Touch detection method and apparatus, and touch screen system

A touch detection apparatus applied to a touch screen combining mutual-capacitance detection and self-capacitance detection, comprising:

• a detection process starting unit, a touch signal detecting unit, a touch signal type determining unit, a shielding unit and a touch information acquiring unit, wherein
• the detection process starting unit is adapted to start a first detection process, wherein the first detection process is a Y-direction electrode array detection, an X-direction electrode array detection or an XY-direction electrode array detection;
• the touch signal detecting unit is adapted to determine, according to a detection result of the first detection process, whether a touch signal is generated on a screen body of the touch screen, to obtain a first determination result;
• the detection process starting unit is further adapted to start a second detection process in the case that the first determination result obtained from the touch signal detecting unit indicates that a touch signal is generated on the screen body of the touch screen and the first detection process is the X-direction electrode array detection or the Y-direction electrode array detection, wherein the second detection process is any one of the three detection processes:
• the Y-direction electrode array detection, the X-direction electrode array detection and the XY-direction electrode array detection, which is different from the first detection process;
• the touch signal type determining unit is adapted to determine, in the case that the first determination result indicating that a touch signal is generated on the screen body of the touch screen is obtained, the touch type of the touch signal according to the detection result of the first detection process or the second detection process, to obtain a second determination result, wherein the touch type comprises single-touch and multi-touch;
• the shielding unit is adapted to refrain from starting a detection process that has not been executed in the case that the first determination result indicating that no touch signal is generated on the screen body of the touch screen is obtained, and to refrain from starting a self-capacitance detection process that has not been executed in the case that the second determination result indicating that the touch signal is a multi-touch signal is obtained, wherein the detection process that has not been executed is a detection process among the three detection processes comprising the Y-direction electrode array detection, the X-direction electrode array detection and the XY-direction electrode array detection, which is different from the first detection process;
• and
• the touch information acquiring unit is adapted to obtain touch information corresponding to the touch signal according to the detection results of the detection processes that have been executed.

A touch screen system, comprising a screen body, a touch screen detection sub-system, a main processor and a touch detection apparatus, wherein

• the touch detection apparatus comprises:
• a detection process starting unit, a touch signal detecting unit, a touch signal type determining unit, a shielding unit and a touch information acquiring unit, wherein
• the detection process starting unit is adapted to start a first detection process, wherein the first detection process is a Y-direction electrode array detection, an X-direction electrode array detection or an XY-direction electrode array detection;
• the touch signal detecting unit is adapted to determine, according to a detection result of the first detection process, whether a touch signal is generated on a screen body of the touch screen, to obtain a first determination result;
• the detection process starting unit is further adapted to start a second detection process in the case that the first determination result obtained from the touch signal detecting unit indicates that a touch signal is generated on the screen body of the touch screen and the first detection process is the X-direction electrode array detection or the Y-direction electrode array detection, wherein the second detection process is any one of the three detection processes:
• the Y-direction electrode array detection, the X-direction electrode array detection and the XY-direction electrode array detection, which is different from the first detection process;
• the touch signal type determining unit is adapted to determine, in the case that the first determination result indicating that a touch signal is generated on the screen body of the touch screen is obtained, the touch type of the touch signal according to the detection result of the first detection process or the second detection process, to obtain a second determination result, wherein the touch type comprises single-touch and multi-touch;
• the shielding unit is adapted to refrain from starting a detection process that has not been executed in the case that the first determination result indicating that no touch signal is generated on the screen body of the touch screen is obtained, and to refrain from starting a self-capacitance detection process that has not been executed in the case that the second determination result indicating that the touch signal is a multi-touch signal is obtained, wherein the detection process that has not been executed is a detection process among the three detection processes comprising the Y-direction electrode array detection, the X-direction electrode array detection and the XY-direction electrode array detection, which is different from the first detection process;
• and
• the touch information acquiring unit is adapted to obtain touch information corresponding to the touch signal according to the detection results of the detection processes that have been executed;
• the touch screen detection sub-system is adapted to perform touch detection on the screen body of the touch screen according to a detection strategy of the touch detection apparatus, and supply the obtained detection result to the touch detection apparatus;
• and
• the touch detection apparatus is adapted to obtain touch information corresponding to the touch signal generated on the screen body according to the detection result and supply the touch information to the main processor.