Portable GPS type distance meter,portable GPS type distance/speed meter,and a method of measuring distance and speed

摘要

A portable distance/speed meter has two methods 16,18 of calculating the travel speed or travel distance of a user. The first method, using GPS signals received 10 from the GPS satellite system, is used when a reception state of the GPS transmissions is judged 12 to be good, while when the reception state is judged to be poor, the travel distance and speed is calculated using a second method 18, based on stride data acquired earlier, and stored in storage means 17. The stride data may be inputted by the user via inputting means 22. In this, the stride length of the user, and the number of steps measured using body movement detecting means 11 are used to calculate the travel speed and travel distance. The device may be particularly used by walkers or runners in the form of a compact wristwatch with the information displayed by display means 23.