We have developed a high-speed image file server for a super-high-resolution image display system that can transfer image data at a sustained rate of 24 MB/s. To achieve that data-transfer rate, we made a multidisk controller that can control multiple disk units in parallel. In this server, image data is read from disk units in the storage unit and sent to the display system over the high-speed data bus. We used two storage units for the high-speed image file server, and the measured data-transfer rate was 12 MB/s per storage unit giving a total of 24 MB/s.
There are some problems how do we storage and manage the big volume data. On the other hand in the computer area, it is required to storage the big volume of data which is over 100Tbytes. This report introduces the tape library that can storage and manage the big volume of data over 1Pbytes.
The performance of striping-based video servers really depends on the placement of video segments on the disks. However, it seems to be virtually impossible to find the optimal one out of them because there are a great number of placement patterns. In this paper, we propose a bland-new method that finds the optimal placement pattern of video segments solving the constraint optimization problem. First, finding the optimal segment placement is converted into the form of a constraint optimization problem, then it is solved using the GA (Genetic Algorithm). Solving this problem leads to find the optimal placement pattern based on the access probabilities of the segments. In the formulation, the objective functions investigate their effect on the performance of the server. As a result, the placement pattern that provides the required performance can be easily found by our method. In basic simulations, our proposed method was able to find a placement that is superior to other conventional placements.
We studied a Detection of Commercial Messages on Tv Broadcast Programs for VCRs. We were able to recognize Commercial Messages and Programs by detecting special points of Audio and Video signal and measurirg their interval. As a result, We realized "CM SKIP"on all TV programs. This is one of more convenient methods for VCRs.