Abstract: A communication device acquires information relating to a first access point from a captured first image, and acquires information relating to a second access point from a captured second image. The communication device then starts communication parameter share processing of sharing a communication parameter, required for establishing a wireless network, with respect to the first access point or the second access point. The communication device starts the communication parameter share processing with respect to the second access point in response to reception of a completion notification indicative of completion of the communication parameter share processing with respect to the first access point, from the first access point.

Abstract: Disclosed is a communication apparatus for executing processing for sharing an encryption key between itself and another party's communication apparatus, wherein the communication apparatus executes the processing, respectively at least one time, as an authenticating apparatus and an authenticated apparatus. The communication apparatus determines which encryption key of an encryption key provided by this communication apparatus and an encryption key provided by the other party's communication apparatus is the encryption key used in common by this communication apparatus and the other party's communication apparatus, and decides, in accordance with result of the determination, which of this communication apparatus and the other party's communication apparatus is to be made the authenticating apparatus first.

Abstract: Even when a plurality of communication parameter providing devices exist, a communication parameter setting process is enabled. When a plurality of communication parameter providing devices exist, one of the communication parameter providing devices is determined. For example, all the communication parameter providing devices are caused to stop the providing process. Alternatively, a user is allowed to select a communication parameter providing device. Alternatively, a communication parameter providing device is determined in accordance with a predetermined rule.

Abstract: A communication apparatus operating as an access point of a wireless network displays an image, received a communication parameter from other communication apparatus that read the image, and creates a wireless network using the received communication parameter. Thereafter, the communication apparatus displays an image in response to a user instruction and communicates with other communication apparatuses that have read the image through the wireless network.

Abstract: After a communication apparatus establishes a session with another communication apparatus via a first access point, the communication apparatus stores address information of the communication apparatus and the another communication apparatus, identification information of a service, identification information of the session, and status information of the session. When a condition for switching from the first access point to a second access point occurs, the communication apparatus disconnects from the first access point and connects to the second access point. The communication apparatus then establishes a session with the another communication apparatus via the second access point, using the address information of the communication apparatus and the another communication apparatus, the identification information of the service, the identification information of the session, and the status information of the session stored by a storage unit.

Abstract: According to an instruction for starting processing for connecting to another communication apparatus, a communication apparatus prompts a user to select whether the communication apparatus joins an existing network or establishes a new network, searches another communication apparatus establishing the existing network when the user selects to join the existing network, searches another communication apparatus not establishing the existing network when the user selects to establish the new network, and then connects to the another searched communication apparatus.

Abstract: A communication device acquires information relating to a first access point from a captured first image, and acquires information relating to a second access point from a captured second image. The communication device then starts communication parameter share processing of sharing a communication parameter, required for establishing a wireless network, with respect to the first access point or the second access point. The communication device starts the communication parameter share processing with respect to the second access point in response to reception of a completion notification indicative of completion of the communication parameter share processing with respect to the first access point, from the first access point.

Abstract: A communication device capable of handling, even in the case where requests for provision of a service are received from a plurality of devices, the requests appropriately, is provided. A communication device which provides a service to a service utilizing device which utilizes a service, determines whether or not the communication device is executing a service requested from the service utilizing device. In the case where it is determined that the communication device is executing the service, the communication device makes a response to the request with the contents of the response changed according to whether or not the service is able to be provided to a plurality of service utilizing devices.

Abstract: A communication apparatus includes a search unit that searches for another communication apparatus identified by information obtained from a captured image, a communication parameter control unit that provides another communication apparatus with a communication parameter for performing wireless communication with an access point, and a control unit that, if the information obtained from the captured image conforms to a predetermined format, performs control based on the information obtained from the captured image such that the search unit searches for another communication apparatus identified by the information and the communication parameter control unit provides another communication apparatus detected by the search with the communication parameter, and if the information obtained from the captured image does not conform to the predetermined format, perform control such that the search unit does not search for another communication apparatus and the communication parameter control unit does not provide a

Abstract: A communication apparatus receives information encrypted based on encryption information obtained by capturing an image of code information about the communication information from a different communication apparatus operating as an access point to form a wireless network. The communication apparatus and the different communication apparatus perform encrypted communication based on the information.

