The Design And Implementation Of Network Teaching System Supporting Miniature Electronic Whiteboard

The dissertation has completed the partial contents of Jilin Province Science and Technology Development Plan Project "Research on the fundamental tool and application system of informationization teaching".With the development of computer network technology, people's life, education and the mode of thinking all change along with it. The combination of network and education has raised the revolution in the concept of education. Network teaching, as a new teaching mode, has broken space-time concept, and fully aroused the enthusiasm which the student independently studies, is advantageous to the student individuality development and the innovation ability raise. The network teaching system is the information exchange platform for network teaching, has provided the biggest power support for the network teaching development, therefore the research on network teaching system, more and more receives social attention. Subminiature wireless localization electronic whiteboard is the newest handwriting input equipment. It mainly completes the basic functions of real-time handwriting input, the computer screen handwriting and operating the computer screen. Integrating subminiature electronic whiteboard into the network teaching system realizes network hand-written teaching, which manifests advanced and the convenient teaching mode that greatly improves the teaching quality.The dissertation has designed and realized a network teaching system supporting miniature electronic whiteboard. The dissertation introduces the miniature electronic whiteboard to the design of the network teaching system. And the network teaching system supporting miniature electronic whiteboard is divided into three parts: the miniature electronic whiteboard hand-written function software, and the on-line subsystem and network Q/A subsystem. The main work and contribution as follows:(1) Hand-written software of the miniature electronic whiteboard is designed in the paper. The research on the subminiature electronic whiteboard software used in computer realizes the basic functions that including real-time writing and simulating the mouse. The algorithm correcting an error is used in the process of calibration. which realizes the precise localization on the handwriting written by the signal pen, all that provide the better technical guarantee for the realization of handwriting input function in network teaching system.(2) Design and implementation of online homework subsystem are based on the B/S frame and supporting subminiature electronic whiteboard. It provides the web-based homework environment, and realizes non- paper homework. The system main modules includes: the homework assignment, the homework submission, the homework correction, the homework statistics, the search and inquiry, the homework forum, the excellent homework show, the teacher resources, the management and maintenance, the database design, the interface design jointing CSS and so on. Integrating subminiature electronic whiteboard into the online homework system which solves handwriting input that is universal existent question in network homework system, the computer screen handwriting and correcting handwriting homework online are realized.(3) Design and implementation network Q/A subsystem are based on the C/S frame and supporting subminiature electronic whiteboard. It builds the real-time Q/A interactive platform between the teachers and students, which achieves excellent education resource sharing. The system divides into the server terminal, the teacher terminal and the student terminal, and detailed construction design and the functional design to every terminal system have been completed. The system main module includes: network electronic whiteboard multi- people sharing writing, audio and video communication, show and control, file transfer, internet browsing, database design, interface design using Xtreme Toolkit and so on.The main contents of this paper are as follows:In the first chapter, the dissertation outlines the research background, significance and present situation of the network teaching system supporting miniature electronic whiteboard. And the principal route of the system research is elaborated in detail. Finally, the main research content is proposed.The second chapter has related in detail some technical thought and methods used in the system research.The third chapter introduces the overall frame of the network teaching system supporting miniature electronic whiteboard. And to its three constituents, the miniature electronic whiteboard hand-written function software, the on-line work subsystem and the network Q/A subsystem has separately carried on the overall design.The fourth chapter has carried on the modular analysis to the detailed realization of the miniature electronic whiteboard hand-written function software.The fifth chapter analyzes the implementation in detail of the on-line work subsystem supporting miniature electronic whiteboard, with system running result pictures enclosed to partial modules. Finally related appraisal has been made to the subsystem.The sixth chapter analyzes the implementation in detail of the network Q/A subsystem supporting miniature electronic whiteboard, with the running result pictures to the server port, teacher port and student port. Finally related appraisal has been made to the subsystem.The seventh chapter is the summarization and expectation of this paper.The innovations of this paper are as follows:(1) The research on the the algorithm of calibration of the subminiature electronic whiteboard realizes the precise localization on the handwriting written by the signal pen.(2) At present some teaching systems in the network only support the text input, but does not support the hand-written input. In order to solve this difficult problem, the dissertation integrates subminiature electronic whiteboard into the network teaching system, and realizes handwriting homework and handwriting Q/A in network teaching.(3) The Q/A system in the network generally only includes the teacher terminal and the student terminal, the very big data transmission and the relay pressure are withstood by the teacher terminal, which must affect the teacher's real-time teaching. The network Q/A system researched by the dissertation was divided into the server terminal, the teacher terminal and the student terminal, a large amount of data was relayed by the the server terminal, which can reduce the data relay pressure, so the transmission speed of the network data can be improved greatly.