The TVGuide on my SONY tv has this technology. It was part of the package when I bought the tv.
However, since Comcast decided to usurp the cable and hide anything HD, it also removed my ability to use the TVGuide that came with my tv. They are blocking the signal, so the only 'guide' I have for the programming is the channel that shows ONE tv channel at a time - maybe two if I know what might be coming next because just enough of the second program / channel is visible. All this is to force customers to pay additional money to receive HD tv. Problem is, I was able to receive the channels I watch in HD without paying for HD. Now I have a DTA and nothing except a channel changer for a remote. I cannot tell what I am watching, how much time is left, what time of day / night it is, and the Guide button tells me No Listing for ALL the channels.
So why do I mention all this when the topic is ROVI? Because ROVI had a phone number or web address for me to access if I had a problem with my Guide. From the beginning, it referred me to the manufacturer. The PROBLEM is the GD cable company.
If this technology is available and part of the purchase price, then it should function properly ... regardless of HOW the signal gets to the tv.