CAPACITIVE TOUCH SCREEN SENSING AND ELECTRIC FIELD SENSING FOR MOBILE DEVICES AND OTHER DEVICES
First Claim
1. A system comprising:
- a touch screen comprising multiple electrodes; and
a processing unit configured to use the electrodes to;
detect an object contacting the touch screen or within a first distance from the touch screen in a first mode; and
detect the object within a second distance from the touch screen in a second mode, the second distance larger than the fist distance.
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Accused Products
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 fist 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.
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Citations
20 Claims
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1. A system comprising:
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a touch screen comprising multiple electrodes; and a processing unit configured to use the electrodes to; detect an object contacting the touch screen or within a first distance from the touch screen in a first mode; and detect the object within a second distance from the touch screen in a second mode, the second distance larger than the fist distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
a processing unit configured to be coupled to multiple electrodes in a touch screen and to use the multiple electrodes to; detect an object contacting a touch screen or within a first distance from the touch screen in a first mode; and detect the object within a second distance from the touch screen in a second mode, the second distance larger than the fist distance. - View Dependent Claims (11, 12, 13, 14)
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15. A method comprising:
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using multiple electrodes in a touch screen to detect an object contacting the touch screen or within a first distance from the touch screen in a first mode; and using the multiple electrodes in the touch screen to detect the object within a second distance from the touch screen in a second mode, the second distance larger than the fist distance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification