Navigation device and adaptively-controlled communication system
AssigneeMitsubishi Electric Corporation
InventorToshio Kawagishi
Life of this patent
Estimating the term…
Abstract
A navigation device (a vehicle-mounted navigation device 1) is connected, via a mobile communication network 3, to a server 5 by way of a telephone 2 connected thereto via cable 1a or radio 1b, and includes a communication control unit 12 for communicating with the server 5 by using the telephone 2 to measure parameter information about a command support status of the telephone 2 or a communication connection environment, and a main control unit 10 for transmitting the parameter information measured by the communication control unit 12 to an external storage medium 21 or the server 5, and for controlling subsequent communications according to the parameter information transmitted to the external storage medium 21 or the server 5.
Claims11
A navigation device connected, via a mobile communication network, to a server by way of a telephone connected thereto via cable or radio, said navigation device comprising:
- a communication control unit for communicating with said server by using said telephone to measure parameter information about a command support status or communication connection environment of said telephone;
- and
- a main control unit for transmitting the parameter information measured by said communication control unit to an external storage medium or said server, and for controlling subsequent communications according to the parameter information transmitted to said external storage medium or said server,
- wherein:
- when there is a difference between said measured parameter information and the parameter information which has been transmitted to said external storage medium or said server, said communication control unit transmits parameter information corresponding to said difference to said main control unit, and
- said communication control unit specifies a carrier and a communication method to acquire parameter information about said communication connection environment from said external storage medium or said server via said main control unit, and, at a time which a communication connection is started and said communication control unit receives a communication connection request from said main control unit, tries to establish a connection with said telephone according to said acquired parameter information about the communication connection environment, measures, via communications with said server, parameter information about the communication connection environment including at least a connection response time and a number of connections after having succeeded in establishing said connection and making a transition to communications with said telephone, and, when there is a difference between a result of the measurement of said parameter information and said acquired parameter information about the communication connection environment, transmits parameter information corresponding to said difference to said main control unit at a time when said communication control unit fails in communicating with said telephone or the communications are disconnected.
An adaptively-controlled communication system provided with one or more navigation devices each connected, via a mobile communication network, to a server by way of a telephone connected thereto via cable or radio, and an information management device connected to said one or more navigation devices via said mobile communication network,
- wherein:
- said navigation device includes:
- a communication control unit for communicating with said server by using said telephone to acquire parameter information about a command support status or communication connection environment of said telephone from an external storage medium or said server via a main control unit, and for, when there is a difference between said acquired parameter information and parameter information which has been transmitted to said external storage medium or said server by said main control unit, transmitting parameter information corresponding to said difference to said main control unit,
- said main control unit transmits the parameter information acquired by said communication control unit to said information management device, and for controlling subsequent communications according to the parameter information transmitted to said information management device,
- said information management device includes:
- a storage unit for storing the parameter information about the command support status or communication connection environment of said telephone which is transmitted thereto from said navigation device;
- and
- a parameter information transmission controlling unit for updating the parameter information stored in said storage unit in response to an update request from said navigation device, and for transmitting the updated parameter information stored in said storage unit to said navigation device which has made the request in response to a transmission request from said navigation device, and
- said communication control unit specifies a carrier and a communication method to acquire parameter information about said communication connection environment from said external storage medium or said server via said main control unit, and, at a time which a communication connection is started and said communication control unit receives a communication connection request from said main control unit, tries to establish a connection with said telephone according to said acquired parameter information about the communication connection environment, measures, via communications with said server, parameter information about the communication connection environment including at least a connection response time and a number of connections after having succeeded in establishing said connection and making a transition to communications with said telephone, and, when there is a difference between a result of the measurement of said parameter information and said acquired parameter information about the communication connection environment, transmits parameter information corresponding to said difference to said main control unit at a time when said communication control unit fails in communicating with said telephone or the communications are disconnected.
Dependencies are inferred from the claim text.