Input detection method, input detection device, input detection program and media storing the same

#1. Field of the Invention

#The present invention relates to an input detection method, an input detection device, an input detection program, and a media storing the same, and in particular relates to an input detection method, an input detection device, an input detection program, and a media storing the same capable of separating and detecting multiple touch points input to a touch sensor which has electrodes arranged in a matrix therein and scans the electrodes line by line to detect touch inputs.

#2. Description of the Related Art

#The present invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:

#FIG. 1 is a block diagram showing the entire structure of an input detection device according to an embodiment of the invention.

#FIG. 2 is diagram showing an example of the inner structure of the touch sensor.

#The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

#FIG. 1 is a block diagram showing the entire structure of an input detection device according to an embodiment of the invention. In FIG. 1, the input detection device comprises X electrodes 10, Y electrodes 20, a touch sensor 30, a touch sensor driving circuit 80, a calculation device 90 and a memory device 100. The touch sensor driving circuit 80 comprises an X electrode scanning part 81 and a Y electrode scanning part 82. The calculation device 90 comprises a labeling part 91, a separation area detection part 92, a positive switch-off part 93, and a location calculation part 94. The touch sensor driving circuit 80, the calculation device 9, and the memory device 100 form a touch sensor controller 110.

#The touch sensor 30 has an input surface covered with transparent materials such as glass. The touch sensor 30 is an input detection device which detects touch inputs when the input surface is contacted with a finger or other objects having conductivity. The touch sensor 30 is provided with X electrodes 10 and Y electrodes 20, which are perpendicularly arranged to form a matrix, therein. Various kinds of touch sensors can be adopted as the touch sensor 30 as long as multiple touch points can be detected. For example, a projected capacitive touch sensor can be utilized. The projected capacitive touch sensor uses one of an X electrode 10 or Y electrode 20 as a driving electrode and the other as a signal receiving electrode. A driving pulse is supplied from the driving electrode, and the touch sensor 30 detects touch inputs on the input surface by measuring capacitance from a current flowing at the time when a conductor such as a finger touches the input surface.