More attention was focused on Chairman Kevin Martin's defeat in an attempt to impose stiffer cable-TV regulations at the FCC last week than on what those regulations are. Martin tried to invoke the "70-70" rule, which gives the Federal Communications Commission tighter control when cable companies reach 70 percent of the nation's households and 70 percent of THOSE homes subscribe to cable. Martin said we've reached that point. No we haven't said the industry, loudly complaining. Martin's study showing 70-70 liftoff looked a bit forced, anway, so it's not going to happen.