| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which can make highly colorful lamp performances possible simply without complicating control cicuits and methods. SOLUTION: An LED driver 31 is so arranged as to enable the reception of a contrast data for regulating the contrast level and an ON/OFF data for regulating the presence of lighting. In drive circuits DG1-DG3 having the LED drivers placed on it, a single signal line for transmitting drive data and a single signal line for transmitting a shift clock synchronizing the drive data are connected to each of performance control boards 51. A signal line of a latch signal and a signal line of a mode control signal are connected in parallel to all of the drive circuits. In a timer interrupt processing of the performance control boards 51, the mode control signals are output to all of the drive ICs provided per system and then, the contrast data and the shift clock synchronizing it are output sequentially using separate signal lines to the drive circuits DG1-DG3 of the respective systems to designate the lighting modes of all the lamps. COPYRIGHT: (C)2009,JPO&INPIT
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