Sony Corporation has announced it is to sell its microchip production facilities in western Japan to Toshiba for 90 billion yen ($835 million).

Sony, which is re-focusing its core businesses to concentrate on image sensor chips for digital cameras, said in October it would sell production facilities for making key microchips used in the PS3 to Toshiba, but previously the price has been unavailable.

The announcement on the selling price follows Toshiba’s decision on Tuesday to abandon its HD DVD high-definition DVD format, ending a prolonged battle with the Sony-led Blu-ray camp.

The sale is expected to conclude on April 1.

Toshiba twinned the HD DVD exit with an announcement that it and partner SanDisk would spend $16 billion on two new flash memory plants.