US Patent No: 7,664,764

Number of patents in Portfolio can not be more than 2000

Method and system for storage and fast retrieval of digital terrain model elevations for use in positioning systems

ALSO PUBLISHED AS: 20060074958

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Abstract

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Methods and apparatuses to generate and to access compressed and indexed elevations of Digital Elevation Models. In one aspect of the invention, a method to store elevation data includes: 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. In another aspect of the invention, a method to retrieve elevation data includes: locating a first compressed portion of a Digital Elevation Model (DEM) using a first index; and decompressing the first compressed portion to retrieve first elevation data for at least one sample point in the Digital Elevation Model. The Digital Elevation Model has a plurality of compressed portions which includes the first compressed portion; and the first index points to a storage location where the first compressed portion is stored.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA12451

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Biacs, Zoltan San Mateo, CA 22 274

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SNAPTRACK, INC. (5)
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5,945,944 Method and apparatus for determining time for GPS receivers 340 1997
6,215,442 Method and apparatus for determining time in a satellite positioning system 96 1998
6,061,018 Method and system for using altitude information in a satellite positioning system 248 1998
 
American Navigations Systems, Inc. (1)
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ANIMEDIA COMPANY LLC (1)
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Honeywell Inc. (1)
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IMOVE INC. (1)
2004/0075,738 Spherical surveillance system architecture 29 2003
 
JOHN DESMOND, BANKRUPTCY ACT CHAPTER 7 TRUSTEE IN., IN RE GEOSOFTWARE, INC., DEBTOR U.S.- BANKRUPTCY COURT (1)
6,229,546 Rapid terrain model generation with 3-D object features and user customization interface 59 1998
 
OPEN TEXT S.A. (1)
6,161,148 Computer method and apparatus for interactive objects controls 20 1996
 
PREMIER GEOSPATIAL, INC. (1)
6,757,445 Method and apparatus for producing digital orthophotos using sparse stereo configurations and external models 44 2000
 
The United States of America as represented by the Secretary of the Interior (1)
2002/0188,669 Integrated method for disseminating large spatial data sets in a distributed form via the internet 5 2001
 
Other [Check patent profile for assignment information] (2)
6,317,690 Path planning, terrain avoidance and situation awareness system for general aviation 46 1999
6,401,038 Path planning, terrain avoidance and situation awareness system for general aviation 45 2001

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
DEERE & COMPANY (3)
8,635,015 Enhanced visual landmark for localization 0 2009
8,224,516 System and method for area coverage using sector decomposition 3 2009
8,666,554 System and method for area coverage using sector decomposition 0 2012
 
CELLGUIDE LTD. (2)
8,799,292 Method of generating an elevation database 0 2011
8,593,347 GNSS navigation aided by static data 0 2011
 
GLOBAL LOCATE, INC. (1)
8,301,370 Method and apparatus for generating and using a regional-terrain model 0 2010

Maintenance Fees

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7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 16, 2017
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 16, 2021
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Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00