TechTV was a 24-hour cable and satellite channel based in San Francisco, California featuring news and shows about computers, technology, and the Internet. It originally was called ZDTV by its founder, Ziff-Davis, when it debuted on May 11, 1998. It later was owned by Paul Allen's Vulcan Ventures. Vulcan Ventures sold TechTV to G4 Media (owned primarily by Comcast), which merged it with the video game channel G4 in May 2004 to form G4techTV. In February 2005, the name was changed back to G4, eliminating TechTV from the name completely.