PRE-CACHING OF NAVIGATION CONTENT BASED ON CELLULAR NETWORK COVERAGE
First Claim
1. A navigation system that caches map data associated with wireless white spots, the system comprising:
- map data memory;
a position sensor that determines a present location of the navigation system and provides navigation system position data indicative thereof;
a wireless transmitter that transmits the navigation system position data;
a wireless receiver that receives wireless data including wireless white spot map data and wireless non-white spot map data in response to the transmitted navigation system position data and stores the received wireless white spot map data and the wireless non-white spot map data in the map data memory; and
a processor that receives the navigation system position signal and forms a map image based upon the received wireless white spot map data and the navigation system position data when the wireless receiver is not receiving the wireless data.
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Abstract
Embodiments are disclosed for caching navigation content. An example navigation system includes map data memory, a position sensor that determines the present location of the navigation system and provides a navigation system position signal indicative thereof, a wireless transmitter that transmits the navigation system position data, and a wireless receiver that receives cellular data including cellular white spot map data and cellular non-white spot map data in response to the transmitted navigation system position data and stores the received cellular white spot map data and the cellular non-white spot map data in the map data memory. The example navigation system also includes a processor that receives the navigation system position signal and forms a map image based upon received cellular white spot map data when the wireless receiver is not receiving cellular data.
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Citations
20 Claims
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1. A navigation system that caches map data associated with wireless white spots, the system comprising:
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map data memory; a position sensor that determines a present location of the navigation system and provides navigation system position data indicative thereof; a wireless transmitter that transmits the navigation system position data; a wireless receiver that receives wireless data including wireless white spot map data and wireless non-white spot map data in response to the transmitted navigation system position data and stores the received wireless white spot map data and the wireless non-white spot map data in the map data memory; and a processor that receives the navigation system position signal and forms a map image based upon the received wireless white spot map data and the navigation system position data when the wireless receiver is not receiving the wireless data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of caching, in a navigation system map data memory device, navigation content that is associated with cellular white spots, the method comprising:
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determining a present location of the navigation system and providing a vehicle position signal indicative thereof; wirelessly transmitting the navigation system position data; wirelessly receiving cellular data that comprises cellular white spot map data and cellular non-white spot map data in response to the transmitted navigation system position data, and storing the received cellular white spot map data and the cellular non-white spot map data in the map data memory device; and forming a map image based upon received cellular white spot map data and the navigation system position signal, when the wireless receiver is in a cellular white spot. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An in-vehicle computing system comprising:
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one or more sensors; a network interface coupled to a cloud-based map database; a user input interface configured to receive user input from one or more user input devices; a processor; and a storage device storing map data and instructions executable by the processor to; determine a current location based on inputs from the one or more sensors; receive a destination input from a user via the one or more user input devices; determine a route based on the current location and the destination; generate a map image of the route; determine a number of white spots along the route; and download white spot map data, an amount of white spot map data that is downloaded being based on the number of white spots along the route. - View Dependent Claims (17, 18, 19, 20)
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Specification