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Rambus trousers Mitsubishi DDR deal

Oh how the Dramurai are crumbling

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Mitsubishi is the latest of the big Japanese players to accept that Rambus holds valid patents for synchronous memory (SDRAM) and double data rate (DDR) memory.

Rambus announced last night that Mitsubishi had signed a licence agreement for these two types of memory, a move which is likely to help it in its outstanding law case against Micron.

As usual, Rambus has turned the screw on DDR and SDRAM, with Mitsubishi paying more for DDR and SDRAM and the controllers than for its own proprietary memory technology.

This Rambus strategy is partly to encourage the adoption of Rambus memory, and also to penalise the adoption of DDR.

Mitsubishi's licence is backdated to the 1st of July last year.

Rambus said that seven firms - Samsung, NEC, Toshiba, Hitachi, Oki, Elpida and and now Mitsubishi have signed SDRAM and DDR SDRAM license agreements.

The firm said their market share in 1999 amounts to over 40 per cent of the entire DRAM market.

And so the battle spins on. ®

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