Abstract : the implementation of scene monitoring system based on virtual reality is introduced . the developing concept and method for two critical technologies , i . e . the virtual scene graphic interface and the library of category for virtual device , are described in detail 文摘:介绍了基于虚拟现实的现场监控系统的实现方法,详细阐述了虚拟场景图形界面及虚拟设备类库这两项关键技术的开发思路和方法。
These typically will be applications for rich desktop browsers where browser behavior variations are required , or for applications to be targeted by a constrained device class for which mobile controls and their feature set is not warranted 这些情况通常适用于多形式桌面浏览器(其中要求浏览器行为变化)的应用程序或由存在约束的设备类(对于这些设备类而言,移动控件及其功能集无法保证)使用的应用程序。
Chapter two focuses on the embedded linux , going deep into it ’ s structure and analyzing the real - time problem in constructing such a system . usb is discussed in chapter three , where the implementation of usb protocol and development of the printer class usb driver in linux o / s are described . in chapter four , cups ( common unix printing system ) is introduced and how to construct printing system is analyzed . the kernel of the printer driver under embedded linux is implemented with the aid of apdk from hp 第三章讲述usb在linux下的实现问题和usb中打印机设备类驱动程序的开发;第四章首先介绍通用unix打印系统( commonunixprintingsystem ) ,分析在linux平台下如何建立打印系统;再对惠普apdk嵌入式打印机驱动程序开发包进行分析,实现嵌入式linux下打印机核心驱动程序;最后介绍jpeg图象格式到光栅数据格式转换的过滤器的设计。
The company major in the technology development , transfer , service and consultation of high polymer material especially themo - setting resin and plastics with 6 senior engineers among which one is professor grade , over 20 engineering and equipping technicians . the company equipped with advanced science research and testing equipments and have rich experience in industrializing science and research results 本公司主要从事高分子材料特别是热固性树脂及塑料的“四技”技术开发技术转让技术咨询技术服务工作。公司有高级工程师6名,其中教授级高工1名。其它工程设备类技术人员20多名。
With the comparison between the framework of device driver in linux2 . 4 and linux 2 . 6 and the studies on a great of source codes , a deep research has been conducted into the unified device model of linux 2 . 6 . furthermore , this paper analyzes the main data structures and the framework of kobjects to make an explicit understanding of the abstract mechanism of the class of devices . in practical project , the developing and research task of the bsp based on arm + linux platform is accomplished with the support of research work 本文对比了linux2 . 4和linux2 . 6的设备驱动程序框架,同时结合大量源代码的研读,对linux2 . 6内核的统一设备模型进行了深入的研究,剖析了内核对象机制的主要数据结构及驱动程序设计框架,理解了该模型对设备类的抽象机制,并在实际的项目实践中,结合所作的研究工作,圆满完成了基于arm + linux开发平台的bsp开发任务。