Localizing a remote event timestamp from a network device with an independent clock method and apparatus
US7496686B2 · kind B2 · utility
28Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Jan 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A timestamp localization method and device includes two processors with independent clocks connected to a communication network. Two messages are exchanged between the processors. First a request message is sent with a transmit timestamp. Second, a reply message is sent back with receive, originate, transmit and remote timestamps. Then the remote timestamp is converted to a local timestamp using an algorithm and the timestamps from the reply message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.