Abstract: A communication device capable of handling, even in the case where requests for provision of a service are received from a plurality of devices, the requests appropriately, is provided. A communication device which provides a service to a service utilizing device which utilizes a service, determines whether or not the communication device is executing a service requested from the service utilizing device. In the case where it is determined that the communication device is executing the service, the communication device makes a response to the request with the contents of the response changed according to whether or not the service is able to be provided to a plurality of service utilizing devices.

Abstract: A communication apparatus includes a search unit that searches for another communication apparatus identified by information obtained from a captured image, a communication parameter control unit that provides another communication apparatus with a communication parameter for performing wireless communication with an access point, and a control unit that, if the information obtained from the captured image conforms to a predetermined format, performs control based on the information obtained from the captured image such that the search unit searches for another communication apparatus identified by the information and the communication parameter control unit provides another communication apparatus detected by the search with the communication parameter, and if the information obtained from the captured image does not conform to the predetermined format, perform control such that the search unit does not search for another communication apparatus and the communication parameter control unit does not provide a

Abstract: A communication apparatus functioning as a master device denies participation by new communication apparatuses in a network in communication parameter configuration mode based on participation statuses of communication apparatuses functioning as slave devices in the network. The communication apparatus functioning as a master device establishes the network in communication parameter configuration mode between the communication apparatuses participating in the network, and configures communication parameters.

Abstract: A communication device acquires information relating to a first access point from a captured first image, and acquires information relating to a second access point from a captured second image. The communication device then starts communication parameter share processing of sharing a communication parameter, required for establishing a wireless network, with respect to the first access point or the second access point. The communication device starts the communication parameter share processing with respect to the second access point in response to reception of a completion notification indicative of completion of the communication parameter share processing with respect to the first access point, from the first access point.

Abstract: A communication apparatus includes a first notification unit, a second notification unit, a reception unit, and a sharing unit. The first notification unit provides first information containing information unique to the communication apparatus and information on a predetermined channel for use in sharing a communication parameter for wireless communication with a different communication apparatus. The second notification unit provides second information containing the information unique to the communication apparatus but not containing information on the predetermined channel. When the first information is provided, the reception unit waits to receive a predetermined signal containing information corresponding to the information unique to the communication apparatus without shifting to another channel. When the second information is provided, the reception unit waits to receive the predetermined signal using a plurality of channels.

Abstract: A communication apparatus operating as an access point of a wireless network displays an image, received a communication parameter from other communication apparatus that read the image, and creates a wireless network using the received communication parameter. Thereafter, the communication apparatus displays an image in response to a user instruction and communicates with other communication apparatuses that have read the image through the wireless network.

Abstract: A communication apparatus functioning as a master device denies participation by new communication apparatuses in a network in communication parameter configuration mode based on participation statuses of communication apparatuses functioning as slave devices in the network. The communication apparatus functioning as a master device establishes the network in communication parameter configuration mode between the communication apparatuses participating in the network, and configures communication parameters.

Abstract: A communication apparatus starts short distance wireless communication with another communication apparatus while joining a wireless LAN created by an external access point (AP) as a station, determines whether the communication apparatus can concurrently perform a station function and an AP function of the wireless LAN in accordance with the start of the short distance wireless communication, directly connects to the other communication apparatus by the wireless LAN by disconnecting from the external AP when it is not determined that the station function and the AP function can be concurrently performed, reconnects to the external AP as the station when the direct connection fails, and directly connects to the other communication apparatus by the wireless LAN without disconnecting from the external AP when it is determined that the station function and the AP function can be performed concurrently.

Abstract: When a communication device detects another communication device operating as a providing device that provides a communication parameter and when a communication parameter has already been set between the communication device and a different communication device or when the communication device is participating in the same network as that in which the different communication device is present, the communication device transmits a session overlap notice to the detected communication device.

Abstract: A communication apparatus includes a search unit that searches for another communication apparatus identified by information obtained from a captured image, a communication parameter control unit that provides another communication apparatus with a communication parameter for performing wireless communication with an access point, and a control unit that, if the information obtained from the captured image conforms to a predetermined format, performs control based on the information obtained from the captured image such that the search unit searches for another communication apparatus identified by the information and the communication parameter control unit provides another communication apparatus detected by the search with the communication parameter, and if the information obtained from the captured image does not conform to the predetermined format, perform control such that the search unit does not search for another communication apparatus and the communication parameter control unit does not provide a