Operation Input Device With Enhanced Touch Point Detection With A Display Device

Abstract: An operation input device includes: a knob for operations, disposed in a display region of a touch display; a conductor column provided in the knob, and each including a first conductor column that can be detected as a touch point irrespective of whether or not the knob is in a state of being touched with user’s finger, and a second conductor column that can be detected as a touch point only in the state in which the knob is being touched with user’s finger; a touch point detecting unit (21) for detecting a plurality of touch points including the touch point corresponding to the conductor column, and outputting touch information related to the plurality of detected touch points; a knob touch point determining unit (22a) for determining, by using the touch information, the touch point corresponding to the conductor column among the plurality of touch points detected by the touch point detecting unit (21); and a finger-touch-on-the-knob determining unit (24b) for determining, on a basis of the number of touch points included in a determination result by the knob touch point determining unit (22a), whether or not the knob is in a state of being touched with user’s finger. [Figure 19]

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