ELECTRONIC ENDOSCOPE DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce the number of isolation elements between a patient circuit and a secondary circuit and to lower the using frequency of the isolation elements. SOLUTION: The video signals of two channels from CCD 5 are given to memories 26 and 27 from CDS 22 and 23 through A/D converters 24 and 25. The memories 26 and 27 alternately output the video signal of each stored channel. Thus, the video signals of the two channels stored in the memories 26 and 27 are time-division-multiplexed and supplied for the secondary circuit through the photocoupler 28 of one system. Thus, the number of the isolation elements is reduced.