Mitigation of parasitic capacitance
US-9086768-B2 · Jul 21, 2015 · US
Wide dynamic range capacitive sensing
US9201547B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9201547-B2 |
| Application number | US-201213460620-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 30, 2012 |
| Priority date | Apr 30, 2012 |
| Publication date | Dec 1, 2015 |
| Grant date | Dec 1, 2015 |
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Abstract
Official abstract text for this publication.
A touch sensor panel configured to detect objects touching the panel as well as objects that are at a varying proximity to the touch sensor panel. The touch sensor panel includes circuitry that can configure the panel in a mutual capacitance (near field) architecture or a self-capacitance (far field and super far field) architecture. The touch sensor panel can also include circuitry that works to minimize an effect that a parasitic capacitance can have on the ability of the touch sensor panel to reliably detect touch and proximity events.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of sensing proximity events, comprising: configuring a touch sensor panel to a self-capacitance architecture; stimulating the touch sensor panel with one or more stimulation signals to generate one or more touch signals; reducing an effect of a parasitic capacitance on the one or more touch signals received from the touch sensor panel by driving a shield with a shield signal of a same frequency and phase as the one or more stimulation signals,…
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Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
- G06F3/0418Primary
Physics · mapped topic
- G06F3/044Primary
Physics · mapped topic
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- What does patent US9201547B2 cover?
- A touch sensor panel configured to detect objects touching the panel as well as objects that are at a varying proximity to the touch sensor panel. The touch sensor panel includes circuitry that can configure the panel in a mutual capacitance (near field) architecture or a self-capacitance (far field and super far field) architecture. The touch sensor panel can also include circuitry that works …
- Who is the assignee on this patent?
- Elias John Greer, Hotelling Steven Porter, Apple Inc
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0418. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 01 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).