Abstract: A display and operating device has a touch-sensitive display field by way of which the parameters of a parameter vector can be changed. In order to set the parameters, a structure of circular or annular elements is displayed, on the circumference of which a corresponding contact element is positioned. Using the position of a contact element on the circumference of the ring element, the value of the parameter is coded. The contact element is moved by user interaction to different radial positions about the center of the respective ring element to change the parameter value along the display field in the radial direction, and rotated in the circumferential direction of the ring element. The resolution of the parameter adjustment can be established in a simple and intuitive manner by selecting the radial position of the contact element during its rotation.

Abstract: A display and operating device has a touch-sensitive display field by way of which the parameters of a parameter vector can be changed. In order to set the parameters, a structure of circular or annular elements is displayed, on the circumference of which a corresponding contact element is positioned. Using the position of a contact element on the circumference of the ring element, the value of the parameter is coded. The contact element is moved by user interaction to different radial positions about the center of the respective ring element to change the parameter value along the display field in the radial direction, and rotated in the circumferential direction of the ring element. The resolution of the parameter adjustment can be established in a simple and intuitive manner by selecting the radial position of the contact element during its rotation.