Information input device and method with function of eliminating mutual interference among sensing signals
An information input device and mutual interference technology are applied in the information input device with electromagnetic touch input and capacitive touch input functions, and in the field of information input devices that eliminate mutual interference between electromagnetic signals and capacitive signals, and can solve the problem of electromagnetic signals and capacitive signals. Mutual interference, affecting the accuracy of electromagnetic handwriting input coordinate positioning, etc., to achieve the effect of improving accurate positioning, realizing touch operation, and solving mutual interference
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[0027] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings. The information input device provided by the present invention is a digital tablet, a touch screen and other devices.
[0028] Such as figure 1 Shown is a structural block diagram of the device of the present invention. The information input device provided by the present invention includes an electromagnetic induction board 3 for generating an electromagnetic induction signal and locating the touch position of the electromagnetic pen, for sensing the finger touch signal and locating the touch position of the finger 1. A capacitive touch panel 2 for sensing finger touch events, the capacitive touch panel 2 is arranged close to the top of the electromagnetic induction panel 3, the upper shell 1 is arranged above the capacitive touch panel 2, and the bottom is arranged below the electromagnetic induction panel 3 shell4. Therefore, the bottom case 4 , th...
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