A communication device includes a communication unit, a communication function allocation unit, a communication status determination unit, and a communication control unit. The communication unit performs communications with another communication device using a plurality of communication paths. The communication function allocation unit allocates communication functions to each of the communication paths in the communication unit. The communication status determination unit determines a communication status for each of the communication paths. The communication control unit controls communications for each of the communication paths in accordance with allocation by the communication function allocation unit and a determination result of the communication status determination unit.

A printing device has a print unit for printing on roll paper; a wireless communication unit for communicating wirelessly with a paired control device; and a controller for receiving print data by wireless communication from the control device, and controlling the print unit based on the received print data. When changing from a pairing-disabled mode to a pairing-enabled mode, the controller controls the print unit to print pairing-related information on roll paper, does not process pairing in the pairing-disabled mode, and processes pairing when a pairing request is received in the pairing-enabled mode.

A terminal device stores, without accepting user input of predetermined connection information, predetermined connection information without acquiring the predetermined connection information from a communication device, connects to the communication device using the stored predetermined connection information, and communicates with the communication device using the predetermined connection information.

A communication apparatus has a communication function which can concurrently perform first communication via another apparatus and second communication not via the other apparatus. When an error related to the second apparatus occurs while no error related to the first communication has occurred in a state in which the first communication and the second communication are concurrently performed, the communication apparatus stops the second communication without performing reactivation automatically.

A control method of an information processing device that communicates with a communication device includes accepting a connection processing instruction to connect the communication device with at least one external device, and performing processing to execute newly, in a case that the connection processing instruction is accepted and the communication device is not connected to any external device, the connection processing.

A mobile terminal that communicates with an image processing apparatus including a scanning function includes a display unit that displays a screen, a first instruction unit that, when the display unit displays a specific screen corresponding to the scanning function, instructs the image processing apparatus to activate a specific application corresponding to the scanning function, and a second instruction unit that, when the mobile terminal receives an instruction to perform the scanning function, instructs the image processing apparatus to perform the scanning function.

In a system in which communication between an information processing apparatus and a printing apparatus is possible, the information processing apparatus detects that communication with the printing apparatus has become possible and, in response to detection that such communication has become possible, generates print data based upon data that the information processing apparatus is displaying on a display unit connected to or built in the information processing apparatus, and transfers the generated print data to the printing apparatus. The printing apparatus prints the data received from the information processing apparatus.

This invention relates to an imaging apparatus and an imaging method for supplying an optimum amount of image data to another apparatus. When a PDA 91 has a maximum transfer rate of 1.5 Mbps, a mobile phone 1 determines that a maximum speed of communication with the PDA 91 is low, reduces accordingly the amount of moving image data captured by a CCD of the mobile phone, and supplies the captured moving image data to the PDA 91. The PDA 91 displays a low-quality moving image 93 on its display unit. When the PDA 91 has a maximum transfer rate of 480 Mbps, the CPU of the mobile phone leaves unchanged the amount of moving picture data captured by the CCD and supplies the captured moving image data to the PDA 91. The PDA 91 then displays a high-quality moving image 94 on the display unit. This invention applies advantageously to digital cameras.

A communication device may receive any one signal among two or more types of signals from a target device, receive format information from the target device, receive a specific signal including information described in the predetermined format from the target device in a case where the format information indicates that the target device supports the predetermined format, determine whether or not related information related to a predetermined application software is included in the specific signal, and execute an authentication of the target device by using first identification information included in the specific signal in a case where it is determined that the related information is included in the specific signal, wherein the authentication of the target device by using information included in the specific signal is not executed in a case where it is determined that the related information is not included in the specific signal.

A control method of an information processing device that communicates with a communication device includes accepting a connection processing instruction to connect the communication device with at least one external device, and performing processing to execute newly, in a case that the connection processing instruction is accepted and the communication device is not connected to any external device, the connection processing.