Position information management system
0 Assignments
0 Petitions
Accused Products
Abstract
A position information management system in which a portable remote terminal includes a plurality of kinds of positioning means for positioning based on a GPS, positioning based on a portable-telephone or PHS base station, positioning based on a radio marker, and independent positioning based on a direction detector, so that the holder of the portable remote terminal can be navigated anywhere. The holder of the portable remote terminal can know the position of a third party similarly holding such a portable remote terminal, by inquiring of a central system, and he/she can supervise, for example, the action of an old person, a child, or a skier in a skiing area. Further, only the map data of a district which is often used by the holder is stored in the portable remote terminal. In this regard, when the holder is in a district not contained within the retained map data, he/she downloads corresponding map data from the central system and uses the downloaded map data.
-
Citations
35 Claims
-
1-27. -27. (canceled)
-
28. An information processing terminal transmitting own location indicators to a position information management apparatus managing the location indicators, the information processing terminal comprising:
-
an acquiring device for acquiring the location indicators each specifying the location of the information processing terminal of itself using a pre-assigned position determination system; and
a reporting device for transmitting the location indicators to the position information management apparatus respectively at times separated by a prescribed time interval or when so requested from the position information management apparatus, wherein, the acquiring device is configured in such a manner that the acquiring device is capable of acquiring the location indicators using a position determination system of any type among those of a pre-assigned type variety and of switching, whenever the acquiring device becomes unable to use one of the systems, automatically from the unusable system to another for acquiring the location indicator correspondent to the time of acquisition. - View Dependent Claims (29, 30, 31, 32)
-
-
33. A process, comprising:
-
producing position information by first portable device as the first portable device moves;
storing the position information of the first portable device as the first portable device moves;
determining a second device current position of a second device;
requesting a first device current position of the first portable device from the stored position information when the first device current position of the first portable device is not available;
obtaining and displaying a map showing the second first device current position and the estimated position when the first device current position of the first portable device is not available.
-
-
34. A process, comprising:
-
producing position information by first and second portable devices as the portable devices move;
storing the position information of the portable devices as the portable devices move;
determining a second device current position of the second portable device;
requesting a first device current position of the first portable device;
producing an estimated position for the first portable device from the stored position information when the first device current position of the first portable device is not available;
obtaining and displaying a map showing the second first device current position and the estimated position when the first device current position of the first portable device is not available.
-
-
35. A portable device, comprising:
-
a current position unit providing a portable device current position of the portable device; and
a controller requesting a current position of a second device;
receiving an estimated position for the second device when the current position of the second device is not available, and obtaining and displaying a map showing the portable device current position and the estimated position when the current position of the second device is not available.
-
Specification