• A seven-year battle between the US Federal Trade Commission and Rambus, the memory-chip specialist, has ended in defeat for the FTC. The regulator had  ruled that Rambus plotted to get secretly patented technology it developed included in industry standards, but an appeal court had thrown out its ruling and, on Thursday, the FTC dropped the rest of its case.
• Nintendo was the big winner in April in the US video game market. According to the NPD research firm’s monthly figures, it sold 1.08m units of its dual-screen handheld console following the introduction of the new DSi model on April 5. That was nearly double unit sales of 563,000 in March.

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