Has the games console had its day?

With the rise of smart phones and tablet computers, are the days of the games console coming to an end?

It has become a fixture of many living rooms over the last 30 years, and some of the games played on them make more money than a Hollywood blockbuster. But as Sony unveils its plan for a new Playstation, the BBC's technology correspondent Rory Cellan Jones reports on the future of the games console.