(TheStreet.com) — Sony Corp., maker of the PlayStation 3, stayed in the red last business year but predicts a return to profit as restructuring and an aggressive 3-D rollout bear fruit.The Tokyo-based company Thursday reported progress toward profitability, booking a 40.8 billion yen ($439 million) loss for the year ended March 31. That’s an improvement from the previous year’s 98.9 billion yen loss, which was Sony’s first annual red ink in 14 years.

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