Control system and method for capacitive touch screen
A capacitive touch and control system technology, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve problems such as lack of flexibility, and achieve the effect of improving return rate and power consumption
Active Publication Date: 2015-10-21
ORISE TECH CO LTD
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However, the disadvantage of this method is that the touch expression used is fixed, or the data flow in the calculation is fixed, and it lacks flexibility.
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[0042] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0043] The present invention designs a plurality of independent touch operation circuits for the touch detection of the capacitive touch screen, so as to respectively perform different touch operation functions in the touch algorithm. The controller sequentially assigns touch computing functions to different touch computing circuits to control the touch computing circuits to access, compute and update the touch data in the memory, and finally complete the detection of touch coordinates. The present invention provides the above-mentioned touch computing circuit for the controller to call for use, and then changes the data flow flexibly, and solves the problem of fixed data flow.
[0044] figure 1 It is a block diagram of a control system of a capacit...
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The invention discloses a control system and a control method for a capacitive touch screen. The control system comprises a touch detection circuit, a touch computing circuit, a storage module and a controller. The touch detection circuit is used for detecting the capacitance change of the capacitive touch screen so as to generate touch data; the touch arithmetic circuit is used for performing corresponding touch computing functions sequentially on touch data; the storage module is connected with the touch detection circuit and the touch computing circuit so as to record the touch data generated by the touch detection circuit as well as the touch data after the touch computing circuit performs each touch computation; the controller is connected with the touch detection circuit, the touch computing circuit and the storage module, and is used for allocating the touch computing functions in the touch algorithm to the touch computing circuit so as to perform the corresponding computing function in the touch algorithm. According to the control system and the method, a microcontroller is used to allocate the touch computing functions to the touch computing circuit so as to perform various touch computing functions and solve the problem of fixing data flow.
Description
technical field [0001] The present invention relates to a touch control system and method, in particular to a control system and method for a capacitive touch screen. Background technique [0002] The sensing principle of the capacitive touch screen is to apply voltage to the touch sensing area to form a fixed electric field. When the human body touches the screen, the capacitance will change after the transparent electrodes in the touch sensing area interact with the weak current of the human body. causing an induced current. The touch position can be calculated by measuring the induced current through a touch screen controller (TSC). [0003] Currently, there are several implementation methods for the touch screen controller to complete the coordinate reporting work. One of the methods is to use a touch analog front-end circuit to detect the capacitance change of the capacitive touch screen, and use a microcontroller (Microcontroller, MCU) to calculate the coordinates of...
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IPC IPC(8): G06F3/044
Inventor 黄建颖黄鑫茂
Owner ORISE TECH CO LTD