US 10,885,304 B2Granted

Electronic apparatus and under-screen fingerprint sensing method thereof

AssigneeEgis Technology Inc.

InventorChen-Chang Huang

Life of this patent

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Abstract

An electronic apparatus and an under-screen fingerprint sensing method thereof are provided. The electronic apparatus includes a processing circuit, a touch panel, and a fingerprint sensing apparatus. The processing circuit is coupled to the touch panel and the fingerprint sensing apparatus. The fingerprint sensing apparatus includes a plurality of optical fingerprint sensing units. The touch panel provides touch information of a finger to the processing circuit in response to the finger touch detected by the touch panel. The processing circuit determines a fingerprint sensing region based on the touch information and drives a plurality of first sensing-enabled-units among the optical fingerprint sensing units based on the fingerprint sensing region, such that the fingerprint sensing apparatus obtains a fingerprint image of the finger via the first sensing-enabled-units. The first sensing-enabled-units are a part of the optical fingerprint sensing units.

Claims12

Dependent claims

An electronic apparatus, comprising:

a processing circuit;
a touch panel, coupled to the processing circuit;
and
a fingerprint sensing apparatus, coupled to the processing circuit and comprising a plurality of optical fingerprint sensing units, wherein
the touch panel provides touch information of a finger to the processing circuit in response to a finger touch detected by the touch panel,
the processing circuit determines a fingerprint sensing region based on the touch information and drives a plurality of first sensing-enabled-units among the optical fingerprint sensing units based on the fingerprint sensing region, such that the fingerprint sensing apparatus obtains a fingerprint image of the finger via the first sensing-enabled-units, wherein the first sensing-enabled-units are a part of the optical fingerprint sensing units,
the touch information comprises distribution of a touch sensing value obtained by the touch panel after the touch panel detects the touch of the finger,
the processing circuit determines a location and a size of the fingerprint sensing region based on distribution of the touch sensing value, and
the processing circuit determines the location of the fingerprint sensing region based on a peak of distribution of the touch sensing value, and determines the size of the fingerprint sensing region based on a distribution variation width of distribution of the touch sensing value.

6 more elements

An under-screen fingerprint sensing method, applied to an electronic apparatus, wherein the electronic apparatus comprises a processing circuit, a touch panel, and a fingerprint sensing apparatus, the fingerprint sensing apparatus comprises a plurality of optical fingerprint sensing units, and the method comprises:

providing, by the touch panel, touch information of a finger to the processing circuit in response to the finger touch detected by the touch panel;
determining, by the processing circuit, a fingerprint sensing region based on the touch information;
and
driving, by the processing circuit, a plurality of first sensing-enabled-units among the optical fingerprint sensing units based on the fingerprint sensing region, such that the fingerprint sensing apparatus obtains a fingerprint image of the finger via the first sensing-enabled-units, wherein the first sensing-enabled-units are a part of the optical fingerprint sensing units,
wherein the first sensing-enabled-units are a part of the optical fingerprint sensing units,
wherein the touch information comprises distribution of a touch sensing value obtained by the touch panel after the touch panel detects the touch of the finger, and the step of determining, by the processing circuit, the fingerprint sensing region based on the touch information comprises:
determining, by the processing circuit, a location and a size of the fingerprint sensing region based on distribution of the touch sensing value, and
wherein the step of determining, by the processing circuit, the location and the size of the fingerprint sensing region based on distribution of the touch sensing value comprises:
determining, by the processing circuit, the location of the fingerprint sensing region based on a peak of distribution of the touch sensing value;
and
determining, by the processing circuit, the size of the fingerprint sensing region based on a distribution variation width of distribution of the touch sensing value.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/697,215Filed 27 Nov 2019 · us provisional application
Priority: CN 2019 1 10642244 Nov 2019
Published: US 2020/0210677 A12 Jul 2020
Granted: 5 Jan 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06V 40/1324
Sensors therefor: by using geometrical optics, e.g. using prisms
G06F 3/0416
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: control or interface arrangements specially adapted for…
G06V 10/147
Optical characteristics of the device performing the acquisition or on the illumination arrangements: details of sensors, e.g. sensor lenses
G06V 10/25
Image preprocessing: determination of region of interest [ROI] or a volume of interest [VOI]