LSI Files U.S. Patent Complaint Against MediaTek, Funai, Realtek

LSI Corp. (LSI), a maker of chips used in computer disk drives, filed a complaint with a U.S. trade agency against Funai Electric Co., MediaTek Inc. (2454) and Realtek Semiconductor Corp. (2379) over technology used in audiovisual devices.

LSI, based in Milpitas, California, said in its complaint with the International Trade Commission that the companies infringed four of its patents. It asked the agency to open an investigation. The Washington-based commission has the power to halt imports of products that violate U.S. patents.

LSI said products using its patented technology without authorization include certain digital televisions, home theater systems and DVD players. The company asked the agency to block imports of products containing the infringed technology.

Funai is an Osaka, Japan-based maker of audiovisual equipment; Mediatek is a Hsinchu, Taiwan-based maker of semiconductors; and Realtek is a Hsinchu-based designer and distributor of integrated circuits.

The case is In the Matter of Certain Audiovisual Components and Products Containing the Same, Complaint No. 2884, U.S. International Trade Commission (Washington).

To contact the reporter on this story: Michael Shepard in Washington at

To contact the editor responsible for this story: Bernard Kohn at

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