【作者】 王媛；

【导师】 张三元；

【作者基本信息】 浙江大学 ， 计算机应用， 2006， 硕士

【摘要】 随着信息社会的不断发展,蓝牙技术在信息终端,尤其是在多媒体手机终端上得到了广泛应用。蓝牙技术已经成为个人信息的重要获取途径,通过蓝牙技术将数字媒体内容(图象、音乐、视频等)发送到个人信息终端上,将形成巨大的商业应用价值。蓝牙日益普及,基于蓝牙的信息服务系统也将迅速普及,必将推动起一种全新的社会传媒形式。 本文基于蓝牙通信技术,以蓝牙手机作为信息终端,围绕信息服务提供问题进行了研究。理论上,探讨了此类信息服务系统的概念模型,明确了协议栈的结构,为信息服务系统的设计与实现提供理论依据。实践上,结合自助终端和信息广播两种不同应用,给出了实用化的软硬件设计方案,设计实现了两种原型系统,为蓝牙信息服务产品的研制提供了新思路。 本文的主要工作包括以下几方面: 第一、围绕短距离无线通信技术,从数字媒体技术发展的角度,研究了基于蓝牙传输的信息服务技术的当前进展,总结了研究现状。 第二、研究了蓝牙的技术特点和应用领域,提出了适合蓝牙传输的数字媒体内容以及相应的文件格式要求。 第三、研究了基于蓝牙传输的信息服务的概念模型。提出了基于蓝牙传输的信息服务的四层概念模型,并着重探讨了通信概念模型,分析了push、pull、self-help、streaming等四种蓝牙信息服务逻辑模型。 第四、设计实现了蓝牙硬件驱动和蓝牙协议层次。以BlueZ协议栈为基础,在Linux操作系统上进行编程,实现了信息服务模型所需的完整协议栈。 第五、蓝牙实现技术研究。结合实际应用需求,从系统层面进行设计,实现了e-space自助多媒体终端、e-casting信息广播站两个原型系统。更多还原

【Abstract】 With the development of information society, bluetooth has been widely used in information terminal, especially in multimedia cell-phone terminal. Bluetooth has become an important approach to get personal information, through which, digital media content (including image, music, and video) can be sent to personal information terminal, thus producing huge business value. The increasingly popularization of bluetooth and information service system based on bluetooth will surely promote a brand-new media form.Based on bluetooth communication technology and with bluetooth cell-phone as information terminal, this paper studies the problems of providing information service. In theory, it probes into the concept model of such information service system, specifies the structure of protocol stack, and provides theory for the design and realization of information service system. In practice, by combining self-help terminal and information broadcasting, this paper presents a practical scheme for software and hardware design, realizes two prototype systems, and offers a new idea for developing bluetooth service products.This paper focuses on the following aspects:1. Focused on short-range wireless communication technology, this paper studies the current progress of information service technology which is based on bluetooth, and summarizes current situation from the point of digital media technology development.2. The paper researches the technology features and application fields of bluetooth, and offers digital media content which is suitable for bluetooth transmission, and corresponding file format requirements.3. The paper studies the concept model of information service which is based on bluetooth transmission. It brings forward four-layer concept models, especially emphasizing on communication concept model, and analyzes four logical models of bluetooth information service, namely, "push", "pull", "self-help", and "streaming".4. The paper realizes bluetooth hardware drive and bluetooth protocol layer. Based on BlueZ protocol stack and programmed on Linux operating system, we design the whole protocol stack needed by our information service models.5. The research of realization technology of bluetooch. Combined with practical application demands, designed from the system layer, we realize two prototype systems: "e-space" self-help multimedia terminal and "e-casting" information push station.更多还原