Canon Kabushiki Kaisha

Kenichirou Hayashi

Akira Matsuo

Sho Ichikawa

Kento Inai

Hiroshi Moritomo

Hirokazu Izuoka

Sayaka Kumon

Shigeo Aoyagi

An apparatus includes a first authentication unit that performs an authentication process for determining whether an external apparatus is a predetermined external apparatus, a second authentication unit that performs an authentication process for determining whether a battery connected to the external apparatus is a predetermined battery, and a control unit that permits the battery to be discharged but restricts the battery from being charged regardless of whether the battery is the predetermined battery, in a case where the external apparatus is not authenticated as the predetermined external apparatus.

Electronic apparatus and control method

An electronic apparatus connectable to an external electronic apparatus and storing at least one power supply for operating the external electronic apparatus includes a connection interface that is connected to the external electronic apparatus, and at least one processor configured to control the electronic apparatus. Power of the at least one power supply is supplied to the external electronic apparatus via the connection interface. The at least one processor controls the external electronic apparatus by using power received from the external electronic apparatus via the connection interface.

Electronic apparatus and accessory system

An electronic device includes a connection unit and a control unit. The control unit enables a power supply path for supplying power from a first battery connected to an external device to the electronic device and enables a power supply path for supplying power from a second battery connected to the external device to a predetermined functional unit of the external device, in a case where the first battery or the second battery connected to the external device is not charged. The control unit disables a power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enables a power supply path for supplying power from the electronic device to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged.

Electronic device and control method

There is provided a communication apparatus having a first communication unit configured to hold a first communication parameter and share the held first communication parameter with an external apparatus, and a second communication unit configured to perform communication with the external apparatus by using the first communication parameter that the first communication unit shares with the external apparatus. A control unit performs control so that communication by the second communication unit is started in response to sharing of the first communication parameter by the first communication unit. When communication by the second communication unit is to be performed in response to sharing of the first communication parameter by the first communication unit, the control unit puts the first communication parameter, which has been shared with the external apparatus, in a state in which it cannot be shared via the first communication unit.

Communication apparatus and method for controlling communication apparatus

There is provided a communication apparatus. A proximity communication unit is adapted to communicate with an external apparatus by proximity wireless communication. A control unit is configured to control an operation of the communication apparatus. The proximity communication unit provides a notification to the control unit in response to receiving a write request from the external apparatus via the proximity wireless communication. The proximity communication unit does not provide a notification to the control unit in response to receiving a read request from the external apparatus via the proximity wireless communication.

This invention provides a network management apparatus for appropriately managing a photographing network. A plurality of apparatuses including a master apparatus that issues a control command to control a photographic operation and a slave apparatus that executes the control command belong to the photographing network. The network management apparatus preferentially determines, out of the plurality of apparatuses belonging to the photographing network, a master apparatus as a candidate apparatus that becomes a new network management apparatus in a case that the network management apparatus is disconnected from the photographing network managed by the network management apparatus itself.

Network management apparatus and method of controlling the same, and communication apparatus and method of controlling the same

An apparatus receives an address for use in communication with an external apparatus and a lease period of the address. When the apparatus is switched into a state where the amount of electric power provided to the apparatus is reduced, the apparatus determines whether the address is valid based on the lease period of the address. If the address is valid, the apparatus carries out communication using the received address.

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Kawasaki, Japan

Kenichirou Hayashi