System and method for touch and interaction in a three-dimension display

A system for touch and interaction in a three-dimension display, comprising:

• a display panel, at least two ultrasonic transmitters and at least two ultrasonic sensors arranged on sides of the display panel, a location detecting device, and a master control device, wherein:
• the location detecting device is coupled respectively to the ultrasonic transmitters and the ultrasonic sensors, and is configured to determine a relative location relationship between a touch position of an operator and the display panel, according to transmitting time of ultrasonic signals transmitted by the at least two ultrasonic transmitters and receiving time of ultrasonic signals received by the at least two ultrasonic sensors;
• and
• the master control device is coupled respectively to the display panel, the ultrasonic transmitters and the location detecting device, and is configured to control the ultrasonic transmitters to transmit ultrasonic signals at preset power to the touch position of the operator according to a three-dimension object currently displayed on the display panel and the relative location relationship between the touch position of the operator and the display panel to make feedback for a touch operation at the touch position of the operator, wherein the preset power matches a material of the three-dimension object and a touch relationship between the three-dimension object and the touch position of the operator;
• wherein the system further comprises a depth-of-focus correcting device coupled respectively to the location detecting device and the master control device, wherein:
• the master control device is further configured to control the display panel to display at least two depth-of-focus test images before the three-dimension touch and interaction mode is enabled;
• and
• the depth-of-focus correcting device is configured to correct errors between depths of focus perceived by the operator and preset depths of focus of the depth-of-focus test images according to the depth-of-focus test images and the relative location relationship between the touch position of the operator and the display panel.