Sensing and defining an input object
First Claim
Patent Images
1. An input device comprising:
- a display;
a plurality of sensor electrodes configured to detect an input object in a sensing region of said input device, wherein said sensing region overlaps said display; and
a processing system coupled with said plurality of sensor electrodes, said processing system configured for;
acquiring a capacitive image from said plurality of sensor electrodes; and
correlating a part of said capacitive image with at least one input object template image to determine a type of an input object interacting with said input device.
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Abstract
An input device comprises a display, a plurality of sensor electrodes, and a processing system. The plurality of sensor electrodes is configured to detect an input object in a sensing region of the input device. The sensing region overlaps the display. The processing system is coupled with the plurality of sensor electrodes. The processing system is configured for: acquiring a capacitive image from the plurality of sensor electrodes; and correlating a part of the capacitive image with at least one input object template image to determine a type of an input object interacting with the input device.
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Citations
20 Claims
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1. An input device comprising:
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a display; a plurality of sensor electrodes configured to detect an input object in a sensing region of said input device, wherein said sensing region overlaps said display; and a processing system coupled with said plurality of sensor electrodes, said processing system configured for; acquiring a capacitive image from said plurality of sensor electrodes; and correlating a part of said capacitive image with at least one input object template image to determine a type of an input object interacting with said input device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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; comparing said first part of said capacitive image with a second input object template image, said second input object template image associated with a second type of input object; and in response to a sufficient correlation between said first part of said capacitive image and one of said first and second input object template images, determining a type of input object in said capacitive image. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A processing system for a capacitive input device object sensing using a mutual capacitance sensor device, said processing system comprising:
memory configured to store a plurality of input object template images, wherein the processing system is configured to; acquire a capacitive image with a sensor of said capacitive input device; compare a 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 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)
Specification