# US 11,114,901 B2 · Cradle device having wireless charging function

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- Number: US 11,114,901 B2
- Document ID: US11114901B2
- Status: Granted
- Kind: B2
- Application number: 16/088,527
- Filed: 2017-06-27
- Published: 2019-04-25
- Granted: 2021-09-07
- Earliest claimed: 2016-07-05
- Assignees: Cna Co., Ltd.
- Applicants: Cna Co., Ltd.
- Inventors: Dongsu Cha
- Web page: https://patentgrep.com/patent/US11114901B2

## CPC

- G06K 7/10158: {methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field}
- H02J 7/70: characterised by the mechanical construction
- H02J 50/10: using inductive coupling
- H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
- H04M 1/04: Supports for telephone transmitters or receivers
- H04M 1/72412: using two-way short-range wireless interfaces
- H02J 50/90: involving detection or optimisation of position, e.g. alignment
- H04B 5/79: for data transfer in combination with power transfer
- H04M 2250/04: including near field communication means, e.g. RFID
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04B: TRANSMISSION

## Abstract

A cradle device for providing a wireless charging function according to the present invention comprises: a cradle part provided for being mobile terminal-mountable; a wireless charging module which is disposed inside the cradle part and includes a transmitting coil, a switching part for switching a connecting passage between an external power supply and the transmitting coil, and a control part for controlling the switching part; and an NFC tag coupled to the wireless charging module, wherein, when receiving a tag recognition signal from the NFC tag, the control part performs a turn-on control of the switching part. According to the present invention, the cradle device can simultaneously provide a mobile terminal with a wireless charging function and a user via the mobile terminal with various contents provided through NFC tag information.

## Claims

### Claim 1

A cradle device comprising:
a holder part configured to hold a mobile terminal;
a wireless charging module provided in the holder part, and comprising a transmitter coil, a switching unit configured to switch connection paths between an external power supply and the transmitter coil, and a controller configured to control the switching unit; and
an NFC tag coupled to the wireless charging module, the NFC tag storing NFC tag information,
wherein the controller controls the switching unit to be turned on upon receiving a tag recognition signal from the NFC tag,
wherein the tag recognition signal is an induced electromotive force signal generated from an antenna of the NFC tag in response to an RF signal transmitted from a tag recognition unit of the mobile terminal, wherein the tag recognition unit of the mobile terminal is controlled such that an NFC tag reader function is selectively turned on by user setting to generate the RF signal and read the NFC tag information stored in the NFC tag,
wherein the cradle device further comprises, at one side of the holder part, a seating recognition unit configured to recognize whether or not the mobile terminal is seated through a pressure sensor for checking a load of the mobile terminal,
wherein after the switching unit is controlled to be turned on, when the tag recognition signal is not transmitted from the NFC tag, and the seating recognition unit recognizes that the mobile terminal is not seated, the controller controls the switching unit to be turned off, and
wherein after the switching unit is controlled to be turned on, when the tag recognition signal is not transmitted from the NFC tag, the controller controls the switching unit to be turned off after a predetermined period of time.

### Claim 2 (depends on 1)

The cradle device of claim 1, wherein the NFC tag information recognized by the tag recognition unit of the mobile terminal comprises at least one piece of URL information of a website, text information, and voice information, and content provided in the URL information comprises at least one piece of content selected from predetermined videos, music, predetermined text information, predetermined voice information, predetermined advertisement information, menu information of a store in which the cradle device is installed, event information provided by a store, and event information provided by a store in a region where the mobile terminal is located.

### Claim 3 (depends on 1)

The cradle device of claim 1, further comprising an LED configured to emit light by an induced electromotive force generated from the antenna of the NFC tag.

### Claim 4 (depends on 1)

The cradle device of claim 1, further comprising a speaker operated by an induced electromotive force generated from the antenna of the NFC tag.