| 摘要 |
Through the present invention, a word uttered by an operator unconsciously or during a conversation with another person is not recognized as a control command. The usage state of an ultrasonic probe (4) is assessed, and an operator is recognized and the distance (L) between the operator and a monitor (3) is calculated on the basis of image data obtained by imaging of a scanning space by a camera (61). When the ultrasonic probe (4) is in use and the distance (L) is equal to or greater than a pre-set distance, a determination is made as to whether a gesture/voice input reception condition is satisfied, a gesture/voice input reception mode is set, and results of recognizing a gesture or voice inputted in this state are received as input operation information. |
