Another day, another Comcast story. While the cable giant has been attracting headlines over its controversial net-neutrality stance, it's also quietly trying out new things, one of which is a set-top box that handles both television and internet content.

The Xcalibur box can search live TV, on demand, and recorded material including web material. No, it doesn't offer the same broad selection of web video that you'd get on a PC or other browser-equipped device. But Comcast people say the selection will broaden over time as the device moves from the current testing stage to more widespread use.

The Wall Street Journal describes the interface as "fluid and graphical. A menu displays a strip of images representing recently watched channels and programs, which expand when selected. A redesigned 'guide' displays a cleaner grid of programs by network and airtime so that it's possible to watch TV on part of the screen while browsing."

The Journal also reports that Time Warner Cable is preparing to deliver video over the internet, to net TVs, without cable boxes, "as soon as 2011," according to the company's CEO.

See The Wall Street Journal and news.com.

After this story was originally published, Engadget HD published a picture of the set top box.