Invention Grant
US08547360B2 Capacitive touch screen sensing and electric field sensing for mobile devices and other devices
有权
用于移动设备和其他设备的电容式触摸屏感测和电场感测
- Patent Title: Capacitive touch screen sensing and electric field sensing for mobile devices and other devices
- Patent Title (中): 用于移动设备和其他设备的电容式触摸屏感测和电场感测
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Application No.: US13179135Application Date: 2011-07-08
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Publication No.: US08547360B2Publication Date: 2013-10-01
- Inventor: Joshua Posamentier
- Applicant: Joshua Posamentier
- Applicant Address: US CA Santa Clara
- Assignee: National Semiconductor Corporation
- Current Assignee: National Semiconductor Corporation
- Current Assignee Address: US CA Santa Clara
- Agent Eugene C. Conser; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G06F3/045
- IPC: G06F3/045
Abstract:
A system includes a touch screen having multiple electrodes. The system also includes a processing unit configured to use the electrodes to (i) detect an object contacting the touch screen or within a first distance from the touch screen in a first mode and (ii) detect the object within a second distance from the touch screen in a second mode. The second distance is larger than the first distance. The processing unit can be configured to use the multiple electrodes in the first mode to perform capacitive touch screen sensing. The processing unit can also be configured to use the multiple electrodes in the second mode to perform electric field sensing.
Public/Granted literature
- US20130009906A1 CAPACITIVE TOUCH SCREEN SENSING AND ELECTRIC FIELD SENSING FOR MOBILE DEVICES AND OTHER DEVICES Public/Granted day:2013-01-10
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