Handwriting elimination apparatus and method for touch screen, electronic stylus pen, and pen cap thereof

An electronic stylus pen, comprising:

• a pen barrel and a pen head disposed at one end of the pen barrel, and
• a pen cap removably connected to the other end of the pen barrel and is configured to perform an erasure function;
• wherein the pen cap comprises a handwriting elimination apparatus for a touch screen;
• wherein the handwriting elimination apparatus comprises:
• a trigger component comprising a trigger portion in contact with the touch screen, and a press portion disposed on an inner side of the trigger portion;
• and
• a strain component comprising a strain sensing assembly opposite to the press portion, wherein
• the trigger portion is in contact with the touch screen and receives a force, and presses the strain sensing assembly through the press portion, the strain sensing assembly undergoes deformation under a press force applied by the press portion and generates an erasure signal corresponding to the deformation, and the erasure signal is for eliminating handwriting displayed on the touch screen.

A touch screen handwriting elimination method, comprising:

• receiving a feedback signal from an electronic device, in which a touch screen is used, that triggers an erasure function of a pen cap;
• performing detection and sending electrical signal information indicating that a trigger portion receives a force;
• and
• determining target pressure information of the pen cap based on the electrical signal information, and sending the target pressure information to the electronic device, for the electronic device to determine, based on the target pressure information, an erasure degree for handwriting displayed on the touch screen, wherein the target pressure information comprises pressure magnitude information of the pen cap, wherein the erasure function is performed by using the pen cap of an electronic stylus pen comprised a pen barrel and a pen head disposed at one end of the pen barrel, and the pen cap removably connected to the other end of the pen barrel and is configured to perform an erasure function;
• wherein the pen cap comprises a handwriting elimination apparatus for a touch screen;
• wherein the handwriting elimination apparatus comprises:
• a trigger component, wherein the trigger component comprises the trigger portion in contact with the touch screen, and a press portion disposed on an inner side of the trigger portion;
• and
• a strain component, wherein the strain component comprises a strain sensing assembly opposite to the press portion, wherein
• the trigger portion is in contact with the touch screen and receives a force, and presses the strain sensing assembly through the press portion, the strain sensing assembly undergoes deformation under a press force applied by the press portion and generates an erasure signal corresponding to the deformation, and the erasure signal is for eliminating handwriting displayed on the touch screen.