초록 ▼

In an information terminal device, a processor receives route information on a route from a start point to a destination and guidance information required for route guidance, in accordance with a standard communications protocol. The processor guides the route from the start point to the destination

In an information terminal device, a processor receives route information on a route from a start point to a destination and guidance information required for route guidance, in accordance with a standard communications protocol. The processor guides the route from the start point to the destination through an information presentation part by using first cartographic data having a basis on the received route information and the guidance information. The processor requests, as required, a specific information service center for point information in a tag format showing details of each important point (POI) on the route through an information request part. As a result, the processor receives the point information on the important point from the information service center in accordance with the standard communications protocol. The processor presents the received point information on the important point simultaneously with a map based on the first cartographic data to clearly indicate each of the important points on the route. With the aid of the tag format, the information terminal device is capable of receiving, using the standard communications protocol, various information in the suitable format for the route guidance.

대표청구항 ▼

1. An information terminal device structured to be mobile and having access to a plurality of information service centers on a network that uses a predetermined protocol for communications, whereineach of the information service centers is structured as being capable of transmitting information in a

1. An information terminal device structured to be mobile and having access to a plurality of information service centers on a network that uses a predetermined protocol for communications, whereineach of the information service centers is structured as being capable of transmitting information in a tag format indicating attributes and contents of the information in accordance with the communications protocol, said information terminal device comprising: a first receiving part operable to receive route information indicating a route from a start point to a destination and guidance information for guiding the route; a route guidance part operable to guide the route from the start point to the destination by using first cartographic data having a basis on the route information and/or the guidance information received by said first receiving part; and a second receiving part operable to receive, from each of the information service centers, point information in the tag format indicating details of each important point on the route guided by said route guidance part based on a distance to each of the important points wherein said route guidance part, in guiding the route, is operable to present the point information received by said second receiver simultaneously with a map based on the first cartographic data.