Time synchronizing method and apparatus based on time stamp
US7668151B2 · kind B2 · utility
8Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jan 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2803
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Provided are a time synchronizing method and apparatus based on a time stamp. The time synchronizing method includes: transmitting a local time stamp based on a free-running local clock to a master node; receiving a response time stamp from the master node; calculating a delta time value based on the response time stamp; filtering the delta-time using a digital low pass filter running at the free-running local clock rate; and adjusting a local clock time based on the filtered delta time value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.