david neary dnearywanadoofr ronan waide wrote skimmed patent appears describing sort image compression algorithm gels less jpeg mechanism since dont quite understand jpeg works hard math im dumb comp eng hard math jpeg straight blockbased dct quantisation oldest image compression algorithm think certainly predates 1986 really idea claim theyve patented doin dct 8x8 blocks image quantising resulting coefficients dct general im extremely skeptical whole story dont know exactly matches jpeg im curious whether covers mpeg described context video streams rather stills vague impression mpeg jpeg compression techniques similar one patents references also seems hint mpeg mpeg 1 2 4 7 theyre different compression algorithms anyway heres ogg hopefully future mpeg4standard compression algorithm project comes fingers crossed wouldnt worry jpeg thing addition patent runs next year would suggest failed protect ip 15 years iirc responsibility claim would probably never hold court cheers dave david neary marseille france email bolshgimporg irish linux users group iluglinuxie httpwwwlinuxiemailmanlistinfoilug unsubscription information list maintainer listmasterlinuxie mon 22 jul 2002 103712 0200 ilug jpeg patented