CN207382476U - One kind supports cable TV signal and ISDB-T dual mode systems based on set-top box - Google Patents
One kind supports cable TV signal and ISDB-T dual mode systems based on set-top box Download PDFInfo
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- CN207382476U CN207382476U CN201721238015.7U CN201721238015U CN207382476U CN 207382476 U CN207382476 U CN 207382476U CN 201721238015 U CN201721238015 U CN 201721238015U CN 207382476 U CN207382476 U CN 207382476U
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Abstract
Cable TV signal and ISDB T dual mode systems are supported based on set-top box the utility model is related to one kind, including：First via tuner, for receiving cable TV signal；Second road tuner, for receiving ISDB T signals；Second road demodulation chip is demodulated for the intermediate-freuqncy signal to the second road tuner output；Central processing unit, the intermediate-freuqncy signal to the first via, the data after the demodulation of the second tunnel are handled respectively.The utility model can meet the needs of user watches cable TV signal (DVB C) program and ISDB T programs simultaneously, and the program of different signal source is presented in same set-top box, and user is made to use more flexibly.
Description
Technical field
The utility model is related to electronic technology fields, and in particular to one kind based on set-top box support cable TV signal and
ISDB-T dual mode systems.
Background technology
With the popularization and popularization of Digital Radio TV set-top box, the demand of user, which not only rests on, watches clearly TV
Program, the program of heterogeneous networks, such as cable TV signal (DVB-C), ISDB-T etc. can be received simultaneously by further including set-top box.
Most set-top box only supports that a kind of signal source single channel inputs or a kind of signal source multichannel inputs at present.One family
Cable TV signal (DVB-C) program is watched if necessary in front yard, it is also desirable to watch ISDB-T programs, then can only buy two respectively
Platform set-top box.Financial cost is high, and using upper dumb.
Utility model content
The purpose of this utility model be for deficiency of the prior art, provide a kind of support cable TV signal and
The set-top-box system of ISDB-T so that the program of different signal source can be presented in same set-top box.
To achieve the above object, the utility model discloses following technical solutions：
A kind of set-top-box system for supporting cable TV signal and ISDB-T, including：
First via tuner, for receiving cable TV signal；
Second road tuner, for receiving ISDB-T signals；
Second road demodulation chip is demodulated for the intermediate-freuqncy signal to the second road tuner output；
Central processing unit, the intermediate-freuqncy signal to the first via, the data after the demodulation of the second tunnel are handled respectively；Central processing
Include demultiplexing module in device, demultiplexing module connects respectively with audio decoder, the first Video Decoder, the second Video Decoder
It connecing, the audio PES that the audio decoder receives demultiplexing module output flows and carries out audio decoder, and is output on TV,
The video PES that first Video Decoder and the second Video Decoder receive demultiplexing module output flows and carries out video solution
Code, and be output on TV.
Further, mobile hard disk is additionally provided with, is connected by USB interface with central processing unit, for accessing the section recorded
Mesh number evidence.
Further, the demultiplexing module includes the first demultiplexing, the second demultiplexing, the 3rd demultiplexing, and first demultiplexes
The audio and video and PES, Section, TS data watched with processing user, the audio and video of the second demultiplexing process picture-in-picture
And PES, Section, TS data, the 3rd demultiplexing process are burnt to audio and video and PES, Section, TS number in mobile hard disk
According to.
