1. The connection between the set-top box and the TV is usually checked by AV cable or HDMI cable.
2. Connect the signal to the set-top box, usually through network cable or copper wire.
When the technology and business are mature, one or two standards will be determined as IPTV audio and video coding and decoding standards. For extended services, image display formats such as CIF or QCIF and H.26 1 or H.263 video coding and decoding standards should be supported.
Audio coding and decoding standards G.7 1 1 must be supported, and audio coding and decoding standards G.723, G.728 and G.729 can also be adopted. The reason why the multi-choice method is adopted is mainly to consider the patent fees of various audio and video coding and decoding standards, and so on.
Extended data:
Digital CATV set-top box:
The basic principle of digital cable TV set-top box is the same as that of digital satellite set-top box and digital terrestrial set-top box, except that the signal transmission medium is all-wired network or fiber/coaxial hybrid network used in cable TV broadcasting.
However, due to the good transmission quality of cable TV network and the maturity of cable modem technology, this set-top box can realize various interactive applications and is widely valued by the industry. Digital CATV set-top box basically adopts DVB-C (Digital Video Broadcasting) standard.
This set-top box can support almost all broadcast and interactive multimedia applications, such as digital TV broadcast reception, electronic program guide EPG, quasi-video-on-demand (NVOD), pay-per-view (PPV), online software upgrade, data broadcasting, Internet access, e-mail, IP phone and video-on-demand and so on.
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