Title:
PORTABLE GPS RECEIVER
Document Type and Number:
Japanese Patent JP3114013
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately measure the moving distance and, when a pre-set movement distance point is reached, to automatically display and memorize an time information and a human body information, and also to calculate and display a time at which a pre-set predicted moving distance is reached.
SOLUTION: A GPS(global positioning system) signal reception part 102 measures a Doppler frequency of a carrier wave, and outputs a 3-dimensional speed vector of a carrier to a CPU100. At the CPU100, the accumulated distance is calculated based on are reception interval and speed data, and the accumulated distance stored in a RAM104 is compared to a distance point data stored in the RAM104 in advance, and when the accumulated distance exceeds the distance point data, a lap time is calculated based on a timing data sent from a timing circuit 105, for display on a display part 105. Further, the CPU100 calculates a time before a predicted moving distance is reached based on the speed data, the accumulated distance, and a predicted moving distance stored in the RAM104, and displays on the display part 106.
Inventors:
Keisuke Tsubata
Chiaki Nakamura
Hiroyuki Odagiri
Kazumi Sakumoto
Chiaki Nakamura
Hiroyuki Odagiri
Kazumi Sakumoto
Application Number:
JP886198A
Publication Date:
December 04, 2000
Filing Date:
January 20, 1998
Export Citation:
Assignee:
Seiko Instruments Inc.
International Classes:
G01C21/00; G01C22/02; G01C22/00; G01S19/14; G01S19/24; A63B24/00; (IPC1-7): G01C21/00; G01C22/00; G01S5/14
Domestic Patent References:
| JP8336512A | ||||
| JP60104285A | ||||
| JP4370778A | ||||
| JP636393U |
Attorney, Agent or Firm:
Keinosuke Hayashi