Originariamente inviato da mcz
Tornando al brevetto, sul sito ufficiale si parla di standard e di opensource.
Come è possibile che sia stato brevettato.[...]
Perche` da una rapida scorsa quel brevetto pare molto piu` generico, a giudicare dall'abstract:
codice:
The present invention relates to methods and apparatus for 
processing signals to remove redundant information thereby 
making the signals more suitable for transfer through a 
limited-bandwidth medium. The present invention specifically
relates to methods and apparatus useful in video compression
systems. Typically, the system determines differences 
between the current input signals and the previous input 
signals using mean-square difference signals. These 
mean-square signals are processed and compared with one or 
more thresholds for determining one of several modes of 
operation. After processing in some mode, the processed 
signals are in the form of digital numbers and these digital
numbers are coded, using ordered redundancy coding, and 
transmitted to a receiver.
Anche se su due piedi mi viene in mente piu` MPEG piuttosto che JPEG