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

FIELD: optical (including digital) communications conducted in infrared optical spectrum range.

SUBSTANCE: proposed method includes optical signal generation across transmitter light-emitting diode by assigning control voltage pulse thereon and transfer of focused optical beam to receiving device. Information is transferred using high-power light-emitting diode; optical signal is generated, control-voltage pulses being assigned across light-emitting diode with modulation depth ranging between 25 and 95%, including generation of desired current "0"; light-emitting diode is rapidly set to "1" due to specified waveform of control pulses. Proposed information transceiving device has power unit, mediaconverter, optical signal receiver with photodiode, and transmitter with light-emitting diode equipped with optical lenses. Light-emitting diode is high-power device; transmitter is equipped with first resistor for specifying modulation percentage of light-emitting diode operating current, second resistor for limiting peak current of light-emitting diode, and third resistor for generating light-emitting diode operating current, all these resistors being connected in series with light-emitting diode.

EFFECT: enhanced noise immunity of communication system and, consequently, extended communication range at desired coefficient of availability.

9 cl, 4 dwg