Sigma Designs Introduces HD UWB-over-Coax Home Networking Video Streaming Solution for the Digital Home at NAB 2007.

New hybrid solution enables best quality video streaming for whole home coverage

LAS VEGAS -- Sigma Designs (Nasdaq:SIGM), the leader in digital media processing for consumer electronics, will demonstrate its new UWB-over-Coax home networking video streaming solution at the NAB 2007 conference in Las Vegas from April 16-19, 2007. Available immediately, the Sigma Windeo[R] Mini-PCI Coax/Wireless Development Kit enables a whole home networking and video streaming solution between high definition consumer electronics products over already existing coaxial cables throughout a home. A hybrid solution, it also offers a wireless in-room connection so HD products can be located anywhere in a room for true mobility. Demonstrations of this technology are available at Sigma's private suite (#360) at the Hilton hotel which is connected to the Las Vegas Convention Center.

"Sigma makes it possible for consumers to have the best wired and wireless technologies in their digital homes," said Hung Nguyen, vice president and general manager, Wireless Products Division at Sigma Designs. "We are committed to providing the world's largest consumer electronics companies with the most reliable hybrid solutions to stream the best quality of video between high definition products like HDTVs, DVD players, and IPTV set-boxes located anywhere in the home."

Sigma's UWB-over-Coax solutions are powered by the Sigma's Windeo[R] chipsets and allow multiple HD video streaming contents with 1080p resolution format to be distributed to multiple rooms over a coaxial cable network. Sigma's technologies also enable the video content to travel up to 100 meters (approx. 328 ft.) over the IP multicast protocol. For wireless video streaming in the same room, the Windeo[R] chipset transmits multiple HD video contents over-the-air to multiple HDTVs and other high definition products simultaneously.

Today's digital home networking requires communication technology with high bandwidth to distribute multiple high definition contents simultaneously, highest Quality of Service (QoS) , long range capability to cover the whole home, and wireless connectivity to achieve mobility and convenience. UWB technology with hybrid coax/wireless offers a new alternative to other wired and wireless technologies with regards to these requirements. The Windeo[R] chipset is based on the most popular and world-wide WiMedia[R] standard for UWB which operates above 3.1Ghz, hence, it coexists with CATV signaling that is below 1.0Ghz in frequency.

"As many U.S. homes already have existing coaxial cables, Sigma's UWB-over-Coax solution will ultimately offer consumers home installation cost savings, the best home networking video streaming solution, a trusted whole home coaxial backbone connection and wireless connection in each room," commented Nguyen.

Sigma UWB-over-Coax Development Kits

Sigma Designs' Windeo[R] Development boards and the Sigma's Vantage 8634 IP-STB Development Kits are available to help developers create complete broadband home networking and HD video streaming solution for digital home products. In addition, the Windeo[R] Mini-PCI Coax/Wireless Development board is comprised of the WiMedia-based all-CMOS UWB RF chip and Baseband chip.

About Sigma Designs, Inc.

Sigma Designs (Nasdaq: SIGM) specializes in silicon-based media processors and wireless chipsets for IPTV set-top boxes, digital media receivers, high definition DVD players, HDTV, and portable media players. The company's industry-leading media processor architectures feature high definition video, advanced codec support (H.264, VC-1, MPEG-2), and secure media processing in a complete system-on-chip (SOC) solution. Headquartered in Milpitas, Calif., the company also has sales offices in China, Europe, Hong Kong, Japan, Korea and Taiwan. For more information, please visit the company's web site at www.sigmadesigns.com.

Safe Harbor Statement

This press release may contain forward-looking statements, including statements about the projected timing and extent of customer shipments as well as the expected use of Sigma's media processor and wireless chipset products. Actual results could vary from those projected in the forward looking statements as a result of various factors, including worldwide economic conditions, changes in the customer's ability or desire to complete the rollout, consumer reaction to the new products and services being offered, the ability of Sigma to deliver sufficient quantity and quality of MPEG decoder chips, prices for the Sigma chips, alternative offerings by competitors, and the ability of the parties to work together successfully to achieve the rollout.