A device that connects to a television and an external signal source to deliver video and interactive services. Traditionally, STBs were associated with cable or satellite TV, converting incoming signals into content that could be displayed on a television. Over time, the term has broadened to include internet-enabled streaming devices and IPTV boxes.
An STB serves as a bridge between the content provider and the viewer. Its main functions include signal decoding, channel selection, and, in many cases, digital rights management. Modern STBs often go beyond television, offering features such as video-on-demand, personal video recording (PVR), and access to online apps.
Types of STBs
- Cable and Satellite STBs: Devices provided by TV service operators to decode broadcast signals.
- IPTV and Streaming STBs: Internet-connected boxes such as Apple TV, Roku, and Amazon Fire TV that deliver streaming video content.
- Hybrid STBs: Units that combine traditional broadcast reception with internet-based services.
While smart TVs can handle many of the functions once exclusive to STBs, millions of households still rely on them for live broadcasts, subscription channels, and advanced features like PVR or integrated streaming. STBs remain central to pay-TV ecosystems and continue to evolve as entertainment shifts toward digital and on-demand formats.