媒体终端触摸屏的设计与实现

发布时间：2018-06-02 13:12

本文选题：媒体终端 + 红外触摸屏　；参考：《华中科技大学》2011年硕士论文

【摘要】：为了实现网络层互联互通,无缝覆盖,业务层相互渗透和交叉,应用层趋向统一使用IP(Internet Protocol)协议,建立在三网融一之上的媒体终端产品应运而生。该终端集广告信息发布和互动业务为一体,结合互动媒体业务平台,向用户提供高质量的媒体信息和多种实时的互动业务。媒体终端在硬件上,采用嵌入式Linux操作系统,基于凌动ce3100处理器,选取红外线式触摸屏。红外触摸屏是媒体终端中不可或缺的关键子模块之一。当前媒体终端产品中存在的触摸屏驱动设计落后、互动单一、校准失灵等问题值得研究。解决这些问题,以期使触摸屏达到符合媒体终端功能、体积、成本和功耗等方面的较高要求。主要研究内容是根据媒体终端的需求,提出红外触摸屏的设计与实现方法,并结合屏幕键盘的实例来配合触摸屏的应用。具体工作着重于驱动程序和五点校准算法的设计,驱动程序不采用传统字符设备驱动设计方法,而是基于Linux新内核Input子系统和platform总线架构来实现的。最后对屏幕键盘的应用给予了分析。红外触摸屏因其出色的透光率,精确的触摸定位以及适应恶劣环境的耐磨抗暴性,备受多媒体终端的青睐。它使得终端在程序调试、后台维护、运营服务等方便具有良好的人机交互简便性,实现稳定、直观、易操作的触摸效果,从而提高媒体终端的用户体验满意度,产生积极的市场效应。
[Abstract]:In order to realize network layer interconnection, seamless coverage, service layer penetration and crossover, the application layer tends to use IP(Internet protocol in a unified way, and the media terminal products based on three networks emerge as the times require. The terminal integrates advertising information publishing and interactive service, and combines with interactive media service platform to provide users with high quality media information and multiple real-time interactive services. In the hardware, the media terminal adopts embedded Linux operating system, based on the ce3100 processor, select the infrared touch screen. Infrared touch screen is one of the key modules in media terminal. At present, the design of touch screen driver in media terminal products is backward, the interaction is single, and the calibration failure is worth studying. To solve these problems, the touch screen can meet the requirements of media terminal function, volume, cost and power consumption. According to the demand of media terminal, the design and implementation method of infrared touch screen is put forward, and the application of touch screen is combined with the example of screen keyboard. The specific work focuses on the design of driver and five-point calibration algorithm. The driver is based on Linux new kernel Input subsystem and platform bus architecture instead of traditional character device driver design method. Finally, the application of screen keyboard is analyzed. Infrared touch screen is favored by multimedia terminals because of its excellent transmittance, accurate touch location and wear resistance and riot resistance. It makes the terminal in the program debugging, background maintenance, operation services and other convenience with good man-machine interaction simplicity, achieve stable, intuitive, easy to operate touch effect, thereby improving the media terminal user experience satisfaction, Produce positive market effect.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP334.3

【参考文献】