Transmitting and receiving circuit and transmitting and receiving method
US7177283B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jan 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitting and receiving circuit includes an optical circuit for transmitting and receiving data from and to a facing node, and a speed negotiation state machine for executing a speed negotiation to find a maximum value of a data transfer speed in a channel between nodes before data transfer to the facing node, and setting the thus obtained maximum value as a maximum transfer speed of each transceiver. With this, the speed negotiation is executed with the facing node for each transceiver before data transfer, and the transfer speed of the node is determined by the result of the speed negotiation, so that it is possible to provide a transmitting and receiving circuit and a transmitting and receiving method such that data transfer becomes possible even in a channel of poor quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.