Sony has reported a 33.5% jump in quarterly profit as sales improved in its PlayStation 4 video game business.

Tokyo-based Sony kept its full-year profit projection unchanged at 140 billion yen (£808 million), which would be a reversal from red ink in the previous fiscal year.

Sony recorded a 120 billion yen (£693 million) October-December profit. Sales for the fiscal third quarter edged up 0.5% to 2.58 trillion yen (£14.9 billion).

Sony, which also makes Bravia TVs and Xperia mobile phones, has been undergoing a marathon restructuring to focus on more profitable operations.

Sony's sales were still struggling in image sensors and mobile communications. But it got a lift from better sales of PS4 game software as well as the machines.

The Japanese electronics and entertainment conglomerate, which also has a music division, benefited from the strong performances of the films Spectre and Hotel Transylvania 2.

Sales in its music business improved with the release of Adele's new album 25. One Direction's Made In The A.M. was also a strong seller.

The results appear to show that Sony is gradually getting its restructuring under control, after selling some assets, such as its Vaio personal computer business and its stake in Japanese game maker Square Enix.

But its once strong brand image has lost much of its lustre in the face of competition from Apple in digital music players and smartphones as well as Samsung in TVs.