APPARATUS, METHOD, AND PROGRAM FOR OUTPUTTING PRESENT POSITION
First Claim
1. A present position output apparatus, comprising:
- a pressure sensor that measures atmospheric pressure;
an atmospheric pressure data memory, connected to the pressure sensor, for storing the atmospheric pressure measured by the pressure sensor; and
a controller, connected to the atmospheric pressure data memory, the controller including;
a detection means for detecting movement into a multi-level area;
a reference atmospheric pressure memory for obtaining a reference elevation and a reference atmospheric pressure that correspond with the multi-level area and storing the reference elevation and reference atmospheric pressure to the atmospheric pressure data memory;
an elevation specifying means for comparing the atmospheric pressure measured by the pressure sensor with the reference atmospheric pressure and specifying the elevation of a present position at which the atmospheric pressure was measured based on the comparison result; and
an output means for outputting information related to the specified elevation of the present position.
16 Assignments
0 Petitions
Accused Products
Abstract
An apparatus, method and program for outputting a present position that enables a user to be located with further accuracy even in a multi-level area. A control unit periodically sends a reference atmospheric pressure information obtaining request to a base station and obtains reference atmospheric pressure information including the atmospheric pressure and altitude of the base station from the base station and stores the obtained information in a data storage. The control unit uses the measurement value of atmospheric pressure obtained from a pressure sensor and an altitude calculation equation including the reference atmospheric pressure information to periodically calculate and record in the data storage the altitude of the present position. When an emergency button is pushed, the control unit issues to an emergency contact an emergency notification including the present altitude or the altitude recorded in the data storage.
84 Citations
6 Claims
-
1. A present position output apparatus, comprising:
-
a pressure sensor that measures atmospheric pressure; an atmospheric pressure data memory, connected to the pressure sensor, for storing the atmospheric pressure measured by the pressure sensor; and a controller, connected to the atmospheric pressure data memory, the controller including; a detection means for detecting movement into a multi-level area; a reference atmospheric pressure memory for obtaining a reference elevation and a reference atmospheric pressure that correspond with the multi-level area and storing the reference elevation and reference atmospheric pressure to the atmospheric pressure data memory; an elevation specifying means for comparing the atmospheric pressure measured by the pressure sensor with the reference atmospheric pressure and specifying the elevation of a present position at which the atmospheric pressure was measured based on the comparison result; and an output means for outputting information related to the specified elevation of the present position. - View Dependent Claims (2, 3, 4)
-
-
5. A method for outputting present position with a present position output apparatus including a pressure sensor that measures atmospheric pressure, an atmospheric pressure data memory for storing the atmospheric pressure measured by the pressure sensor, and a control means, the method comprising:
the control means performing; a detection step for detecting movement into a multi-level area; a reference atmospheric pressure recording step for obtaining a reference elevation and a reference atmospheric pressure that correspond with the multi-level area and storing the reference elevation and reference atmospheric pressure to the atmospheric pressure data memory; an elevation determining step that compares the atmospheric pressure measured by the pressure sensor with the reference atmospheric pressure and calculates the elevation of a present position at which the atmospheric pressure was measured based on the comparison result; and an output step for outputting information related to the specified elevation of the present position.
-
6. (canceled)
Specification