By Gerry Shih SAN FRANCISCO (Reuters) – Veteran technology journalists Walt Mossberg and Kara Swisher have unveiled “Re/code,” a technology news site and conference business to succeed AllThingsD which they founded and built into a premier tech media brand within News Corp. Mossberg and Swisher, who agreed in September to sever a 10-year relationship with News Corp, said on Thursday their new venture will be backed by Comcast’s NBCUniversal and Windsor Media, the investment company headed by former Yahoo! Inc Chief Executive Terry Semel. Mossberg and Swisher will hold majority ownership in the venture, with NBCUniversal and Windsor Media sharing a minority stake.