Dial device and related interactive display device capable of determining a rotation angle

An interactive display device configured to couple to a dial device;

• wherein the dial device comprises a bottom base, an upper case and a plurality of sensing elements, the bottom base comprises an electrode pattern with a directivity, the plurality of sensing elements is configured to sense a relative movement between the upper case and the bottom base to correspondingly generate a plurality of moving signals, and the plurality of sensing elements is configured to sense a relative rotation between the upper case and the bottom base to correspondingly generate a plurality of rotating signals;
• the interactive display device comprises:
• a display;
• a touch control circuit configured to sense the electrode pattern to generate a plurality of first sensing signals;
• a second communication circuit configured to receive the plurality of moving signals;
• and
• a control circuit coupled to the touch control circuit, the second communication circuit and the display, and configured to make an image object displayed by the display show a visual effect according to the plurality of first sensing signals and the plurality of moving signals;
• wherein when the upper case moves relative to the bottom base toward a first direction moving of the interactive display device, the plurality of sensing elements correspondingly generates a plurality of first moving signals, the plurality of first moving signals is transmitted to the interactive display device by the first communication circuit, thereby an image object displayed by the interactive display device moves toward the first direction;
• when the upper case moves relative to the bottom base toward a second direction of the display, the plurality of sensing elements correspondingly generates a plurality of second moving signals, the plurality of second moving signals is transmit to the interactive display device by the first communication circuit, thereby the image object displayed by the interactive display device moves toward the second direction moving;
• and the first direction is perpendicular to the second direction;
• wherein the interactive display device obtains a relative rotation angle between the dial device and the interactive display device according to a mutual induction between the dial device and the interactive display device, thereby the image object displayed by the interactive display device comprises an interactive display scene according to the relative rotation angle;
• wherein the electrode pattern is not symmetry about any straight line.