Carlsbad, Calif. - NTN Buzztime, a provider of interactive TV trivia games found in bars and restaurants, announced on Friday that it has sold its NTN Wireless Communications unit to HM Electronics. The company expects to see $2 million in proceeds from the deal. The unit, which provides wireless solutions to improve efficiency and customer service, generated $6.1 million in revenue in 2006. Carlsbad, Calif.-based NTN said the sale is in line with its plan to narrow the scope of its business to its core entertainment division.