CNET News: Bell Tolling for PNG Graphics Format?
Jun 10, 2003, 02:30 (13 Talkback[s])
(Other stories by Paul Festa)
"A patent underlying one of the Web's most popular graphics
formats is set to expire later this month, raising the question of
whether a rival, open format, created as a royalty-free
alternative, will become obsolete.
"The situation has also rekindled debate about patents,
innovation and the freedom of communication.
"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..."