Vehicle travel-route guidance apparatus with internal intersection discount feature
First Claim
1. A vehicle travel-route guidance apparatus, comprising:
- a map storage medium for storing map-related data and internal intersection information;
a control unit that is operative to establish a destination route from a predetermined departure site to a predetermined destination based on said stored map-related data;
means for determining whether said internal intersection information is provided during a destination route search by said control unit; and
means for relatively changing an evaluation value of searched map-related data, if said internal intersection information is associated therewith, to preferentially include said searched map-related data in said destination route when said control unit searches for said destination route by an evaluation-value calculation.
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Accused Products
Abstract
A vehicle travel-route guidance apparatus. The apparatus includes a map-storing device having internal intersection information that is furnished for executing a right-hand turn or a left-hand turn to bypass an intersection. The guidance apparatus further includes a device that determines whether searched links or nodes have internal intersection information associated therewith, either during, or after, link/node cost evaluation during a destination route search by the control unit. The guidance apparatus also includes a device for relatively changing an evaluation value of the link/node to preferentially include the link/node in a destination route when the control unit searches for a destination route by evaluation-value calculation, thereby ensuring that the most desirable destination route is chosen.
109 Citations
16 Claims
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1. A vehicle travel-route guidance apparatus, comprising:
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a map storage medium for storing map-related data and internal intersection information; a control unit that is operative to establish a destination route from a predetermined departure site to a predetermined destination based on said stored map-related data; means for determining whether said internal intersection information is provided during a destination route search by said control unit; and means for relatively changing an evaluation value of searched map-related data, if said internal intersection information is associated therewith, to preferentially include said searched map-related data in said destination route when said control unit searches for said destination route by an evaluation-value calculation. - View Dependent Claims (2, 3, 4, 5)
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6. A travel-route guidance apparatus for vehicle use, comprising:
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storage means for storing map node, link and internal intersection information; a control unit that is operative to establish a destination route from a predetermined departure site to a predetermined destination via a cost evaluation of associated route link and node information, and via a subsequent route cost calculation that utilizes said cost evaluation, said control unit further being operative to determine whether any of said stored internal intersection information is associated with any of said route link or node information; and changing means for changing an evaluation value of route link or node information, having internal intersection information associated therewith, to provide preferential status for said route link or node information in said route cost calculation to establish said destination route. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method of guiding a vehicle from a departure site to a destination, comprising the steps of:
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establishing said departure site and said destination; searching for a destination route between said departure site and said destination based on stored map-related data including node and link information; determining whether internal intersection information is provided with searched map-related data; and changing an evaluation value of said searched map-related data, if said internal intersection information is associated therewith, to preferentially include said searched map-related data in said destination route. - View Dependent Claims (14, 15, 16)
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Specification