Map information Providing system and map information searching method
First Claim
1. A map information providing system for providing map data to a terminal device via a data transmission path, comprising:
- a first server, the first server comprising a first storage unit for storing map data; and
a second server connected with the first server and the terminal device via a network, the second server comprising a second storage unit for storing the map data, the first server comprising;
a unit for producing map search table which designates at least one of the first storage unit, the second storage unit and a third storage unit in the terminal device, from which certain map data is to be obtained; and
a unit for transmitting the produced map searching table to the terminal device to be stored in the terminal device.
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Accused Products
Abstract
A map information providing system for providing map data to a terminal device via a data transmission path, includes: a first server, the first server including a first storage unit for storing map data; and a second server connected with the first server and the terminal device via a network, the second server including a second storage unit for storing the map data. The first server includes: a unit for producing map search table which designates at least one of the first storage unit, the second storage unit and a third storage unit in the terminal device, from which certain map data is to be obtained; and a unit for transmitting the produced map searching table to the terminal device to be stored in the terminal device.
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Citations
9 Claims
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1. A map information providing system for providing map data to a terminal device via a data transmission path, comprising:
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a first server, the first server comprising a first storage unit for storing map data; and
a second server connected with the first server and the terminal device via a network, the second server comprising a second storage unit for storing the map data, the first server comprising;
a unit for producing map search table which designates at least one of the first storage unit, the second storage unit and a third storage unit in the terminal device, from which certain map data is to be obtained; and
a unit for transmitting the produced map searching table to the terminal device to be stored in the terminal device. - View Dependent Claims (2, 3, 4)
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5. A map information searching method executed in a map information providing system comprising:
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a first server comprising a first storage unit for storing map data;
a second server connected with the first server via a network and having a second storage unit for storing the map data; and
at least one terminal device connected with the second server via the network and comprising a third storage unit for storing the map data and a map searching table map search table which designates at least one of the first storage unit, the second storage unit and a third storage unit in the terminal device, from which certain map data is to be obtained, said method comprising the steps of;
at the terminal device, receiving from a user an input designating map data to be searched for;
referring to the map searching table and determining one of the first storage unit, the second storage unit and the third storage unit, from which the map data designated by the user is to be obtained;
accessing the storage unit determined by the determining step to obtain the designated map data; and
displaying the obtained map data on a display device of the terminal device. - View Dependent Claims (6, 7, 8)
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9. A map information searching method executed in a map information providing system comprising:
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a first server comprising a first storage unit for storing map data;
a second server connected with the first server via a network and having a second storage unit for storing the map data; and
at least one terminal device connected with the second server via the network and comprising a third storage unit for storing the map data, said method comprising the steps of;
a first step for receiving from a user, at the terminal device, an input designating map data to be searched for;
a second step for determining whether or not the designated map data is stored in the third storage unit;
a third step for accessing the third storage unit to obtain the designated map data if it is determined in the second step that the designated map data is stored in the third storage unit;
a fourth step for determining whether or not the designated map data is stored in the second storage unit if it is determined in the second step that designated map data is not stored in the third storage unit;
a fifth step for accessing the second storage unit to obtain the designated map data if it is determined in the fourth step that the designated map data is stored in the second storage unit;
a sixth step for determining whether or not the designated map data is stored in the first storage unit if it is determined in the fourth step that the designated map data is not stored in the second storage unit;
a seventh step for accessing the first storage unit to obtain the designated map data if it is determined in the sixth step that the designated map data is stored in the first storage unit; and
an eighth step for displaying, on a display device of the terminal device, the map data obtained in one of the third step, the fifth step and the seventh step.
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Specification