A kind of processing method for the set-top-box system for supporting cable TV signal and ISDB-T, includes the following steps：
Which when program is watched in set-top box startup, according to the program source for currently needing to watch, determine TS being mounted to
In first demultiplexing, while frequency locking action is carried out to the demodulation chip where that all the way TS and tuner, radiofrequency signal passes through at this time
Tuner is converted into intermediate-freuqncy signal, and it is identifiable to be converted into demultiplexing module inside central processing unit using demodulation chip
Then mpeg 2 transport stream TS sets the TS to be mounted in the first demultiplexing, and pass through and export PES data, into decoder into
Row audio decoder and video decoding；
When the pneumatic picture-in-picture of set-top box, according to the program source for currently needing to watch, determine which TS is mounted to
In two demultiplexings, while frequency locking action is carried out to the demodulation chip where that all the way TS and tuner, radiofrequency signal is through height at this time
Frequency head is converted into intermediate-freuqncy signal, and the identifiable MPEG-2 of demultiplexing module inside central processing unit is converted into using demodulation chip
Then transport stream TS sets the TS to be mounted in the second demultiplexing, and pass through and export PES data, is sent into decoder and carries out video
Decoding；
When set-top box starts imprinting, according to the program source of current imprinting, determine which TS is mounted to the 3rd demultiplexes
Frequency locking action is carried out in, while to the demodulation chip where that all the way TS and tuner, radiofrequency signal turns through tuner at this time
It changes intermediate-freuqncy signal into, the identifiable mpeg 2 transport stream of demultiplexing module inside central processing unit is converted into demodulated chip
Then TS sets the TS to be mounted in the 3rd demultiplexing, and passes through and export PES data, be saved in mobile hard disk.
A kind of set-top-box system and method for supporting cable TV signal and ISDB-T disclosed in the utility model, have with
Lower advantageous effect：
1. the system can receive cable TV signal and ISDB-T signals simultaneously
2. big picture watch wherein signal program all the way when, can simultaneously picture-in-picture form preview another way letter
Number program, and can flexibly carry out the mutual switching of big picture and picture-in-picture program.
3. can be when signal program all the way be watched, the program of backstage imprinting another way signal, so that user reviews.
Description of the drawings
Fig. 1 is the structure diagram of the utility model,
Fig. 2 is the internal structure block diagram of central processing unit,
Fig. 3 is demultiplexing module internal structure block diagram.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to
The scope of the utility model protection.
The core of the utility model is to provide a kind of set-top-box system for supporting cable TV signal and ISDB-T so that no
Program with signal source can be presented in same set-top box.
Fig. 1-3 are referred to, in figure：
IF (Intermediate Frequency) represents intermediate frequency；
TS represents digital data transmission stream；
ES (Elementary Streams) represents primary flow.
A kind of set-top-box system for supporting cable TV signal and ISDB-T disclosed in the utility model, including：
First via tuner, for receiving cable TV signal；
Second road tuner, for receiving ISDB-T signals；
Second road demodulation chip is demodulated for the intermediate-freuqncy signal to the second road tuner output；
Central processing unit, the intermediate-freuqncy signal to the first via, the data after the demodulation of the second tunnel are handled respectively；Central processing
Include demultiplexing module in device, demultiplexing module connects respectively with audio decoder, the first Video Decoder, the second Video Decoder
It connects, the audio PES that the audio decoder receives demultiplexing module output flows and carries out audio decoder, is connect by HDMI or RCA
Mouth is output on TV, and first Video Decoder and the second Video Decoder receive the video PES that demultiplexing module exports
It flows and carries out video decoding, be output to by HDMI or RCA interfaces on TV.
In a kind of embodiment of the utility model, mobile hard disk is additionally provided with, is connected by USB interface and central processing unit
It connects, for accessing recorded program data.
In a kind of embodiment of the utility model, the demultiplexing module includes the first demultiplexing, the second demultiplexing, the
Three demultiplexings, the audio and video and other PES, Section, TS data that the first demultiplexing process user is watching, second demultiplexes
Mobile hard disk middle pitch is burnt to the audio and video and other PES, Section, TS data, the 3rd demultiplexing process of processing picture-in-picture
Video and other PES, Section, TS data.
