Information handling system touch device false touch detection and mitigation
First Claim
Patent Images
1. An information handling system comprising:
- a processor operable to execute instructions to process information;
a memory interfaced with the processor to store the instructions and information;
a graphics processor interfaced with the processor to generate visual information from the information, the visual information configured to present visual images at a display;
a touchscreen display interfaced with the graphics processor and operable to present the visual images;
a touch controller interfaced with the touchscreen display, the touch controller detecting touches at the touchscreen; and
a totem disposed on the touchscreen and touching the touchscreen with plural feet having a predetermined touch pattern, at least one of the plural feet having an active capacitance selectively applied based upon one or more predetermined conditions.
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Abstract
Detection and tracking of a totem by a touchscreen touch controller mitigates false touches and false inputs by adapting capacitance at the totem feet. Totem feet have a capacitance that falls between a noise threshold and a finger touch threshold so that a pattern of the totem feet is detected separate from finger touches. Active capacitance is applied to one or more of the totem feet to enhance totem detection, such as by highlighting totem contact points of interest to an end user for a rotational versus linear input.
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Citations
9 Claims
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1. An information handling system comprising:
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a processor operable to execute instructions to process information; a memory interfaced with the processor to store the instructions and information; a graphics processor interfaced with the processor to generate visual information from the information, the visual information configured to present visual images at a display; a touchscreen display interfaced with the graphics processor and operable to present the visual images; a touch controller interfaced with the touchscreen display, the touch controller detecting touches at the touchscreen; and a totem disposed on the touchscreen and touching the touchscreen with plural feet having a predetermined touch pattern, at least one of the plural feet having an active capacitance selectively applied based upon one or more predetermined conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification