Canon Kabushiki Kaisha

Tomoki Hiramatsu

Takahiro Shichino

Kazuo Moritomo

Hajime Shimura

Hajime Iwase

A power transmission apparatus performs wireless power transmission to a power receiving apparatus using at least one of a plurality of coils including a first coil and a second coil disposed at a position closer to the first coil than a position separated from the first coil by a specific distance, and perform object detection by outputting one or more signal for object detection from one or more of the plurality of coils. Signals for object detection are not outputted at a same time from the first coil and the second coil.

Power transmission apparatus, control method of power transmission apparatus, and storage medium

A power transmission apparatus includes a first power transmission unit configured to perform wireless power transmission to a power receiving apparatus in a first region by using at least one of a plurality of coils, a second power transmission unit configured to perform wireless power transmission to a power receiving apparatus in a second region by using at least one of the plurality of coils. In a case where, while the first power transmission unit performs wireless power transmission to a first power receiving apparatus in a common region where the first region and the second region overlap, a second power receiving apparatus is placed in a region of the first region other than the common region, the first power transmission unit stops the wireless power transmission to the first power receiving apparatus and the second power transmission unit performs wireless power transmission to the first power receiving apparatus.

A power transmission apparatus wirelessly transmits power to a power reception apparatus, transmits a signal including information for use in identification of the presence probability of a foreign object to the power reception apparatus. In a case where the presence probability of the foreign object is smaller than a threshold, the power transmission apparatus transmits information for use in identification of the presence probability of the foreign object and information about a request for a process related to reacquisition of a parameter to be used to determine a presence probability of the foreign object, and in a case where the presence probability of the foreign object is greater than the threshold, the power transmission apparatus transmits information for use in identification of the presence probability of the foreign object without the information about a request for the process related to reacquisition of the parameter.

Power transmission apparatus and power reception apparatus

A power receiving apparatus for receiving power transmitted by wireless power transmission from a power transmitting apparatus, comprises a first communication unit for communicating with the power transmitting apparatus, and a second communication unit for performing communication at a speed higher than the first communication unit. The power receiving apparatus determines, by communication via the first communication unit, whether the power transmitting apparatus has a function of transmitting/receiving, via the second communication unit, information for device authentication with the power transmitting apparatus, and enables the second communication unit to execute transmission/reception of the information for the device authentication with the power transmitting apparatus via the second communication unit if it is determined that the power transmitting apparatus has the function and the second communication unit is in a disabled state.

Power receiving apparatus, power transmitting apparatus, control methods thereof, and non-transitory computer-readable storage medium

A power transmission apparatus configured to wirelessly transmit power to a power reception apparatus executes, when wirelessly transmitting power, detection processing for detecting an object different from the power reception apparatus, using a power loss, obtains, from the power reception apparatus, reference value information regarding a reference value of received power used to obtain the power loss, and performs a specific control after the power loss has been obtained and in a case where a predetermined time has elapsed since a predetermined timing associated with a timing at which information is obtained from the power reception apparatus, without obtaining the reference value information that is valid, the specific control being a control to prevent a power transmission output from being increased, regardless of received power in the power reception apparatus.

Power transmission apparatus, control method, and computer-readable storage medium

A power transmitting apparatus measures a Q factor of a power transmitting unit that performs wireless power transfer to a power receiving apparatus, and determines presence/absence of an object different from the power receiving apparatus based on the Q factor. The power transmitting apparatus obtains a first index value regarding a predetermined physical amount different from the Q factor after measurement of the Q factor, obtains a second index value regarding the predetermined physical amount before wireless power transfer to the power receiving apparatus starts after the it is determined in the above determination that an object different from the power receiving apparatus does not exist; and determines presence/absence of an object different from the power receiving apparatus based on the first index value and the second index value.

Power transmitting apparatus, power receiving apparatus, control methods thereof, and storage medium

A power transmitting apparatus () derives data corresponding to a reference for power loss between the power transmitting apparatus () and a power receiving apparatus () on a basis of a value of reception power received from the power receiving apparatus; and performs a foreign object detection based on the data corresponding to the reference for power loss. The power transmitting apparatus () re-derives the data corresponding to the reference for power loss, when a change in the power transmission and reception state is detected in a power-transmittal range of the power transmitting apparatus ().

Power transmitting apparatus, control method for power transmitting apparatus, and storage medium

A communication apparatus includes a sharing unit configured to share a communication parameter for wireless communication with another communication apparatus with the another communication apparatus, a connection unit configured to connect to the another communication apparatus using the communication parameter shared by the sharing unit, a communication unit configured to, after connection with the another apparatus by the connection unit, communicate with the another communication apparatus by utilizing a predetermined function, and a control unit configured to control the communication parameter shared by the sharing unit according to a result of communication by the communication unit utilizing the predetermined function.

Communication apparatus, control method thereof, and storage medium

The present invention provides a technique that, in the case where a first radio communication unit has acquired device information, and the execution of a service has started, makes it possible to detect the stopping of execution of the service by a second radio communication unit. To achieve this, device information regarding another communication apparatus is acquired via the first radio communication unit, and if a predetermined service is being executed with the other communication apparatus based on the acquired device information, a predetermined signal indicating stopping of the predetermined service is detected via the second radio communication unit that is different from the first radio communication unit. If the predetermined signal is detected, processing for stopping the predetermined service is performed.

Communication apparatus, control method for the same and non-transitory computer-readable storage medium

A communication apparatus includes a conversion unit configured to convert data, an estimation unit configured to estimate a size after conversion of the data by the conversion unit before the conversion unit converts the data, and a notification unit configured to notify another communication apparatus of the size estimated by the estimation unit.

Communication apparatus, method for controlling communication apparatus, and program

A communication apparatus stores a plurality of pieces of image data including grouped image data. The communication apparatus transmits, to another communication apparatus, information of representative image data out of the grouped image data, and information indicating a number of pieces of image data contained in the group, in response to a request from the other communication apparatus.

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Tokyo, Japan

Tomoki Hiramatsu