Sensing and defining an input object
First Claim
Patent Images
1. A mutual capacitance sensor device comprising:
- a plurality of receiver sensor electrodes;
a plurality of transmitter sensor electrodes; and
a processing system coupled with said plurality of receiver sensor electrodes and coupled with said plurality of transmitter sensor electrodes, said processing system configured for;
acquiring a capacitive image from said pluralities of sensor electrodes; and
correlating a part of said capacitive image with at least one input object template image to determine both a presence and a type of an input object interacting with said mutual capacitance sensor device.
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Abstract
A mutual capacitance sensor device comprises a plurality of receiver sensor electrodes, a plurality of transmitter sensor electrodes, and a processing system coupled with the plurality of receiver sensor electrodes and coupled with the plurality of transmitter sensor electrodes. The processing system is configured for acquiring a capacitive image from the pluralities of sensor electrodes. The processing system is also configured for correlating a part of the capacitive image with at least one input object template image to determine both a presence and a type of an input object interacting with the mutual capacitance sensor device.
52 Citations
20 Claims
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1. A mutual capacitance sensor device comprising:
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a plurality of receiver sensor electrodes; a plurality of transmitter sensor electrodes; and a processing system coupled with said plurality of receiver sensor electrodes and coupled with said plurality of transmitter sensor electrodes, said processing system configured for; acquiring a capacitive image from said pluralities of sensor electrodes; and correlating a part of said capacitive image with at least one input object template image to determine both a presence and a type of an input object interacting with said mutual capacitance sensor device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of capacitive input object sensing, said method comprising:
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acquiring a capacitive image; comparing a first part of said capacitive image with a first input object template image, said first input object template image associated with a first type of input object; and in response to a sufficient correlation between said first part of said capacitive image and said first input object template image, determining a presence of said first type of input object in said capacitive image. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of capacitive input object sensing using a mutual capacitance sensor device, said method comprising:
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acquiring a capacitive image with a sensor of said mutual capacitance sensor device; filtering said capacitive image to obtain a filtered capacitive image; comparing a part of said filtered capacitive image with a first input object template image, said first input object template image associated with a first type of input object; and in response to a sufficient correlation between said capacitive image and said first input object template, determining a location of said first type of input object with respect to said sensor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification