POSITION INFORMATION MANAGEMENT METHOD AND APPARATUS
First Claim
1. A position information management method for transmitting a location indicator indicating the location of a first terminal to a second terminal comprising steps of the computer:
- reviewing a historical list generated by recording location indicators having been sent from the first terminal;
determining whether the first terminal stays at one location for a predetermined length of time and whether the first terminal is located within a predetermined monitoring target area based on data contained in the historical list; and
providing a warning to the second terminal when and if the computer determines that the first terminal has stayed for the predetermined length of time at said one location within the predetermined monitoring target area in the determining step.
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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.
54 Citations
14 Claims
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1. A position information management method for transmitting a location indicator indicating the location of a first terminal to a second terminal comprising steps of the computer:
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reviewing a historical list generated by recording location indicators having been sent from the first terminal;
determining whether the first terminal stays at one location for a predetermined length of time and whether the first terminal is located within a predetermined monitoring target area based on data contained in the historical list; and
providing a warning to the second terminal when and if the computer determines that the first terminal has stayed for the predetermined length of time at said one location within the predetermined monitoring target area in the determining step. - View Dependent Claims (2, 3, 4, 5, 11, 12)
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6. A position information management apparatus for transmitting a location indicator indicating the location of a first terminal to a second terminal comprising:
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a storage unit storing a historical list generated for recoding location indicators having been sent from the first terminal;
a determination unit reviewing the historical list and determining whether the first terminal stays at one location for a predetermined length of time and whether the first terminal is located within a predetermined monitoring target area; and
a providing unit providing a warning to the second terminal when and if the determination unit determines that the first terminal has stayed for the predetermined length of time at said one location within the predetermined monitoring target area. - View Dependent Claims (7, 8, 9, 10, 13, 14)
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Specification