Public Patent Foundation challenges JPEG patent

Public Patent Foundation challenges JPEG patent

Not precisely. Tescher et al (4,541,012) is more specific as to the field it covers. Note in the PubPat argument that "Tescher et al teaches ...", not "Patent 4,541,012 covers ...". By making the methodology for compression understandable, and explaining the concepts involved, Tescher et al taught a generation of people how to compress a variety of similarly constituted things, while patenting a method for reducing video bandwidth.

Patents make public a vast amount of information while obtaining a relatively small benefit, sometimes. :)