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    • 3. 发明申请
    • LIGHT-BASED TOUCH SCREEN
    • 基于光的触摸屏
    • WO2010093570A1
    • 2010-08-19
    • PCT/US2010/023429
    • 2010-02-08
    • NEONODE INC.GOERTZ, MagnusERIKSSON, ThomasSHAIN, Joseph
    • GOERTZ, MagnusERIKSSON, ThomasSHAIN, Joseph
    • G06F3/042
    • G06F3/0425G06F3/0421G06F3/0428G06F2203/04108
    • A light-based touch screen, including a plurality of infra-red light emitting diodes (LEDs), for generating light beams, at least one LED selector, connected with the plurality of LEDs, for controllably selecting and deselecting one or more of the plurality of LEDs, a plurality of photodiode (PD) receivers, for measuring light intensity, at least one PD selector, connected with the plurality of PD receivers, for controllably selecting and deselecting one or more of the plurality of PD receivers, an optical assembly, for projecting light beams emitted by the plurality of LEDs, and a controller, coupled with the plurality of PD receivers, (i) for controlling the at least one LED selector, (ii) for controlling the at least one PD selector, and (iii) for determining therefrom position and velocity of an object, based on output currents of the plurality of PD receivers.
    • 一种基于光的触摸屏,包括用于产生光束的多个红外发光二极管(LED),与所述多个LED连接的至少一个LED选择器,用于可控地选择和取消选择所述多个LED中的一个或多个 用于测量光强度的多个光电二极管(PD)接收器,与多个PD接收器连接的至少一个PD选择器,用于可控地选择和取消选择多个PD接收器中的一个或多个,光学组件, 用于投射由所述多个LED发射的光束;以及控制器,与所述多个PD接收器耦合,(i)用于控制所述至少一个LED选择器,(ii)用于控制所述至少一个PD选择器,以及(iii ),用于基于所述多个PD接收机的输出电流来确定对象的位置和速度。