Multi-touch system and method for processing multi-touch signal

A multi-touch system, comprising:

• a control device;
• and
• a plurality of touch sensing sub-systems arranged in an array with at least two touch sensing rows and coupled to the control device respectively, wherein each of the touch sensing rows includes a pair of longitudinal sides opposite to each other and a pair of end sides opposite to each other and a light reflective frame is configured on one of the longitudinal sides and both of the end sides and each of the touch sensing sub-systems in each of the touch sensing rows comprises:
• at least two sensors arranged at two corners of the corresponding touch sensing sub-system at one longitudinal side opposite to the other longitudinal side having the light reflective frame arranged thereon, wherein a sensing range of both of the sensor covers at least the corresponding touch sensing sub-system.

A method for processing a multi-touch signal, for a multi-touch system, wherein the multi-touch system includes a plurality of touch sensing sub-systems arranged in a touch sensing row, the touch sensing row includes a pair of longitudinal sides opposite to each other and a pair of end sides opposite to each other, a light reflective frame is configured on one of the longitudinal sides and both of the end sides and each of the touch sensing sub-systems includes at least two sensors arranged at two corners of the corresponding touch sensing sub-system at one longitudinal side opposite to the other longitudinal side having the light reflective frame arranged thereon, the method comprising:

• initiating the sensors of each of the touch sensing sub-systems in the touch sensing row in sequence so as to receive a sensing signal from each of the touch sensing sub-systems;
• according to each of the sensing signals, determining whether a touch point number sensed by each of the sensors of the touch sensing sub-systems corresponding to the sensing signal is 1;
• and
• as for each of the touch sensing sub-systems, when the touch point number sensed by each of the sensors of the corresponding touch sensing sub-system is 1, determining there is a touch point in the corresponding touch sensing sub-system and calculating a coordinate of the touch point in the corresponding touch sensing sub-system according to the corresponding sensing signal.