Optical communication interface module for universal serial bus
US6950610B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2001 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/426
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical communication interface module includes a combined transmission module and a combined reception module. The combined transmission module processes a D+ electrical data signal and a D− electrical data signal, and combines and transmits the same through a first optical fiber line. The combined reception module processes the D+ and D− electrical data signals combined and received through a second optical fiber line, and applies the D+ and D− electrical data signals to a D+ port and D− port, respectively. The combined transmission module includes a transmission driving circuit that generates an optical data signal corresponding to one of the D+ and D− electrical data signals, and a transmission control switch that controls the optical data signal to have a level of brightness higher than a first set value while the D+ and D− electrical data signals are both maintained at a logic ‘low’ state, and controls the transmission driving circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.