Set-Top Box

Set-top box, say from broad sense, always connected with television network terminal equipment can be called set-top box. Based on the cable TV network simulation channel supplemented device, analog channels decoder with television, to telephone lines linking together "villa si" Internet set-top box, digital satellite receiving decoder (IRD) comprehensive, digital ground digital set-top boxes and cable television set-top-box can be called a set-top box. In a narrow sense, if only say digital equipment of words, according to standard into digital satellite set-top box (dvb-s), oubiao digital ground set-top box (DVB - T), gb digital ground set-top box (DMB - TH), cable TV digital set-top box (DVB - C). According to the function words, can be divided into one-way portion set-top box, two-way STB, IPTV set-top box.

definition

Digital TV set-top Box (Set Top Box) is one of the information home appliances, it is a kind of can let users in the existing analog TV to watch the digital TV programs, and conduct interactive digital entertainment, education and commercial activities consumption industry electronic products.

Digital video transform Box (English: Set Top Box, the abbreviation STB), generally called set-top Box or machine Box, is a connection of television and external signal equipment. It can be compressed digital signals into TV content, and on the TV show. Signal can come from cable, satellite antenna, broadband network and ground radio. The content of the receiving STB except analogue TV can provide images, sounds, besides, more is able to receive data content, including electronic program guide, Internet web pages, subtitles, etc.

function

Digital set-top box is the basic function of digital TV radio show, receiving both all radio and interactive multimedia application functions, such as:

(1) electronic program guide (EPG). To provide an easy to use and friendly interface, can quickly access to see programs as a way of users can see through the function of one or more of the channel even all channel will broadcast recent television programs;

(2) the high-speed data broadcast. Can offer users of the stock market, ticket information, electronic newspapers, the popular web site, etc. Various kinds of news;

(3) software online upgrade. Software online upgrade were classified as data broadcast one of the application. Data broadcast services by DVB data broadcast standards for the upgrade software radio down, set-top box can identify the software version number, is not the same as in version of the software, and preserved by receiving the software updates exist memory;

(4) Internet access and E-mail. Digital STBS available through built-in cable modems easily realize Internet access functions. Users can through the STB built-in browser online, sending E-mail. Meanwhile set-top box can also provide various interface with PC connected with PC and Internet connection,;

(5) conditional access. Conditional access core is add interference and encryption and digital set-top box should have solution. RNC and decrypt function In short, so far, the digital video around digital set-top boxes, digital information and interactive applications three core functions and developed a full range of value-added services. Specific see the table below:

content

Basic business analogue TV broadcasting, FM radio, simulation paid (add interference) TV

Digital video satellite digital video broadcast (dvb-s);

Terrestrial digital video broadcast (DVB - T);

Cable digital video broadcast (DVB - C);

MMDS digital video broadcasting;

Digital pay (add interference) TV

Digital audio IP phone/fax;

Music (MOD);

Real-time audio karaoke vod (a KOD)

Digital data information demand (IOD);

Data broadcast (BIS);

Stock market securities information broadcast (SIS);

VBI graphic television;

Application download;

Remote database flow;

E-commerce;

Household bank

Interactive multimedia Internet access service (IAS);

Distance education;

Remote medical treatment;

Online shopping;

Online charges;

The electronic advertisement;

Stock market securities service (SES);

The web (sound, video) broadcasting business;

Videophone with TV conference;

Community multi-function services

interface

1, signal input

2, signal loop output

3, RCA

4, YPbPr

5, S - VIDEO

6 and SPDIF

7, USB

Eight, the network interface

9, VGA

10 and RS232

11, SCART

12, HDMI