Portable GPS signal receiving apparatus
US6246362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A GPS signal receiving section measures a Doppler frequency of a carrier wave to output a three-dimensional velocity vector to a CPU 100. The CPU 100 calculates a cumulative distance from a signal receiving interval and velocity data to compare between the cumulative distance stored in a RAM 104 and the distance point data previously stored in the RAM 104. Where the cumulative distance exceeds the distance point data, a lap time is calculated and displayed on a display section 106 based on the time count data sent from the time count circuit 105. Further, the CPU 100 calculates and displays on the display section 106 a time to arrive at the predetermined moving distance from the velocity data, the cumulative distance and the predetermined moving distance stored in the RAM 104.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.