Method of inferring user' direction, direction inferring apparatus, and terminal apparatus
AssigneeFujitsu Limited
InventorHironori Sakakihara
Life of this patent
Estimating the term…
Abstract
A method of inferring a user's direction by a computer, the method includes: recording a relative azimuth angle obtained from an output of a direction sensor included in a terminal apparatus carried by the user; identifying the user's direction at a first point at which the user's direction is capable of being identified; and inferring the user's direction at a second point by using a relative azimuth angle corresponding to the first point and a relative azimuth angle corresponding to the second point different from the first point, and the user's direction that has been identified at the first point.
Claims5
A method of inferring a user's absolute direction by a computer, the method comprising:
- recording relative azimuth angles, obtained from an output of a direction sensor included in a terminal apparatus carried by the user, in a plurality of timings including timings corresponding to a first point and a second point different from the first point;
- identifying the user's absolute direction at the first point at which a predetermined condition is met;
- and
- inferring the user's absolute direction at the second point by using the relative azimuth angle corresponding to the first point, the relative azimuth angle corresponding to the second point, and the user's absolute direction that has been identified at the first point.
A direction inferring apparatus comprising:
- a recording unit configured to record relative azimuth angles, obtained from an output supplied from a direction sensor included in a terminal apparatus carried by a user, in a plurality of timings including timings corresponding to a first point and a second point different from the first point;
- an identifying unit configured to identify a user's absolute direction at the first point at which a predetermined condition is met;
- and
- an inferring unit configured to infer the user's absolute direction at the second point by using the relative azimuth angle corresponding to the first point, the relative azimuth angle corresponding to the second point, and the user's absolute direction that has been identified at the first point.
A terminal apparatus comprising:
- a direction sensor configured to measure relative azimuth angles of the terminal apparatus;
- a recording unit configured to record relative azimuth angles, obtained from an output supplied from a direction sensor included in a terminal apparatus carried by a user, in a plurality of timings including timings corresponding to a first point and a second point different from the first point;
- an identifying unit configured to identify a user's absolute direction at the first point at which a predetermined condition is met;
- and
- an inferring unit configured to infer the user's absolute direction at the second point by using the relative azimuth angle corresponding to the first point, the relative azimuth angle corresponding to the second point, and the user's absolute direction that has been identified at the first point.
Dependencies are inferred from the claim text.