Optical data communication system
US6031949A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1997 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Mar 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/502
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical slip ring system (1) has a rotor interface (2) which can bolt on to a high speed rotor in a modular manner. The rotor interface (2) has circular circuit boards (7) containing the necessary drive circuits and power supply circuits for transducers mounted on the rotor. The drive circuit on the boards (7) drive three rings of emitter LEDs (9). The drive is frequency modulated and there are a number of transducers associated with each ring of emitter LEDs (9). These signals are frequency division multiplexed to ensure real time processing takes place. A fixed support (3) has a single receiver LED (15) associated with each ring of emitter LEDs (9). Contactless power is provided by an inductive power supply having a primary winding (16) on the fixed support bracket (3) and a secondary winding (10) on the rotor interface (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.