Title :
Continuous media storage system supporting VBR streams
Author :
Nakajima, Tatsuo ; Tezuka, Hiroshi
Author_Institution :
Japan Adv. Inst. of Sci. & Technol., Ishikawa, Japan
Abstract :
In this paper, we describe a continuous media storage system that supports the constant frame rate retrieval with variable bit rate streams. The novel characteristics of our storage system is as follows: The utilization of disk bandwidth is higher than traditional continuous media storage systems since the admission test of our storage system adopts average bandwidth usages of respective streams by introducing a novel media scaling technique in order to avoid degrading the quality of a media stream significantly when the total bandwidth exceeds 100%. Our storage system takes into account dynamic QOS control schemes. Also, it controls QOS values of respective streams according to their contents. First, we describe a media scaling technique for realizing the above characteristics, and present its scheduling algorithm and disk layout policy. Also, we present some results demonstrating the effectiveness of our approach
Keywords :
information retrieval; multimedia computing; variable rate codes; VBR streams; constant frame rate retrieval; continuous media storage system; disk bandwidth; disk layout policy; dynamic QOS control schemes; media scaling technique; scheduling algorithm; variable bit rate streams; Bandwidth; Bit rate; Control systems; Degradation; Multimedia computing; Scheduling algorithm; Streaming media; System testing; Throughput; Transform coding;
Conference_Titel :
Real-Time Computing Systems and Applications, 1996. Proceedings., Third International Workshop on
Conference_Location :
Seoul
Print_ISBN :
0-8186-7626-4
DOI :
10.1109/RTCSA.1996.554957
