CN207638801U - It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously - Google Patents
It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously Download PDFInfo
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- CN207638801U CN207638801U CN201721902283.4U CN201721902283U CN207638801U CN 207638801 U CN207638801 U CN 207638801U CN 201721902283 U CN201721902283 U CN 201721902283U CN 207638801 U CN207638801 U CN 207638801U
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Abstract
DVB C and DTMB simple two-way signal set-top boxes, including master chip being received simultaneously the utility model is related to a kind of, is responsible for processing and calculates the work of data and control system peripheral components；Tuner is responsible for tuning broadcast television signal；Demodulator is responsible for demodulated signal；Memory is responsible for storage program audio, video data.The utility model can play the program in DVB C and DTMB signal sources simultaneously on same TV, and can flexibly switch the program in unlike signal, reduce economic cost, enhance the convenience used and practicability.
Description
Technical field
The utility model is related to TV set-top box technical fields, and in particular to a kind of to receive DVB-C and DTMB two-ways simultaneously
Signal set-top box.
Background technology
With the fast development of Digital HDTV STB, demand of the people to set-top box is not only rested on and can only be propped up
The set-top box for holding DVB-C (digital video broadcast for cable) signals or other broadcast television signal single channel or multichannel input, is also wrapped
The set-top box of two or more unlike signals can be received simultaneously by including, for example can be handled DVB-C signals simultaneously but also be handled DTMB
(Digital Television Terrestrial Multimedia Broadcasting, digital TV ground broadcasting transmission
System frame structure, Channel Coding and Modulation) signal.Because the set-top box that can handle DVB-C and DTMB signals simultaneously can be
It is worked normally on DVB-C and DTMB digital television broadcasting systems, effective solution can not be same in DTV STB
When play DVB-C and DTMB programs the problem of.
Present DTV STB generally only supports single channel input or the multichannel input of a certain signal source, such as
DVB-C, DTMB, DVB-T (Digital Terrestrial Television Broadcast), DVB-S (digital satellite television broadcast) etc..Such set-top box without
Method plays the program in DTMB and DVB-C broadcast singals simultaneously, and limitation is very big, and flexibility is not also strong.
Existing DTV STB can only play the program in a kind of broadcast singal.Such set-top box can meet substantially
Public demand, but also have its limitation in this way.Because not only there is wired television broadcasting signal in certain families, simultaneously
Be also likely to be present DTMB broadcast television signals, and they want to see DVB-C programs, while wanting to see the program of DTMB again, at this time he
Can only open two set-top boxes respectively to watch the program to induction signal, significantly increase economic cost in this way, and make
With inconvenience.
Utility model content
The purpose of this utility model is to be directed to deficiency in the prior art, provides a kind of while receiving DVB-C and DTMB is bis-
The program of DTMB and DVB-C signals is realized while being played to road signal set-top box and method, is used with reducing economic cost and enhancing
Convenience and practicability.
To achieve the above object, the utility model discloses following technical solutions：
It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously, including：
Master chip is responsible for processing and calculates the work of data and control system peripheral components, and master chip is internally integrated
Demultiplexing module, audio decoder and Video Decoder, wherein demultiplexing module is responsible for mpeg 2 transport stream to demultiplex into
ES；Audio decoder is responsible for digital audio signal coding being analog audio signal；Video Decoder is responsible for digital video number
According to the TV signal for being encoded into simulation；
Tuner, including first via tuner and No. second tuner, first via tuner are responsible for what processing received
DVB-C signals switch to DVB-C signals the intermediate-freuqncy signal of needs after frequency-selecting, amplification, frequency-conversion processing；No. second tuner
It is responsible to handle the DTMB signals received, after frequency-selecting, amplification, frequency-conversion processing, DTMB signals are switched to useful intermediate frequency and are believed
Number；
Demodulator, including first via demodulator and No. second demodulator, first via demodulator are responsible for first via tuner
The intermediate-freuqncy signal of output demodulates the transport stream TS of MPEG-2；No. second demodulator is responsible in the tuner output of processing No. second
The transport stream TS for the MPEG-2 that frequency demodulated signal goes out；
Memory is responsible for storage program audio, video data.
One kind above-mentioned receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, and demultiplexing module is demultiplexing mould
First via demodulator is exported TS data by the way that wherein demultiplexing channel demultiplexes all the way by block and built-in descrambling module, demultiplexing module
With for ES data, the ES data descrambled are descrambled by descrambling module；The TS data of No. second demodulator output pass through it
In demultiplex channel all the way and obtain ES data.
One kind above-mentioned receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, and the ES data descrambled include video ES,
Audio ES and data ES.
One kind above-mentioned receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, and Video Decoder passes through HDMI or RCA
Interface is sent into vision signal in TV and is played.
