Rosum Corporation, a developer of location technologies based on TV signal, announced today that it has raised $15 million in new financing. Existing investors Charles River Ventures, Allegis Capital, Steamboat Ventures and KTB Ventures, and new investor TruePosition, Inc., a subsidiary of Liberty Media Corporation, participated in this round of financing.

This is the second round of financing for Rosum which already secured US$ 16 million Series A preferred stock financing in 2003.

Skip Speaks, Rosum CEO, said, "This new financing will enable us to accelerate our expansion into the mobile TV and femtocell markets and to capture emerging global opportunities for our solution. We are grateful for the ongoing support from our current investors and we are excited to add TruePosition, a market leader in the field of location technology, as a strategic investor."

Stephen Stuut, TruePosition CEO, added, "Rosum's TV-positioning solution is well-aligned with our vision of delivering always-available location-based services, indoors and out, with the best technology available. We are pleased to join the Rosum Board of Directors."

Rosum's TV-positioning technology is a software-only solution which uses unmodified broadcast TV signals to deliver location and timing solutions. Rosum calculates the location of a TV receiver based on the time of flight of the signal from the TV towers to the receiver. The handheld device needs connectivity because the location is calculated on a Rosum remote server. This technology is well suited for determining position where GPS is not working, particularly indoor.

Last October Rosum signed a licensing and joint development agreement with Intel Corporation to enable indoor/outdoor TV-location detection capability for mobile devices.