CN207706348U - A kind of intelligent transmitting device for digital television signal transmission - Google Patents
A kind of intelligent transmitting device for digital television signal transmission Download PDFInfo
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- CN207706348U CN207706348U CN201721575150.0U CN201721575150U CN207706348U CN 207706348 U CN207706348 U CN 207706348U CN 201721575150 U CN201721575150 U CN 201721575150U CN 207706348 U CN207706348 U CN 207706348U
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- digital television
- signal transmission
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Abstract
The utility model discloses a kind of intelligent transmitting devices for digital television signal transmission, including：For the central processing unit of server end, high frequency head unit, digital demodulator unit, USB converting units, data storage cell and wireless transmitter module, and for the wireless receiving module and display terminal of client；The output end of the high frequency head unit connects digital demodulator unit, the output end of the digital demodulator unit connects USB converting units, the output end of the USB converting units connects central processing unit, the central processing unit connection data storage cell and wireless transmitter module, the output end of the wireless receiving module connect display terminal；The high frequency head unit receives digital radio signal, and is converted to digital medium-frequency signal；Digital demodulator unit carries out demodulation process to the digital medium-frequency signal received；USB converting units are transferred to central processing unit by usb bus after demodulating digital demodulator unit and handle.
Description
Technical field
The utility model is related to digital TV technologies, and in particular to a kind of intelligence for digital television signal transmission
Transmitting device.
Background technology
DTV STB is integrated with high frequency head module, digital demodulating block, audio/video decoding module, image output mould
Block and central processing unit and necessary software can receive digital television signal and decoded image is output to television set
On terminal presentation facilities such as (displays).
DTV STB can provide one in CVBS/YC/YPbPr/VGA/HDMI according to the hardware approach used
Kind or several output interfaces, terminal receiving device must also have corresponding input interface that could receive simultaneously display of television programmes.
The intelligent terminal with display screen becomes more and more popular in recent years, including PC/ Intelligent flats/smart mobile phone etc. is various sets
Standby, these equipment have certain multimedia processing capability, can provide the display effect of high quality, but these equipment are not
Audio and video input interface more than support, also can not just coordinate DTV STB to use.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, provide one kind and are used for
The intelligent transmitting device of digital television signal transmission.Audio/video flow is decoded and shown using the multi-media processing unit of these equipment
Show on a terminal screen.
The utility model solves technical solution used by its technical problem：
A kind of intelligent transmitting device for digital television signal transmission, which is characterized in that including：
For the central processing unit of server end, high frequency head unit, digital demodulator unit, USB converting units, data
Storage unit and wireless transmitter module, and wireless receiving module and display terminal for client；The high frequency head unit
Output end connect digital demodulator unit, the output end of the digital demodulator unit connects USB converting units, the USB
The output end of converting unit connects central processing unit, the central processing unit connection data storage cell and wireless transmission mould
Block carries out the transmission of data by wireless transmitter module and wireless receiving module between the server end and client, described
The output end of wireless receiving module connects display terminal；
The high frequency head unit receives digital radio signal, and is converted to digital medium-frequency signal；Digital demodulator unit pair
The digital medium-frequency signal received carries out demodulation process；USB converting units by digital demodulator unit demodulate after DTV
Transport stream is transformed into usb data frame and is transferred to central processing unit by usb bus and handled.
Further, the digital demodulation unit is to DVB-T/T2/C/S/S2, ATSC, ISBT, DTMB multiple digital television
Format is demodulated.
Further, the digital demodulator unit supports VSB/OFDM/QPSK/APSK/QAM formats.
Further, the central processing unit uses the framework that CPU+LINUX is combined, and data are obtained from usb bus
After carry out data processing.
Further, data processing is carried out after the acquisition data from usb bus, specifically included：Central processing unit root
Demultiplexing work is carried out to TS streams using demultiplexing module according to corresponding DTV specification, therefrom extracts the PES numbers of program
According to；Then IP packets are re-packaged into PES data and are transferred to client.
Further, the PES data include video PES, audio PES, data PES.
