CES 2013: Nvidia unveils Project Shield gaming console

Nvidia has announced plans to produce its own hand-held video-games console.

Project Shield is Android-based and marries a 5in (12.7cm) touch-screen with joysticks, buttons and other controls, in a clam-shell design.

It is also designed to link to PCs offering access to more powerful games such as those on the Steam library.

The announcement was a surprise, as the US company has previously focused on selling chips and graphics cards to other manufacturers.

Intel, another chip manufacturer, is also reportedly working on its own device - a television set-top box.