US 2020/0401265 A1 · ABSORPTION CORRECTION FOR FABRIC TOUCH SENSING LAYER

Abstract

Fabric touch-sensitive layers provided for electronic devices can absorb moisture, liquids or chemicals, which can cause drift in measurements of touch nodes formed in the fabric layer. In some examples, reference nodes formed in a fabric layer can be used to account for drift due to the absorption of moisture, liquids or chemicals. The reference nodes can be isolated from the effects of proximate or touching objects and from absorption of moisture, liquids or chemicals. The reference nodes can also be formed in a fabric layer having the same or similar properties as the fabric touch-sensitive layers. When measurements of touch nodes drift due to changes in absorption, the measurements can be adjusted based on measurements of reference nodes.

Claims20

Dependent claims

An input device comprising:

a first fabric layer including one or more touch nodes;
and
a second fabric layer, separate from the first fabric layer, including one or more reference nodes;
wherein at least a portion of the first fabric layer forms at least a portion of an external surface of the input device and wherein the second fabric layer is disposed within the input device.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/009,671Filed 1 Sep 2020

Priority

17 Jul 2017

Published

24 Dec 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 3/0418
Control or interface arrangements specially adapted for digitisers: for error correction or compensation, e.g. based on parallax, calibration or…
B32B 5/26
One layer being a fibrous or filamentary layer: another layer next to it also being fibrous or filamentary
G06F 3/0202
Input arrangements using manually operated switches, e.g. using keyboards or dials: constructional details or processes of manufacture of the…
G06F 3/023
Input arrangements using manually operated switches, e.g. using keyboards or dials: arrangements for converting discrete items of information into…

Family

Application62/533,578Us provisional application · filed 17 Jul 2017

Application16/036,766Division · filed 16 Jul 2018

Application17/009,671Division

US 10,788,936 B1Related patent

US 11,256,362 B2Related patent

US 2020/0401265 A1This patent

From the US filing history. Foreign family members aren’t listed.

Absorption correction for fabric touch sensing layer

Life of this patent

Absorption correction for fabric touch sensing layer

Life of this patent

Abstract

Claims20