# US 10,374,469 B2 · Wireless power receiver, wireless power supply system, and wireless power reception method

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- Number: US 10,374,469 B2
- Document ID: US10374469B2
- Status: Granted
- Kind: B2
- Application number: 15/717,817
- Filed: 2017-09-27
- Published: 2018-03-29
- Granted: 2019-08-06
- Earliest claimed: 2016-09-29
- Assignees: Lapis Semiconductor Co., Ltd.
- Applicants: Lapis Semiconductor Co., Ltd.
- Inventors: Hiroji Akahori; Takashi Taya
- Web page: https://patentgrep.com/patent/US10374469B2

## CPC

- H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
- G11C 5/142: {Contactless power supplies, e.g. RF, induction, or IR}
- G11C 16/10: Programming or data input circuits
- G11C 16/102: {External programming circuits, e.g. EPROM programmers; In-circuit programming or reprogramming; EPROM emulators}
- G11C 16/225: {Preventing erasure, programming or reading when power supply voltages are outside the required ranges}
- G11C 16/30: Power supply circuits
- G11C 16/3459: {Circuits or methods to verify correct programming of nonvolatile memory cells}
- G11C 17/16: using electrically-fusible links
- G11C 17/18: Auxiliary circuits, e.g. for writing into memory
- G11C 29/027: {in fuses}
- H02J 50/10: using inductive coupling
- G11C 2029/0407: {on power on}
- G11C 2029/4402: {Internal storage of test result, quality data, chip identification, repair information}
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G11C: STATIC STORES (semiconductor memory devices H10B)

## Abstract

The present disclosure provides a wireless power receiver including: a power receiver configured to receive electrical power that is wirelessly transmitted from a wireless power transmitter; a power reception-side communication section configured to wirelessly communicate with the wireless power transmitter; a storage section to which data received by the power reception-side communication section is written by using the electrical power received by the power transmitter; and a monitoring section configured to monitor the electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the data is being written to the storage section, the monitoring section transmits write information, which indicates whether or not the data was correctly written to the storage section based on a monitoring result, from the power reception-side communication section to the wireless power transmitter information.

## Claims

### Claim 1

A wireless power receiver comprising:
a power receiver configured to receive electrical power that is wirelessly transmitted from a wireless power transmitter;
a power reception-side communication section configured to wirelessly communicate with the wireless power transmitter;
a storage section to which data received by the power reception-side communication section is written by using the electrical power received by the power transmitter; and
a monitoring section configured to monitor the electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the data is being written to the storage section, the monitoring section transmits write information, which indicates whether or not the data was correctly written to the storage section based on a monitoring result, from the power reception-side communication section to the wireless power transmitter information.

### Claim 2 (depends on 1)

The wireless power receiver of claim 1, wherein the monitoring section stores in the storage section, a combination of information indicating whether or not data was correctly written to the storage section and predetermined information, as the write information, and the monitoring section transmits from the power reception-side communication section to the wireless power transmitter the write information read from the storage section.

### Claim 3 (depends on 1)

The wireless power receiver of claim 1, wherein the monitoring section determines that the data was correctly written to the storage section in a case in which electrical power supplied to the storage section is equal to or greater than a predetermined electrical power, or in cases in which a voltage that corresponds to the electrical power supplied to the storage section is equal to or greater than a predetermined voltage.

### Claim 4 (depends on 1)

The wireless power receiver of claim 1, wherein the monitoring section includes a comparator that outputs a comparison result of comparing a voltage according to electrical power supplied to the storage section with a predetermined voltage.

### Claim 5

A wireless power supply system comprising a wireless power transmitter and a wireless power receiver, wherein:
the wireless power receiver includes
a power receiver configured to receive electrical power that is wirelessly transmitted from a wireless power transmitter,
a power reception-side communication section configured to wirelessly communicate with the wireless power transmitter,
a storage section to which data received by the power reception-side communication section is written by using the electrical power received by the power transmitter, and
a monitoring section configured to monitor the electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the data is being written to the storage section, to store, in the storage section, a combination of a monitoring result and predetermined information, as monitoring information, and to transmit the monitoring information that has been read from the storage section to the wireless power transmitter from the power reception-side communication section; and
the wireless power transmitter includes
a power transmission section configured to wirelessly transmit electrical power to the wireless power receiver,
a transmission-side communication section configured to wirelessly perform communication with the wireless power receiver, and
a controller configured to control transmission of the data from the transmission-side communication section, and to determine whether or not the data is correctly written to the storage section based on the monitoring result obtained from the monitoring information received by the transmission-side communication section.

### Claim 6

A wireless power reception method comprising:
wirelessly receiving electrical power transmitted from a wireless power transmitter;
performing wireless communication with the wireless power transmitter;
writing received data to a storage section using the received electrical power;
monitoring electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the received data is being written to the storage section; and
transmitting a monitoring result to the wireless power transmitter.
