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Title:
DISTANCE-MEASURING APPARATUS FOR DISPLAY, AND METHOD FOR DISPLAYING DISTANCE
Document Type and Number:
Japanese Patent JP3840629
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a technique whereby distance errors are eliminated without requiring much time and labor, and distance can be displayed smoothly.
SOLUTION: The distance-measuring apparatus for display includes a distance table 3 in which a latitude and a longitude, and a distance from a start point for every predetermined interval are stored to correspond to each other, a GPS reception part 1, a latitude/longitude-calculating part 3, a GPS distance- calculating part 4, a display distance processing part 7 for adding a predetermined distance to the present distance for display, thereby updating the distance for display with an update timing of a predetermined time or predetermined distance, and an update timing adjusting part 8, which compares a distance searched for by the GPS distance-calculating part with the present distance for display by the update timing, and shortens the update timing, when the searched distance is larger by a predetermined distance or more than the present distance for display, or extends the update timing when the searched distance is smaller than the present distance for display, thereby adjusting the update timing.


Inventors:
Kiyoyuki Doi
Seiichi Furukawa
Sakaguchi Hironao
Application Number:
JP25026399A
Publication Date:
November 01, 2006
Filing Date:
September 03, 1999
Export Citation:
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Assignee:
Nippon Television Network Co., Ltd.
International Classes:
G01C22/00; G01S19/14; (IPC1-7): G01C22/00; G01S5/14
Domestic Patent References:
JP5018776A
JP5322593A
JP7035562A
JP7229754A
JP7260502A
JP7306056A
JP8075485A
JP8178680A
JP8334335A
JP9119842A
JP11173870A
Attorney, Agent or Firm:
Katsumi Utaka