Apple's demand for flash memory is constraining worldwide supply of the component for other technology firms.

A DigiTimes report today explains that Apple has increased the amount of flash it wants from its regular contracted suppliers, including Hynix Semiconductors and Samsung Electronics.

Because both memory suppliers are corralling more of their stock for Apple, other technology companies are facing limited supplies - and the price of flash memory is creeping up as a result.

Apple is understood to be stock-piling flash memory components - as used in the iPhone, iPod shuffle and iPod nano - in preparation for strong sales of its flash-integrating products.