Testing, testing.

Nielsen ponders methods for DTV research

There's a whole lot of testing going on at Nielsen Media Research as the company, which owns the TV ratings business in the U.S., prepares to measure viewing in the digital age.

The tests, which began last year, are designed to address the myriad of unanswered questions concerning how to measure viewing in an environment where viewers will have access to hundreds of TV signals, including HDTV, multicast channels, interactive components, personal video recorders, over-the-air data streams and video-on-demand.