News Corporation chairman Rupert Murdoch says Google and Microsoft's access to his newspapers could be limited to a 'headline or a sentence or two' once he erects a pay wall around his titles' websites.

Murdoch, in an interview with journalist Marvin Kalb for The Kalb Report, also said he believed most US newspapers would eventually end up charging readers online.

Murdoch currently does so with The Wall Street Journal and plans to extend this to his other titles, beginning with The Times.

'We're going to stop people like Google and Microsoft and whoever from taking our stories for nothing,' the News Corp chief said.

Search advertising had produced a 'river of gold' for Google, he said. 'But those words are being taken mostly from the newspapers,' he added.

Murdoch said he did not expect search engines would pay for access to newspapers. 'We'll be very happy if they just publish our headline or a sentence or two and that's followed by a subscription form,' he said.

Murdoch dismissed concerns that readers used to getting news on the internet for free would be reluctant to pay. 'I think when they've got nowhere else to go they'll start paying,' he said.

Murdoch also praised the Apple iPad, calling the newly released tablet computer a 'glimpse of the future', which could save newspapers.