公开(公告)号：US12207328B2

公开(公告)日：2025-01-21

申请号：US18438756

申请日：2024-02-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H04W76/14 ,  H02J50/10 ,  H02J50/80 ,  H04W4/80 ,  H04W76/10

Abstract: A power receiving apparatus, which has a first communication function and a second communication function, controls the first communication function to receive a first signal including information representing whether a power transmission apparatus can execute control communication using a second method, controls, based on the information representing that the power transmission apparatus can execute the control communication using the second method, the first communication function to transmit, to the power transmission apparatus, a second signal to request identification information of the power transmission apparatus for the communication of the second method and receive the identification information from the power transmission apparatus, and determines which one of the first communication function and a second communication function should be used for the control communication, based on the first signal and whether the identification information is received.

公开(公告)号：US20240146117A1

公开(公告)日：2024-05-02

申请号：US18409671

申请日：2024-01-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H02J50/60 ,  H02J50/12 ,  H02J50/80

CPC classification number: H02J50/60 ,  H02J50/12 ,  H02J50/80

Abstract: A power transmitting apparatus sets, on the basis of transmission power set with the power receiving apparatus, a first threshold for determining whether or not a foreign object exist, and a second threshold lower than the first threshold. The first and second threshold are set so that the difference between the first and second threshold values becomes larger as the set transmission power becomes larger. The power transmitting apparatus determines: that a foreign object exists in a case where the power loss is greater than the first threshold; that a foreign object does not exist in a case where the power loss is less than the second threshold; and that there is a possibility of a foreign object existing in a case where the power loss is between the first threshold and the second threshold.

公开(公告)号：US11937315B2

公开(公告)日：2024-03-19

申请号：US18069617

申请日：2022-12-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H04W76/14 ,  H02J50/10 ,  H02J50/80 ,  H04W4/80 ,  H04W76/10

CPC classification number: H04W76/14 ,  H02J50/10 ,  H02J50/80 ,  H04W4/80 ,  H04W76/10

Abstract: A power receiving apparatus, which has a first communication function and a second communication function, controls the first communication function to receive a first signal including information representing whether a power transmission apparatus can execute control communication using a second method, controls, based on the information representing that the power transmission apparatus can execute the control communication using the second method, the first communication function to transmit, to the power transmission apparatus, a second signal to request identification information of the power transmission apparatus for the communication of the second method and receive the identification information from the power transmission apparatus, and determines which one of the first communication function and a second communication function should be used for the control communication, based on the first signal and whether the identification information is received.

公开(公告)号：US20230370116A1

公开(公告)日：2023-11-16

申请号：US18359794

申请日：2023-07-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H04B5/00 ,  H02J50/10 ,  H04W52/00

CPC classification number: H04B5/0037 ,  H02J50/10 ,  H04B5/0093 ,  H04B5/0031 ,  H04W52/00 ,  H02J50/80

Abstract: A power transmission apparatus has a first communication function for communicating with a power reception apparatus and a second communication function for communicating with the power reception apparatus at a radio frequency different from a radio frequency used in the first communication function, and makes a decision as to whether to use the first communication function or the second communication function in communication for controlling wireless transmission of power, the decision being made on the basis of device information obtained from the power reception apparatus through communication using the first communication function.

公开(公告)号：US20230124614A1

公开(公告)日：2023-04-20

申请号：US17887070

申请日：2022-08-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/60 ,  G01V3/10

Abstract: A power transmission apparatus 100 wirelessly transmits power to a power receiving device 102 via a power transmission coil 304, measures a Q factor of the power transmission coil 304 in the time domain, and determines presence or absence of an object (foreign object) different from the power receiving apparatus 102 based on the Q factor measured in the time domain and a reference value of the Q factor which is based on information obtained from the power receiving apparatus 102.

公开(公告)号：US11502556B2

公开(公告)日：2022-11-15

申请号：US17343505

申请日：2021-06-09

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/23 ,  H04W76/14 ,  H04W4/80

Abstract: A control unit 201 of a power receiving apparatus 200 performs a predetermined communication to a power transmitting apparatus 100 via a first communication unit 204 such that power transfer from the power transmitting apparatus 100 is continued, in a case where a control communication using the first communication unit 204 is switched to a control communication using a second communication unit 202.

公开(公告)号：US20210296944A1

公开(公告)日：2021-09-23

申请号：US17343505

申请日：2021-06-09

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H02J50/80 ,  H04W4/80 ,  H02J50/23 ,  H04B5/00 ,  H04W76/14

Abstract: A control unit 201 of a power receiving apparatus 200 performs a predetermined communication to a power transmitting apparatus 100 via a first communication unit 204 such that power transfer from the power transmitting apparatus 100 is continued, in a case where a control communication using the first communication unit 204 is switched to a control communication using a second communication unit 202.

公开(公告)号：US11005297B2

公开(公告)日：2021-05-11

申请号：US16371360

申请日：2019-04-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H02J7/02 ,  H02J50/12 ,  H02J50/80 ,  H02J50/60 ,  H02J7/00

Abstract: A power receiving apparatus for wirelessly receiving a power from a power transmission apparatus that uses a power supplied from a power supply apparatus is provided. The power receiving apparatus obtains, from the power transmission apparatus, a result of first device authentication between the power supply apparatus and the power transmission apparatus, performs second device authentication for the power transmission apparatus, and performs a negotiation concerning a transmission power with the power transmission apparatus based on the result of the first device authentication and a result of the second device authentication.

公开(公告)号：US10581280B2

公开(公告)日：2020-03-03

申请号：US15901998

申请日：2018-02-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino

IPC: H02J50/40 ,  H02J50/80 ,  H02J50/60 ,  H02J7/02 ,  H02J1/14 ,  H02J5/00 ,  H04W52/36 ,  H04W72/04 ,  H02J50/10

Abstract: A power transmitting apparatus includes a power transmitting unit configured to perform wireless power transmission in any of a plurality of states including (i) a first state in which output power is wirelessly transmitted to a power receiving apparatus and (ii) a second state in which wireless power transmission using output power that is smaller than output power in the first state is performed. The apparatus also includes a detector configured to detect an object, and a communicator configured to communicate a control signal for wireless power transmission. Further, a controller is configured to control the power transmitter so as to perform power transmission in the first state to the power receiving apparatus detected by the detector and configured to control the power transmitter so as to perform power transmission in the second state in accordance with communication by the communicator when power transmission in the first state is performed.

公开(公告)号：US09954582B2

公开(公告)日：2018-04-24

申请号：US14244380

申请日：2014-04-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Shichino ,  Tadashi Eguchi

IPC: H04B5/00 ,  H03F1/02 ,  H03F3/217 ,  H03F3/24

CPC classification number: H04B5/0037 ,  H02J50/12 ,  H02J50/80 ,  H03F1/0244 ,  H03F3/217 ,  H03F3/24

Abstract: A power transmitting apparatus that performs power transmission to a power receiving apparatus includes an amplifier including a switching element, receives a load power amount from the power receiving apparatus, detects a value for evaluating the efficiency of the amplifier, and based on the load power amount and the detected value for evaluating the efficiency, increases or reduces a voltage that is to be supplied to the amplifier.