CN106534934A - Three-into-one-mode-based set-top box and realization method - Google Patents
Three-into-one-mode-based set-top box and realization method Download PDFInfo
- Publication number
- CN106534934A CN106534934A CN201610990285.7A CN201610990285A CN106534934A CN 106534934 A CN106534934 A CN 106534934A CN 201610990285 A CN201610990285 A CN 201610990285A CN 106534934 A CN106534934 A CN 106534934A
- Authority
- CN
- China
- Prior art keywords
- control chip
- chip processor
- top box
- demodulator
- set top
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
Abstract
The invention provides a three-into-one-mode-based set-top box and a realization method. The set-top box comprises a control chip processor, a demodulator connected to the control chip processor, and a tuning device connected to the demodulator. The control chip processor is connected to a tuner by a TS steam switch; the tuner is used for receiving terrestrial television, satellite television and cable television signals. The control chip processor is also connected with a video encoder, an audio D/A converter and an infrared receiver. Compatibility with satellite, ground and wired tuning modes is realized by using one tuning device and receiving of different modes is realized based control among control chip processor, the demodulator, and the tuning device, so that different signal receiving demands of users can be satisfied; the set-top box can be used conveniently; the using cost is lowered; the beautiful and space-saving effects as well as saving and environment protection effects are realized.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly, to a kind of Set Top Box based on three-in-one pattern and in fact
Existing method.
Background technology
Digital video switching box（Set Top Box, abbreviation STB）, box on so-called Set Top Box or machine is a connection
The equipment of television set and outside source.The digital signal of compression can be changed into television content by it, and show on a television set
Out.Signal can come from wire cable, satellite antenna, broadband network and terrestrial broadcasting.
At present, existing Set Top Box is single-mode mostly, has only a few to be that ground and satellite are compatible, and cannot be same
When support satellite, ground, wired Three models cannot thus meet the demand of the different reception signal of user, it is ensured that different
All it is capable of achieving to receive under environment, causes, using not convenient, to increased use cost.
The content of the invention
It is an object of the invention to provide a kind of Set Top Box and its implementation based on three-in-one pattern, which can be by control
Master chip processed, demodulator, realizing satellite, ground, the reception of wired different mode meet user to the control between tuner
The demand of different reception signals, convenient use reduce use cost.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of Set Top Box based on three-in-one pattern, including：Control chip processor, it is connected to the control chip processor
Demodulator and the tuner of the demodulator is connected to, the control chip processor also flows switch by TS and is connected to high frequency
Head, the tuner are respectively used to receive terrestrial television, satellite television and cable TV signal, and the control chip processor is also
It is connected with video encoder, audio D/A converter and infrared remote receiver.
Further, in the above-mentioned Set Top Box based on three-in-one pattern, the Set Top Box based on three-in-one pattern is also wrapped
Include：It is connected to the memorizer of the control chip processor.
Further, in the above-mentioned Set Top Box based on three-in-one pattern, the frequency range of the tuner is specially：Satellite
TV：950~2150MHz；Terrestrial television VHF: 174~230MHz、UHF: 470~862MHz；Cable television：11~862MHz.
Separately, the present invention also provides a kind of implementation method of the above-mentioned Set Top Box based on three-in-one pattern, methods described bag
Include following steps：
Step S11：The control chip processor sends frequency modulation according to the tuning mode signal for receiving and instructs to demodulator and tune
Humorous device；
Step S12：The tuner determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving, and the intermediate-freuqncy signal is sent out
Give demodulator；
Step S13：The demodulator determines the demodulation modes for needing according to the frequency modulation instruction for receiving, according to the intermediate-freuqncy signal
It is demodulated and obtains digital signal data, and the digital signal data is sent to into control chip processor；
Step S14：The control chip processor carries out parsing to the digital signal data and obtains television program information,
And video encoder and the audio D/A converter broadcasting television program letter are passed through according to the select command of user input
Breath.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, the frequency modulation instruction includes：Tuning
Band information, waiting time and concrete frequency point information.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, tune described in step S12
The step of device determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving is specifically included：
The tuner is instructed by being scanned to analogue signal frequency spectrum according to the frequency modulation for receiving, and is found out in analogue signal frequency spectrum
Available signal；
The tuner passes through AGC and IIC and the two-way adjustment of demodulator；
It is determined that there is the useful signal that user needs；
The intermediate-freuqncy signal of needs is filtrated to get from the useful signal.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, demodulate described in step S13
The step of device determines the demodulation modes for needing according to the frequency modulation instruction for receiving also includes：
The demodulator initializes all of depositor according to current demodulation modes.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, control described in step S14
Chip processor carries out the step of parsing obtains television program information to the digital signal data and is specially：
The control chip processor carries out descrambling demultiplexing process according to the standard of DVB to the digital signal data；
The control chip processor is further processed to the data after demultiplexing process and obtains effective television broadcasting section
Mesh information.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, described in step S14, control core
Piece processor also includes after carrying out the step of parsing obtains television program information to the digital signal data：
The television program information is saved in bin by the control chip processor.
