Sigma Designs Inc. was a prominent fabless semiconductor company specializing in media processing and connectivity solutions. Founded in 1982 and headquartered in Fremont, California, the company initially focused on graphics and video technologies before expanding into system-on-chip (SoC) designs for set-top boxes, smart TVs, and Internet of Things (IoT) devices. Sigma Designs was known for its expertise in decoding and processing high-definition video, as well as its contributions to standards like Zigbee for smart home applications. Key products included advanced media processors and Z-Wave wireless chips for home automation. The company was acquired by Silicon Labs in 2018, integrating its IoT assets to enhance smart home connectivity offerings.