Positional information providing system, positional...

G - Physics – 01 – S

Patent

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Details

G01S 5/14 (2006.01) G01C 21/00 (2006.01) G08G 1/005 (2006.01)

Patent

CA 2649110

To provide positional information at a place where no radio waves reach. The process executed by a positional information providing apparatus comprises a step of acquiring a received position determination signal (S610); a step of determining the source of transmitting the position determination signal (S612); a step of acquiring a navigation message included in the position determination signal (S622) when the source of transmitting the position determination signal exists outdoors; a step of executing a processing for calculating, based on the signal of the immediately preceding step, the position (S624); a step of acquiring a message data from the position determination signal (S630) when the source of transmitting the position determination signal exists indoors; a step of acquiring coordinate values from the data (S632); and a step of displaying, based on the coordinate values, the positional information (S650).

L'invention concerne la production d'informations positionnelles à un endroit où aucune onde radio ne parvient. Le processus exécuté par un appareil de production d'informations positionnelles comprend les étapes consistant à acquérir un signal reçu de détermination de position (S610) ; déterminer de la source d'émission du signal de détermination de position (S612) ; acquérir un message de navigation inclus dans le signal de détermination de position (S622) lorsque la source d'émission du signal de détermination de position se trouve à l'extérieur ; exécuter un traitement pour calculer, sur la base du signal de l'étape immédiatement précédente, la position (S624) ; acquérir des données de message à partir du signal de détermination de position (S630) lorsque la source d'émission du signal de détermination de position se trouve à l'intérieur ; acquérir des valeurs de coordonnées à partir des données (S632) ; et afficher, sur la base des valeurs de coordonnées, les informations positionnelles (S650).

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