Method and apparatus for restarting a GPS-based timing system without a GPS signal
US7064619B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2005 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | May 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R40/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for restarting a GPS-based timing system without a GPS signal is provided. More specifically, there is provided a system comprising an antenna, a GPS receiver coupled to the antenna and configured to generate a GPS traceable timing signal based on a GPS transmission, and a timing system coupled to the GPS receiver, the timing system comprising a holdover oscillator, timing circuitry coupled to the holdover oscillator and configured to receive the GPS traceable timing signal and to calculate a correction factor for the holdover oscillator, and a non-volatile memory coupled to the timing circuitry, wherein the timing circuitry is configured to store the correction factor on the non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.