| 摘要 |
PROBLEM TO BE SOLVED: To enhance the practicality, flexibility and versatility in the case of concretely constructing a system matching with various purposes by lining up/arranging lots of pole type display units at a proper interval. SOLUTION: A function for recognizing/acquiring one column part of image data allocated to own unit among demodulating signals based on a unit ID is realized by a counter 9, a unit ID setting device 10, a comparator circuit 11 and a gate 12. A data signal and a clock signal outputted from a demodulator circuit 6 are inputted to a shift register 1, the image data of every one column part are distributed in order to 32 sets of display units and held in the shift register 1, respectively. Each of the display units/detects a synchronizing sign signal transmitted from a display controller 60, the data in the shift register 1 are latched to a latch circuit 2 with this timing in all the display units and a driver 3 controls to drive lamps L1-L16 according to the latched data.
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