Chun-Hung Wen

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This paper presents the design of a multimedia storage system for on-demand playback. The design stresses effective utilization of disk bandwidth with minimal data buffer to minimize overall system costs. The design procedure is most distinctive in the following two aspects: 1. It bases on a tight upper bound of the lumped disk seek time for the Scan disk(More)
This paper presents a comprehensive procedure to design multimedia storage systems for on-demand playback. The design stresses effective utilization of disk bandwidth with minimal data buffer to minimize overall system costs. The design procedure is most distinctive in the following two aspects: 1. It bases on a tight upper bound of the lumped disk seek(More)
This paper proposes a design procedure that exploits storage devices with diierent cost/bandwidth and cost/capacity ratios to build a hierarchical storage system for video-on-demand with minimum cost. The storage system is assumed to have two levels of hierarchy. The level-1 storage devices feature a low cost/bandwidth ratio and a high cost/capacity ratio.(More)
In this paper, we propose the so-called generalized relay mechanism to exploit semiconductor memory to upgrade the service capacity of video-on-demand servers. The design of the generalized relay mechanism is aimed at optimizing allocation and tradeoo of the memory resource and the disk bandwidth resource. It is expected that exploiting semiconductor memory(More)
This paper proposes a novel data retrieval scheme that achieves effective utilization of disk bandwidth for designing fully interactive video-on-demand systems. The main distinctions of the proposed data retrieval scheme are (1) it requires no extra disk bandwidth to support interactive features such as fast forward search and fast backward search; and (2)(More)
This paper discusses the effect of employing advanced branching mechanisms in superscalar processors. The motivation behind employing advanced branching mechanisms in superscalar processors is to reduce the control dependence, or in other words the number of branch operations, in the program so that instruction-level parallelism can be exploited more(More)
This paper presents a study on exploiting semiconductor memory to upgrade the service capacity of video on-demand playback systems. The basic idea behind exploiting semiconductor memory is that, if we can relay the data of highly frequently accessed programmes from one access request to another, then we can upgrade the service capacity of the system without(More)
This paper proposes a novel data placement and retrieval scheme based on a general two-level disk array architecture for designing interactive video-on-demand systems. The proposed scheme is of significance because the two-level disk array architecture exploits both parallelism and concurrency offered by fine-grain and coarse-grain disk array structures.(More)