POSITIONING DEVICE AND POSITION MEASUREMENT INTERVAL CONTROL METHOD
First Claim
1. A positioning device comprising:
- a detection unit configured to detect a movement of a user who owns the positioning device;
a storage unit configured to store, in advance, a normal moving pattern indicating a temporal change in a moving state of the user at normal time;
a determination unit configured to determine the moving state from the movement;
a first certainty calculation unit configured to calculate a first certainty indicating a degree of coincidence between the normal moving pattern and the moving state determined at time of detecting the movement;
an interval calculation unit configured to calculate a position measurement interval depending on the first certainty; and
a positioning unit configured to measure a current position of the positioning device at the position measurement interval.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable terminal includes a body movement sensor configured to detect a movement of a user; a normal moving pattern storage unit configured to store, in advance, a normal moving pattern; a moving state determination unit configured to determine the moving state from the movement; a normal moving certainty calculation unit configured to calculate a normal moving certainty indicating a degree of coincidence between the normal moving pattern and the moving state determined at time of detecting the movement; a position measurement interval controller configured to calculate a position measurement interval depending on the normal moving certainty; and a positioning unit configured to measure a current position of the portable terminal at the position measurement interval.
-
Citations
12 Claims
-
1. A positioning device comprising:
-
a detection unit configured to detect a movement of a user who owns the positioning device; a storage unit configured to store, in advance, a normal moving pattern indicating a temporal change in a moving state of the user at normal time; a determination unit configured to determine the moving state from the movement; a first certainty calculation unit configured to calculate a first certainty indicating a degree of coincidence between the normal moving pattern and the moving state determined at time of detecting the movement; an interval calculation unit configured to calculate a position measurement interval depending on the first certainty; and a positioning unit configured to measure a current position of the positioning device at the position measurement interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A position measurement interval control method comprising:
-
detecting a movement of a user who owns a positioning device; determining a moving state of the user who owns the positioning device from the movement; calculating a first certainty indicating a degree of coincidence between the normal moving pattern and the moving state determined at time of detecting the movement; calculating a position measurement interval depending on the first certainty; and measuring a current position of the positioning device at the position measurement interval.
-
Specification