Beijing Irtouch Systems Co., Ltd

Haibing Zhang

Jianjun Liu

Xinlin Ye

Xinbin Liu

Zhenyu Wu

Yuhui Wang

Haibo Tang

Wujun Wang

Haidong Hao

Disclosed are an infrared touch screen multipoint recognizing method and an infrared touch screen. The method comprises the following steps: driving infrared transmitting tubes and infrared receiving tubes to scan a touch detection area and saving scan data (); reading scan data of the infrared transmitting tubes and the infrared receiving tubes, to determine boundaries of quasi-touch points and obtain a quasi-touch point set (); reading scan data of the infrared transmitting tubes and the infrared receiving tubes aligned with a first direction off-axis, to obtain a first calibrated touch point set (); reading scan data of the infrared transmitting tubes and the infrared receiving tubes aligned with a second direction off-axis, to obtain a second calibrated touch point set (); and comparing the quasi-touch point set, the first calibrated touch point set and the second calibrated touch point set, to eliminate ghost points and determine real touch points (). The infrared touch screen multi-point recognizing method and the infrared touch screen can recognize multiple touch points through one time of full-screen scanning by using only one set of detecting elements.

Infrared touch screen multi-point recognizing method and infrared touch screen

A touch screen, a touch system and a method for positioning a touch object in a touch system are disclosed. The touch screen comprises an infrared pair tube array, wherein said infrared pair tube array is disposed on an edge of said touch screen. By introducing the infrared pair tube array, the touch screen of the present invention eliminates invalid touch areas in the existing touch screen and avoids false touch points in multipoint positioning.

Touch screen, touch system and method for positioning a touch object in touch system

Growing community of inventors

Beijing, China

Haibing Zhang