Oceanic Time Warner Cable, the state's largest cable television system, said it's added four premium HD channels to its offerings, bringing to 42 the number of HD channels available.

The company said the new channels will be available on O'ahu and Kaua'i and include the Hallmark Movie Channel HD, Fox Business HD, Big Ten HD and the Travel Channel HD.

Oceanic said it now has about 80,000 HD subscribers, or about one-fifth of the more than 400,000 subscribers it serves.