As for painting creation, just like the painter's sketchpad and brush, the vivid pictures and characters commonly seen in animated films are created by the graphic tablet. The drawing function of Graphics tablet is incomparable with keyboard and handwriting board. Graphics tablet is mainly for teachers and students majoring in design and fine arts, advertising companies and design studios, as well as Flash vector animators.
principle of operation
The hardware of the drawing board adopts the principle of electromagnetic induction, and the positioning and movement of the cursor are completely completed by electromagnetic induction.
In the board of graphics tablet, there is a circuit board, commonly known as antenna board, and copper wires are evenly arranged vertically and horizontally. The graphic board is cut into a certain number of squares, and a balanced cross magnetic field is generated above the board. When the pen tip moves on the tablet, the magnetic field is cut off and an electrical signal is generated. Through multi-point positioning, the tablet chip can accurately determine the position of the pen tip of the tablet.
Therefore, during the cursor movement of the tablet, the pen can move without touching the tablet, and the sensing height is generally15 mm.
The principle of active wireless tablet is different from that of passive wireless. The pen with battery can release a certain magnetic field, while the pen without battery reflects the magnetic field generated by the graphic tablet. The pressure sense is generated by the pressure resistor in the pen, and the pressure sense is fed back to the graphic input board through the magnetic field signal.