| 摘要 |
PROBLEM TO BE SOLVED: To eliminate differences among plural videos, to simplify the adjustment of A/D converters and to dispense with the video distributor needed in the conventional practice in a multi-video display device. SOLUTION: An A/D converter 20, an SAP converter 21, a changeover switch 22, a pixel converter 23, a digital display device 25 and a P/S converter 24 are provided respectively in each video display device 26 and the changeover switch 22 of the first video display device 26 is connected to the A/D converter 20 side and as to video display devices 26 to 26 from the second device to the Nth device, the changeover switch 22 is connected to the S/P converter 21 side and the output side of the P/S converter 24 of a front-stage video display device 26 is coupled to the input side of the S/P converter 21 of a rear-stage video display device 26 and multiple screens are displayed by inputting an analog video signal to the A/D converter 20 of the first video display device 26 and the converting of the inputted analog video signal into a digital video signal is performed only in the A/D converter 20 of the first video display device 26.
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