OPTRAN

INFRARED TRANSMITTING AND RECEIVING SYSTEMS FOR COMMUNICATING BETWEEN DIGITAL COMPUTERS WHERE THE DATA IS TRANSMITTED VIA OPTICAL TRANSMISSION PATHS AND PARTS THEREFOR INCLUDING CLOCK CIRCUITS FOR TIMING DIGITAL DATA, INTERFACE CIRCUITS FOR INTERCONNECTING DIGITAL COMPUTERS WITH THE DATA COMMUNICATIONS SYSTEM; MODULATOR CIRCUITS FOR ENCODING DIGITAL DATA ON OPTICAL CARRIER SIGNALS; AND OPTICAL ENERGY TRANSMITTERS AND RECEIVERS