Touch event processing method and portable device implementing the same

A touch event processing method of a portable device having first and second operating systems, the method comprising:

• receiving, at the second operating system, touch coordinates from a touch panel;
• determining whether the touch coordinates are the coordinates in a security image displayed on a screen;
• and
• transmitting, when the touch coordinates are not the coordinates in the security image, a touch event processing right handover message for handover of a right of processing a touch event on the touch panel to the first operating system.

A touch event processing method of a portable device having multiple operating systems, the method comprising:

• receiving an interrupt from a touch panel;
• determining an operating system having a right of processing a touch event among the multiple operating systems;
• generating the interrupt to the operating system having the right of processing the touch event;
• and
• transmitting the touch coordinates to the operating system to which the interrupt was transmitted, in response to a touch coordinates request message received from that operating system.

A portable device comprising:

• a touchscreen having a display panel and a touch panel;
• a memory for storing a security application and first and second operating systems;
• and
• a Central Processing Unit (CPU) which accesses the memory to execute the first and second operating systems,
• wherein the first operating system receives touch coordinates from a touch panel, and transmits, in response to a determination that a function corresponding to the touch coordinates is to execute a security application, a touch event processing right handover message for handover of a right of processing a touch event on the touch panel to the second operating system.