LECTURER SIDE APPARATUS AND TRAINEE SIDE APPARATUS IN INFRARED RAY VIDEO IMAGE TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an infrared ray video image transmission system suitable for lectures or the like which cordlessly transmits audio and video signals to many monitor display apparatuses through infrared ray communication thereby being capable of distributing video and audio.

SOLUTION: The infrared ray video image transmission system comprises a lecturer side apparatus provided with: a radiator 25 that receives an audio signal and a video signal outputted from a lecturer side and transmits a multiplexed infrared ray corresponding to the signals; a microphone reception demodulator 36 that receives an infrared ray transmitted from a trainee side to obtain a microphone reply signal; and a questionnaire collection apparatus 31 that collects questionnaire signals, and comprises a trainee side apparatus provided with: a light receiving unit 42 for receiving an infrared ray; the monitor display apparatus 64 for displaying an image from the received infrared ray; a receiver 65 for reproducing an audio signal from the received infrared ray; and a light emitting unit 41 for transmitting the multiplexed infrared ray corresponding to an output signal from a microphone 52 picking up voice of a trainee and an output signal from a ten-key 53 operated by the trainee.

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