According to the latest figures from Nielsen, U.S. DVR household penetration has reached 25 percent, up 5 percent from nine months ago, mostly because cable and satellite operators try aggressively to persuade customers to switch to the digital devices, Media Post reported.

The data also shows that U.S. households may be increasingly preparing for the coming of uninterrupted TV service during next year's digital transition.

DVR users seem quite passionate about the hardware. Of the estimated 28 million homes with DVRs, about 30 percent have the devices hooked up to more than one TV set.

In addition, data shows that 53 percent of DVR households are cable subscribers, with 40 percent using DBS.

In terms of the number of homes that were not ready for the 2009 digital switch, Nielsen found in January that 10.2 percent of U.S. homes said they are not, while in May it dropped slightly to 9.4 percent, Media Post reported.

The figure is even higher in Hispanic households. In January, 17.4 percent were unprepared, in May it fell to 15.5 percent.

The cable industry has run some ad campaigns alerting consumers of the upcoming switchover, which could be expected to increase in the coming months, according to Media Post.

A new survey conducted by the Leichtman Research Group in June showed that 84 percent of U.S. adults have heard of the digital transition, more than double than six months ago. However, there are about 30 percent of those without cable or satellite service (or telco TV) who believe the transition will not impact their TVs.