| 摘要 |
A reproduction device (10) has a rotatable operation disk part (54) for inputting related to reading of data stored in a RAM (20), a capacitance sensor section (28) which outputs a sensor value expressing the change of a capacitance according to depression of the operation disk part (54), a storage part (13) which stores a reference value corresponding to the sensor value obtained while the operation disk part (54) is not depressed, and a control part (12) which judges the presence/absence of the depression of the operation disk part (54) on the basis of a vector quantity being a relative value obtained from the difference between the sensor value from the capacitance sensor section (28) and the reference value stored in the storage part (13).
|
