Electronic timepiece

Patent metadata

Field	Value
Publication number	US-10969225-B2
Application number	US-201816225957-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Mar 7, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An electronic timepiece includes an indicating hand, a distance display hand, a GPS receiver that receives satellite signals transmitted from GPS satellites, a magnetic sensor, and a controller. The controller determines the direction to a destination on the basis of the satellite signals received by the GPS receiver, the output from the magnetic sensor, and destination information representing the position of the destination, determines the distance to the destination on the basis of the satellite signals and the destination information, causes the indicating hand to indicate the direction to the destination, and causes the distance display hand to display the distance to the destination.

First claim

What is claimed is:

1. An electronic timepiece comprising:
a first hand;
a second hand;
a magnetic sensor; and
a controller that calculates coordinates of a current position, reads out coordinates of a destination position from a storage, determines a direction toward the destination position from the current position based on the coordinates of the current position, the coordinates of the destination position, and an output from the magnetic sensor, and determines a distance between the current position and the destination position based on the coordinates of the current position and the coordinates of the destination position,
wherein the first hand indicates the direction, and the second hand indicates the distance.

2. An electronic timepiece comprising:
a first hand;
a second hand; and
a controller that calculates coordinates of a current position, reads out coordinates of a destination position from a storage, and determines a direction toward the destination position from the current position and a distance between the current position and the destination position based on the coordinates of the current position and the coordinates of the destination position,
wherein the first hand indicates the direction, and the second hand indicates the distance.

3. A method for indicating a direction and a distance, the method comprising:
detecting, by a controller, that a navigation start switch has been continuously pressed down for a predetermined period;
calculating, by the controller, coordinates of a current position;
reading out, by the controller, coordinates of a destination position from a storage;
determining, by the controller, a direction toward a destination position from the current position and a distance between the current position and the destination position, based on the coordinates of the current position and the coordinates of the destination position; and
causing, by the controller, a first hand to indicate the direction and a second hand to indicate the distance.

4. The method for indicating a direction and a distance of claim 3 , further comprising:
updating, by the controller, indication of the direction and indication of the distance on a regular basis in response to determining the direction and the distance on a regular basis.

Assignees

• Seiko Epson Corp

Inventors

• Nozawa Toshiyuki

Classifications

• G01C21/20 Primary

  Instruments for performing navigational calculations (G01C21/24, G01C21/26 take precedence) · CPC title

• G04R20/02

  the radio signal being sent by a satellite, e.g. GPS · CPC title

• G01C17/14

  by reference marks, e.g. for ships' compasses · CPC title

• G01C21/005 Primary

  with correlation of navigation data from several sources, e.g. map or contour matching (G01C21/30 takes precedence) · CPC title

• G04B47/06

  with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass {(in combination with a tachometer which winds up the clockwork G04B5/206)} · CPC title