Intra-train communication network
US6680918B1 · kind B1 · utility
18Cited by
13References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1999 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Sep 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An intra-train communication network comprising a plurality of transceiver units on individual vehicles of the train. A master unit initially transmits queries, including a first ID from a first group of ID's, to the slave units using a second ID from a second group of ID's, and subsequently transmits queries using the first ID from the first group. The slave units initially listens for queries using the second ID from the second group, responds using the second ID and subsequently listens for and responds using the first ID.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.