Further, in the implementation method of the above-mentioned Set Top Box based on three-in-one pattern, also wrap before step S11
Include：User by search interface select need tuning pattern, by remote control send tuning mode signal to control chip at
Reason device, the control chip processor receive the tuning mode signal by infrared remote receiver.
Set Top Box of the present invention based on three-in-one pattern and its implementation by same tuner it is compatible support satellite,
Ground and wired three kinds of tuning modes, built-in demodulator support these three patterns, by controlling master chip, demodulator, tuning
The reception controlled to realize different mode between device, can meet the demand of the different reception signal of user, without the need in TV
Multiple stage Set Top Box is put in cabinet, and convenient use reduces use cost, and both save spaces attractive in appearance, and economical environment-protective.
Description of the drawings
Fig. 1 is principle schematic of the present invention based on the Set Top Box of three-in-one pattern；
Fig. 2 is schematic flow sheet of the present invention based on the implementation method of the Set Top Box of three-in-one pattern.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Fig. 1 is referred to, the present invention is included based on the Set Top Box of three-in-one pattern：Control chip processor 10, it is connected to institute
The demodulator 20 for stating control chip processor 10 and the tuner 30 for being connected to the demodulator 20, the control chip processor
10 are also connected to tuner 50 by TS streams switch 40, the tuner 50 be respectively used to receive terrestrial television, satellite television and
Cable TV signal, the control chip processor 10 are also associated with video encoder 60, audio D/A converter 70 and infrared connect
Receive device 80.
Wherein, the Set Top Box based on three-in-one pattern also includes：It is connected to depositing for the control chip processor 10
Reservoir 90, the memorizer 90 include FLASH memory and DDR memory.
, according to different mode of operations, frequency range is different, specially for the tuner：
Satellite television：950~2150MHz；Terrestrial television VHF: 174~230MHz、UHF: 470~862MHz；Cable television：11~
862MHz。
Separately, Fig. 1 and Fig. 2 is referred to, the present invention also provides a kind of realization side of the above-mentioned Set Top Box based on three-in-one pattern
Method, the method comprising the steps of：
Step S11：The control chip processor 10 sends frequency modulation according to the tuning mode signal for receiving and instructs to demodulator 20
And tuner 30；
Step S12：The tuner 30 determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving, and by the intermediate-freuqncy signal
It is sent to demodulator 20；
Step S13：The demodulator 20 determines the demodulation modes for needing according to the frequency modulation instruction for receiving, according to intermediate frequency letter
Number it is demodulated and obtains digital signal data, and the digital signal data is sent to into control chip processor 10；
Step S14：10 pairs of digital signal datas of the control chip processor carry out parsing and obtain television program letter
Breath, and the television broadcasting is played by video encoder 60 and audio D/A converter 70 according to the select command of user input
Programme information.
Wherein, also include before step S11：User selects the tuning pattern for needing by search interface, by distant
Control device sends tuning mode signal to control chip processor 10, and the control chip processor 10 is connect by infrared remote receiver 80
Receive the tuning mode signal.In the present invention, the tuning pattern includes：The three of satellite tuning, ground tuning and wired tuning
Plant tuning pattern.
The frequency modulation instruction includes：Tuning band information（Full frequency band automatic channel search or single-frequency point tuning）, the waiting time and
Concrete frequency point information.
