Optical communication system
US5046137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Jan 23, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/278
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical communication system is provided in which a digital data bus is used as a transmission line. Each terminal equipment measures an optical output level to enable the terminal equipment to receive a packet transmitted from the terminal equipment itself and informs other terminal equipments of the measured optical output level. Each terminal equipment establishes its optical output level to be the largest one of the levels informed thereto. Further, each terminal equipment measures the delay time of an acknowledge bit transmitted from the other terminal equipments to thereby shift the sampling point by the mean value of the measured delay time, so that bus connection of terminal equipments through optical fiber can be facilitated, channel access control based on CSMA/CD can be performed, and wiring between the terminal equipments can be conserved by performing multiple transmission of audio signals and video signals as well as digital data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.