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    Set-top box

     Introduction

     

    Set Top Box is a device able to decode the video signal coming from terrestrial, cable, satellite or Internet, transform the signal format into the form which could be accepted by traditional analog TV or modern high quality digital TV so users are able to watch the high resolution video programs from broadcast system. The digital TV program is now broadcasting in every country, but not all TVs lies in every user’s living room is able to decode them. STB is becoming a practical product for users to upgrade their TV system to receive the TV programs broadcasted and digitalized without the need of TV replacement.
     
    In order to success the experiences user was used to in using analog TV such as real time program delivery, custom program on-demand and subscriber interactive, STB system integrated CPU and lots of peripherals, for example, memories, decoders, high quality video players, HDD, CDs,..etc. They all need a complex OS system and Middle-ware to manage them, building a friendly user interface for TV watching experiences.

     

     Standard

     

    ••DVB-S/S2/S2X, DVB-C/C2, DVB-T/T2, ISDB-T
    •Video: MPEG2/MPEG4,H.265/HEVC,H.264/AVC
    •Audio:AC3/AC3+,AAC,DTS,MPEG3

     

     Application

     

    1. Cable STB
    The cable STB mainly used to receive the signals from cable TV system, it’s able to provide reliable quality video, video on demand (VOD), multiple channels, high transmission rate,interactive TV and PVR functions. It’s high shipping amounts only Satellite STB can step over in North America.
     
    2. Satellite STB
    Satellite STB was the earliest digitalized technology companied with more mature industry. It’s the number one shipping amounts in all STB applications. Majorly used to receive direct broadcast satellite (DBS) signals, be able to provide services of interactive paid TV such as Pay-Per-View(PPV), TV internet, Movie, PVR,
    Email, Gaming and SMS,…etc, cost higher, but wider service ranges
     
    3. Terrestrial STB
    Terrestrial STB can be classified as two levels: lower end and higher end products. The lower end STB provides basic digital and analog signals transforming for basic STB functions. The higher level products can also provide internet access, video recording and storages. It’s popular and mainly used in Europe with lower installation cost, provides user free TV service in the city with high populations. Terrestrial STB will become the main stream as the modules integrated into Digital TV side in near future.
     
    4. IP/OTT STB
    STB receives the video signal from internet is getting popular in recent years, it’s able to provide complete interactive service with reliable transmission quality by leverage the ADSL, VDSL ,PON or LTE broadband communications. It will bring high growth for STB market while the video format with higher compression ratio technology was integrated in the future.
     
     Architecure