公开(公告)号：US08115499B2

公开(公告)日：2012-02-14

申请号：US12470729

申请日：2009-05-22

申请人： Bryce T. Osoinach ,  Tak Kwan Vincent Ko

发明人： Bryce T. Osoinach ,  Tak Kwan Vincent Ko

IPC分类号： G01R27/26 ,  G06F3/041 ,  G06F3/045

CPC分类号： H03K17/9622 ,  G06F1/3231 ,  G06F1/3287 ,  G06F3/0416 ,  H03K2217/960765

摘要： The electrical equivalent of a relatively large area proximity detection capability is provided in a space limited electronic device (20, 30) with many individual input electrodes (24, 34, 44) by dynamically coupling parallel groups of the individual electrodes (24, 34, 44) and applying a proximity and/or contact test thereto. The parallel grouped electrodes act like a single large electrode and permit proximity detection at greater distances and with greater sensitivity. A multiplexer (74) automatically couples individual input electrodes (23, 24, 44) and then parallel grouped electrodes to the proximity (or contact) sensor(s) (46, 66), so that they are scanned and sensed individually and collectively in a time less than human reaction time, whereby the proximity sense function appears as if provided by a separate large area electrode. Proximity spatial detection accuracy is increased by using some of the electrodes (24, 34, 44) as driven shields to remove positional ambiguity.

摘要翻译： 通过动态地耦合各个电极（24,34,44）的平行组，在具有许多单独的输入电极（24,34,44）的空间受限的电子设备（20,30）中提供相对较大的区域接近检测能力的电当量， 44）并对其进行接近和/或接触测试。 平行分组的电极像单个大电极那样起作用，并允许更大的距离和更大的灵敏度的接近检测。 多路复用器（74）将各个输入电极（23,24,44）自动耦合，然后将平行分组的电极耦合到接近（或接触）传感器（46,66），使得它们被单独地和集体地扫描和感测 时间小于人类反应时间，从而接近感测功能看起来好像由独立的大面积电极提供。 通过使用一些电极（24,34,44）作为驱动屏蔽来消除位置歧义，增加了接近空间检测精度。