Television sets have been the focal point of the home entertainment universe for decades upon decades. They are capable of receiving broadcast signals from both wired and wireless TV stations, and displaying audio and video signals transmitted by external devices (such as STBs and DVDs) via a range of different analog and digital interfaces. In 2007, the first generation of networked smart TVs came into being, representing an innovative new paradigm for TV products. Smart TVs run a vast range of apps, and enable consumers to view live and on-demand video directly from the Internet. They have made TV content viewing an active process, which represents a major departure from the passively-received nature of traditional TV content. Smart TVs also support signal reception (wireless and wired), as well as a myriad of digital/analog interfaces, network interfaces (wireless and wired), audio/video signal processing methods, and image displays. Smart TVs have occupied as a similar role in entertainment and media as smartphones have in communications, serving as information and entertainment centers, smart home control hubs, and mediums for human-machine interaction. During its evolution, the smart TV industry has faced the following challenges: