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In the past several decades, the Japanese multimedia communication industry has been a leading place in the world. Especially, it has a certain influence in the Asian region. It can be said to lead the trend, causing all walks of life to follow. Although in now Korean wave swept the world, Japan also keeps the creative value even then Korean have to learning with it. We have a study of four representative...
The Fat File System has a clear structure, can be managed easily. At the same time, the simplified structure has some shortage, such as low speed. Attempt to use map management and B+-Tree as new ways to improve it, and store and manage the B+-tree index with map. File system comparative test data can be clearly demonstrated: The use of B + tree index significantly improves the query speed of FAT...
In VoIP networks, SIP encourages the convergence of telephony and Web-based services. The Web phone has become an attractive tool for developing VoIP services. In this paper, we use open source software to build VoIP platform providing the Web phone, voice, video, IM, and prepaid services. A billing system and Web pages are also developed for the administrator providing the administrative functions...
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