The step of tuner 30 described in step S12 determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving has
Body includes：
The tuner 30 is instructed by being scanned to analogue signal frequency spectrum according to the frequency modulation for receiving, and finds out analogue signal frequency spectrum
In available signal；
The tuner 30 passes through AGC and IIC and the two-way adjustment of demodulator；This step is specially：Assisted by IIC both-way communications
View, according to signal(l)ing condition, AGC has different level outputs to tuner 30, and demodulator 30 can be with according to the level value of this AGC
Judge the situation of signal, corresponding fine setting instruction is assigned by IIC to tuner, locking signal is finally reached, or according to AGC
Value judge that signal cannot be locked really.
It is determined that there is the useful signal that user needs；This step is specially：Value of the demodulator 30 according to AGC, accordingly
Depositor has different values, can decide whether effectively according to these different numerical value, that is, whether signal locks.
The intermediate-freuqncy signal of needs is filtrated to get from the useful signal.
The step of demodulator 20 described in step S13 determines the demodulation modes for needing according to the frequency modulation instruction for receiving is also
Including：
The demodulator 20 initializes all of depositor according to current demodulation modes.Initialization register is to ensure
Each depositor of demodulator resets, and demodulation according to actual needs instructs the numerical value for re-writing needs, it is ensured that no rubbish number
According to residual or interference.
10 pairs of digital signal datas of control chip processor described in step S14 carry out parsing, and to obtain TV wide
The step of broadcasting programme information is specially：
The control chip processor 10 carries out descrambling demultiplexing according to the standard of DVB to the digital signal data（deumux）
Process；
The control chip processor 10 is further processed to the data after demultiplexing process and obtains effective television broadcasting
Programme information.
10 pairs of digital signal datas of control chip processor described in step S14 carry out parsing and obtain television broadcasting
Also include after the step of programme information：
The television program information is saved in bin 90 by the control chip processor 10.
It should be noted that the demodulator is according to different tuning patterns, demodulation modes are different：
Satellite：QPSK ,8PSK,16APSK,32APSK；Ground：256QAM, 64QAM, 16QAM and QPSK；It is wired：
16QAM 、32QAM、64QAM、128QAM、256QAM
The demodulator 20 is directed to different intermediate-freuqncy signals, and the adaptively selected different modes of demodulation meeting remove operation, the bin
During 90 preservation TV programme, the data structure of different mode is different：Satellite television：Need satellite information, transponder information；Ground
Surface TV：Need bandwidth and frequency point information；Cable television：Need bandwidth and frequency point information.
Compared to prior art, Set Top Box and its implementation of the present invention based on three-in-one pattern are by same tuning
Device is compatible to support that satellite, ground and wired three kinds of tuning modes, built-in demodulator support these three patterns, by controlling main core
Piece, demodulator, the reception controlled to realize different mode between tuner can meet the need of the different reception signal of user
Ask, without the need for putting multiple stage Set Top Box in TV bench, convenient use reduces use cost, and both save spaces attractive in appearance, save again
About environmental protection.
Here description of the invention and application are illustrative, are not wishing to limit the scope of the invention to above-described embodiment
In.The deformation and change of embodiments disclosed herein is possible, real for those skilled in the art
The replacement and equivalent various parts for applying example is known.It should be appreciated by the person skilled in the art that without departing from the present invention
Spirit or essential characteristics in the case of, the present invention can in other forms, structure, arrangement, ratio, and with other components,
Material and part are realizing.In the case of without departing from scope and spirit of the present invention, embodiments disclosed herein can be entered
Other deformations of row and change.
Claims (10)
1. a kind of Set Top Box based on three-in-one pattern, it is characterised in that include：Control chip processor, it is connected to the control
The demodulator of chip processor processed and the tuner of the demodulator is connected to, the control chip processor is also opened by TS streams
Connection is connected to tuner, and the tuner is respectively used to receive terrestrial television, satellite television and cable TV signal, the control
Chip processor is also associated with video encoder, audio D/A converter and infrared remote receiver.
2. the Set Top Box based on three-in-one pattern according to claim 1, it is characterised in that described based on three-in-one pattern
Set Top Box also include：It is connected to the memorizer of the control chip processor.
3. the Set Top Box based on three-in-one pattern according to claim 2, it is characterised in that the frequency model of the tuner
Enclose specially：Satellite television：950~2150MHz；Terrestrial television VHF: 174~230MHz、UHF: 470~862MHz；Wired electricity
Depending on：11~862MHz.
