Abstract: A radio communication module 10 includes: a radio communicator 12 configured to perform radio communication; a storage 14 configured to store set information that sets operation relating to radio communication; and a controller 13 configured to stop at least transmission operation of the radio communicator 12 or change at least a part of set information accorded to a specification of a communication carrier of a first country, when it is set so as to operate by using the set information accorded to the specification of the communication carrier of the first county and the radio communication module 10 locates in a second country different to the first country.

Abstract: A radio communication module 10 includes: a radio communicator 12 configured to perform radio communication; a storage 14 configured to store set information that sets operation relating to radio communication; and a controller 13 configured to stop at least transmission operation of the radio communicator 12 or change at least a part of set information accorded to a specification of a communication carrier of a first country, when it is set so as to operate by using the set information accorded to the specification of the communication carrier of the first county and the radio communication module 10 locates in a second country different to the first country.

Abstract: A screw fastening method includes reversely rotating a shaft part of a fastening tool in a direction of loosening one of an external thread and an internal thread, which is engaged with the shaft part, while one of the external thread in a non-screwed state and the internal thread in a non-screwed state, which is engaged with the shaft part, is pressed against the other thread, detecting collisions between thread ridges of the external thread and the internal thread using a sensor while the shaft part remains rotated reversely, determining whether or not a time interval between collisions detected by the sensor matches a theoretical cycle of collisions calculated from rotation speed of the shaft part, and fastening the external thread and the internal thread to each other by normally rotating the shaft part when it is determined that the time interval matches the theoretical cycle.

Abstract: A screw fastening method includes reversely rotating a shaft part of a fastening tool in a direction of loosening one of an external thread and an internal thread, which is engaged with the shaft part, while one of the external thread in a non-screwed state and the internal thread in a non-screwed state, which is engaged with the shaft part, is pressed against the other thread, detecting collisions between thread ridges of the external thread and the internal thread using a sensor while the shaft part remains rotated reversely, determining whether or not a time interval between collisions detected by the sensor matches a theoretical cycle of collisions calculated from rotation speed of the shaft part, and fastening the external thread and the internal thread to each other by normally rotating the shaft part when it is determined that the time interval matches the theoretical cycle.

Abstract: A communication system includes: a communication device configured to operate various functions using software programs stored in a software storage unit; a management server device configured to send an updating software program corresponding to one of the software programs; an operation information obtaining unit configured to obtain operation information of the software programs in the communication device; a determination unit configured to determine a software program that needs updating among the software programs based on the operation information obtained by the operation information obtaining unit; and an updating unit configured to replace the software program that is stored in the software storage unit and determined by the determination unit to need updating with the updating software program.

Abstract: A communication system includes: a communication device configured to operate various functions using software programs stored in a software storage unit; a management server device configured to send an updating software program corresponding to one of the software programs; an operation information obtaining unit configured to obtain operation information of the software programs in the communication device; a determination unit configured to determine a software program that needs updating among the software programs based on the operation information obtained by the operation information obtaining unit; and an updating unit configured to replace the software program that is stored in the software storage unit and determined by the determination unit to need updating with the updating software program.