| 摘要 |
PURPOSE:To improve the detection precision of the touch state of a key and to vary characteristics of the touch corresponding to the key by starting arithmetic operation for touch data a specific time after a 1st switch is turned ON. CONSTITUTION:A key phase control means 15 which processes data of respective phase signals outputted by an SDI processing means 13 and an SD2 processing means 14 respectively is connected to the SDI processing means 13 and SD2 processing means 14. Further, a touch data arithmetic means 16 which performs the arithmetic processing of the touch state of keys according to the data from the means 15 is connected to the means 15. The key phase control means 15 performs control so that the arithmetic operation of the touch data arithmetic means 16 is performed a specific time after the 1st key switch is turned ON between the time when the 1st switch is turned ON and the time when a 2nd switch will be turned ON. The control may be performed by reading plural kinds of initial values corresponding to the keys or setting delay data by desired sound ranges instead of setting delay data, key by key, in a preset data memory. |
