Navigation system
First Claim
1. A navigation system for use in a motor vehicle, comprising:
- a data input unit through which a user enters destination position data;
a first non-volatile memory unit that stores a basic navigation database including road map information;
a communication unit that receives supplemental navigation data including digital road map information, and provides received supplemental navigation data;
a second non-volatile memory unit that receives and stores the received supplemental navigation data;
a navigation computer that receives start position data and the received destination position data, and computes driving directions between the starting position and the destination position using information from the basic navigation database and the received supplemental navigation data; and
a data output unit for outputting the driving directions to the user.
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Accused Products
Abstract
A navigation system for use in a motor vehicle receives starting position data and destination position data and computes driving directions between the starting and destination positions. The navigation system includes a first memory unit that stores a basic navigation database including road map information, and a receiver that receives supplemental navigation data including digital road maps, and provides received supplemental navigation data that is stored in a second memory unit. A navigation computer computes driving directions between the starting position and the destination position using information from the basic navigation database and the received supplemental navigation data, and outputs driving directions for presentation to a user.
31 Citations
24 Claims
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1. A navigation system for use in a motor vehicle, comprising:
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a data input unit through which a user enters destination position data; a first non-volatile memory unit that stores a basic navigation database including road map information; a communication unit that receives supplemental navigation data including digital road map information, and provides received supplemental navigation data; a second non-volatile memory unit that receives and stores the received supplemental navigation data; a navigation computer that receives start position data and the received destination position data, and computes driving directions between the starting position and the destination position using information from the basic navigation database and the received supplemental navigation data; and a data output unit for outputting the driving directions to the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for data management of a motor vehicle navigation system, comprising:
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receiving destination position data through a data input unit, which is connected to a navigation computer; calculating driving routes in the navigation computer between a current position of the motor vehicle and the destination position data; transmitting to the user the driving routes calculated by the navigation computer; storing in a first non-volatile memory unit connected to the navigation computer, a basic database that includes digital road map information, which is needed to calculate the driving route; receiving data supplementary to the basic database including road map information over a network connection to a communication unit that is connected to the navigation computer; and storing the received supplementary data in a second non-volatile memory unit that is connected to the navigation computer.
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24. A navigation system for use in a motor vehicle that receives destination position data and computes driving directions between a starting position and the destination position, the navigation system comprising:
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a first non-volatile memory unit that stores a basic navigation database including road map information; an RF receiver that receives supplemental navigation data including digital road maps, and provides received supplemental navigation data; a second non-volatile memory unit that receives and stores the received supplemental navigation data; means for receiving for computing driving directions between the starting position and the destination position using information from the basic navigation database and the received supplemental navigation data; and means for outputting the driving directions to the user.
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Specification