Navigation system for updating partly map layers, and method for the same
First Claim
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1. A navigation system for updating partly a map layer, in which a management server updates map data of a user terminal through a wireless communication network, the navigation system comprising:
- a management server configured to transmit an occurrence of update to the user terminal when map data is updated, in which the management server produces an update area and an update layer based on a map data version which is acquired by the user terminal, transmits a layer list and a data capacity which is produced, and transmits update data requested by the user terminal; and
a user terminal configured to transmit information about the map data version of that user terminal, in which the user terminal produces the layer list to be updated, requests the update data, and modifies old map data into the updated map data so that the data may be partly updated,wherein, the map data is divided into a plurality of layer units having connectivity with adjacent areas based on a data attribute and a data type, and the layer unit is defined as a basic update unit,wherein, the map data is composed of a plurality of layer units, including road data, which has connectivity with adjacent areas, in which the map includes each of a plurality of objects based on the data attribute and the data type, and wherein, when the update of the map data occurs, a determination is made that updated areas are included in a certain layer, and accordingly, only required layers are updated.
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Abstract
The present invention features a navigation system for partly updating a map layer, and a method for the same, in which, by dividing a map into locally small data areas considering connectivity with adjacent areas, and updating only areas updated among the divided areas, the navigation system is able to minimize a size of the updated data, and delete unnecessary procedures for post-processing in a user terminal.
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12 Claims
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1. A navigation system for updating partly a map layer, in which a management server updates map data of a user terminal through a wireless communication network, the navigation system comprising:
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a management server configured to transmit an occurrence of update to the user terminal when map data is updated, in which the management server produces an update area and an update layer based on a map data version which is acquired by the user terminal, transmits a layer list and a data capacity which is produced, and transmits update data requested by the user terminal; and a user terminal configured to transmit information about the map data version of that user terminal, in which the user terminal produces the layer list to be updated, requests the update data, and modifies old map data into the updated map data so that the data may be partly updated, wherein, the map data is divided into a plurality of layer units having connectivity with adjacent areas based on a data attribute and a data type, and the layer unit is defined as a basic update unit, wherein, the map data is composed of a plurality of layer units, including road data, which has connectivity with adjacent areas, in which the map includes each of a plurality of objects based on the data attribute and the data type, and wherein, when the update of the map data occurs, a determination is made that updated areas are included in a certain layer, and accordingly, only required layers are updated. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for updating partly a map layer of a navigation system, in which a management server updates map data of the navigation system in a user terminal through a wireless communication network, the method comprising:
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a) receiving an occurrence of update from the management server when the map data is updated, and transmitting information about the map data version of the user terminal to the management server, which is performed by the user terminal; b) producing an update area and an update layer based on a map data version acquired by the user terminal, and transmitting a layer list and a data capacity to the user terminal, which is performed by the management server; c) producing the layer list to be updated, and requesting the update data to the management server, which is performed by the user terminal, in which the update data includes an update area and a layer list which are required for the last time; d) transmitting the update data to the user terminal, which is performed by the management server, in which the update data is requested from the user terminal; and e) modifying old map data into updated map data, and updating the map partly, which is performed by the user terminal, wherein, the map data is divided into a plurality of layer units having connectivity with adjacent areas based on a data attribute and a data type, and the layer unit is defined as a basic update unit, wherein, the map data is composed of a plurality of layer units including road data which has connectivity with adjacent areas, in which the map includes each of a plurality of objects based on the data attribute and the data type, and wherein, when the update of the map data occurs, a determination is made that updated areas are included in a certain layer, and accordingly, only required layers are updated. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification