Disabling stylus to prevent worn tip performance degradation and screen damage
First Claim
1. A system comprising:
- a touch sensor panel; and
a processor coupled to the touch sensor panel and capable of;
tracking a parameter representative of an amount of tip wear of a tip portion of an active stylus, the parameter updated based on an input received at the touch sensor panel from the active stylus, wherein the parameter comprises a measure of a total capacitive signal strength of the input from the active stylus detected at one or more electrodes of the touch sensor panel;
in accordance with a determination that the parameter does not exceed a first threshold, performing an action associated with the input from the active stylus; and
in accordance with a determination that the parameter exceeds the first threshold, rejecting the input from the active stylus.
1 Assignment
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Accused Products
Abstract
A level of wear of a stylus tip can be estimated and in accordance with a determination that the level of wear of the stylus tip exceeds a threshold, the stylus input functionality of an electronic device can be disabled. The threshold can be set such that the stylus can be disabled before the stylus sensing performance degrades to a degree perceptible to a human and/or before exposing internal portions of the stylus that can scratch a touch screen. Additionally or alternatively, a notification can be provided to indicate to a user that the stylus tip should be replaced. In some examples, the estimated level of wear can also be used to provide warning notifications. Stylus tip wear can be estimated, for example, based on a detected total signal strength or based on an estimated total distance traversed by the stylus tip across a surface.
18 Citations
22 Claims
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1. A system comprising:
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a touch sensor panel; and a processor coupled to the touch sensor panel and capable of; tracking a parameter representative of an amount of tip wear of a tip portion of an active stylus, the parameter updated based on an input received at the touch sensor panel from the active stylus, wherein the parameter comprises a measure of a total capacitive signal strength of the input from the active stylus detected at one or more electrodes of the touch sensor panel; in accordance with a determination that the parameter does not exceed a first threshold, performing an action associated with the input from the active stylus; and in accordance with a determination that the parameter exceeds the first threshold, rejecting the input from the active stylus. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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tracking a parameter representative of an amount of tip wear of a tip portion of an active stylus, the parameter updated based on an input received from the active stylus, wherein the parameter comprises a measure of a total capacitive signal strength of the input from the active stylus detected at one or more electrodes of a touch sensor panel; in accordance with a determination that the parameter does not exceed a first threshold, performing an action associated with the input from the active stylus; and in accordance with a determination that the parameter exceeds the first threshold, rejecting the input from the active stylus. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable storage medium storing instructions, which when executed by a processor, cause the processor to:
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track a parameter representative of an amount of tip wear of a tip portion of an active stylus, the parameter updated based on an input received from the active stylus, wherein the parameter comprises a measure of a total capacitive signal strength of the input from the active stylus detected at one or more electrodes of a touch sensor panel; in accordance with a determination that the parameter does not exceed a first threshold, perform an action associated with the input from the active stylus; and in accordance with a determination that the parameter exceeds the first threshold, reject the input from the active stylus. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An electronic device for use with a stylus comprising:
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a touch screen; and a processor coupled to the touch screen and capable of; estimating a level of wear of a stylus tip by tracking a parameter representative of an amount of tip wear of a tip portion of an active stylus the parameter updated based on an input received at the touch sensor panel from the active stylus, wherein the parameter comprises a measure of a total capacitive signal strength of the input from the active stylus detected at one or more electrodes of the touch screen; in accordance with a determination that the level of wear of the stylus tip exceeds a first threshold, disabling stylus input functionality of the electronic device; and in accordance with a determination that the level of wear of the stylus tip does not exceed the first threshold while the stylus input functionality of the electronic device is disabled, re-enabling the stylus input functionality of the electronic device. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification