| 摘要 |
PROBLEM TO BE SOLVED: To provide a gradation control technique which can improve the smoothness of the gradation expression of an LED provided on a game machine. SOLUTION: A gradation control LSI 4300 of a pachinko machine 10 is provided with a gradation value memory part 4334 for storing a gradation value table 540, a sequence memory part 4336 for storing a sequence table 560, an access management circuit 4320 which receives a gradation command made to specify the combination of the gradation value table 540 and the sequence table 560 from a peripheral control CPU 4210, a pattern generation circuit 4330 for generating a gradation pattern from the gradation command and a pulse control circuit 4355 which switches the pulse width of a current to be supplied to the LED 462 according to the gradation pattern. COPYRIGHT: (C)2008,JPO&INPIT
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