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Projecting type capacitor touch screen output method and the projecting type capacitor touch screen thereof

A capacitive touch screen and output method technology, applied in the input/output process of data processing, electrical digital data processing, instruments, etc., can solve the problems of different CPUs and operating systems that require a lot of manpower and time, inconvenient operation, and wear and tear Problems such as high rate, to achieve the effect of reducing time and technical threshold

Inactive Publication Date: 2009-11-25
SUPER PIONEER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, projected capacitive touch screens at home and abroad all use digital serial interfaces, such as 12C (inter integrated) or SPI (serial peripheral interface) communication protocols, which need to be adjusted on different operating platforms, and for different CPU and operating system usually need to spend a lot of manpower and time to complete the adjustment, which is a great obstacle to the popularization of projected capacitive touch screen
The resistive touch screen, which is very popular nowadays, has the disadvantages of low light transmittance, high wear rate, poor surface flatness, and inconvenient operation.

Method used

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  • Projecting type capacitor touch screen output method and the projecting type capacitor touch screen thereof

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Embodiment Construction

[0014] The following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.

[0015] The output method of the projected capacitive touch screen of the present invention comprises the following steps:

[0016] (1) Use the general input / output channel (GIPO Channel) of the microcontroller as the input pin of the projected capacitive touch screen, which includes the X-axis and Y-axis signal sources;

[0017] (2) Use the two-dimensional array (Pattern) of the capacitive touch screen to calculate the center of gravity, and then use the input signal to cooperate with linear interpolation to calculate the coordinate value (X, Y) of the signal corresponding to the touch screen display area;

[0018] (3) Cooperate with the rated voltage input source, use the digital-to-analog converter (ADC) to convert the coordinate value into the signal format (X+, X-, Y+, Y-) output by the resistive touch screen...

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Abstract

The invention discloses a projecting type capacitor touch screen output method and the projecting type capacitor touch screen thereof. The output method comprises the following steps: (1) using the general input / output channel of single-chip microcomputer as the input pin of the projecting type capacitor touch screen; (2) calculating the coordinate value of the touch screen display region corresponding to the signal; (3) converting and simulating the coordinate value into the format of resistor type touch screen output signal by an analog-to-digital converter, and connecting to the resistor type touch screen by a resistor screen signal line; (4) meanwhile, connecting the coordinate value of the touch screen display region to the projecting type capacitor touch screen by a serial communication protocol signal line. The projecting type capacitor touch screen output mode contains a numerical digit serial interface and the analogue signal interface of the analogue resistor type touch screen at the same time, can greatly reduce the required time and technology threshold of the common resistor type touch screen to upgrade to capacitor type touch screen scheme, and provides a great leap in the popularization and production of projecting type capacitor touch screen.

Description

Technical field: [0001] The invention relates to the technical field of projected capacitive touch screens, in particular to the technical field of projected capacitive touch screen interfaces. Background technique: [0002] At present, projected capacitive touch screens at home and abroad all use digital serial interfaces, such as 12C (inter integrated) or SPI (serial peripheral interface) communication protocols, which need to be adjusted on different operating platforms, and for different It usually takes a lot of manpower and time to adjust the CPU and operating system, which greatly hinders the popularization of projected capacitive touch screens. The resistive touch screen, which is very popular nowadays, has the disadvantages of low light transmittance, high wear rate, poor surface flatness, and inconvenient operation. If the output mode of the projected capacitive touch screen can include digital serial interface and analog signal interface at the same time, it will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/045
Inventor 杨文振
Owner SUPER PIONEER