Sony to raise its online game

Its biggest competitor would be Microsoft's Xbox Live service, which boasts 10 million subscribers who can sample online more than 4,800 hours of video, a quarter of them in high-definition. That includes 350 movies and more than 5,000 episodes of TV shows such as "Desperate Housewives" and "Lost," most of which go on sale on Xbox Live the day after their initial broadcast airing. Unlike closed networks such as Apple's, Sony plans to embrace open standards that would make its offering compatible with a range of computers and hand-held devices, including its PlayStation Portable.

Patrick Seybold, a spokesman for the PlayStation unit, declined to comment.

However, a PlayStation marketing chief acknowledged the initiative and promised more details soon in a post Tuesday on the Inside PlayStation Network blog.

"Many of you have been hearing rumblings about a video service that will allow you to download full-length TV shows and movies via PlayStation Network for North America," wrote Peter Dille, senior vice president of marketing for Sony Computer Entertainment America Inc. "While I don't have any new announcements . . . it's already been confirmed that we'll be offering a video service for PS3 in a way that separates the service from others you've seen or used."

One of the service's greatest obstacles may be Sony's own culture. Sony Chairman and Chief Executive Howard Stringer has been battling a corporate silo mentality in which divisions within his company work in isolation, undermining new initiatives. The PlayStation group in Foster City, Calif., has been notoriously aloof. Once, a former executive said, it scuttled plans for a movie subscription service for the PlayStation Portable even though Sony Pictures had supported the initiative.

What is more, the company, looking to safeguard its film, television and music holdings, has been an aggressive champion of copyright protection, often, critics suggest, at the cost of technological innovation.

"Sony has this blessing and curse of [having] some of the world's smartest intellectual property lawyers, who've never built or marketed a product in their life, who are good at saying, 'no,' " said Richard Doherty, senior analyst at consultancy Envisioneering Group in Seaford, N.Y. "The sun never sets on the Sony lawyers, they're around the world, in Tokyo, London, New York."