One kind above-mentioned receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, and audio decoder passes through HDMI or RCA
Interface is sent into audio data on TV and is played.
One kind above-mentioned receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, and memory is mobile hard disk or USB flash disk, is led to
It crosses USB interface and the PES data that demultiplexing module exports is saved in mobile hard disk or USB flash disk.
Method that is a kind of while receiving DVB-C and DTMB simple two-way signals is also disclosed in the utility model, includes the following steps：
Frequency point and signal type, then determine to demultiplex all the way using certain where the program selected according to user extracts the program
Unbinded the tuner and demodulator of the tuner and demodulator or DTMB of DVB-C with module, and then master chip is connect by I2C
Mouth control tuner and demodulator start the processing of data, and processed data are sent at the demultiplexing module of built-in chip type
Reason, master chip selection and the matched ES data of actual program, decode after being finally sent into audio decoder and Video Decoder, are arranged
The size and location of broadcast window is sent into data in TV eventually by HDMI RCA interfaces and is played；
When user starts to play the program in another signal by user interface selection, master chip can select to control
Other demultiplexing channels bindings in addition tuner and demodulators all the way, and control tuner and demodulator starts locked frequency point and place
Data are managed, after master chip gets the ES data of the program, is equally also required to send and is converted to TV in Video Decoder and can identify
Analog signal, then set-top box play the second road video by the way that the size and location of broadcast window is arranged.
One kind disclosed by the utility model receives DVB-C and DTMB simple two-way signals set-top box and method simultaneously, has following
Advantageous effect：
The utility model can play program in DVB-C and DTMB signal sources simultaneously on same TV, and can be with
The flexibly program in switching unlike signal, reduces economic cost, enhances the convenience used and practicability.
Description of the drawings
Fig. 1 is the utility model flow chart,
Fig. 2 is the structure diagram of the utility model,
Fig. 3 is signal transmission schematic diagram.
Specific implementation mode
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 a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
The core of the utility model is to provide a kind of while receiving DVB-C and DTMB simple two-way signals set-top box and method, real
The program for now playing DTMB and DVB-C signals simultaneously, to reduce economic cost and enhance the convenience used and practicability.
Refer to Fig. 1-Fig. 3.
In Fig. 2, Fig. 3, one kind disclosed by the utility model receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, including：
Master chip is responsible for processing and calculates the work of data and control system peripheral components, and master chip is internally integrated
Demultiplexing module, audio decoder and Video Decoder, wherein demultiplexing module is responsible for mpeg 2 transport stream to demultiplex into
ES；Audio decoder is responsible for digital audio signal coding being analog audio signal；Video Decoder is responsible for digital video number
According to the TV signal for being encoded into simulation；
Tuner is responsible for tuning broadcast television signal, including first via tuner and No. second tuner, first via tuning
Device is responsible for the DVB-C signals that processing receives, and after frequency-selecting, amplification, frequency-conversion processing, DVB-C signals are switched in needing
Frequency signal；No. second tuner is responsible for the DTMB signals that processing receives and DTMB is believed after frequency-selecting, amplification, frequency-conversion processing
Number switch to useful intermediate-freuqncy signal；
Demodulator is responsible for demodulated signal, including first via demodulator and No. second demodulator, first via demodulator are responsible for handle
The intermediate-freuqncy signal of first via tuner output demodulates the transport stream TS of MPEG-2；No. second demodulator is responsible for handling the second road tune
The transport stream TS for the MPEG-2 that the intermediate-freuqncy signal of humorous device output demodulates；
Memory is responsible for storage program audio, video data, so that user reviews program.
In a kind of embodiment of the utility model, demultiplexing module is demultiplexing module simultaneously built-in descrambling module,
First via demodulator is exported TS data by the way that wherein demultiplexing channel is demultiplexing as ES data all the way, by solution by demultiplexing module
It disturbs module and descrambles the ES data descrambled；The TS data of No. second demodulator output are by wherein demultiplexing channel obtains all the way
To ES data.
In a kind of embodiment of the utility model, the ES data descrambled include video ES, audio ES and data ES.
In a kind of embodiment of the utility model, Video Decoder send vision signal by HDMI RCA interfaces
Enter in TV and plays.
In a kind of embodiment of the utility model, audio decoder send audio data by HDMI RCA interfaces
Enter and is played on TV.
In a kind of embodiment of the utility model, memory is mobile hard disk or USB flash disk, by USB interface demultiplexing
The PES data of module output are saved in mobile hard disk or USB flash disk.
