Pointer control method and device

A pointer control method of a computer system, the computer system having a keyboard and a pointer unit, the keyboard comprising a plurality of control keys and a plurality of non-control keys, the non-control keys are arranged in a matrix, and each of the non-control keys having an X coordinate and a Y coordinate individually, the method comprising:

• detecting a first key event, wherein the first key event refers to that at least two non-control keys are pressed substantially simultaneously;
• calculating a first coordinate, wherein an X coordinate of the first coordinate is an average value of X coordinates of the at least two non-control keys pressed in the first key event, and a Y coordinate of the first coordinate is an average value of Y coordinates of the non-control keys pressed in the first key event;
• detecting a second key even after the first key event, and the second key event refers to that at least two non-control keys are pressed;
• calculating a second coordinate, wherein an X coordinate of the second coordinate is an average value of X coordinates of the at least two non-control keys pressed in the second key event, and a Y coordinate of the second coordinate is an average value of Y coordinates of the non-control keys pressed in the second key event;
• calculating a vector defined by the first coordinate and the second coordinate;
• and
• control movement of the pointer according to the vector.

A pointer control device of a computer system, the pointer control device comprising:

• a keyboard, electrically connected to the computer system and comprising a plurality of control keys and a plurality of non-control keys, wherein the non-control keys are arranged in a matrix and each of the non-control keys has an X coordinate and a Y coordinate individually;
• a detection module for detecting a first key event and a second key event in sequence, wherein the first key event refers to that at least two non-control keys are pressed simultaneously, and the second key event refers to that one non-control key is pressed;
• a calculation module, used to calculate a first coordinate, a second coordinate, and a vector defined by the first coordinate and the second coordinate, wherein an X coordinate of the first coordinate is an average value of X coordinates of the non-control keys pressed in the first key event, and a Y coordinate of the first coordinate is an average value of Y coordinates of the non-control keys pressed in the first key event;
• an X coordinate of the second coordinate is an X coordinate of the non-control key pressed in the second key event, and a Y coordinate of the second coordinate is a Y coordinate of the non-control key pressed in the second key event;
• and
• a control module, used to control movement of the pointer according to the vector.