Material-discerning proximity sensing
US-9201548-B2 · Dec 1, 2015 · US
Capacitive and inductive sensing
US9160331B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9160331-B2 |
| Application number | US-201213355013-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2012 |
| Priority date | Oct 28, 2011 |
| Publication date | Oct 13, 2015 |
| Grant date | Oct 13, 2015 |
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Abstract
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In one embodiment, a method includes in an inductive-sensing mode, by a controller, applying an alternating-current (AC) signal on a first electrode of a capacitive touch sensor. The capacitive touch sensor is configured to operate in the inductive-sensing mode and a capacitive-sensing mode. The method also includes sensing a signal indicative of a magnetic field on the first electrode. The signal is due at least in part to a magnetic field generated by the object and the magnetic field is generated at least in part in response to the AC signal applied on the first electrode. The method also includes determining a position of the object generating the magnetic field based on the signal indicative of the magnetic field.
First claim
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What is claimed is: 1. A method comprising: in an inductive-sensing mode, by a controller, applying a first alternating-current (AC) signal on a first electrode of a capacitive touch sensor, the capacitive touch sensor configured to operate in the inductive-sensing mode and a capacitive-sensing mode, the first electrode configured, in the capacitive-sensing mode, to operate as a drive electrode, the first electrode coupled, in the inductive sensing mode, to the first AC signal by…
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Physics · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Physics · mapped topic
- H03K17/955Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9160331B2 cover?
- In one embodiment, a method includes in an inductive-sensing mode, by a controller, applying an alternating-current (AC) signal on a first electrode of a capacitive touch sensor. The capacitive touch sensor is configured to operate in the inductive-sensing mode and a capacitive-sensing mode. The method also includes sensing a signal indicative of a magnetic field on the first electrode. The sig…
- Who is the assignee on this patent?
- Bakken Vemund Kval, Pedersen Trond Jarle, Ali Yassar, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H03K17/955. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 13 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).