Method for quickly searching interested point information in navigation system for vehicles
A technology of vehicle navigation system and points of interest, which is applied in the field of automotive electronics, can solve the problems of index files occupying the external memory of the system, and the retrieval speed is difficult to achieve common optimization, so as to achieve accurate and complete information of points of interest, and reduce the external memory of the system. The effect of space, fast traversal
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[0032] The quick retrieval method of point of interest information in the vehicle navigation system that the present invention proposes comprises the following steps:
[0033] (1) Convert all the initial letters of the pinyin describing the names of the original points of interest in the vehicle navigation system into search files in the form of strings, and create a search file for all the original points of interest numbers in the vehicle navigation system and each point of interest in the above string form The first mapping table between the starting positions in the retrieved file;
[0034](2) Create a data file according to the set format, and put all the information describing the original point of interest in the vehicle navigation system into the relevant position of the data file;
[0035] (3) set up a second mapping table between the numbering of each information in the above-mentioned data file, the length of the information and the offset of the information relativ...
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