Communication device and method for controlling communication device

摘要

A communication device including: a setting portion that sets the communication device as a main device when communication device is connected to another device and receives an electric power from an external power supply, and sets communication device as a client device when communication device is connected to another device and receives an electric power from another device; an update portion that transmits first and second identifiers to another device, receives from another device third and fourth identifiers, forms a network to which communication device and another device belong with second identifier when communication device is set as the main device, and updates second identifier with fourth identifier when communication device is set as the client device; and a wireless communication portion that, when another device is disconnected from communication device, communicates wirelessly with another device with first and third identifiers, and any one of second and fourth identifiers.

主权项

1. A communication device comprising:
a storage that stores first identification information for identifying a communication device and second identification information for identifying a network to which the communication device belongs; a connection portion that connects with another communication device by a cable; a first setting portion that sets the communication device as a main device when the communication device is connected to the another communication device and receives an electric power from a first external power supply, and sets the communication device as a client device when the communication device is connected to the another communication device and receives an electric power from the another communication device; an update portion that transmits the first identification information and the second identification information to the another communication device, receives from the another communication device third identification information for identifying the another communication device and fourth identification information for identifying a network to which the another communication device belongs, forms a network to which the communication device and the another communication device belong with the second identification information when the communication device is set as the main device, and updates the second identification information with the received fourth identification information when the communication device is set as the client device; and a wireless communication portion that, when the another communication device is disconnected from the communication device, communicates wirelessly with the another communication device with the first identification information, the third identification information and any one of the second identification information and the fourth identification information.