NAVIGATION APPARATUS

PROBLEM TO BE SOLVED: To provide a navigation apparatus by which an advance direction and a travelling speed are displayed even in a one-shot positioning operation. SOLUTION: A portable navigation apparatus which positions the latitude and the longitude of a present location by using a GPS is provid...

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Bibliographic Details
Main Authors KAWAI KOZO, OKUNO KANAME
Format Patent
LanguageEnglish
Published 04.11.1997
Edition6
Subjects
ADVERTISING
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CRYPTOGRAPHY
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
GLOBES
GYROSCOPIC INSTRUMENTS
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
PLANETARIA
RADIO DIRECTION-FINDING
RADIO NAVIGATION
SEALS
SURVEYING
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a navigation apparatus by which an advance direction and a travelling speed are displayed even in a one-shot positioning operation. SOLUTION: A portable navigation apparatus which positions the latitude and the longitude of a present location by using a GPS is provided with a one-shot positioning mode in which a positioning operation is stopped in a point of time when the positioning operation is completed. The direction of a position by a positioned result in a present one-shot positioning operation with reference to a position by a positioned result in a previous one-shot positioning operation is regarded as an advance direction. A value in which the distance between the position coming from the positioned result by the previous one-shot positioning operation and the position coming from the present positioned result is divided by the time elapsed up to the time of the present one-shot positioning operation from the time of the previous one-shot positioning operation is found as a travelling speed so as to be displayed. Though, an instantaneous speed and an advance direction in the point of time of a positioning operation are not obtained, an advance direction and a travelling speed up to a present positioning operation from a previous positioning operation can be obtained in a one-shot positioning operation.
Bibliography:Application Number: JP19960101656