CURSOR CONTROL METHOD FOR A TOUCH SCREEN

摘要

When a cursor control mode of an electronic device is enabled, an arrow cursor is converted into a transparent ball on a touch screen and touch input at any area of the touch screen is simulated as a contact point of a tangent plane to a virtual sphere utilized to be forced to roll on a virtual surface with specific rolling direction and speed, as the touch input moves along a specific direction with a specific speed on the touch screen. The data of the rolling direction and speed of the virtual sphere will be converted to corresponding movements of the transparent ball on the touch screen. No direct contact to the transparent ball is needed to move the transparent ball and any target icon will not be blocked by fingers. Enlargement of the content covered by the transparent ball also facilitates easy reading and recognition.

主权项

1. A cursor control method for a touch screen, comprising steps:
enabling a cursor control mode on the touch screen to convert a first graphical object to a second graphical object and providing the second graphical object on the touch screen; and performing a touch input on the touch screen and the second graphical object correspondingly moving on the touch screen according to the touch input received by the touch screen.