Communication navigation system, information server unit and communication terminal unit for the same, and method and program for communication navigation

An information server unit included in a communication navigation system having an information server unit and communication terminal units having identical identification and mounted on a plurality of mobile units for communicating with said information server unit or other communication terminal units via a mobile communication network, wherein only one of said plurality of communication terminal units is assigned as a communication capable terminal capable of communication with said information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is assigned as said communication capable terminal, the communication is performed with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said information server unit comprising:

• switching device which switches an assignment as said communication capable terminal from one of said communication terminal units to said specific communication terminal unit based on start information indicating a start of said specific communication terminal unit, and switches the assignment as said communication capable terminal from said specific communication terminal unit to said one of the communication terminal units based on stop information indicating a stop of said specific communication terminal unit;
• and
• controller which performs communication control on the communication terminal unit assigned as said communication capable terminal and at least controlling a start or an end of navigating operation on said specific communication terminal unit.

A communication terminal unit included in a communication navigation system having an information server unit and communication terminal units having identical identification and mounted on a plurality of mobile units for communicating with said information server unit or other communication terminal units via a mobile communication network, wherein only one of said plurality of communication terminal units is assigned as a communication capable terminal capable of communication with said information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is assigned as said communication capable terminal, the communication is performed with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said communication terminal unit comprising:

• switching device which switches an assignment as said communication capable terminal from one of said communication terminal units to said specific communication terminal unit based on start information indicating a start of said specific communication terminal unit, and switches the assignment as said communication capable terminal from said specific communication terminal unit to said one of the communication terminal units based on stop information indicating a stop of said specific communication terminal unit;
• and
• controller which controls navigating operation with said information server unit based on the communication terminal unit assigned as said communication capable terminal.

A communication navigation method comprising:

• setting processing step of setting only one of a plurality of communication terminal units having identical identification and mounted on a plurality of mobile units for performing the communication via a mobile communication network as a communication capable terminal capable of communication with an information server unit or other communication terminal units based on start information indicating a start of said only one communication terminal unit;
• navigation processing step of, in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is assigned as said communication capable terminal, performing the communication with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted;
• and
• control processing step of performing communication control on the communication terminal unit assigned as said communication capable terminal and at least controlling a start or an end of navigating operation on said specific communication terminal unit.

A communication navigation program for, by means of a computer, assigning only one of a plurality of communication terminal units having identical identification and mounted on a plurality of mobile units for performing the communication via a mobile communication network as a communication capable terminal capable of communication with an information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is set as said communication capable terminal, performing the communication with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said program causing the computer to function as:

• switching means for switching an assignment as said communication capable terminal from one of said communication terminal units to said specific communication terminal unit based on start information indicating a start of said specific communication terminal unit, and switches the assignment as said communication capable terminal from said specific communication terminal unit to said one of the communication terminal units based on stop information indicating a stop of said specific communication terminal unit;
• and
• controlling means for performing communication control on the communication terminal unit assigned set as said communication capable terminal and at least controlling a start or an end of navigating operation on said specific communication terminal unit.

A communication navigation system having an information server unit and communication terminal units having identical identification and mounted on a plurality of mobile units for communicating with said information server unit or other communication terminal units via a mobile communication network, wherein only one of said plurality of communication terminal units is set as a communication capable terminal capable of communication with said information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is set as said communication capable terminal, the communication is performed with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said system comprising:

• setting device which sets one of said communication terminal units as said communication capable terminal based on at least either start information indicating a start of said specific communication terminal unit or stop information indicating a stop hereof;
• and
• controller which performs communication control on the communication terminal unit set as said communication capable terminal and at least controls a start or an end of navigating operation on said specific communication terminal unit,
• wherein said information server unit comprises said setting device and controller, and
• said information server unit comprises:
• detecting device which receives said start information, and on receiving it, detects whether or not there is any other said communication terminal unit set as said communication capable terminal;
• notifying device, in the case where the other communication terminal unit set as said communication capable terminal is detected, which notifies the other communication terminal unit of setting information to the effect that said specific communication terminal unit is set as said communication capable terminal;
• receiving device which receives permission information showing whether or not the setting is permitted from the said other communication terminal unit to said specific communication terminal unit, and
• in the case where said receiving device receives said permission information for permitting said setting, said setting device sets said specific communication terminal unit as said communication capable terminal.

A communication navigation system having an information server unit and communication terminal units having identical identification and mounted on a plurality of mobile units for communicating with said information server unit or other communication terminal units via a mobile communication network, wherein only one of said plurality of communication terminal units is set as a communication capable terminal capable of communication with said information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is set as said communication capable terminal, the communication is performed with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said system comprising:

• setting device which sets one of said communication terminal units as said communication capable terminal based on at least either start information indicating a start of said specific communication terminal unit or stop information indicating a stop hereof;
• and
• controller which performs communication control on the communication terminal unit set as said communication capable terminal and at least controls a start or an end of navigating operation on said specific communication terminal unit,
• wherein said specific communication terminal unit comprises said setting device, and
• said specific communication terminal unit is a vehicle communication terminal unit, and said notifying device notifies said start information based on an engine start of a vehicle on which the vehicle communication terminal unit is mounted.

A communication navigation system having an information server unit and communication terminal units having identical identification and mounted on a plurality of mobile units for communicating with said information server unit or other communication terminal units via a mobile communication network, wherein only one of said plurality of communication terminal units is set as a communication capable terminal capable of communication with said information server unit or other communication terminal units, and in the case where a specific communication terminal unit which is one of said plurality of communication terminal units is set as said communication capable terminal, the communication is performed with said information server unit so as to at least navigate said mobile unit on which the specific communication terminal unit is mounted, said system comprising:

• setting device which sets one of said communication terminal units as said communication capable terminal based on at least either start information indicating a start of said specific communication terminal unit or stop information indicating a stop hereof;
• and
• controller which performs communication control on the communication terminal unit set as said communication capable terminal and at least controls a start or an end of navigating operation on said specific communication terminal unit,
• wherein said specific communication terminal unit comprises said setting device, and
• said specific communication terminal unit is a vehicle communication terminal unit, and said notifying device notifies said stop information based on an engine stop of a vehicle on which the vehicle communication terminal unit is mounted.