Changing the detection range of a touch sensor
First Claim
Patent Images
1. A method comprising:
- receiving a signal associated with an operation of a device having a touch sensor, the touch sensor comprising;
a first plurality of electrodes oriented in a first direction in a first portion of the touch sensor;
a second plurality of electrodes oriented in the first direction in a second portion of the touch sensor, the second portion of the touch sensor being different than the first portion of the touch sensor; and
a third plurality of electrodes intersecting the first and second plurality of electrodes;
in response to the signal, determining that a detection mode of the touch sensor associated with the device is to be changed; and
in response to the determination;
simultaneously driving the first and the third plurality of electrodes to a first voltage to increase a detection range in the first portion, but not all, of the touch sensor; and
coupling the second plurality of electrodes to a fixed voltage source to decrease a detection range in the second portion, but not all, of the touch sensor.
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Abstract
In one embodiment, a method for changing the detection range of a touch sensor includes receiving a signal associated with an operation of a device having a touch sensor, and in response to the signal, determining that a detection mode of the touch sensor associated with the device is to be changed. In response to the determination, decreasing sensitivity of a portion, but not all, of the touch sensor.
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Citations
20 Claims
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1. A method comprising:
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receiving a signal associated with an operation of a device having a touch sensor, the touch sensor comprising; a first plurality of electrodes oriented in a first direction in a first portion of the touch sensor; a second plurality of electrodes oriented in the first direction in a second portion of the touch sensor, the second portion of the touch sensor being different than the first portion of the touch sensor; and a third plurality of electrodes intersecting the first and second plurality of electrodes; in response to the signal, determining that a detection mode of the touch sensor associated with the device is to be changed; and in response to the determination; simultaneously driving the first and the third plurality of electrodes to a first voltage to increase a detection range in the first portion, but not all, of the touch sensor; and coupling the second plurality of electrodes to a fixed voltage source to decrease a detection range in the second portion, but not all, of the touch sensor. - View Dependent Claims (2, 3, 4, 5, 6, 18, 19)
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7. A controller comprising:
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a storage unit; and a processor unit coupled to the storage unit and configured to; receive a signal associated with an operation of a device comprising a touch sensor, the touch sensor comprising a first plurality of electrodes oriented in a first direction in a first portion of the touch sensor, a second plurality of electrodes oriented in the first direction in a second portion of the touch sensor, and a third plurality of electrodes intersecting the first and second plurality of electrodes; in response to the signal, determine that a detection mode of the touch sensor is to be changed; and in response to the determination; simultaneously drive the first and the third plurality of electrodes to a first voltage to increase a detection range in the first portion, but not all, of the touch sensor; and couple the second plurality of electrodes to a fixed voltage source to decrease a detection range in the second portion, but not all, of the touch sensor. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A mobile phone comprising:
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a touch sensor comprising; a first plurality of electrodes oriented in a first direction in a first portion of the touch sensor; a second plurality of electrodes oriented in the first direction in a second portion of the touch sensor, the second portion of the touch sensor being different than the first portion of the touch sensor; and a third plurality of electrodes intersecting the first and second plurality of electrodes; a touch-sensor controller configured to; receive an indication of a call; in response to the indication, determine that a detection mode is to be changed; and in response to the determination; simultaneously drive the first and the third plurality of electrodes to a first voltage, wherein the first voltage is associated with an increase in detection range in the first portion, but not all, of the touch sensor; and couple the second plurality of electrodes to a ground connector, wherein coupling the second plurality of electrodes to the ground connector is associated with a decrease in detection range in the second portion, but not all, of the touch sensor; wherein an increase in detection range increases the projection of electrical field lines from the touch sensor and a decrease in detection range decreases the projection of electrical field lines from the touch sensor. - View Dependent Claims (14, 15, 16, 17)
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20. A non-transitory computer-readable storage medium embodying logic configured when executed by a processor to perform operations comprising:
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receiving a signal associated with an operation of a device having a touch sensor, the touch sensor comprising; a first plurality of electrodes oriented in a first direction in a first portion of the touch sensor; a second plurality of electrodes oriented in the first direction in a second portion of the touch sensor; and a third plurality of electrodes intersecting the first and second plurality of electrodes; in response to the signal, determining that a detection mode of the touch sensor associated with the device is to be changed; and in response to the determination; simultaneously driving the first and the third plurality of electrodes to a first voltage to increase a detection range in the first portion, but not all, of the touch sensor; and coupling the second plurality of electrodes to a fixed voltage source to decrease a detection range in the second portion, but not all, of the touch sensor.
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Specification