12. A handwriting input method comprising steps of: detecting an input action of an user who is performing the suspending handwriting input with a handwriting input apparatus, the suspending handwriting input being configured to perform line inputting and erasing of the existing lines, the line inputting including inputting of characters and graphics; converting the input action to input information; and transmitting the input information via communication to a display device for receiving and displaying the input information; wherein the input action is considered as an inactive motion in a case where an action switching circuit in the handwriting input apparatus has a higher priority and is switched to an inactive motion.
12. A handwriting input method comprising steps of: detecting an input action of an user who is performing the suspending handwriting input with a handwriting input apparatus, the suspending handwriting input being configured to perform line inputting and erasing of the existing lines, the line inputting including inputting of characters and graphics; converting the input action to input information; and transmitting the input information via communication to a display device for receiving and displaying the input information; wherein the input action is considered as an inactive motion in a case where an action switching circuit in the handwriting input apparatus has a higher priority and is switched to an inactive motion. 18. The method according to claim 12 , further comprising one of or any combination of: switching a motion state and/or an operation type of the handwriting input apparatus; switching an input state of the handwriting input apparatus when the handwriting input apparatus is in an active motion state; resetting the cursor on the display screen of the display device; and feeding a force back to the user when feedback information from the display device is received.