Digital map shape vector encoding method and position information transfer method
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United States of America Patent
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May 26, 2009
Grant Date -
Feb 7, 2008
app pub date -
Oct 11, 2007
filing date -
May 1, 2001
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Abstract
It is an object to provide a method of coding the position information of a digital map in a small data volume by utilizing a compressing and coding technique. In a coding method of coding data indicative of a shape vector on a digital map, an arithmetic processing is carried out over position information about a node string and a shape which indicate the shape vector to be represented by data having a statistical deviation, and the data having the statistical deviation are coded to reduce a data volume. It is possible to considerably decrease a transmission data volume in the case in which the vector shape of the digital map is to be transferred.
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