Title:
光通信送受信器及びデータ送受信方法
Document Type and Number:
Japanese Patent JP2005522089
Kind Code:
A
Abstract:
An optical communications transceiver includes an LED coupled in series with a resistor. A microprocessor has one I/O pin connected to the LED. In a first mode or transmit mode, the LED is periodically driving in forward bias to emit light to transmit data. In a second or receive mode, the LED is periodically not driven in reverse bias, e.g., reverse bias or zero bias. Then, the LED is allowed to change charge of the capacitance of the LED's junction using a photo-current. The change in charge is measured using a timer. When the change in charge exceeds a predetermined threshold, input light is sensed. Thus, the LED can be used to receive data in the second mode.
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Inventors:
Diets, Paul H
Jeraznis, William Es
Lee, Darren El
Vanucci, Giovanni
Jeraznis, William Es
Lee, Darren El
Vanucci, Giovanni
Application Number:
JP2003581384A
Publication Date:
July 21, 2005
Filing Date:
March 28, 2003
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H01L33/00; H01L31/12; H04B10/43; (IPC1-7): H04B10/04; H01L33/00; H04B10/06; H04B10/10; H04B10/105; H04B10/14; H04B10/22; H04B10/24; H04B10/26; H04B10/28
Attorney, Agent or Firm:
Michiteru Soga
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order