| 摘要 |
PURPOSE:To allow the displays of time display panels to coincide with each other, by connecting the time display panels operated by one operation panel by a multiple connection system using synchronous lines and detecting the delay of an own internal synchronous signal to correct display. CONSTITUTION:A large number of time display panels 12 are connected to one operation pane 11 by a multiple connection system. Each of the time display panels 12 has a timing means 13, a display means 14 and a delay detection means 15. The time display panels 12 simultaneously start timing by the operation panel 11. In synchronous lines, the fastest synchronous line signals among the signals of the timing means 13 subjected to multiple connection is outputted and compared with an own internal synchronous signal by the delay detection means 15 to detect delay and the display of the display means 14 is corrected by the detection signal.
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