方法，其中改变所述电容性触摸表面的电压进一步包括在每个间隔开始处紧接在对所述电容性触摸表面进行充电之前对所述电容性触摸表面进行放电。
12.如权利要求9所述的方法，其中改变所述电容性触摸表面的电压包括对所述电容性触摸表面进行放电，至少直至所述电容性触摸表面的电压下降到所述阈值电压。
13.如权利要求12所述的方法，其中所述阈值电压为零。
14.如权利要求12所述的方法，其中对所述电容性触摸表面进行放电包括通过电阻器对所述电容性触摸表面逐步地放电。
15.如权利要求12所述的方法，其中改变所述电容性触摸表面的电压进一步包括在每个间隔开始处紧接在对所述电容性触摸表面进行放电之前对所述电容性触摸表面进行充电。
16.一种电容性触摸板组件，包括：
电容性触摸板；
时钟，被配置成提供循环的时间间隔；
控制电路，被配置成在预定数目的时间间隔中执行以下步骤：
改变所述电容性触摸板的电压，直至所述电容性触摸板的电压达到阈值电压；
测量所述电容性触摸板的电压达到所述阈值电压需要的时间；
累加测量时间；
其中在预定数目的时间间隔完结时，所述控制电路进一步配置成在累加时间大于阈值时指示与所述电容性触摸板的接触。
17.如权利要求16所述的电容性触摸板组件，其中改变所述电容性触摸板的电压包括对所述电容性触摸板进行充电，直至所述电容性触摸板的电压上升到所述阈值电压。
18.如权利要求17所述的电容性触摸板组件，其中改变所述电容性触摸板的电压进一步包括在每个时间间隔的开始处紧接在对所述电容性触摸板进行充电之前对所述电容性触摸板进行放电。
19.如权利要求16所述的电容性触摸板组件，其中改变所述电容性触摸板的电压包括对所述电容性触摸板进行放电，直至所述电容性触摸板的电压下降到所述阈值电压。
20.如权利要求19所述的电容性触摸板组件，其中改变所述电容性触摸板的电压进一步包括在每个时间间隔的开始处紧接在对所述电容性触摸板进行放电之前对所述电容性触摸板进行充电。
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- 2009-05-12 DE DE112009001503T patent/DE112009001503T5/de not_active Withdrawn
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- 2009-05-12 WO PCT/US2009/043620 patent/WO2009154900A1/en active Application Filing
- 2009-05-12 CN CN200980132242.3A patent/CN102124429B/zh not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| US8098240B2 (en) | 2012-01-17 |
| WO2009154900A1 (en) | 2009-12-23 |
| CA2728410C (en) | 2014-05-06 |
| US20120081336A1 (en) | 2012-04-05 |
| CN102124429B (zh) | 2015-06-24 |
| US8400426B2 (en) | 2013-03-19 |
| CA2728410A1 (en) | 2009-12-23 |
| DE112009001503T5 (de) | 2011-04-28 |
| US20090318229A1 (en) | 2009-12-24 |
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