CN201910886U

CN201910886U - Set-top box supporting two-way program output

Info

Publication number: CN201910886U
Application number: CN2010206538392U
Authority: CN
Inventors: ***
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2010-12-11
Filing date: 2010-12-11
Publication date: 2011-07-27
Anticipated expiration: 2020-12-11

Abstract

The utility model relates to a set-top box and discloses a set-top box supporting two-way program output. The set-top box has the advantages that two-way different program output is supported simultaneously, less space is occupied, and both the electrical-energy and the user cost are reduced. The key points of the technical scheme can be generalized as that based on a conventional set-top box, a second de-multiplex module, a second video decoding module, a second format decoding module and a second CA card interface are additionally arranged on the set-top box so as to realize the output of the second way program. The output of the two-way program is realized with only one set-top box, so that the set-top box has the advantages of less occupied space, electrical-energy conservation and lower user cost, and is particularly suitable for a family with several televisions.

Description

Support the set-top box of two-way program output

Technical field

The utility model relates to set-top box, relates to a kind of set-top box of supporting the output of two-way program specifically.

Background technology

Set-top box is a kind of equipment that simulation sound, video interface can be provided, and makes common simulation TV function normally receive digital program by it; Set-top box can also provide Ethernet, USB, HDMI interfaces such as (high-definition multimedias) simultaneously, is an energy provides Interactive function for the user device.

As shown in Figure 1, conventional set-top box comprises tuner, demodulation module, demultiplexing module, memory module, processor module, audio/video decoding module, standard decoder module, CA (condition reception) card; Described tuner, demodulation module, demultiplexing module, audio/video decoding module are connected successively with the standard decoder module, described demultiplexing module, audio/video decoding module, standard decoder module, memory module and the equal connection processing device of CA card module.Conventional set-top box has only the output of one road program, and therefore, it can only be applied on the television set.Along with growth in the living standard, there are two television sets in a lot of families, if an other television set also wants to watch digital program, just need repurchase a set-top box.Set-top box is too much, has both taken the interior space, has also increased power consumption, nor enough economical, has increased user cost.

The utility model content

Technical problem to be solved in the utility model is: propose a kind of set-top box of supporting two-way program output, support the program output that two-way is different simultaneously, reduce to take up room, saves energy, reduce user cost.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: support the set-top box of two-way program output, comprise tuner, demodulation module, first demultiplexing module, memory module, processor module, the first audio/video decoding module, the first standard decoder module, a CA card; Described tuner, demodulation module, first demultiplexing module, the first audio/video decoding module are connected successively with the first standard decoder module, described first demultiplexing module, the first audio/video decoding module, the first standard decoder module, memory module and the equal connection processing device of CA card module; This set-top box also comprises: second demultiplexing module, the second audio/video decoding module, the second standard decoder module and the 2nd CA card; Described second demultiplexing module, the second audio/video decoding module, the second standard decoder module connect successively, and equal connection processing device module; Second demultiplexing module connects demodulation module; Described the 2nd CA card connection processing device module.

The described first audio/video decoding module, the second audio/video decoding module are the MPEG-2H.264 decoder.

The described first standard decoder module, the second standard decoder module are the PAL/NTSC decoder.

The beneficial effects of the utility model are: only realize that with a set-top box two-way program exports, reduce indoorly to take up room, saves energy, reduce user cost.

Description of drawings

Fig. 1 is traditional set-top box structured flowchart;

Fig. 2 is the set-top box structured flowchart of the support two-way program output in the utility model.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

Traditional set-top box has only the output of one road program, can only be applied on the television set, if satisfy the needs that two television sets are watched digital program, must buy two set-top box, has both taken the interior space, has also increased power consumption, and economical inadequately; At the problems referred to above, the utility model discloses a kind of set-top box of supporting two-way program output, support the program output that two-way is different simultaneously, reduce to take up room, saves energy, reduce user cost.

As shown in Figure 2, the set-top box of the support two-way program output in the utility model comprises tuner, demodulation module, first demultiplexing module, second demultiplexing module, memory module, processor module, the first audio/video decoding module, the second audio/video decoding module, the first standard decoder module, the second standard decoder module, a CA card, the 2nd CA card; Described tuner, demodulation module, first demultiplexing module, the first audio/video decoding module are connected successively with the first standard decoder module, described second demultiplexing module, the second audio/video decoding module, the second standard decoder module connect successively, and equal connection processing device module; Second demultiplexing module connects demodulation module; Described first demultiplexing module, the first audio/video decoding module, the first standard decoder module, memory module, a CA card, the equal connection processing device of the 2nd CA card module.

On concrete enforcement, the first audio/video decoding module, the second audio/video decoding module all can adopt H.264 decoder of at present popular MPEG-2, are used to decode audio-video signal.The first standard decoder module, the second standard decoder module all can adopt the PAL/NTSC decoder, are used for the standard of TV signal is decoded, and switch between pal mode and TSC-system formula.

Its operation principle is: the tuner module receives programme signal, gives demodulation module and solves multiplexed signals, and multiplexed signals is distributed to the demultiplexing that first demultiplexing module and second demultiplexing module are finished program again.Programme information behind the demultiplexing sends to the first audio/video decoding module respectively and the second audio/video decoding module is carried out unwinding, decoding, audio signal can directly be exported, vision signal then need be delivered to the decoding that the first standard decoder module and the second standard decoder module are finished television system, output video respectively.Processor module then is responsible for demultiplexing, unwinding, the decode procedure of the different programme informations of control two-way.

It should be noted that because cas system has been bought in the commercial city of the broadcasting and TV of prefectures and cities operation at present, to realize encryption control programme content.Cas system makes the user who has passed through to authorize can normally watch program, and undelegated user then can't watch program.Therefore, set-top box of the present utility model has added the intelligent CA card of two covers, can insert CA child and parent card or two common CA smart cards, realizes unwinding, the deciphering of program by two cards.

Claims

1. support the set-top box of two-way program output, comprise tuner, demodulation module, first demultiplexing module, memory module, processor module, the first audio/video decoding module, the first standard decoder module, a CA card; Described tuner, demodulation module, first demultiplexing module, the first audio/video decoding module are connected successively with the first standard decoder module, described first demultiplexing module, the first audio/video decoding module, the first standard decoder module, memory module and the equal connection processing device of CA card module is characterized in that: also comprise second demultiplexing module, the second audio/video decoding module, the second standard decoder module and the 2nd CA card; Described second demultiplexing module, the second audio/video decoding module, the second standard decoder module connect successively, and equal connection processing device module; Second demultiplexing module connects demodulation module; Described the 2nd CA card connection processing device module.

2. the set-top box of support two-way program output as claimed in claim 1, it is characterized in that: the described first audio/video decoding module, the second audio/video decoding module are H.264 decoder of MPEG-2.

3. the set-top box of support two-way program output as claimed in claim 1 or 2, it is characterized in that: the described first standard decoder module, the second standard decoder module are the PAL/NTSC decoder.