| 摘要 |
PROBLEM TO BE SOLVED: To flexibly dispose operation keys which are pressed by a user for inputting an operation instruction.SOLUTION: Operation control devices 10 and 74U-77U comprise: operation keys 74-77 which are pressed by the user; oscillation power generation parts 741, 751, 761 and 771 for converting oscillation in the case where the operation keys 74-77 are pressed, into power; antenna circuits 742, 752, 762 and 772 in which a coil D1 and a capacitor D2 are connected in parallel, for transmitting a wireless signal WS of a frequency (f) which is determined by inductance L of the coil D1 and electrostatic capacitance C of the capacitor D2, from the coil D1 in the case where power is supplied from the oscillation power generation parts 741, 751, 761 and 771; a receive antenna part 12 for receiving the wireless signal WS; and an instruction receiving part 14 for receiving an operation instruction which is made correspondent to the wireless signal WS beforehand, when the wireless signal WS is received by the receive antenna part 12. |
