Method and equipment for bidirectional data transmission (full-duplex)
US5469285A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/1476
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
With this method the performance of full-duplex systems can be achieved with transmission of information using infra-red light or radio (or via other transmission media not involving hard wiring). For this purpose the two datastreams to be transmitted in opposite directions are brought to the same transmission rate. The time period (ta) between the beginnings of successive bits of a datastream are split during transmission into two equal halves (tb, tc), whereby the bits are transmitted during the first half (tb). A transmitting communicator switches to receive immediately after the transmission of a bit, whereas a receiving communicator switches to transmit after the receipt of a bit if it needs to send information, so that the transmitted bits of one datastream are sent during the second half (tc) of the opposing datastream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.