System and method of wireless downloads of map and geographic based data to portable computing devices
First Claim
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1. A method of caching map data, the method comprising:
- storing a plurality of map segments in a cache;
associating each of the map segments with a rank;
updating the rank of at least one of the map segments when the at least one map segment is accessed;
selecting at least one map segment from the cache to be removed based at least in part on the rank of the at least one selected map segment; and
removing the at least one selected map segment from the cache.
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Abstract
A system and method of managing map data on electronic devices such as portable electronic devices which includes a system and method of preloading map data, managing map data storage, sharing point of interest or pushpin data with other electronic devices, and displaying map data is disclosed.
81 Citations
22 Claims
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1. A method of caching map data, the method comprising:
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storing a plurality of map segments in a cache;
associating each of the map segments with a rank;
updating the rank of at least one of the map segments when the at least one map segment is accessed;
selecting at least one map segment from the cache to be removed based at least in part on the rank of the at least one selected map segment; and
removing the at least one selected map segment from the cache. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for displaying map data, the system comprising:
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means for identifying each of a plurality of geographically referenced contents with an index that is determined based at least in part on geographic coordinates of the respective geographically referenced content;
means for displaying a representation of a map comprising a plurality of map segments at a selected zoom level on a display;
means for comparing the index of each of the geographically referenced contents to respective indices associated with each of the plurality of map segments;
means for selecting at least one of the geographically referenced contents based at least in part on results of the comparing; and
means for displaying the at least one of the geographically referenced contents on the display. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of storing map segments, the method comprising:
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storing at least one first map segment representing a geographic area at a first zoom level in a storage;
storing at least one map segment representing a portion of the geographic area at a second zoom level in the storage;
displaying the first segment on a display;
visually representing the portion of the geographic area represented by the at least one stored map segment on the display, wherein the at least one stored map segment is visually represented differently on the display from portions of the geographic area that correspond to map segments at the second zoom level that are absent from the storage. - View Dependent Claims (16, 17, 18)
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19. A device for storing and displaying map data, the device comprising:
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a storage configured to store at least one first map segment representing a geographic area at a first zoom level and configured to store at least one map segment representing a portion of the geographic area at a second zoom level;
a display configured to display at least the at least one first segment and to visually represent the portion of the geographic area represented by the at least one stored map segment, wherein the at least one stored map segment is visually represented differently on the display from portions of the geographic area that correspond to map segments at the second zoom level that are absent from the storage; and
a processor configured to control display of the map segments. - View Dependent Claims (20, 21, 22)
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Specification