本文選題：電子紙　切入點：GUI　出處：《西安電子科技大學》2012年碩士論文

【摘要】：電子紙顯示技術經過多年的發(fā)展已經相對成熟，它的發(fā)展為開發(fā)新型便攜式顯示設備提供了技術基礎。其可視性好、功耗低和方便攜帶等特點促使電子紙被應用到越來越多的領域當中�；谝陨咸匦�，電子紙顯示設備比較適合應用于嵌入式地理信息系統(tǒng)（Geographic Information System，GIS）領域。但是電子紙也存在諸如刷新速度慢、刷新出現殘影等方面問題，這在很大程度上影響了電子紙技術的發(fā)展和普及。 針對目前電子紙顯示技術中存在的問題，本文從軟件方向著手，設計與實現了專門適用于電子紙顯示設備的圖形用戶接口（Graphical User Interface，GUI），并在該GUI基礎上設計和實現了一套具有基本功能的GIS系統(tǒng)。在此過程中完成的主要工作如下： 1)深入研究了電子紙的顯示原理，并與普通的電子顯示設備進行比較，對電子紙的刷新和顯示特性給出了詳細的分析和說明。 2)分析并比較了常見的GUI庫，結合電子紙的刷新和顯示特性，設計了一套專用于電子紙的GUI庫，并且在嵌入式Linux平臺下對GUI庫進行了實現。該GUI首先實現了最底層的觸摸消息響應機制，并為使用該GUI的上層應用提供了消息響應接口；然后針對電子紙的刷新特性，提供了具有良好刷新效果的界面；并且還針對8位灰度顯示級別封裝了圖形、圖像及文字信息處理的常用方法；另外該GUI還向用戶提供了便于編程的常見組件和調用接口。 3)最后基于該GUI設計并實現了一個具有基本地理信息處理功能的嵌入式GIS系統(tǒng)，該GIS系統(tǒng)具有較好的刷新和顯示效果，它具備常見的地理信息處理功能，，如：放大、縮小、漫游、簡單查詢和標注。針對該GIS系統(tǒng)，本文還提出了一套地圖緩存的優(yōu)化算法，該算法進一步提高了地圖的顯示速度。 本文所設計的GUI庫和嵌入式GIS系統(tǒng)在實際科研項目中得到了運用，根據PC模擬的測試結果和電子紙實際應用的反饋情況表明，系統(tǒng)能夠穩(wěn)定、高效的運行，達到了預期的效果。
[Abstract]:After many years of development, electronic paper display technology has been relatively mature, its development provides a technical basis for the development of new portable display equipment.Its good visibility, low power consumption and portability promote the application of electronic paper in more and more fields.Based on the above characteristics, electronic paper display equipment is more suitable for application in the field of embedded Geographic Information system (GIS).However, electronic paper also has some problems, such as slow refresh speed and residual image, which greatly affects the development and popularization of electronic paper technology.In view of the problems existing in the electronic paper display technology, this paper starts from the direction of software.This paper designs and implements a graphical User interface (GUI) for electronic paper display devices. Based on this GUI, a basic GIS system is designed and implemented.The main tasks accomplished in this process are as follows:The main contents are as follows: 1) the display principle of electronic paper is deeply studied, and compared with the ordinary electronic display equipment, the refresh and display characteristics of electronic paper are analyzed and explained in detail.2) the common GUI library is analyzed and compared. Combining with the refresh and display characteristics of electronic paper, a set of GUI library for electronic paper is designed, and the GUI library is implemented on the embedded Linux platform.The GUI firstly implements the lowest touch message response mechanism, and provides a message response interface for the upper application using the GUI, and then provides an interface with good refresh effect for the refresh characteristics of electronic paper.It also encapsulates the common methods of graphic, image and word information processing for 8-bit gray-scale display level. In addition, the GUI also provides users with common components and calling interfaces that are easy to program.3) finally, an embedded GIS system with basic geographic information processing function is designed and implemented based on the GUI. The GIS system has better refresh and display effect.Roaming, simple query and tagging.For the GIS system, this paper also proposes a set of map cache optimization algorithm, the algorithm further improves the speed of map display.The GUI library and embedded GIS system designed in this paper have been used in the actual scientific research project. According to the test results of PC simulation and the feedback of electronic paper application, the system can run stably and efficiently, and achieve the expected effect.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP368.1

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本文編號：1701912