SAN FRANCISCO (Reuters) - Semiconductor company Hynix agreed on Monday to pay memory chip designer Rambus $396 million in royalties to help resolve a long, costly patent fight, but other issues remain.

U.S. District Judge Ronald Whyte had ordered the two sides to resolve the issue. They filed a joint proposed final judgment with him on Monday in his San Jose, California, court, but said they still disagree on some issues.
Rambus is involved in legal disputes around the world over its contention that Hynix and other chipmakers have violated its patents on the dynamic random access memory (DRAM) that is used in virtually all personal computers.
The adversaries said in their joint filing they disagreed whether Hynix should pay the money now or later, and whether the cash should be turned over to Rambus or paid into escrow.
Hynix will pay $349 million for the patent violations and roughly another $48 million in interest. The official document filed with the court left the amount of interest blank, depending on what date the order becomes official.
“While the Court still needs to resolve some outstanding issues, we are pleased to have reached agreement with Hynix on a number of terms,” Thomas Lavelle, senior vice president and general counsel at Rambus, said in a statement.
Rambus had argued that it had a right to the money because it invented the technology manufactured and sold by Hynix.
Hynix had contended that Rambus’ patents are invalid, but a jury found in April 2006 that Hynix had infringed on Rambus patents and owed hundreds of millions in damages.