Further, the demultiplexing module further include descrambling engine, the descrambling engine for scrambled data into
Row descrambling, supports the reception of encrypted digital television program.
Further, the output end of the wireless receiving module connects display terminal；It specifically includes：Wireless receiving module connects
The audio, video data that server is sent is received, the audio/video decoding unit of current device is called to be decoded audio, video data, is solved
Data after code are output to display terminal and are shown.
Further, the high frequency head unit uses MXL608 chips, the digital demodulator unit to use ATBM7812_
The chip of 7X7 models, the USB converting units use the chip of UTV007 models.
Further, the storage unit includes SDRAM and Flash, and wherein Flash uses MX25L6406EM21-12G
The chip of model, SDRAM use FBGA4_8X14.
The utility model has the following advantages compared with prior art：
The utility model uses separation design, and server is as transmitting terminal, and client is receiving terminal, using wireless transmission
Mode carries out the transmission of data, and server is acquired audio/video information by high frequency collecting unit, then passes through digital solution
It adjusts device unit to be demodulated into digital TV transmission stream to the audio/video information of use, can support parallel and serial input, pass through USB
Digital TV transmission stream is converted to usb data frame and is transferred at central processing unit by usb bus by converting unit
Reason, central processing unit are combined using efficient CPU+LINUX, and data are carried out in main control unit again after usb bus acquisition data
Processing.Demultiplexing module also includes a descrambling engine, can descramble to scrambled data, can support encrypted number
The reception of TV programme.Various PES formatted datas after demultiplexing are Resealed into IP packets and are transmitted to reception by WIFI
In equipment, this link realizes the key job that digital television signal is converted to general networking audio/video flow.This practicality is new
Type takes full advantage of the multimedia processing capability and screen display of user's existing device, greatly reduces the cost of whole system；
Easy to use, small, low in energy consumption, cooperation mobile phone can outdoors, and vehicle-mounted wait uses in environment.
Description of the drawings
Fig. 1 is a kind of intelligent transmitting device structure chart for digital television signal transmission provided by the utility model；
Fig. 2 is the tuner element circuit structure chart provided by the utility model；
Fig. 3 is the digital demodulator element circuit structure chart provided by the utility model；
Fig. 4 is the SDRAM memory circuit structure diagram in the data storage cell provided by the utility model；
Fig. 5 is the flash storage circuit structure diagram in the data storage cell provided by the utility model.
Specific implementation mode
Specific embodiment of the present invention is described with reference to the accompanying drawings and embodiments：
Referring to Fig. 1, for a kind of intelligent transmitting device structure for digital television signal transmission provided by the utility model
Figure；
As shown in Figure 1, a kind of intelligent transmitting device for digital television signal transmission, which is characterized in that including：For
Central processing unit, high frequency head unit, digital demodulator unit, USB converting units, data storage cell and the nothing of server end
Line transmitting module, and wireless receiving module and display terminal for client；The output end of the high frequency head unit connects
Digital demodulator unit, the output end of the digital demodulator unit connect USB converting units, the USB converting units it is defeated
Outlet connects central processing unit, the central processing unit connection data storage cell and wireless transmitter module, the service
The transmission of data, the wireless receiving module are carried out between device end and client by wireless transmitter module and wireless receiving module
Output end connect display terminal；
The high frequency head unit receives digital radio signal, and is converted to digital medium-frequency signal；Digital demodulator unit pair
The digital medium-frequency signal received carries out demodulation process；USB converting units by digital demodulator unit demodulate after DTV
Transport stream is transformed into usb data frame and is transferred to central processing unit by usb bus and handled.
In the utility model embodiment, digital demodulator unit uses the chip of ATBM7812_7X7 models, the number
Demodulating unit demodulates DVB-T/T2/C/S/S2, ATSC, ISBT, DTMB multiple digital television format.
Wherein digital demodulator unit supports VSB/OFDM/QPSK/APSK/QAM formats.
Central processing unit uses the framework that CPU+LINUX is combined, and is carried out from data after obtaining data from usb bus
Reason.
