Patent ID: 6999730

Claim:
A wireless communication terminal which operates in operation modes including an undetermined mode, a master station mode and a slave station mode and is characterized by comprising: an initial detecting section which detects if communication with another wireless communication terminal that operates in the master station mode is possible in case where an operation mode is set to the undetermined mode; a slave-mode setting section which, in case where it is detected by said initial detecting section that communication with another wireless communication terminal which operates in the master station mode is possible, sets the operation mode to the slave station mode registers the another wireless communication terminal as a master terminal and transmits subordination information to the effect that the local is subordinate to the master terminal; a master-mode setting section which sets the operation mode to the master station mode in case where it is detected by said initial detecting section that communication with the another wireless communication terminal which operates in the master station mode is not possible; a slave terminal registration section which registers said another wireless communication terminal as a slave terminal in case where the operation mode is set to the master station mode and subordination information to the effect that the another wireless communication terminal which operates in the master station mode is subordinate to the local is received; a master station maintenance detection section which detects it communication with the another wireless communication terminal registered as the slave terminal is possible when the operation mode is set to the master station mode; a slave station maintenance detection section which detects if communication with the another wireless communication terminal registered as the master terminal is possible when the operation mode is set to the slave station mode; an undetermined-mode setting section which sets the operation mode to the undetermined mode in case where it is detected by said master station maintenance detection section that communication with the another wireless communication terminal registered as the slave terminal is not possible, or in case where it is detected by said slave station maintenance detection section that communication with the another wireless communication terminal registered as the master terminal is not possible or in case where the operation mode is set to the master station mode and no wireless communication terminal is registered as the slave terminal; a transmission section which transmits a message to another wireless communication terminal; and a reception section which receives a message from another wireless communication terminal.