# US 12,119,676 B2 · Power transmitting apparatus, method of controlling the same, and power transmission system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,119,676 B2
- Document ID: US12119676B2
- Status: Granted
- Kind: B2
- Application number: 18/140,719
- Filed: 2023-04-28
- Published: 2023-08-24
- Granted: 2024-10-15
- Earliest claimed: 2013-04-19
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Takahiro Shichino
- Web page: https://patentgrep.com/patent/US12119676B2

## CPC

- H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
- H02J 7/47: Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
- H02J 50/12: of the resonant type
- H02J 50/60: responsive to the presence of foreign objects, e.g. detection of living beings
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

Foreign substance detection can be performed with a simple configuration in a power transmission system. A power transmitting apparatus that wirelessly transmits power to a power receiving apparatus, the power transmitting apparatus comprises: determination means for, in a case where an initial impedance value and the detected output impedance value do not match and there is no change in the output impedance value between before and after the transmission of a predetermined detection signal, determining that a foreign substance is present within a predetermined power transmission range, and, in a case where the initial impedance value and the detected output impedance value do not match and there is a change in the output impedance value between before and after the transmission of the predetermined detection signal, determining that a power receiving apparatus is present within the predetermined power transmission range.

## Claims

### Claim 1

A power transmitting apparatus comprising:
an antenna configured to wirelessly transmit power to a power receiving apparatus; and
one or more processors configured to:
receive, using a first communication method, a first signal including address information of a power receiving apparatus;
receive, using a second communication method, a second signal including address information of a power receiving apparatus; and
transmit a third signal, using the second communication method, in a case where the address information included in the second signal is the same as the address information included in the first signal.

### Claim 2 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the address information is a BLUETOOTH® address.

### Claim 3 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the address information is a MAC address.

### Claim 4 (depends on 1)

The power transmitting apparatus according to claim 1, wherein a parameter is communicated with the power receiving apparatus using the second communication method after the third signal is transmitted.

### Claim 5 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the second communication method is a communication method according to BLUETOOTH® standard.

### Claim 6 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the first communication method is a communication method using load modulation between the power transmitting apparatus and the power receiving apparatus.

### Claim 7 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the third signal comprises a random number.

### Claim 8 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the third signal is a signal to establish a communication connection.

### Claim 9 (depends on 1)

The power transmitting apparatus according to claim 1, wherein the address information is information to identify the power receiving apparatus.

### Claim 10

A communication method of a power transmitting apparatus configured to wirelessly transmit power to a power receiving apparatus, the method comprising:
receiving, using a first communication method, a first signal including address information of the power receiving apparatus;
receiving, using a second communication method, the second signal including address information of the power receiving apparatus; and
transmitting a third signal, using the second communication method, in a case where the address information included in the second signal is the same as the address information included in the first signal.

### Claim 11

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a communication method of a power transmitting apparatus configured to wirelessly transmit power to a power receiving apparatus, the method comprising:
receiving, using a first communication method, a first signal including address information of the power receiving apparatus;
receiving, using a second communication method, the second signal including address information of the power receiving apparatus; and
transmitting a third signal, using the second communication method, in a case where the address information included in the second signal is the same as the address information included in the first signal.