Adaptive force sensing
First Claim
Patent Images
1. A method of operating a force-sensitive input device having an input surface, the method comprising:
- declaring a first press action upon detecting a first amount of force applied to the input surface that exceeds a first no-press force value by at least a first press threshold value;
determining a maximum force value applied to the input surface during the first press action;
based on the determined maximum force value, determining a release threshold value; and
declaring a release action based upon detecting that the first amount of force applied to the input surface during the first press action has decreased from the maximum force value by at least the release threshold value; and
determining a second no-press force value for a second press action, wherein the second no-press force value differs from the first no-press force value.
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Abstract
A method of operating a force-sensitive input device having an input surface comprises declaring a first press action upon detecting an amount of force applied to the input surface that exceeds a first no-press force value by at least a first press threshold value, determining a maximum force value applied to the input surface during the first press action, and setting a release threshold value for a subsequent release action based on the determined maximum force value.
17 Citations
20 Claims
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1. A method of operating a force-sensitive input device having an input surface, the method comprising:
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declaring a first press action upon detecting a first amount of force applied to the input surface that exceeds a first no-press force value by at least a first press threshold value; determining a maximum force value applied to the input surface during the first press action; based on the determined maximum force value, determining a release threshold value; and declaring a release action based upon detecting that the first amount of force applied to the input surface during the first press action has decreased from the maximum force value by at least the release threshold value; and determining a second no-press force value for a second press action, wherein the second no-press force value differs from the first no-press force value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A processing system for a force-sensitive input device having an input surface, the processing system comprising:
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a force sensing module communicatively coupled to a plurality of sensor electrodes of the input device, wherein the force sensing module is configured to; declare, based on signals received from the plurality of sensor electrodes, a first press action upon detecting a first amount of force applied to the input surface exceeding a first no-press force value by at least a first press threshold value; determine a maximum force value applied to the input surface during the first press action; based on the determined maximum force value, determine a release threshold value; and declare a release action based upon detecting that a second the first amount of force applied to the input surface during the first press action has decreased from the maximum force value by at least sat-files the release threshold value; and determine a second no-press force value for a second press action, wherein the second no-press force value differs from the first no-press force value. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An input device comprising:
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a plurality of sensor electrodes configured to detect positional information and force information of input objects in a sensing region of the input device, the sensing region overlapping an input surface of the input device; a processing system communicatively coupled to the plurality of sensor electrodes, the processing system configured to; declare, based on signals received from the plurality of sensor electrodes, a first press action upon detecting a first amount of force applied to the input surface exceeding a first no-press force value by at least a first press threshold value; determine a maximum force value applied to the input surface during the first press action; based on the determined maximum force value, determining a release threshold value; declare a release action based upon detecting that a second amount of force applied to the input surface during the first press action satisfies the release threshold value; and determine a second no-press force value for a second press action, wherein the second no-press force value differs from the first no-press force value. - View Dependent Claims (18, 19, 20)
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Specification