A Court TV analysis of Nielsen data, released at the National Cable Television Association conference in Dallas, contradicts CNN claims that it is the dominant purveyor of live O.J. Simpson trial coverage. The analysis, covering ratings from Jan. 23 to April 18 for the noon to 8 p.m. [ET] slot, found Court TV has a greater share of viewing than CNN in homes that receive both channels and that the disparity is growing. CNN did not refute the Court claim, but noted that for the period CNN, (which is in more than 62 million homes), has averaged an audience of 3.1 million TV homes for its O.J. Simpson coverage vs. an average of 640,000 homes for Court TV, which is available in only 21 million homes.