Wireless power system comprising power transmitter and power receiver and method for receiving and transmitting power of the apparatuses
US-10326309-B2 · Jun 18, 2019 · US
Power transmitting apparatus, control method for power transmitting apparatus, and storage medium
US12456885B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12456885-B2 |
| Application number | US-202217678880-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 23, 2022 |
| Priority date | Aug 29, 2019 |
| Publication date | Oct 28, 2025 |
| Grant date | Oct 28, 2025 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A power transmitting apparatus, in a case where at least one of a transmission power measured in one state from among a plurality of different states or a received power obtained in the one state is unstable, does not use the transmission power and the received power in calculating the parameter used in determining whether or not an object not an intended power transmission target exists.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A communication method for a power transmission apparatus, the communication method comprising: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response or a negative acknowledgement response to the first received power packet based on values indicated by a plurality of Control Error packets received from the power receiving apparatus; transmitting an acknowledgement response or a negative acknowledgement response to the second received power packet based on values indicated by a plurality of Control Error packets received after transmitting an acknowledgement response to the first received power packet; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value. 2 . A communication method for a power transmission apparatus, the communication method comprising: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response to the first received power packet in a case where a value indicated by a Control Error packet received from a power receiving apparatus is a predetermined value; transmitting an acknowledgement response to the second received power packet in a case where a value indicated by a Control Error packet received after transmitting an acknowledgement response to the first received power packet is a predetermined value; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value. 3 . The communication method according to claim 2 , wherein the predetermined value is a value that does not exceed a predetermined threshold. 4 . A power transmission apparatus comprising: a power transmission unit configured to wirelessly transmit power to a power receiving apparatus; and a communication unit configured to communicate with the power receiving apparatus, wherein the communication unit is configured to perform: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response or a negative acknowledgement response to the first received power packet based on values indicated by a plurality of Control Error packets received from the power receiving apparatus; transmitting an acknowledgement response or a negative acknowledgement response to the second received power packet based on values indicated by a plurality of Control Error packets received after transmitting an acknowledgement response to the first received power packet; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value. 5 . A power transmission apparatus comprising: a power transmission unit configured to wirelessly transmit power to a power receiving apparatus; and a communication unit configured to communicate with the power receiving apparatus, wherein the communication unit is configured to perform: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response to the first received power packet in a case where a value indicated by a Control Error packet received from a power receiving apparatus is a predetermined value; transmitting an acknowledgement response to the second received power packet in a case where a value indicated by a Control Error packet received after transmitting an acknowledgement response to the first received power packet is a predetermined value; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value. 6 . A non-transitory computer-readable storage medium storing a program for causing a computer to perform a communication method performed by a power transmission apparatus, the communication method comprising: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response or a negative acknowledgement response to the first received power packet based on values indicated by a plurality of Control Error packets received from the power receiving apparatus; transmitting an acknowledgement response or a negative acknowledgement response to the second received power packet based on values indicated by a plurality of Control Error packets received after transmitting an acknowledgement response to the first received power packet; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value. 7 . A non-transitory computer-readable storage medium storing a program for causing a computer to perform a communication method performed by a power transmission apparatus, the communication method comprising: receiving a plurality of Control Error packets including information for controlling transmission power; receiving a first received power packet including information indicating a value of a first received power; receiving, after receiving the first received power packet, a second received power packet including information indicating a value of a second received power; transmitting an acknowledgement response to the first received power packet in a case where a value indicated by a Control Error packet received from a power receiving apparatus is a predetermined value; transmitting an acknowledgement response to the second received power packet in a case where a value indicated by a Control Error packet received after transmitting an acknowledgement response to the first received power packet is a predetermined value; and, receiving, after transmitting an acknowledgement response to the second received power packet, a third received power packet including information indicating a third received power value.
Assignees
Inventors
Classifications
the cycle being controlled or terminated in response to electric parameters · CPC title
including monitoring or indicating arrangements · CPC title
characterised by the exchange of charge or discharge related data · CPC title
- H02J50/10Primary
using inductive coupling · CPC title
involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12456885B2 cover?
- A power transmitting apparatus, in a case where at least one of a transmission power measured in one state from among a plurality of different states or a received power obtained in the one state is unstable, does not use the transmission power and the received power in calculating the parameter used in determining whether or not an object not an intended power transmission target exists.
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H02J50/10. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 28 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).