发明名称 |
VERFAHREN UND SYSTEM ZUR SPEICHERUNG UND ZUM SCHNELLEN ZUGRIFF AUF HÖHENANGABEN EINES DIGITALEN HÖHENMODELLS ZUR VERWENDUNG IN POSITIONIERUNGSSYSTEMEN |
摘要 |
The present invention relates to methods and apparatuses to generate compressed and indexed elevations of Digital Elevation Models. The invention provides a method to store elevation data, which includes the steps of compressing elevation data of a first portion of a Digital Elevation Model (DEM) to generate first compressed elevation data; storing the first compressed elevation data in a storage location pointed to by a first index; and storing the first index. The invention also provides a machine readable media containing executable program instruction which when executed by a digital processing system cause said system to store elevation data according to the above method. The invention further provides a digital processing system to store elevation data and a machine readable media containing a data stream representing a Digital Elevation Model. |
申请公布号 |
AT383051(T) |
申请公布日期 |
2008.01.15 |
申请号 |
AT20060004083T |
申请日期 |
2003.01.24 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
BIACS, ZOLTAN |
分类号 |
G01S19/50;G01C21/00;G01S5/02;G01S5/14;G01S19/06;G01S19/48;G01S19/51;G06T17/05;H03M7/30;H04W64/00 |
主分类号 |
G01S19/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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