See Fig. 1, the disclosed by the utility model a kind of while method that receives DVB-C and DTMB simple two-way signals, including it is as follows
Step：
Frequency point and signal type, then determine to demultiplex all the way using certain where the program selected according to user extracts the program
Unbinded the tuner and demodulator of the tuner and demodulator or DTMB of DVB-C with module, and then master chip is connect by I2C
Mouth (the two-wire serial bus interface proposed by PHILIPS Co. is transmitted for the device in bus into row information) control tuner
Start the processing of data with demodulator, and processed data is sent into the demultiplexing module processing of built-in chip type, master chip choosing
Select with the matched ES data of actual program, decoded after being finally sent into audio decoder and Video Decoder, broadcast window be set
Size and location is sent into data in TV eventually by HDMI RCA interfaces and is played；The section of signal all the way is realized at this time
Mesh plays, and flexibly selection plays some program in broadcast singal.
When user starts to play the program in another signal by user interface selection, master chip can select to control
Other demultiplexing channels bindings in addition tuner and demodulators all the way, and control tuner and demodulator starts locked frequency point and place
Data are managed, after master chip gets the ES data of the program, is equally also required to send and is converted to TV in Video Decoder and can identify
Analog signal, then set-top box play the second road video by the way that the size and location of broadcast window is arranged.At this point, realizing
First via video and the second road video are played simultaneously, and the two programs are the programs in different broadcast singals.
When user by user interface open imprinting current interface when, set-top box recognize actual program be DVBC programs also
It is DTMB programs, then selects the not used channel of demultiplexing to be all the way tied on the tuner and demodulator of the signal, demultiplex
With the TS data for the MPEG-2 that will get actual program, PES data are obtained after demultiplexing, then pass through USB interface
It writes the data in mobile hard disk or USB flash disk.
When user's selection plays the complete video of imprinting from USB flash disk or mobile hard disk, set-top box will be from the mobile device
In the ES data of the program are sent into audio/video decoder by USB interface, then by HDMI and RCA interfaces, after decoding
Data are sent into TV and are played.Program function is reviewed in realization.
The above is only the preferred embodiment of the utility model, rather than its limitations；Although should be pointed out that 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 features is equally replaced
It changes；And these modifications and replacement, so that the essence of corresponding technical solution is detached from various embodiments of the utility model technical solution
Range.
Claims (6)
1. a kind of receiving DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that including：
Master chip is responsible for processing and calculates the work of data and control system peripheral components, and master chip, which has been internally integrated, to be demultiplexed
With module, audio decoder and Video Decoder, wherein demultiplexing module is responsible for mpeg 2 transport stream to demultiplex into ES；Sound
Frequency decoder is responsible for digital audio signal coding being analog audio signal；Video Decoder is responsible for encoded digital video data
At the TV signal of simulation；
Tuner, including first via tuner and No. second tuner, first via tuner are responsible for the DVB-C letters that processing receives
Number, after frequency-selecting, amplification, frequency-conversion processing, DVB-C signals are switched to the intermediate-freuqncy signal of needs；No. second tuner is responsible for place
It manages the DTMB signals received and DTMB signals is switched to useful intermediate-freuqncy signal after frequency-selecting, amplification, frequency-conversion processing；
Demodulator, including first via demodulator and No. second demodulator, first via demodulator are responsible for first via tuner to export
Intermediate-freuqncy signal demodulate the transport stream TS of MPEG-2；No. second demodulator is responsible for the intermediate frequency letter of processing No. second tuner output
The transport stream TS of number MPEG-2 demodulated；
Memory is responsible for storage program audio, video data.
2. one kind according to claim 1 receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that institute
It is demultiplexing module and built-in descrambling module to state demultiplexing module, and demultiplexing module is first via demodulator output TS data
By the way that wherein demultiplexing channel is demultiplexing as ES data all the way, the ES data descrambled are descrambled by descrambling module；Second
The TS data of road demodulator output are by wherein demultiplexing channel obtains ES data all the way.
3. one kind according to claim 2 receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that
The ES data of descrambling include video ES, audio ES and data ES.
4. one kind according to claim 1 receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that institute
State Video Decoder by HDMI RCA interfaces vision signal be sent into TV in play.
5. one kind according to claim 1 receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that institute
State audio decoder by HDMI RCA interfaces audio data be sent into TV on play.
6. one kind according to claim 1 receives DVB-C and DTMB simple two-way signal set-top boxes simultaneously, which is characterized in that institute
State memory be mobile hard disk or USB flash disk, by USB interface the PES data that demultiplexing module exports be saved in mobile hard disk or
Person's USB flash disk.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721902283.4U CN207638801U (en) | 2017-12-29 | 2017-12-29 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously |
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| CN201721902283.4U CN207638801U (en) | 2017-12-29 | 2017-12-29 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108965953A (en) * | 2017-12-29 | 2018-12-07 | 深圳佳力拓科技有限公司 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top-box system and method simultaneously |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108965953A (en) * | 2017-12-29 | 2018-12-07 | 深圳佳力拓科技有限公司 | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top-box system and method simultaneously |
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