Canon Kabushiki Kaisha

Masamichi Tanji

Takashi Okazawa

Makoto Dohi

A technique by which it is possible to prevent a user inputting mistake from occurring when writing, from a communication apparatus (communication terminal) to a wireless communication tag (NFC tag), connection information for connecting to a printing apparatus (image forming apparatus) is provided. The image forming apparatus converts connection information for connecting to the image forming apparatus by a WLAN scheme into a corresponding image pattern, and displays the image pattern on a display unit. A communication terminal photographs the image pattern displayed on the display unit by a camera. The communication terminal restores the corresponding connection information from the image pattern photographed by the camera, and generates NDEF data based on the restored connection information. The communication terminal writes the generated NDEF data to the NFC tag by NFC communication.

Communication system, communication apparatus, method of controlling the same, and storage medium

When a near field communication (NFC) function is set to be enabled, an information processing apparatus starts, upon startup, an operation in a direct wireless communication mode. When the NFC function is set to be disabled, the information processing apparatus starts an operation in the direct wireless communication mode in response to an external operation instruction.

Image forming apparatus with near-field and direct wireless communication

An image forming apparatusthat can prevent an unnecessary deterioration of data transmission performance. The image forming apparatushas a MTU value input screenincluding options representing different MTU values each of which can be selected. When it is determined that a present communication mode is a second communication mode realized without directly connecting the image forming apparatusand the external apparatus, the selected MTU value is set as an acceptable amount of the data to be transmitted in a communication between the image forming apparatusand the external apparatus. When it is determined that the present communication mode is a first communication mode realized by directly connecting the image forming apparatusand the external apparatus, a maximum transmittable amount of the data in the first communication mode is set as the acceptable amount of the data to be transmitted.

Communication apparatus that communicates with another communication apparatus, control method thereof, and storage medium

A communication apparatus that is capable of preventing data erroneous transmission without disturbing communication with a networking device. The communication apparatus is connectable with a plurality of networks including at least a first network and a second network. A specifying unit specifies an IP address of the communication apparatus that is used in communication with an external apparatus on the first network. A determination unit determines an IP address of which a network part is different from a network part of the IP address specified by the specifying unit as an IP address that will be distributed to an external apparatus on the second network. A distribution unit distributes the IP address determined by the determination unit to the external apparatus on the second network.

Communication apparatus capable of preventing data erroneous transmission, control method therefor, and storage medium storing control program therefor

An image forming apparatus equipped with a plurality of service applications for providing respective services, in a state enabling a selected one of the service applications to be automatically started from a terminal apparatus. An image forming apparatus capable of performing printing includes a NFC unit. An NFC controller generates data to be read out by an external apparatus, according to selection of one of a plurality of applications. The NFC controller writes the generated data into the NFC unit.

Image forming apparatus including short-distance wireless communication unit, method of controlling the same, and storage medium

Image forming apparatus with option for disabling near-field communication and direct wireless communication

A communication apparatus to execute a direct wireless communication includes an identification unit, a determining unit, a display unit, and a connection unit. The identification unit identifies, by performing search processing, one device as a communication partner of the direct wireless communication. The determining unit determines whether a user's instruction is needed to establish the direct wireless communication between the one identified device and the communication apparatus. The display unit displays, where a user's instruction is needed, an instruction screen allowing a user to instruct establishing the direct wireless communication. The connection unit performs, where the user has issued the instruction, connection processing to establish the direct wireless communication via the instruction screen. Where the determination unit has determined that the user's instruction is not needed, the connection unit performs the connection processing without the displaying unit displaying the instruction screen.

Communication apparatus, method for controlling communication apparatus, and storage medium

A communication apparatus for performing communication with a communication terminal, and a method of controlling the same. The apparatus performs wireless communication with the communication terminal by a first wireless communication mode and performs wireless communication with the communication terminal by a second wireless communication mode in which either the communication apparatus or the communication terminal becomes an access point. The apparatus receives a switching instruction of communication mode from a user, and determines whether or not the switching of the communication mode in accordance with the received switching instruction is executable, makes a request for an additional instruction to the user when it is determined that it is not executable, and controls the switching of the communication mode in accordance with an additional instruction in response to the request.

Apparatus and method for performing wireless communication with a terminal switching between communication modes

A communication apparatus capable of executing a wireless communication includes an identification unit, a display unit, a notification unit, and a connection unit. The identification unit identifies a communication partner of the wireless communication. The display unit displays, if an external apparatus which is the communication partner of the wireless communication is identified by the identification unit, a confirmation screen for allowing a user to confirm whether to execute the wireless communication with the external apparatus. The notification unit notifies, if the confirmation screen is displayed by the display unit, the external apparatus that the user is confirming whether to execute the wireless communication. The connection unit executes, if the user issues an instruction via the confirmation screen to execute the wireless communication with the external apparatus, connection processing for executing the wireless communication with the external apparatus.

An object of the present invention is to more appropriately filter a packet from an external device. This object is achieved by: obtaining address information of the external device from the packet; judging whether or not the address information of the external device has been registered as filter information; extracting, when it is judged that the address information has not been registered, device discrimination information of the external device from the address information of the external device; judging whether or not address information having the same device discrimination information as the extracted device discrimination information has been registered as the filter information; and registering, when it is judged that the address information having the same device discrimination information has been registered, the address information of the external device as the filter information.

Information processing apparatus communicating with external device via network, and information processing method thereof

If an address-resolution request message is received from a data processing terminal via an interface connected to the data processing terminal, it is determined whether a physical address corresponding to a target network address of the address-resolution request message has already been registered. If it has been registered, then an address-resolution response message containing the corresponding physical address is created and the created message is transferred to a terminal via the interface.

Communication apparatus and communication control method

In a communication system of the present invention, second setting information is automatically generated according to first setting information used for performing predetermined processing between at least two devices when the first setting information is set to a first device of the at least two devices, where the second setting information is generated for a second device of the at least two devices. Then, the communication system transmits the automatically-generated second setting information to the second device. Otherwise, the communication system writes the automatically-generated second setting information onto a portable recording medium so that the second device can read the second setting information from the portable recording medium.

Network configuration setting generation system, device, and method

Address information is requested of a data processing apparatus upon receiving, from the data processing apparatus, data to be transmitted to a network in order to confirm whether an external apparatus is using a specific address. The address information transmitted from the data processing apparatus in response to the request is registered in a communication control apparatus.

Communication control apparatus communicatable with an external apparatus and a controller, and a method of controlling the communication control apparatus

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Kawasaki, Japan

Masamichi Tanji