Geographic information system
First Claim
1. A geographic information system comprising:
- a map database;
a condition-input-device for inputting a search condition to search said map database;
a search device for searching said map database based on the search condition; and
a display device for displaying a result searched by said search device, wherein said map database stores object data associated with an object including a type of the object, a date of an occurrence and extinction of the object, wherein said object data are stored in ascending order of respective occurrence.
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Accused Products
Abstract
Records related to objects are stored in a map database (10) in ascending order of occurrences of the objects or in descending order of extinction of the objects. When objects available on a specified date are extracted, the date of the occurrences or extinction of the objects in the records are ascertained sequentially from the top. This ascertaining process is cancelled regarding the objects appearing after the specified date, or regarding the objects disappearing before the specified date. Objects seasonally available or available depending on the weather and temporary traffic regulations to be carried out irregularly are stored in the map database (10) by an operator or through a communication from a traffic control center. Those objects and regulations are not indicated on a calendar due to their irregularity. The objects agreeing with a condition can be extracted, or roads available are selected to form a passable route.
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Citations
13 Claims
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1. A geographic information system comprising:
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a map database;
a condition-input-device for inputting a search condition to search said map database;
a search device for searching said map database based on the search condition; and
a display device for displaying a result searched by said search device, wherein said map database stores object data associated with an object including a type of the object, a date of an occurrence and extinction of the object, wherein said object data are stored in ascending order of respective occurrence. - View Dependent Claims (2, 3)
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4. A geographic information system comprising:
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a map database;
a condition-input-device for inputting a search condition to search said map database;
a search device for searching said map database based on the search condition; and
a display device for displaying a result searched by said search device, wherein said map database stores object data associated with an object including a type of the object, a date of an occurrence and extinction of the object, wherein said object data are stored in descending order of respective occurrence. - View Dependent Claims (5, 6)
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7. A geographic information system comprising:
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a map database;
a condition-input-device for inputting a search condition to search said map database;
a search device for searching said map database following the search condition; and
a display device for displaying a result searched by said search device, wherein said map database stores object data associated with an object including a type of the object, a date of an occurrence and extinction of the object, wherein said object data relates to the date of the occurrence and extinction of the object, and are grouped with regard to one of a season and weather. - View Dependent Claims (8)
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9. A geographic information system comprising:
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a map database;
a condition-input-device for inputting a search condition to search said map database;
a search device for searching said map database following the search condition; and
a display device for displaying a result searched by said search device, wherein said map database stores object data associated with an object including a type of the object, a date of an occurrence and extinction of the object, wherein said map database includes data related to a temporary traffic regulation to be carried out within a limited period. - View Dependent Claims (10, 11)
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12. A method of searching a map database, said method comprising the steps of:
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storing data corresponding to a type, an occurrence and extinction of an object; and
searching the map database, where the data are stored in ascending order of the occurrence, for data scheduled before a specified date.
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13. A method of searching a map database, said method comprising the steps of:
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storing data corresponding to a type, an occurrence and extinction of an object; and
searching the map database, where the data are stored in descending order of the extinction, for data scheduled before a specified date.
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Specification