US 2021/0173541 A1Published application

Apparatus and method for detecting press

AssigneeAlpine Electronics, Inc.

InventorShunichi Suto

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Abstract

In a first state before a first event is detected, a determination unit of a press detection apparatus prevents a definitive value from increasing steeply when the pressing force has increased steeply, and decreases the definitive value steeply when the pressing force has decreased steeply. In a second state after the first event is detected and before a second event is detected, the determination unit prevents the definitive value from increasing steeply when the pressing force has increased steeply, and prevents the definitive value from decreasing steeply when the pressing force has decreased steeply. This reduces the possibility that the definitive value increases steeply in the first state and increases and decreases steeply in the second state even under vibration.

Claims16

Dependent claims

A press detection apparatus comprising:

a pressing-force detection unit configured to detect a pressing force applied to a press target;
and
a determination unit configured to determine a temporal change in a definitive value based on a temporal change in the pressing force detected by the pressing-force detection unit, detect a first event in which the definitive value becomes a first threshold or greater from a value less than the first threshold, and after the definitive value exceeds the first threshold, detect a second event in which the definitive value becomes equal to or less than a second threshold determined based on a peak value of the definitive value,
wherein, when determining the temporal change in the definitive value,
in a first state before the first event is detected, the determination unit prevents the definitive value from increasing steeply when the pressing force has increased steeply, and decreases the definitive value steeply when the pressing force has decreased steeply, and
in a second state after the first event is detected and before the second event is detected, the determination unit prevents the definitive value from increasing steeply when the pressing force has increased steeply, and prevents the definitive value from decreasing steeply when the pressing force has decreased steeply.

3 more elements

A method for detecting press using a press detection apparatus including a pressing-force detection unit configured to detect a pressing force applied to a press target and a determination unit configured to determine a temporal change in a definitive value based on a temporal change in the pressing force detected by the pressing-force detection unit, detect a first event in which the definitive value becomes a first threshold or greater from a value less than the first threshold, and detect a second event after the definitive value exceeds the first threshold, in which the definitive value becomes equal to or less than a second threshold determined based on a peak value of the definitive value, the method comprising:

in a first state before the first event is detected, the determination unit of the press detection apparatus preventing the definitive value from increasing steeply when the pressing force has increased steeply, and decreasing the definitive value steeply when the pressing force has decreased steeply, and
in a second state after the first event is detected and before the second event is detected, the determination unit of the press detection apparatus preventing the definitive value from increasing steeply when the pressing force has increased steeply, and preventing the definitive value from decreasing steeply when the pressing force has decreased steeply.

Dependencies are inferred from the claim text.

Facts

Application: 17/097,531Filed 13 Nov 2020
Priority: JP 2019-2194874 Dec 2019
Published: 10 Jun 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 3/04146
Using force sensing means to determine a position: using pressure sensitive conductive elements delivering a boolean signal and located between…
G06F 3/04883
Using a touch-screen or digitiser, e.g. input of commands through traced gestures: for inputting data by handwriting, e.g. gesture or text
G06F 3/0416
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: control or interface arrangements specially adapted for…
G06F 3/04842
For the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a…:…

Family

US 11,340,726 B2Related patent
US 2021/0173541 A1This patent

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

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