Navigation system with licensing function
First Claim
1. A navigation system comprising:
- a storage medium interfacing unit that interfaces with a storage medium that stores data;
a detection unit that detects a detection item including at least one of a time and a position;
an information item generation unit that generates an information item based on the detected detection item;
a writing unit that writes the generated information item in the storage medium and in an internal memory of the system when the detection unit detects the detection item first after the system is started first;
a use determination unit that determines whether an information item written in the storage medium and an information item written in the internal memory accord with each other, when data stored in the storage medium is used; and
a licensing unit that gives a license for use of the data stored in the storage medium when it is determined that the information item written in the storage medium and the information item written in the internal memory accord with each other.
1 Assignment
0 Petitions
Accused Products
Abstract
When a navigation system is started for the first time, a time/position information item unique to each navigation system is generated based on a position and time detected for the first time by a GPS receiver of a position detector. This generated time/position information item is stored both in a hard disk of a map data storage device and in an internal memory. When a starting process performed at starting of the system, it is determined whether time/position information items stored in the hard disk and the internal memory accord with each other. When both information items are determined to be according with each other, map data stored in the hard disk is given a license for use.
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Citations
11 Claims
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1. A navigation system comprising:
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a storage medium interfacing unit that interfaces with a storage medium that stores data;
a detection unit that detects a detection item including at least one of a time and a position;
an information item generation unit that generates an information item based on the detected detection item;
a writing unit that writes the generated information item in the storage medium and in an internal memory of the system when the detection unit detects the detection item first after the system is started first;
a use determination unit that determines whether an information item written in the storage medium and an information item written in the internal memory accord with each other, when data stored in the storage medium is used; and
a licensing unit that gives a license for use of the data stored in the storage medium when it is determined that the information item written in the storage medium and the information item written in the internal memory accord with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification