Navigation system,route searching method, and map information guide method
First Claim
1. A navigation system comprising:
- position detector for detecting the current position of a mobile unit, map information acquisition section for acquiring map information, traffic restriction information acquisition section for acquiring traffic restriction information, time information acquisition section for acquiring current date, day of week, and time information, input section for entering a route point, route searching section for searching for an optimum route passing through the route point from the current position at the current date, day of week, and time based on the map information and the traffic restriction information, and output section for guiding a user through the found route by display or voice, wherein said route searching section includes;
area determination section for determining whether an area of the current position is an urban area or a suburban area, setting section for setting a predetermined area or a predetermined time responsive to the determination result, and restriction presence or absence determination section for determining the presence or absence of restriction on each time restriction road depending on whether or not a time restriction road exists in the predetermined area centering around the current position and whether or not a restriction time period of the time restriction road overlaps a time period in the predetermined time from the current time, and if the restriction presence or absence determination section determines the presence of restriction, said route searching section searches for a route avoiding the time restriction road.
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Accused Products
Abstract
A route searching section 33 determines whether the area of the current position is an urban area or a suburban area, sets a predetermined area S or a predetermined time Δt responsive to the determination result, and determines the presence or absence of restriction on each time restriction road depending on whether or not a time restriction road exists in the predetermined area S centering around the current position and whether or not the restriction time period of the time restriction road overlaps the time period in the predetermined time At from the current time to. If the route searching section determines the presence of restriction, it searches for a route avoiding the time restriction road.
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Citations
10 Claims
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1. A navigation system comprising:
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position detector for detecting the current position of a mobile unit, map information acquisition section for acquiring map information, traffic restriction information acquisition section for acquiring traffic restriction information, time information acquisition section for acquiring current date, day of week, and time information, input section for entering a route point, route searching section for searching for an optimum route passing through the route point from the current position at the current date, day of week, and time based on the map information and the traffic restriction information, and output section for guiding a user through the found route by display or voice, wherein said route searching section includes;
area determination section for determining whether an area of the current position is an urban area or a suburban area, setting section for setting a predetermined area or a predetermined time responsive to the determination result, and restriction presence or absence determination section for determining the presence or absence of restriction on each time restriction road depending on whether or not a time restriction road exists in the predetermined area centering around the current position and whether or not a restriction time period of the time restriction road overlaps a time period in the predetermined time from the current time, and if the restriction presence or absence determination section determines the presence of restriction, said route searching section searches for a route avoiding the time restriction road. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A navigation system comprising:
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map information acquisition section for acquiring map information, traffic restriction information acquisition section for acquiring traffic restriction information, time information acquisition section for acquiring current date, day of week, and time information, and output section for providing a user with the map information or the traffic restriction information by display or voice, restriction time determination section, if a time restriction road exists in a guide area, for determining a difference between a restriction time period of the time restriction road and the current time, and output mode selector for selecting an output mode of the time restriction road varying depending on the determination result, wherein said output section guides the user through the time restriction road according to the selected output mode. - View Dependent Claims (8)
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9. A route searching method comprising:
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a position detection step of detecting the current position of a mobile unit, a map information acquisition step of acquiring map information, a traffic restriction information acquisition step of acquiring traffic restriction information, a time information acquisition step of acquiring current date, day of week, and time information, an input step of entering a route point, a route searching step of searching for an optimum route passing through the route point from the current position at the current date, day of week, and time based on the map information and the traffic restriction information, and an output step of guiding a user through the found route by display or voice, wherein the route searching step includes;
an area determination step of determining whether an area of the current position is an urban area or a suburban area, a setting step of setting a predetermined area or a predetermined time responsive to the determination result, and a restriction presence or absence determination step of determining the presence or absence of restriction on each time restriction road depending on whether or not a time restriction road exists in the predetermined area centering around the current position and whether or not a restriction time period of the time restriction road overlaps a time period in the predetermined time from the current time, and if the restriction presence or absence determination step determines the presence of restriction, the route searching step searches for a route avoiding the time restriction road.
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10. A map information guide method comprising:
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a map information acquisition step of acquiring map information, a traffic restriction information acquisition step of acquiring traffic restriction information, a time information acquisition step of acquiring current date, day of week, and time information, an output step of providing a user with the map information or the traffic restriction information by display or voice, a restriction time determination step, if a time restriction road exists in a guide area, of determining a difference between a restriction time period of the time restriction road and the current time, and an output mode selection step of selecting an output mode of the time restriction road varying depending on the determination result, wherein the output step guides the user through the time restriction road according to the selected output mode.
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Specification