Diese Präsentation wurde erfolgreich gemeldet.
Wir verwenden Ihre LinkedIn Profilangaben und Informationen zu Ihren Aktivitäten, um Anzeigen zu personalisieren und Ihnen relevantere Inhalte anzuzeigen. Sie können Ihre Anzeigeneinstellungen jederzeit ändern.

Vhdl implimentation of lzw compression algorithm - ECE projects

145 Aufrufe

Veröffentlicht am

Veröffentlicht in: Bildung, Technologie, Design
  • Als Erste(r) kommentieren

  • Gehören Sie zu den Ersten, denen das gefällt!

Vhdl implimentation of lzw compression algorithm - ECE projects

  1. 1. This document contains text automatically extracted from a PDF or image file. Formatting may have been lost and not all text may have been recognized. To remove this note, right-click and select "Delete table".
  3. 3. 48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Website: www.researchprojects.info Phone: 9952749533, VHDL IMPLIMENTATION OF LZW COMPRESSION ALGORITHM Abstract The adaptive Lempel-Ziv-Welch general-purpose algorithm and its implementation suitable for packet radio telephone transmission, and archival storage. While the statistical variable- length Huffman technique compresses text by 20%,the LZW technique can compress data (text, numeric, mixed, and bit-mapped images)by 40 to 60%. The adaptive LZW algorithm has very simple logic, leading to inexpensive and fast implementations. Good LXW implementations use 9- to 16-bit codes, handling most applications.A12-bit code is suitable for medium-size files. Efficiency improves with larger codes. A tight coding of the algorithm can compress 75 Kbytes in a second on a 1-MIPS machine. This project is implemented using VHDL &simulation results are verified. It encourages concurrent development in the area of data compression. The further enhancement of this project is to achieve more percentage of compression with less hardware.