Classification of touch input as being unintended or intended
First Claim
1. A system comprising:
- a touch surface configured to receive a plurality of inputs;
one or more processors communicatively coupled to the touch surface; and
memory storing instructions that, when executed by the one or more processors, cause the system to;
implement a first classifier to evaluate information associated with a first input and a second input to determine whether the second input is an intended touch input or an unintended touch input, wherein the first classifier evaluates the information to determine an inter-arrival distance between a first position at which the first input arrives at the touch surface and a second position at which the second input arrives at the touch surface; and
in response to the first classifier being unable to determine whether the second input is the intended touch input or the unintended touch input, implement at least one subsequent classifier to evaluate additional information to determine whether the second input is the intended touch input or the unintended touch input, wherein the additional information evaluated is associated with a movement of the first input relative to a movement of the second input.
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Accused Products
Abstract
The techniques described herein implement a classification process to evaluate information associated with a tool input (e.g., from an input tool such as a pen or a stylus) and a user touch input (e.g., from a finger or a palm of a hand) to determine whether the user touch input is an intended or an unintended touch input. The information evaluated may be associated with an arrival of the tool input relative to an arrival of the user touch input. The information evaluated may also be associated with a movement of the tool input relative to a movement of the user touch input. In various implementations, the techniques may calculate an evaluation score and compare the evaluation score to a confidence classification threshold. If a confident classification cannot be achieved, the techniques further the classification process as more information associated with the inputs is received.
24 Citations
20 Claims
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1. A system comprising:
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a touch surface configured to receive a plurality of inputs; one or more processors communicatively coupled to the touch surface; and memory storing instructions that, when executed by the one or more processors, cause the system to; implement a first classifier to evaluate information associated with a first input and a second input to determine whether the second input is an intended touch input or an unintended touch input, wherein the first classifier evaluates the information to determine an inter-arrival distance between a first position at which the first input arrives at the touch surface and a second position at which the second input arrives at the touch surface; and in response to the first classifier being unable to determine whether the second input is the intended touch input or the unintended touch input, implement at least one subsequent classifier to evaluate additional information to determine whether the second input is the intended touch input or the unintended touch input, wherein the additional information evaluated is associated with a movement of the first input relative to a movement of the second input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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determining that a first input is being simultaneously received at a touch surface along with a second input; determining that the second input is associated with user touch; and determining an inter-arrival distance between a first position at which the first input arrives at the touch surface and a second position at which the second input arrives at the touch surface; evaluating, by one or more processors, the inter-arrival distance to classify the second input as an intended touch input or an unintended touch input. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system comprising:
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one or more processors communicatively coupled to the touch surface; and memory storing instructions that, when executed by the one or more processors, cause the system to; implement a first classifier to evaluate one or more first classifier factors associated with a first input and a second input, the one or more first classifier factors to classify the second input as being either an intended touch input or an unintended touch input, wherein an individual first classifier factor has a corresponding weight to calculate an evaluation score and one first classifier factor is associated with a first arrival position of the first input relative to a second arrival position of the second input; determine, based at least in part on the evaluation score, that the first classifier is unable to confidently classify the second input as being either the intended touch input or the unintended touch input; and implement a subsequent classifier to evaluate one or more second classifier factors associated with the first input and the second input, wherein the one or more second classifier factors includes at least one first classifier factor with a corresponding weight adjusted to decrease an evaluation score influence during the implementation of the subsequent classifier. - View Dependent Claims (18, 19, 20)
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Specification