RealNetworks plans to acquire South Korean mobile entertainment provider WiderThan in a cash deal worth about US$350 million.WiderThan, in Seoul, provides a range of mobile entertainment services, including ringback tones and games. The company\u2019s On Demand Music service offers licensed music for both wired and mobile devices, according to the company\u2019s website.RealNetworks said the acquisition of WiderThan will strengthen its entertainment offerings for operators. In addition, the deal will increase the reach of both companies by combining the strengths of\u00a0the companies in North America with RealNetworks\u2019 business in Europe and WiderThan\u2019s operations in Asia, including South Korea.RealNetworks expects to complete the acquisition during the first quarter of 2007. After the deal goes through, WiderThan will operate as a subsidiary of RealNetworks and the WiderThan brand will be maintained.In July, WiderThan\u2019s U.S. subsidiary was sued by TeleCommunication Systems (TCS) in the U.S. District Court for the Eastern District of Virginia. TCS alleged that WiderThan infringed its patent for a technology that routes inter-carrier messages addressed using only the recipient\u2019s phone number.WiderThan dismissed the allegation and pledged to defend itself against the charges.-Sumner Lemon, IDG News Service (Singapore Bureau)Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.