4. the implementation method of the Set Top Box based on three-in-one pattern according to any one of claim 1-3, it is characterised in that
The method comprising the steps of：
Step S11：The control chip processor sends frequency modulation according to the tuning mode signal for receiving and instructs to demodulator and tune
Humorous device；
Step S12：The tuner determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving, and the intermediate-freuqncy signal is sent out
Give demodulator；
Step S13：The demodulator determines the demodulation modes for needing according to the frequency modulation instruction for receiving, according to the intermediate-freuqncy signal
It is demodulated and obtains digital signal data, and the digital signal data is sent to into control chip processor；
Step S14：The control chip processor carries out parsing to the digital signal data and obtains television program information,
And video encoder and the audio D/A converter broadcasting television program letter are passed through according to the select command of user input
Breath.
5. the implementation method of the Set Top Box based on three-in-one pattern according to claim 4, it is characterised in that the frequency modulation
Instruction includes：Tuning band information, waiting time and concrete frequency point information.
6. the implementation method of the Set Top Box based on three-in-one pattern according to claim 4, it is characterised in that the step
The step of tuner described in S12 determines the intermediate-freuqncy signal for needing according to the frequency modulation instruction for receiving is specifically included：
The tuner is instructed by being scanned to analogue signal frequency spectrum according to the frequency modulation for receiving, and is found out in analogue signal frequency spectrum
Available signal；
The tuner passes through AGC and IIC and the two-way adjustment of demodulator；
It is determined that there is the useful signal that user needs；
The intermediate-freuqncy signal of needs is filtrated to get from the useful signal.
7. the implementation method of the Set Top Box based on three-in-one pattern according to claim 4, it is characterised in that the step
The step of demodulator described in S13 determines the demodulation modes for needing according to the frequency modulation instruction for receiving also includes：
The demodulator initializes all of depositor according to current demodulation modes.
8. the implementation method of the Set Top Box based on three-in-one pattern according to claim 4, it is characterised in that the step
Control chip processor described in S14 is carried out to the digital signal data to be had the step of parsing obtains television program information
Body is：
The control chip processor carries out descrambling demultiplexing process according to the standard of DVB to the digital signal data；
The control chip processor is further processed to the data after demultiplexing process and obtains effective television broadcasting section
Mesh information.
9. the implementation method of the Set Top Box based on three-in-one pattern according to claim 8, it is characterised in that the step
Control chip processor described in S14 carries out the step of parsing obtains television program information it to the digital signal data
Also include afterwards：
The television program information is saved in bin by the control chip processor.
10. the implementation method of the Set Top Box based on three-in-one pattern according to claim 4, it is characterised in that the step
Also include before rapid S11：User selects the tuning pattern for needing by search interface, sends tuning mode signal by remote control
The tuning mode signal is received by infrared remote receiver to control chip processor, the control chip processor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990285.7A CN106534934A (en) | 2016-11-10 | 2016-11-10 | Three-into-one-mode-based set-top box and realization method |
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|---|---|---|---|
| CN201610990285.7A CN106534934A (en) | 2016-11-10 | 2016-11-10 | Three-into-one-mode-based set-top box and realization method |
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Family
ID=58350836
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| CN201610990285.7A Pending CN106534934A (en) | 2016-11-10 | 2016-11-10 | Three-into-one-mode-based set-top box and realization method |
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Cited By (5)
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| CN107295386A (en) * | 2017-08-23 | 2017-10-24 | 四川九州电子科技股份有限公司 | Support the professional decoder of three nets of ground, satellite and wire transmission |
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| CN109743622A (en) * | 2019-01-23 | 2019-05-10 | 青岛海信电器股份有限公司 | A kind of tuning method for parameter configuration, device and equipment based on CAM card |
| CN113099302A (en) * | 2021-04-06 | 2021-07-09 | 深圳市通久电子有限公司 | Set top box based on three-in-one mode and working method thereof |
| CN115037974A (en) * | 2022-06-14 | 2022-09-09 | 中山亿联智能科技有限公司 | Set top box supporting multi-mode switching |
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| CN115037974B (en) * | 2022-06-14 | 2023-08-25 | 中山亿联智能科技有限公司 | Set top box supporting multi-mode switching |
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