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Resistive touch screen control circuit and multi-touch realization method thereof

A technology of control circuit and implementation method, applied in the direction of electrical digital data processing, instrumentation, input/output process of data processing, etc., can solve problems such as occupying more resources, large amount of calculation, increasing difficulty of control and detection, etc., and achieve cost reduction , short design cycle, speed up the effect of the cycle to market

Active Publication Date: 2016-01-13
CRM ICBG (WUXI) CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0009] In summary, it can be seen that when the four-wire resistive touch screen in the prior art realizes multi-touch, MCU software is required for gesture recognition or a special processing unit for calculation, which results in a large amount of calculation and requires more resources to increase the difficulty of control and detection. problem, therefore, it is necessary to propose improved technical means to solve this problem

Method used

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  • Resistive touch screen control circuit and multi-touch realization method thereof
  • Resistive touch screen control circuit and multi-touch realization method thereof
  • Resistive touch screen control circuit and multi-touch realization method thereof

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Embodiment Construction

[0047] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0048] Before describing the preferred embodiment of the present invention, the working principle of the multi-touch of the present invention is explained through two-point touch detection: image 3 It is the equivalent circuit diagram of a single-point touch and a two-point touch of a four-wire resistive touch screen. It can be known from the background technology that when there is only on...

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Abstract

The invention provides a resistance-type touch screen control circuit and a multi-point touch implement method thereof. The resistance-type touch screen control circuit at least comprises a touch screen driving switch module, a touch monitoring module, an analog input signal selecting module, an analog-to-digital converting unit, a digital control logic module, an interior standard module and an oscillator module. Through the touch monitoring module, a touch interrupt signal is generated and whether current touch is single-point touch or multi-point touch is determined, so that the multi-point touch function can be achieved in the current four-wire type resistance touch screen without changing faceplate modules and software and hardware design of the system.

Description

technical field [0001] The invention relates to a touch screen control circuit and its implementation method, in particular to a resistive touch screen control circuit and its multi-touch implementation method. Background technique [0002] As the latest input device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction. With the increasing use of computers as information sources, touch screens are easy to use, durable, fast in response, space-saving and other advantages, making system designers more and more feel that using touch screens does have considerable advantages. It endows multimedia with a new look and is a very attractive new multimedia interactive device. According to the working principle of the touch screen and the medium for transmitting information, the touch screen can be divided into the following five types: resistive, capacitive, electromagnetic, infrared, and surface acoustic wave. Among them, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/045
Inventor 陈富涛胡燕杨思彦尤剑源
Owner CRM ICBG (WUXI) CO LTD
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