POSITIONING DEVICE AND METHOD TO DETERMINE A POSITION USING AN ABSOLUTE POSITIONING SYSTEM AND A RELATIVE POSITIONING SYSTEM, COMPUTER PROGRAM AND A DATA CARRIER
First Claim
1. Positioning device arranged to determine a position using an absolute positioning system and a relative positioning system, the positioning device being arranged to workin a first mode, in which the position is determined using at least one of the absolute positioning system and the relative positioning system, andin a second mode, in which the position is determined using at least one of the relative positioning system and the absolute positioning system, in the first mode the absolute positioning system being weighted relatively more heavily than in the second mode to determine the position, and the positioning device being arranged to switch from the first mode to the second mode, the positioning device at least one of comprising and having access to a digital map database, and the switching from the first to the second mode being decided based on at least the determined position in combination with information stored in the digital map database.
1 Assignment
0 Petitions
Accused Products
Abstract
A positioning device is arranged to determine a position using an absolute positioning system and a relative positioning system. The positioning device is arranged, in at least one embodiment, to work in a first mode, in which the position is determined using the absolute positioning system and possibly the relative positioning system, and in a second mode, in which the position is determined using the relative positioning system and possibly the absolute positioning system. In the first mode the absolute positioning system is weighted more heavily than in the second mode and the positioning device is arranged to switch from the first to the second mode. The positioning device has access to a digital map database in at least one embodiment and the switch from the first to the second mode is decided based on at least the determined position in combination with information stored in the digital map database.
27 Citations
26 Claims
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1. Positioning device arranged to determine a position using an absolute positioning system and a relative positioning system, the positioning device being arranged to work
in a first mode, in which the position is determined using at least one of the absolute positioning system and the relative positioning system, and in a second mode, in which the position is determined using at least one of the relative positioning system and the absolute positioning system, in the first mode the absolute positioning system being weighted relatively more heavily than in the second mode to determine the position, and the positioning device being arranged to switch from the first mode to the second mode, the positioning device at least one of comprising and having access to a digital map database, and the switching from the first to the second mode being decided based on at least the determined position in combination with information stored in the digital map database.
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12. Method for determining a position, comprising:
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determining a position using an absolute positioning system and a relative positioning system, the position being determinable in a first mode, in which the position is determined using at least one of the absolute positioning system and the relative positioning system, and in a second mode, in which the position is determined using at least one of the relative positioning system and the absolute positioning system, in the first mode the absolute positioning system being weighted relatively more heavily to determine the position than in the second mode; deciding whether or not to switch from the first mode to the second mode based the determined position in combination with information stored in a digital map database; and switching from the first mode to the second mode if it is decided to switch. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26)
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Specification