| 摘要 |
PURPOSE:To improve data compression and restoration processing speeds. CONSTITUTION:This device is constituted of a data compressing circuit and a data restoring circuit. The data compressing circuit is constituted of a dictionary retrieving means 1, a dictionary registering means 2, an encoding means 3, an initial dictionary access means 4, a regular dictionary access means 5, an initial dictionary D1 and a regular dictionary D2. Among them, the dictionary retrieving means 1, the dictionary registering means 2 and the encoding means 3 are subjected to parallel processing by a pipeline. Also, the data restoring circuit is constituted of a decoding means 11, a dictionary retrieving means 12, a first accumulating means 13, a second accumulating means 14, an output selecting means 15, a document registering means 16 and a dictionary access means 17. Amount them, the decoding means 11, the dictionary retrieving means 12 and the output selecting means 15 are subjected to parallel processing by a pipeline. |
