Virtual touch interaction for any display devices using radar

An electronic device comprising:

• a transceiver configured to transmit and receive radar signals in a first field of view (FoV);
• and
• a processor operably connected to the transceiver and configured to:
• obtain radar data based on the radar signals;
• for each respective object among a set of objects detected:
• determine a set of parameters associated with the respective object, based on the radar signals, wherein the set of parameters includes a normal angle of the respective object;
• and
• select the respective object as a target that is within a region-of-interest (ROI), in response to a determination that the set of parameters satisfy a definition of the ROI, wherein the definition of the ROI is satisfied based on a determination that the normal angle of the respective object is within a normal-angle threshold interval that includes a normal angle of the transceiver;
• and
• track a state of the target with respect to the ROI to detect one or more virtual interactions with a display area that is associated with an external display device and that overlaps the first FoV.

An electronic display device comprising:

• a display configured to output a graphical user interface (GUI) on a display area;
• a transceiver configured to transmit and receive radar signals in a field of view (FoV) that overlaps the display area;
• and
• a processor operably connected to the display and the transceiver and configured to:
• obtain radar data based on the radar signals;
• for each respective object among a set of objects detected:
• determine a set of parameters associated with the respective object, based on the radar signals, wherein the set of parameters includes a normal angle of the respective object;
• and
• select the respective object as a target that is within a region-of-interest (ROI), in response to a determination that the set of parameters satisfy a definition of the ROI, wherein the definition of the ROI is satisfied based on a determination that the normal angle of the respective object is within a normal-angle threshold interval that includes a normal angle of the transceiver;
• and
• track a state of the target with respect to the ROI to detect one or more virtual interactions with the display area.