Apparatus and method for detecting heading change in mobile terminal
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-Min PARK, Kyong-Ha Park
Life of this patent
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Abstract
An apparatus and a method for detecting a heading change of a navigating body to which a mobile terminal has been attached are provided. The mobile terminal includes at least one measure unit and a change vector calculator. The at least one measure unit measures at least one of an acceleration of gravity component vector and a rotational axis component vector, with respect to a rotation of the navigating body, on a terminal coordinate system that is fixed in the mobile terminal. The change vector calculator calculates a horizontal heading change vector and a vertical heading change vector based on at least one of the acceleration of gravity component vector and the rotational axis component vector.
Claims19
A mobile terminal attachable to and detachable from a navigating body, the mobile terminal comprising:
- at least one measure unit for measuring at least one of an acceleration of gravity component vector and a rotational axis component vector, with respect to a rotation of the navigating body, on a terminal coordinate system that is fixed in the mobile terminal;
- and
- a change vector calculator for calculating a horizontal heading change vector and a vertical heading change vector based on at least one of the acceleration of gravity component vector and the rotational axis component vector.
A method for operating a mobile terminal that is attachable to and detachable from a navigating body, the method comprising the steps of:
- measuring at least one of an acceleration of gravity component vector and a rotational axis component vector, with respect to a rotation of the navigating body, on a terminal coordinate system that is fixed in the mobile terminal;
- and
- calculating a horizontal heading change vector and a vertical heading change vector based on at least one of the acceleration of gravity component vector and the rotational axis component vector.
A mobile terminal comprising:
- an acceleration of gravity measure unit for measuring an acceleration of gravity component vector on a terminal coordinate system that is fixed in the mobile terminal;
- a rotational axis component measure unit for measuring a rotational axis component vector with respect to a rotation of a navigating body in the terminal coordinate system;
- a coordinate system transformer for transforming the measured acceleration of gravity component vector and the measured rotational axis component vector into respective components of a horizontal plane coordinate system that is fixed in a horizontal plane;
- a change vector calculator for calculating a horizontal heading change vector and a vertical heading change vector based on the acceleration of gravity component vector and the rotational axis component vector;
- a position determination value receiver for determining a current position of the navigating body;
- a display unit for displaying a path from the current position to a destination set by a user of the mobile terminal;
- and
- a path corrector for, when a branching road exists on the path from the current position to the destination, or an error exists in the received position determination value, correcting the path of the navigating body based on the horizontal heading change vector and the vertical heading change vector.
Dependencies are inferred from the claim text.