Touchscreen with Z-velocity enhancement

A non-transitory computer readable storage medium storing instructions, the instructions when executed by at least one processor cause the at least one processor to:

• detect a movement of an object relative to a region of a touch-sensitive screen, the region comprising a plurality of cells, by, for one or more of the plurality of cells (i) determining a first signal value corresponding to a first position of an object relative to the cell at a first time and (ii) determine a second signal value corresponding to a second position of the object relative to the cell at a second time;
• calculate a velocity of the movement based on the first signal value at the first time and the second signal value at the second time, the velocity having a magnitude and a direction;
• classify the movement using the magnitude and the direction associated with the velocity, wherein classifying the movement using the magnitude and the direction associated with the velocity comprises:
• determine that the direction is a positive direction or a negative direction;
• in response to determining that the direction is the positive direction, classify the movement of the object approaching the region of the touch-sensitive screen;
• and
• in response to determining that the direction is the negative value, classify the movement of the object moving away from the region of the touch-sensitive screen.

A mobile computing device comprising:

• a touch-sensitive screen configured to display information and to detect a movement of an object relative to the touch-sensitive screen, the touch-sensitive screen comprising a region comprising a plurality of cells;
• a processor coupled to the touch-sensitive screen;
• a memory including instructions to be executed by the processor, the instructions when executed by the processor cause the processor to perform a computer-implemented method comprising:
• detecting a movement of the object relative to the region of the touch-sensitive screen by, for one or more of the plurality of cells, (i) determining a first signal value corresponding to a first position of the object relative to the cell at a first time, and (ii) determining a second signal value corresponding to a second position of the object relative to the region of the touch-sensitive screen at a second time;
• calculating a velocity of the movement based on the first signal value at the first time and the second signal value at the second time, the velocity having with a magnitude and a direction, classifying the movement using the magnitude and the direction associated with the velocity, wherein classifying the movement using the magnitude and the direction associated with the velocity comprises:
• determining that the direction is a positive direction or a negative direction;
• in response to determining that the direction is the positive direction, classifying the movement of the object approaching the region of the touch-sensitive screen;
• and
• in response to determining that the direction is the negative value, classifying the movement of the object moving away from the region of the touch-sensitive screen.