Route guiding method for in-vehicle navigation device
First Claim
1. A route guiding method for an in-vehicle navigation device, comprising the steps of:
- determining whether a vehicle is on track within a predetermined intersection range based on route guidance data received from a traffic information center via a mobile communication network;
determining whether the vehicle is in a free run state according to predetermined free run conditions to prevent a preliminary route guidance message that is confusing to a driver of the vehicle in the free run state, if the vehicle is on track within the intersection range; and
selectively providing the preliminary route guidance message according to whether the vehicle is determined to be in a free run state.
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Accused Products
Abstract
A route guiding method for an in-vehicle navigation device. To guide a vehicle to a destination by an optimum route, it is determined whether the vehicle is on track within a predetermined intersection range based on route guidance data received from a traffic information center via a mobile communication network. If the vehicle is on track within the intersection range, it is determined whether the vehicle is in a free run state according to predetermined free run conditions to prevent a preliminary route guidance message that is confusing to a driver in the free run state. According to the determination result, the preliminary route guidance message is selectively provided.
19 Citations
11 Claims
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1. A route guiding method for an in-vehicle navigation device, comprising the steps of:
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determining whether a vehicle is on track within a predetermined intersection range based on route guidance data received from a traffic information center via a mobile communication network;
determining whether the vehicle is in a free run state according to predetermined free run conditions to prevent a preliminary route guidance message that is confusing to a driver of the vehicle in the free run state, if the vehicle is on track within the intersection range; and
selectively providing the preliminary route guidance message according to whether the vehicle is determined to be in a free run state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A route guiding method for an in-vehicle navigation device, comprising the steps of:
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determining whether a vehicle is within a predetermined intersection range based on route guidance data received from a traffic information center via a mobile communication system;
determining whether the vehicle is on track based on calculated route information contained in the route guidance data, if the vehicle is within the intersection range;
determining whether the vehicle is in a free run state according to predetermined free run conditions to prevent a preliminary route guidance message that is confusing to a driver of the vehicle in the free run state, if the vehicle is on track in the calculated route;
discontinuing provision of the preliminary route guidance message in the free run state; and
providing the preliminary route guidance message before the vehicle reaches a next intersection if the free run conditions are not satisfied. - View Dependent Claims (9)
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10. A route guiding method for an in-vehicle navigation device, comprising the steps of:
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determining whether a vehicle is on track based on route guidance data received from a traffic information center via a mobile communication network;
determining whether the vehicle is in a free run state according to predetermined free run conditions to prevent a preliminary route guidance message that is confusing to a driver of the vehicle in the free run state, if the vehicle is on track; and
selectively providing the preliminary route guidance message according to whether the vehicle is determined to be in a free run state. - View Dependent Claims (11)
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Specification