In the U.S., the patent for the Lempel-Ziv-Welch, or LZW, compression algorithm expires June 20. LZW forms the basis of the popular GIF (Graphics Interchange Format).

Until now, compression algorithms such as the Lempel-Ziv-Welch (LZW) have been implemented in software. This provided acceptable compression performance in many older systems.

In the United States, the patent for the Lempel-Ziv-Welch, or LZW, compression algorithm expires June 20. LZW forms the basis of the popular GIF (Graphics Interchange Format) design.

Hi,I'm working on a LZW compression assignment in Java. For compression, I start with the initial dictionary of all the ascii characters so 0 - 255 are stored as codes.However, once I get repeated ...

Unisys attracted criticism when it said that Web sites that provide GIFs for download that were created with an unlicensed copy of the Lempel-Ziv-Wlech (LZW) compression algorithm were guilty of ...

The GIF format uses the LZW compression algorithm, which was patented by Unisys, and publishers of applications that read and write GIF87a and GIF89a images were required to obtain a license and ...

The last two are elaborate procedures that have established themselves as industry standards: LZW and JPEG. Data Compression Strategies Table 27-1 shows two different ways that data compression ...

Several algorithms for data compression may be more familiar – Huffman coding, LZW compression – and some a bit more arcane.