METHOD AND DEVICE FOR TRANSCEIVING INFORMATION Russian patent published in 2007 - IPC H04B10/10 

FIELD: optical communications including infrared digital communications.

SUBSTANCE: proposed information transceiving method includes generation of optical signal across transmitter light-emitting diode by setting control voltage pulse across the latter and conveying focused optical beam to receiving device. Light-emitting diode (LED) used for the purpose has enhanced power and its control voltage pulse during initial moment is set at current higher than its operating current and at length sufficient to quickly bring LED to 100% emitting power. Then control voltage is reduced and maintained at level sufficient to keep LED in this condition. Proposed device has power unit, mediaconverter, optical signal receiver with photodiode, and transmitter with light-emitting diode, all provided with lenses. LED is characterized by enhanced power; transmitter is provided with first resistor for generating LED operating current and second resistor for limiting peak current, both connected in series with LED; switch inserted between them is coupled with signal level converter. LED initial pulse current generating capacitor is disposed on LED side in parallel with first resistor.

EFFECT: enhanced noise immunity of optical communications and, hence, its range, at desired factor of availability; reduced cost for establishing high-quality communications.

6 cl, 2 dwg