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1. 发明公开

EP0150421A1 Capacitance-variation-sensitive touch sensing array system 失效
标题翻译：系统管理员berührungsempfindlichen，aufKapazitätsänderungenansprechenden Anordnung。
公开(公告)号：EP0150421A1
公开(公告)日：1985-08-07
申请号：EP84115648.2
申请日：1984-12-17
申请人： Integrated Touch Arrays, Inc.
发明人： Evans, John W.
IPC分类号： H03K17/96 , G06K11/06
CPC分类号： G06F3/044 , H03K17/9618 , H03K17/9622 , H03K2017/9604 , H03K2017/9613
摘要： A capacitance-variation-sensitive touch sensing array system including an array of antenna lines; and an array of touch elements, with each touch element being coupled to at least one antenna line of the antenna line array to vary the capacitance between each of the coupled antenna lines and ground upon the touch element coupled thereto being touched by an operator. An array of drive lines are capacitively coupled to the antenna lines. An array of sense lines are capacitively coupled to the antenna lines to derive sense signals from the antenna lines when drive signals are applied to the drive lines to drive the antenna lines. The amplitudes of the respective sense signals are dependent upon whether the capacitance between the respective driven antenna line and circuit ground is varied by an operator touching the touch element coupled to the driven antenna line. A microprocessor processes values derived from the sense signals to provide information associated with any particular touch element that is touched by an operator. A sequence of drive signals having different predetermined characteristics is repetitively applied to the different drive lines to cause differently characterized sense signals associated with different antenna lines to be derived on a sense line coupled to a plurality of different antenna lines. A first portion of the antenna array is supported by one side of a thin dielectric substrate and a second portion of the antenna array is supported by the opposite side of the thin dielectric substrate. The touch elements individually include a tab supported by the substrate and extending from an antenna line so that the capacitance between the antenna line and ground is varied when the tab is touched.
摘要翻译：一种电容变化敏感的触摸感测阵列系统，包括天线线阵列; 以及触摸元件阵列，其中每个触摸元件被耦合到天线线阵列的至少一个天线线，以便在耦合到其上的触摸元件之间改变每个耦合的天线线之间的电容，并且由操作者触摸触摸元件。驱动线阵列电容耦合到天线。当驱动信号被施加到驱动线以驱动天线时，感测线的阵列电容耦合到天线线以导出来自天线的感测信号。相应的感测信号的幅度取决于操作者是否接触耦合到被驱动天线线路的触摸元件来改变相应的驱动天线线路和电路地线之间的电容。微处理器处理从感测信号导出的值，以提供与操作者触摸的任何特定触摸元件相关联的信息。具有不同预定特性的驱动信号序列被重复地应用于不同的驱动线，从而在与多个不同的天线线耦合的感测线上导出与不同天线线相关联的不同特征的感测信号。天线阵列的第一部分由薄介电基片的一侧支撑，并且天线阵列的第二部分由薄介电基片的相对侧支撑。触摸元件分别包括由基板支撑并且从天线线延伸的突片，使得当触片接触时天线和地之间的电容变化。

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