Token ring speed detector
US5442629A · kind A · utility
21Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Feb 24, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Dual detection paths containing speed recognition devices automatically determine the rate at which data is being transmitted on a multi-rate digital data communications network such as a token ring network. The multiple detection paths operate simultaneously with each detection path provided with a Phase Lock Loop (PLL) and a pattern recognition device. The PLL and its associated pattern recognition device are made to operate at one of the known ring speeds. The ring speed is determined by the detection path which is able to recognize a predetermined data pattern from the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.