Title:
PORTABLE TYPE GPS RECEIVER
Document Type and Number:
Japanese Patent JP3008184
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a GPS (global position measuring system) receiver which can accurately measure a moving distance and a moving speed without continuous reception while enabling measuring of the moving distance and the moving speed even when a satellite can not be caught.
SOLUTION: A speed is determined once from a Doppler frequency of a carrier by a GPS receiver 600 to obtain a distance by a distance conversion means 106 from the speed. A walking detection means 100 detects walking to determine a stride by a stride computing means 104 from the number of steps accumulated by a number of step computing means 102 and the distance converted. Thereafter, a moving distance is determined by a distance computing means 103 and a moving speed by a speed computing means 105 from the stride and the number of steps detected and accumulated. Signals are periodically received by the GPS receiver 600 to update the stride.
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Inventors:
Kazumi Sakumoto
Hiroyuki Odagiri
Chiaki Nakamura
Keisuke Tsubata
Hiroyuki Odagiri
Chiaki Nakamura
Keisuke Tsubata
Application Number:
JP16974497A
Publication Date:
February 14, 2000
Filing Date:
June 26, 1997
Export Citation:
Assignee:
Seiko Instruments Inc.
International Classes:
G01C22/00; G01C21/00; G01S19/14; G01S19/24; (IPC1-7): G01C22/00; G01C21/00; G01S5/14
Domestic Patent References:
| JP8184459A |
Attorney, Agent or Firm:
Keinosuke Hayashi
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