05/21/2009 05:12 am ET Updated May 25, 2011

TiVo Challenges Nielsen On Local Ratings

TiVo is stepping up its turf battle with ratings-data giant Nielsen, unveiling a product that will capture ratings data for local television markets.

The provider of set-top boxes, which already sells national ratings and research, is set to offer data on TV ratings and viewership at the local level, where Nielsen is the only player.

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