Integrated circuit, sensor and electronic device for controlling display screen

A sensor comprising:

• a position detection sensor configured to be layered with a display including a display region, the position detection sensor including a detection region which is larger than the display region;
• a memory device;
• and
• a processor, which is coupled to the position detection sensor and which, in operation, performs:
• periodically detecting a pointer touch on the position detection sensor at a defined time cycle;
• determining positions of the pointer touch on the position detection sensor and storing the positions in the memory device;
• not outputting position P1 of a first pointer touch until position P2 of a second pointer touch, which is detected later in time than the first pointer touch, is determined;
• in response to position P2 of the second pointer touch being outside the display region, continuing to not output position P1 of the first pointer touch;
• and
• in response to position P2 of the second pointer touch being inside the display region, outputting an edge position at which a line connecting position P1 and position P2 intersects an edge of the display region, without outputting position P2, such that a new line starts to be drawn from the edge position.

An electronic device comprising:

• a display including a display region;
• a position detection sensor layered with the display and including a detection region which is larger than the display region;
• a memory device;
• and
• a processor, which is coupled to the position detection sensor and which, in operation, performs:
• periodically detecting a pointer touch on the position detection sensor at a defined time cycle;
• determining positions of the pointer touch on the position detection sensor and storing the positions in the memory device;
• not outputting position P1 of a first pointer touch until position P2 of a second pointer touch, which is detected later in time than the first pointer touch, is determined;
• in response to position P2 of the second pointer touch being outside the display region, continuing to not output position P1 of the first pointer touch;
• in response to position P2 of the second pointer touch being inside the display region, outputting an edge position at which a line connecting position P1 and position P2 intersects an edge of the display region, without outputting position P2;
• and
• in the display region of the display, draws a new line that starts from the edge position towards position P2.