Source: https://insight.rpxcorp.com/pat/US6336073B1
Timestamp: 2020-01-20 15:21:28
Document Index: 91226578

Matched Legal Cases: ['art.\n3', 'art.\n13', 'art 1815', 'art 1813', 'art 1817', 'art 1815']

Patent US 6,336,073 B1
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 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.
APPROPRIATELY SCALED MAP DISPLAY WITH SUPERPOSED INFORMATION
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2. The information terminal device as claimed in claim 1, whereinthe guidance information includes ID information simply specifying each important point, and said device further comprises a request part operable to send a request for a search for the point information using the ID information to each of the information service centers, as required, and said second receiving part is operable to receive the point information from each of the information service centers after the request is sent by said request part.
3. The information terminal device as claimed in claim 2, whereinthe ID information is any of a phone number, an address, and a zip code, each of the information service centers converts any of the phone number, the address, and the zip code received as a keyword to a combination of longitude and latitude coordinates, and said second receiving part is operable to receive the point information on each important point including the combination of the longitude and latitude coordinates thereof.
4. The information terminal device as claimed in claim 2, whereinthe ID information is a combination of the longitude and latitude coordinates, each of the information service centers converts the combination of the longitude and latitude coordinates received as a keyword to the phone number, the address and/or the zip code, and said second receiving part is operable to receive the point information on each important point including the phone number, the address and/or the zip code thereof.
5. The information terminal device as claimed in claim 1, whereinthe point information includes second cartographic data having a scale different from that of the first cartographic data, and said route guidance part is operable to present a map based on the second cartographic data received by said second receiving part simultaneously with the map based on the first cartographic data.
6. The information terminal device as claimed in claim 5, whereinthe second cartographic data is cartographic data for showing an enlarged map of a vicinity of the important point.
7. The information terminal device as claimed in claim 5, whereinthe second cartographic data is cartographic data for three-dimensionally showing a vicinity of the important point.
8. The information terminal device as claimed in claim 5, whereinsaid route guidance part is operable to present a map based on second cartographic data that has a largest data size simultaneously with the map based on the first cartographic data when said second receiving part receives a plurality of second cartographic data.
9. The information terminal device as claimed in claim 5, whereinsaid route guidance part is operable to present a map based on second cartographic data that has a smallest data size simultaneously with the map based on the first cartographic data when said second receiving part receives a plurality of second cartographic data.
10. The information terminal device as claimed in claim 5, whereinsaid route guidance part is operable to present a map based on a latest second cartographic data simultaneously with the map based on the first cartographic data when said second receiving part receives a plurality of second cartographic data.
11. The information terminal device as claimed in claim 1, whereinthe point information is second cartographic data for showing details in a building or an underground mall as being the important point, and said route guidance part is operable to present a map based on the second cartographic data received by said second receiving part simultaneously with the map based on the first cartographic data.
a presentation part operable to present the search results received by said third receiving part to the user, wherein said route guidance part is operable to guide a route to a point that is selected as the destination from among the search results presented by said presentation part.
13. The information terminal device as claimed in claim 12, whereinsaid presentation part is operable to present a search result of a larger data size with higher priority when said third receiving part receives a plurality of search results.
14. The information terminal device as claimed in claim 12, whereinsaid presentation part is operable to present a search result of a smaller data size with higher priority when said third receiving part receives a plurality of search results.
15. The information terminal device as claimed in claim 12, whereinsaid presentation part is operable to present a search result of a later date of update with higher priority when said third receiving part receives a plurality of search results.
16. The information terminal device as claimed in claim 1, whereinthe point information includes first information simply specifying the important point and second information specifying the important point in detail, and the first information includes at least tags specifying a name and a phone number of the important point.
17. The information terminal device as claimed in claim 1, whereinthe route information includes at least tags specifying a name of a road to be traveled, a name of a crossing being a branch point, a distance between the branch points, and a turning direction at the branch point.
18. The information terminal device as claimed in claim 1, whereina crossing number is uniquely determined for each of nationwide crossings, and the route information includes at least tags specifying the crossing number.
19. The information terminal device as claimed in claim 17, whereinthe guidance information includes the branch point described in the route information in the tag format, and information on at least a name and a phone number of a point being a landmark for the branch point.
20. A method for route guidance used for 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 method comprising:
receiving, from each of the information service centers, point information in the tag format indicating details of each important point on the guided route based on a distance to each of the important points, wherein in said guiding, the received point information is presented simultaneously with a map based on the cartographic data.
On the other end, in the additional data providing system 1802, a data search part 1815 performs a search in response to the data request which is transmitted from the navigation system 251801 and received at the receiver 1812. A data conversion part 1813 converts the search result into a format suitable for communications and a transmitter 1814 transmits the converted data to the navigation system 1801. Further, the additional data providing system 1802 accesses an external network 1819 through a network access part 1817 and receives information therefrom. The received information is sent to a data generator 1818. Based on the received information, the data generator 1818 generates data required as service data. The generated data is stored in a data storage 1816 and provided to the navigation system 1801 through the data search part 1815 as the additional data.
In the first aspect, however, the information terminal device and each information service center perform data communications in accordance with a standard communications protocol used in a communications network. Therefore the information terminal device can communicate with every information service center on the communications network, increasing user'"'"'s choices of information. Further, a format of information exchanged between the information terminal device and each information service center is standardized. Thereby, each information service center can provide various information services without restraint as long as the information is provided in the tag format. Accordingly, the information terminal device is not necessary to be added with a new function even if a new information service is provided, resulting in reduction of business costs.
As described in the fifth to the eleventh aspects, the route guidance part simultaneously displays the map based on the second cartographic data with the map based on the first cartographic data in accordance with the priorities respectively described in the aspects. In this manner, user-friendly route guidance further reflecting the user'"'"'s preferences can be presented.
As described in the twelfth aspect, the information terminal device can present the search results from each of the information service centers as candidates for the destination, thereby enhancing the user'"'"'s choices of the destinations.
As described in the twentieth aspect, similarly to the first aspect, reduction of the business costs can be achieved and also the route guidance flexibly suiting the user'"'"'s preferences can be realized.
First, in step S305, the search results having the same [POI-ID] are selected for processing- Next, the processor 104 assigns priorities to the selected search results (step S305). The following three methods are presumable for assigning priorities in the embodiment. A first method is that the processor 104 searches each <size> of the selected search results and gives higher priority to the search result having larger data size. In this case, the detail of information is prioritized. A second method is that the processor 104 also searches <size> and gives higher priority to the search result having smaller data size. In this case, the reduction in communication costs and a time required for retrieving POI information is prioritized. A third method is that the processor 104 searches each <update> of the search results and gives higher priority to the one having the later date of update- In this case, freshness of information is prioritized. Any of the above three methods is previously set in the information terminal device 100 to meet the user'"'"'s preference.
Further, various information exchanged between the information terminal device 100 and each of the information service centers 310 to 370 is in the tag format. The information described in the tag format indicates the data structures and the contents of the various information used for the route guidance. Accordingly, for the route guidance, information that precisely matches user'"'"'s preference can be received from each of the information service centers 310 to 370 on the Internet 400 providing enormous amount of information. Furthermore, with use of the tag format, the POI information easily becomes related more closely to the cartographic data. Therefore, a plurality of information can be presented to the user at the same time, thereby realizing the route guidance flexibly suiting the preferences of the user.
Ihara, Yasuhiro, Fukuda, Hisaya, Suzuki, Akihiro, Nakano, Nobuyuki
701/202, 701/201, 701/208, 701/209, 701/210, 701/211, 701/212, 340/988, 340/990, 340/995