Quick Simple method... record to harddisk and use video editing software to cut adverts.

Educational TV may offer advert-less copies of the program.

Complex method. "Smart" TV camera with DSP and IR remote control is pointed at the logo, signal goes through a high pass filter and is correlated with a memory of the logo which is set by pushing a button. The logo disappearing causes the correlation function to drop to near zero, and the DSP sends a pause signal to the recorder until it returns. Much R&D and expense in this and other advert-removing systems, especially since most advert signal cues may be changed at whim by the broadcaster. Good idea to use the logo as a cue though!

Marketing, contact school libraries and offer the service?

Have V-chip ratings apply to advertisers as well as the programmes.

I Love this idea. I hate when I'm watching family style TV shows with my kids, and an ad for viagra or other adult related product appears. The FCC needs to pull their head out and mandate a rating for commercials so parents can use the V-chip feature of their TV to control this crap. The FCC forced all the TV manufacturers to implement the V-chip feature, driving up the cost of TVs, and most people don't even know the feature exists.