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This paper describes a method of digital audio public address (PA) system based on Ethernet. The main framework of the system is proposed and the core techniques are analyzed. The hardware design of network audio devices and software design are described in details in this paper. CYCLONE II EP2C5FA484 programmable FPGA chip and audio codec VS1003 are proposed in the network audio terminal design,...
Rich media application enables plenty of interactive, information-rich services to enhance end user's viewing experience. In current standards released for such service, only one rendering space is defined to handle multiple types of content belonging to the same service. However, a new trend is to assign more than one terminal device to render rich media application in a cooperative way inside a...
Community Health Information Tracking System using Short Message Service (chitSMS) is an extension of CHITS which is a system that stores health records of patients in the barangay. Another project incorporated a mobile component in CHITS, enabling the health worker to visit the patient, do routine check-ups and medical services, and update CHITS when the health worker returns to the health center...
With recent advances in video encoding and network technology, media streaming services are getting popular. Media streaming system based on the traditional server/client or CDN architecture has a scalability problem, and peer-to-peer media streaming system using resources of peers in the system can provide better scalability. Previous media streaming services are suited to play stored contents such...
In this paper, a multimedia-support e-learning platform called WebELS (Web-based e-learning system) for non-broadband users is introduced. The system includes three main modules: editor, player and manager. Both asynchronous and synchronous e-learning are supported on this platform. Moreover, some technologies are implemented to make the multimedia contents possible for users without wideband network...
With the increasingly widespread application of the network, a distributed operating system based on Linux cluster has been developing rapidly. This paper presents a kernel level distributed interprocess communication system model with support for distributed process synchronization and communication. This system model uses the System V interprocess communication programming interface and enhances...
In distributed file systems, a need may arise for relocation of the file system to a different server. This is one of the fundamental mechanisms for ensuring file service availability for the geographically distributed clients. However, migration or replication in many such systems requires that the client or client side daemons take active measures for accessing the alternate servers, thus compromising...
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