Microsoft announced today at CTIA that it will be increasing its investments in digital rights management technology or DRM, which ensures digital content is being used properly. No word on how big the investment will be.

Currently, Windows Media technology is powering Verizon Wireless's mobile services, including V CAST Music and V CAST Video. Microsoft's Windows Media technology has also been adopted by handset manufacturers, like Motorola, Nokia and BenQ, and mobile broadcast service providers Modeo, Virgin Mobile and MobiTV.

"We're looking at protecting new forms of digital media on handsets, like games or ringtones. There are also device-to-device scenarios we're looking into, so we can help enhance both the security and portability of content," according to Adam Anderson, Product Manager for Windows Digital Media.