A kind of processing method for the set-top-box system for supporting cable TV signal and ISDB-T, bag disclosed in the utility model
Include following steps：
Which when program is watched in set-top box startup, according to the program source for currently needing to watch, determine TS being mounted to
In first demultiplexing, while frequency locking action is carried out to the demodulation chip where that all the way TS and tuner, radiofrequency signal passes through at this time
Tuner is converted into intermediate-freuqncy signal, and it is identifiable to be converted into demultiplexing module inside central processing unit using demodulation chip
Then mpeg 2 transport stream TS sets the TS to be mounted in the first demultiplexing, and pass through and export PES data, into decoder into
Row audio decoder and video decoding；
When the pneumatic picture-in-picture of set-top box, according to the program source for currently needing to watch, determine which TS is mounted to
In two demultiplexings, while frequency locking action is carried out to the demodulation chip where that all the way TS and tuner, radiofrequency signal is through height at this time
Frequency head is converted into intermediate-freuqncy signal, and the identifiable MPEG-2 of demultiplexing module inside central processing unit is converted into using demodulation chip
Then transport stream TS sets the TS to be mounted in the second demultiplexing, and pass through and export PES data, is sent into decoder and carries out video
Decoding；
When set-top box starts imprinting, according to the program source of current imprinting, determine which TS is mounted to the 3rd demultiplexes
Frequency locking action is carried out in, while to the demodulation chip where that all the way TS and tuner, radiofrequency signal turns through tuner at this time
It changes intermediate-freuqncy signal into, the identifiable mpeg 2 transport stream of demultiplexing module inside central processing unit is converted into demodulated chip
Then TS sets the TS to be mounted in the 3rd demultiplexing, and passes through and export PES data, be saved in mobile hard disk.
Compared to the content introduced in background technology, the utility model can meet user simultaneously and watch cable TV signal
(DVB-C) demand of program and ISDB-T programs, and the program of different signal source is presented in same set-top box,
User is made to use more flexibly.
The above is only the preferred embodiment of the utility model, rather than its limitations；It should be pointed out that although with reference to upper
Each embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that, it still can be with
It modifies to the technical solution recorded in the various embodiments described above or which part or all technical characteristic is equally replaced
It changes；And these modifications and replacement, the essence of corresponding technical solution is not made to depart from various embodiments of the utility model technical solution
Scope.
Claims (3)
1. one kind supports cable TV signal and ISDB-T dual mode systems based on set-top box, which is characterized in that including：
First via tuner, for receiving cable TV signal；
Second road tuner, for receiving ISDB-T signals；
Second road demodulation chip is demodulated for the intermediate-freuqncy signal to the second road tuner output；
Central processing unit, the intermediate-freuqncy signal to the first via, the data after the demodulation of the second tunnel are handled respectively；In central processing unit
Including demultiplexing module, demultiplexing module is connected respectively with audio decoder, the first Video Decoder, the second Video Decoder,
The audio PES that the audio decoder receives demultiplexing module output flows and carries out audio decoder, and is output on TV, described
The video PES that first Video Decoder and the second Video Decoder receive demultiplexing module output flows and carries out video decoding, and
It is output on TV.
2. it is according to claim 1 a kind of based on set-top box support cable TV signal and ISDB-T dual mode systems, it is special
Sign is, is additionally provided with mobile hard disk, is connected by USB interface with central processing unit, for accessing recorded program data.
3. it is according to claim 2 a kind of based on set-top box support cable TV signal and ISDB-T dual mode systems, it is special
Sign is that the demultiplexing module includes the first demultiplexing, the second demultiplexing, the 3rd demultiplexing, the first demultiplexing process user
The audio and video and PES, Section, TS data watched, the audio and video and PES of the second demultiplexing process picture-in-picture,
Section, TS data, the 3rd demultiplexing process are burnt to audio and video and PES, Section, TS data in mobile hard disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238015.7U CN207382476U (en) | 2017-09-26 | 2017-09-26 | One kind supports cable TV signal and ISDB-T dual mode systems based on set-top box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238015.7U CN207382476U (en) | 2017-09-26 | 2017-09-26 | One kind supports cable TV signal and ISDB-T dual mode systems based on set-top box |
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| CN207382476U true CN207382476U (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707949A (en) * | 2017-09-26 | 2018-02-16 | 深圳佳力拓科技有限公司 | It is a kind of to support cable TV signal and ISDB T set-top-box system and method |
-
2017
- 2017-09-26 CN CN201721238015.7U patent/CN207382476U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707949A (en) * | 2017-09-26 | 2018-02-16 | 深圳佳力拓科技有限公司 | It is a kind of to support cable TV signal and ISDB T set-top-box system and method |
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