| 摘要 |
PROBLEM TO BE SOLVED: To provide an LCD console having a device which automatically corrects LCD contrast that is varied by the fluctuation of a power supply voltage being supplied from a controller main body. SOLUTION: An LCD console 1 is provided with a console control circuit 32 and an LCD module 33. The circuit 32 includes a reference voltage IC35 which is used to detect fluctuation of a supply voltage from a controller main body 2 and a microcomputer 36 which incorporates an AD converter. The power supply voltage being supplied from the main body is inputted into the AD conversion reference voltage input terminals of the microcomputer 36 and the reference voltage generated by the IC35 is inputted into the AD conversion analog input terminals of the microcomputer 36. The microcomputer 36 determines an electronic volume value while referring to a correction table based on an AD conversion result and transmits the determined value to a contrast adjusting electronic volume 38 of the module 33. COPYRIGHT: (C)2004,JPO
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