基于数字媒体技术的乘客信息系统软件框架设计

Design of software structure of Passenger Information System based on digital media technology

鉴于传统广电模式的乘客信息系统(PIS)具有成本高、信息原子性丢失和不便于网络化运营等缺点,本文提出采用基于数字媒体技术搭建PIS,并对多媒体编辑与发布、多媒体描述文件结构、数字视频合成3部分内容进行重点论述。由于其采用开放的技术架构和符合国际标准的多媒体文件描述方式,本系统符合PIS向网络化运营管理发展的趋势。

The traditional broadcasting mode of Passenger Information System （PIS） had the weakness of high cost, information atomic loss and unconvenient for network operators and so on. This paper put forward the design of PIS based on the digital media technology. It was analyzed three important parts which were include the edit and release of multimedia, the structure of multimedia description file, synthesized process of digital media. The design adopted opening technical architecture and in line with international standards of multimedia description file, so it was adapted to the development trends of PIS network operation management.