What is at stake in the battle over tablet computers?


Samsung Electronics will not promote its new tablet computer at one of the world's largest electronics shows after sales of the product were blocked in Germany in a long-running copyright dispute.

The new Galaxy Tab 7.7 was pulled out of the IFA electronics fair in Berlin.

On Friday a Düsseldorf court granted a request from Apple to ban Samsung from selling the product in Germany.

The two rivals are locked in a global patent war over their smartphone and tablet products, as the BBC's technology correspondent Rory Cellan-Jones explains.

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