Hollywood movie mogul Steven Spielberg has invented technology he calls "the future of cinema" - and he promises the new film experience will suck audiences into the heart of the action.

The Saving Private Ryan director is working on advanced screening technology, but insists he is looking to build on the things that made cinema great in the past, rather than altering it forever.

He tells the Hollywood Reporter, "A good movie will bring you inside of itself just by the sheer brilliance of the director/writer/production staff.

"But in the future, you will physically be inside the experience, which will surround you top, bottom, on all sides.

"I've invented it, but because patent is pending, I can't discuss it right now."