| 摘要 |
PURPOSE: To enable a disk storage device used for video server, etc., to read out data at a high speed for reproducing compressed dynamic image data. CONSTITUTION: The storage disk 13 of a disk storage device stores I frames which are data-compressed in one frame so as to eliminate redundancy at storing positions from which the frames can be read out as continuously as possible. In addition, a sufficiently large capacity is given to the buffer of the disk storage device which temporarily stores data read-out from the disk 13. Therefore, only the readout of the I frames which are useful for high-speed reproduction becomes faster and, when the buffer has a capacity of two or more cylinders, the reading-out speed for ordinary reproduction does not become slower as compared with the conventional example. |
