Touch sensing unit and display device including the same
US-12164734-B2 · Dec 10, 2024 · US
Reduction of noise and de-ghosting in a mutual capacitance multi-touch touchpad
US8976145B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8976145-B2 |
| Application number | US-201213397527-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 15, 2012 |
| Priority date | Feb 15, 2011 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Decreasing the cost of a touchpad by avoiding the cost of simultaneously measuring all signals from sense electrodes by using a limited number of measuring circuits to accomplish noise reduction and de-ghosting of signal data to thereby obtain the precise location of multiple fingers on a touchpad, wherein the touchpad separates the drive electrodes into groups to thereby provide a means for obtaining granular location information for de-ghosting the touchpad, and wherein overlapping measurements are made of groups of sense electrodes to obtain data that is separated in time to thereby obtain an averaged signal for each electrode and thereby reduce sensitivity to noise.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for reducing noise in measurements used to determine a location of at least one finger on a touch sensor, said method comprised of the steps of: 1) providing a touch sensor having a first electrode axis which is orthogonal to but co-planar with a second electrode axis, wherein each of the electrode axes are comprised of a plurality of parallel electrodes, wherein the touch sensor receives sense signals on the axis that is selected to function as sen…
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- G06F3/044Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G06F3/0446Primary
Physics · mapped topic
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- What does patent US8976145B2 cover?
- Decreasing the cost of a touchpad by avoiding the cost of simultaneously measuring all signals from sense electrodes by using a limited number of measuring circuits to accomplish noise reduction and de-ghosting of signal data to thereby obtain the precise location of multiple fingers on a touchpad, wherein the touchpad separates the drive electrodes into groups to thereby provide a means for ob…
- Who is the assignee on this patent?
- Taylor David C, Vincent Paul, Bytheway Jared G, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G06F3/044. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).