Because of Moore's law, the data stream which is stored and retrieved from RAM can be bypassed through a hard wired compression engine. This compression/decompression IC engine (CDIC) is a new VLSI design for the compression/decompression of information that is to be stored and retrieved from the memory. This IC can be used without any tradeoffs like performance degradation. The algorithm used for compression and decompression to be carried out is Lempel- Ziv-Welch (LZW) algorithm The use of a CDIC for the compression/Decompression operation means that the chip would prove to be highly cost efficient when compared with the cost of the memory that it is going to be replaced. A rough comparison could be given to support the claim that it works out cheap. A chip as complicated as the 89C51 (microcontroller) costs Rs. 47.75. So it is understandable that our CDIC would cost a large cheaper than that. Our CDIC ensures that a compression rate of 43% is provided in the worst case. Therefore a RAM of 128 Mb capacity could be treated as a 184 Mb saving up to Rs. 400.
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