SYSTEM AND METHOD FOR DETECTING AN ACTIVE PEN WITH A MATRIX SENSOR
First Claim
1. A processing system, comprising:
- a display module configured to drive a display signal onto a plurality of display electrodes for updating a display; and
a sensor module configured to communicate with a plurality of sensor electrodes, wherein the plurality of sensor electrodes includes at least one of the plurality of display electrodes, wherein the sensor module is configured to;
in a first mode of operation, operate a first portion of the plurality of sensor electrodes to receive an active input signal from an active input device, andin a second mode of operation, operate a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device, wherein the first and second portions include at least one sensor electrode in common.
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Accused Products
Abstract
A processing system, input device, and method are disclosed to detect an active input device. The method includes operating a first portion of a plurality of sensor electrodes to receive an active input signal from an active input device, and operating a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device. The first and second portions include at least one sensor electrode in common. The method also includes driving a plurality of display electrodes to update a display image, wherein the plurality of sensor electrodes includes at least one of the plurality of display electrodes.
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Citations
20 Claims
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1. A processing system, comprising:
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a display module configured to drive a display signal onto a plurality of display electrodes for updating a display; and a sensor module configured to communicate with a plurality of sensor electrodes, wherein the plurality of sensor electrodes includes at least one of the plurality of display electrodes, wherein the sensor module is configured to; in a first mode of operation, operate a first portion of the plurality of sensor electrodes to receive an active input signal from an active input device, and in a second mode of operation, operate a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device, wherein the first and second portions include at least one sensor electrode in common. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An input device, comprising:
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a plurality of sensor electrodes, wherein at least one of the plurality of sensor electrodes is operable to update a display image and to perform input sensing; and a processing system coupled with the plurality of sensor electrodes, wherein the processing system is configured to; in a first mode of operation, operate a first portion of the plurality of sensor electrodes to receive an active input signal from an active input device, and in a second mode of operation, operate a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device, wherein the first and second portions include at least one sensor electrode in common. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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in a first mode of operation, operating a first portion of a plurality of sensor electrodes to receive an active input signal from an active input device; in a second mode of operation, operating a second portion of the plurality of sensor electrodes to receive capacitive sensing data corresponding to a passive input device, wherein the first and second portions include at least one sensor electrode in common; and in a third mode of operation, driving a plurality of display electrodes to update a display image, wherein the plurality of sensor electrodes includes at least one of the plurality of display electrodes. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification