Information providing method, information providing system, and information providing center and on-vehicle device constituting the information providing system

An on-vehicle device constituting an information providing system which provides a vehicle with information to assist driving the vehicle via a road-to-vehicle communication, comprising:

• a reception part configured to receive a dynamic information, the information providing center having a first static information that is individually version-controlled in a database at the information providing center and transmitting the dynamic information, the dynamic information referring to the first static information and including a version information of the first static information;
• a storage part configured to store a second static information that is individually version-controlled in a database at the on-vehicle device, corresponding to the first static information;
• and
• a service content determining part configured to determine a content of a drive assist service to be implemented by using the dynamic information, based on the version information of the first static information and a version information of the second static information,
• wherein a content of the first static information corresponds to a content of the second static information, and the content of the first static information is identical to the content of the second static information if the version information of the first static information matches the version information of the second static information,
• wherein, if the version information of the first static information is newer than the version information of the second static information, or if the second static information corresponding to the first static information does not exist, the service content determining part implements the drive assist service, not by combining the dynamic information with the content of the second static information corresponding to the content of the first static information, but by combining the dynamic information with a static information generated by adding a predetermined information pre-stored in the on-vehicle device to the content of the second static information or by combining the dynamic information with a predetermined information pre-stored in the on-vehicle device which is different from the content of the second static information.

An information providing center constituting an information providing system which provides a vehicle with information to assist driving the vehicle via a road-to-vehicle communication, comprising:

• a storage part configured to store a first static information that is individually version-controlled in a database at the information providing center;
• a service information generating part configured to generate a dynamic information referring to the first static information and including a version information of the first static information;
• and
• a transmission part configured to transmit the dynamic information to an on-vehicle device having a second static information, that is individually version-controlled in a database at the on-vehicle device, corresponding to the first static information;
• wherein a content of the first static information corresponds to a content of the second static information, and the content of the first static information is identical to the content of the second static information if the version information of the first static information matches a version information of the second static information,
• wherein, if the version information of the first static information included in the dynamic information is newer than the version information of the second static information, or if the second static information corresponding to the first static information does not exist, the information providing center enables the on-vehicle device, which implements a drive assist service by using the dynamic information, to implement the drive assist service, not by combining the dynamic information with the content of the second static information corresponding to the content of the first static information, but by combining the dynamic information with a static information generated by adding a predetermined information pre-stored in the on-vehicle device to the content of the second static information or by combining the dynamic information with a predetermined information pre-stored in the on-vehicle device which is different from the content of the second static information.

An information providing method for providing a vehicle with information to assist driving the vehicle via road-to-vehicle communication, comprising:

• a transmitting step where an information providing center having a first static information, that is individually version-controlled in a database at the information providing center, transmits a dynamic information referring to the first static information and including a version information of the first static information;
• a receiving step where an on-vehicle device, having a second static information, that is individually version-controlled in a database at the on-vehicle device, corresponding to the first static information and implementing a drive assist service by using the dynamic information, receives the dynamic information transmitted from the information providing center in the transmitting step;
• and
• a service content determining step where the on-vehicle device determines a content of a drive assist service to be implemented based on a version information of the second static information and the version information of the first static information included in the dynamic information received in the receiving step,
• wherein a content of the first static information corresponds to a content of the second static information, and the content of the first static information is identical to the content of the second static information if the version information of the first static information matches the version information of the second static information,
• wherein, in the service content determining step, if the version information of the first static information is newer than the version information of the second static information, or if the second static information corresponding to the first static information does not exist, the on-vehicle device implements the drive assist service, not by combining the dynamic information with the content of the second static information corresponding to the content of the first static information, but by combining the dynamic information with a static information generated by adding a predetermined information pre-stored in the on-vehicle device to the content of the second static information or by combining the dynamic information with a predetermined information pre-stored in the on-vehicle device which is different from the content of the second static information.