Microsoft has unveiled the latest version of its copyright protection software that will allow users to play rented content on portable devices, such as mobile phones, and networked devices within the home.
The new version of Microsoft's Windows Media software contains DRM (Digital Rights Management) technology, which is designed to protect, deliver and play subscription-based digital music and video content on a wide range portable devices, including those in homes connected via wireless networks.
The technology gives content purchased through subscription services a digital expiry date, even when the data is transferred from a PC. Users can rent a song or video, download the content onto a portable player and play it back until the rental expires, for example.
Several well-known content providers have already agreed to use the technology, including Time Warner's American Online, Walt Disney and Roxio's Napster.
Microsoft hoped to counter the growing popularity of Apple Computer's iTunes online music shop, which distributes music using its own copyright protection format.
The Windows Media DRM technology will only work on devices specifically designed to support it. Porting kits offering ANSI C code and other tools for integrating DRM functionality into portable devices are available to chip and device manufacturers, according to Microsoft.
Its Windows Media Rights Manager Software Development Kit offers support for adding DRM functionality to PCs, it said.
John Blau writes for IDG News Service