Map data access method for navigation and navigation system
First Claim
1. A map data access method for navigation which reads out map data for navigation from a recording medium and outputs them to a navigation system, said method comprising the steps of:
- (a) requesting map data by outputting a predetermined application programming interface from said navigation system; and
(b) reading out from said recording medium map data designated by said application programming interface and returning the map data as a byte array object to said navigation system.
2 Assignments
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Accused Products
Abstract
There is provided a map data access method and device capable of reading out from a recording medium the map data requested by a navigation system and providing them to the system whether C language, etc. or JAVA (trademark), etc. is employed to constitute a processing program on the navigation system side. In the recording medium, the map data and a reading method of the data are recorded in pairs in a map data section and a method section, respectively. When a navigation function section requests the map data, a data access section reads out desired data in a method (program) read out from the method section according to a requested application programming interface (API). The data read out are supplied as a byte array object to the navigation function section.
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Citations
14 Claims
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1. A map data access method for navigation which reads out map data for navigation from a recording medium and outputs them to a navigation system, said method comprising the steps of:
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(a) requesting map data by outputting a predetermined application programming interface from said navigation system; and
(b) reading out from said recording medium map data designated by said application programming interface and returning the map data as a byte array object to said navigation system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A navigation system comprising:
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execution means for executing navigation functions including display of maps or computation of routes; and
data access means for reading out data recorded in a recording medium, wherein said execution means make a request to said data access means for map data by outputting an application programming interface, and said data access means reads out map data from said recording medium in a manner corresponding to said application programming interface and outputs the map data as a byte array object to said execution means. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification