Bidirectional interface
US6636072B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2000 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | May 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a data transmission device between two separate lines. This device comprises a real terminal (TRA, TRB) and a virtual terminal (TVA, TVB) associated with each of the lines. The state of a real terminal is that of the associated line. The state of a virtual terminal indicates whether the associated line is transmitting or able to receive a data. Each real terminal associated with a line controls the state of the virtual terminal associated with the other line by means of a control signal (COM), while said virtual terminal controls the state of its associated real terminal (CTRL), and accordingly of the line. A virtual terminal associated with a receiving line receives the control signal (COM) coming from the real terminal associated with the other line and inhibits (INH) the real terminal associated with this receiving line. The inhibited real terminal of the receiving line accordingly is no longer capable of sending a control signal (COM) as long as the other line is transmitting. According to the invention, two lines cannot transmit at the same time, while the switching of the transmission device is fast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.