Chip company S3 has filed a patent infringement action against Nvidia, which was sued by Silicon Graphics earlier this year.
Like Silicon Graphics, S3 claims that Nvidia is infringing patents with its Riva accelerators. Nvidia claimed the S3 action is without any foundation and it intends to fight the case vigorously, according to a brief company statement.
S3 said that the patents in question relate to VGA controllers, video windows and multimedia.
Silicon Graphics' Mips processor unit is currently proceeding with legal claims against Nvidia relating to texture mapping technology.
This case highlights a major semiconductor pitfall - there is such a dearth of highly trained engineers that companies frequently poach employees, who bring ideas with them. Nvidia had hired former SGI employees.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007