Data processing is carried out after wherein obtaining data from usb bus, is specifically included：Central processing unit is according to corresponding number
Word TV specification carries out demultiplexing work using demultiplexing module to TS streams, therefrom extracts the PES data of program；Then right
PES data are re-packaged into IP packets and are transferred to client.
In the utility model embodiment, the output end of wireless receiving module connects display terminal；It specifically includes：Wireless receiving
Module receives the audio, video data that server is sent, and the audio/video decoding unit of current device is called to solve audio, video data
Code, decoded data are output to display terminal and are shown.
The utility model uses separation design, and server is as transmitting terminal, and client is receiving terminal, using wireless transmission
Mode carries out the transmission of data, and server is acquired audio/video information by high frequency collecting unit, then passes through digital solution
It adjusts device unit to be demodulated into digital TV transmission stream to the audio/video information of use, can support parallel and serial input, pass through USB
Digital TV transmission stream is converted to usb data frame and is transferred at central processing unit by usb bus by converting unit
Reason, central processing unit are combined using efficient CPU+LINUX, and data are carried out in main control unit again after usb bus acquisition data
Processing.Main control unit is demultiplexed (DEMUX) work according to corresponding DTV specification to TS streams, therefrom extracts program
PES data (Packetized Elementary Streams (grouping ES packets)), including video PES, audio PES, data
PES.Demultiplexing module also includes a descrambling engine, can descramble to scrambled data, can support encrypted number
The reception of TV programme.Various PES formatted datas after demultiplexing are Resealed into IP packets and are transmitted to reception by WIFI
In equipment, this link realizes the key job that digital television signal is converted to general networking audio/video flow.This part is soft
Part is not the prior art, is to send the TS/ES data conversions of traditional DVB at IP data (flow media data packet of HLS formats)
It is received to client software.
It is received by the WIFI of intelligent terminal and multimedia decoding ability receives and displaying video programs.Digital solution
Adjust device unit that can support the multiple digital televisions format such as DVB-T/T2/C/S/S2, ATSC, ISBT, DTMB.Client can adopt
With the terminal for supporting the multiple systems such as windows/linux/android/ios.
Tuner (high frequency head unit) receives digital radio signal, and is converted to digital intermediate frequency (zero intermediate frequency) signal；
Demodulation (digital demodulator unit, Demod) carries out demodulation process to digital intermediate frequency (zero intermediate frequency) signal received,
According to the DTV of different-format, including but not limited to following format：DVB-C/DVB-C/T2/DVB-S/S2、DTMB、
ATSC, ISDB support VSB/OFDM/QPSK/APSK/QAM
Etc. various different modulating formats, independent Demod chips are used in the design, can flexibly support no number
Word TV format is suitable for different countries and regions.Compatible 4 kinds of Demod chips in entire design, support respectively DVB,
The digital television formats such as DTMB, ATSC and ISDB, Demod adaptively support modulation system, can support difference automatically
Modulation system.
A WIFI AP equipment is also integrated in main control unit, smart terminal products various in this way can pass through WIFI
It is connected to the present apparatus and obtains audio, video data.
Client supports the various mainstream operation systems such as android/ios/windows, what reception was sent from WIFI
Audio, video data, and the audio and video hardware decoding unit of current device is called to complete the decoding to audio, video data, after decoding
Data output be shown on the display unit of intelligent terminal,
Referring to Fig. 2 to Fig. 5, wherein Fig. 2 is the tuner element circuit structure chart provided by the utility model；Fig. 3 is
The digital demodulator element circuit structure chart provided by the utility model；Fig. 4 is that the data provided by the utility model are deposited
SDRAM memory circuit structure diagram in storage unit；Fig. 5 is in the data storage cell provided by the utility model
Flash storage circuit structure diagram.
A kind of intelligent transmitting device for digital television signal transmission provided by the utility model, wherein central processing list
Member use CPU+LINUX frameworks, high frequency head unit use MXL608 chips, wherein CLK_OUT pins export CLK signal to
Demod chips, SDA pins and SCL pins for connect with the SDA pins of tuner chips and SCL pins, RESET_N pins and
The RST pins of tuner chips connect, and USB converting units use the chip of UTV007 models, storage unit include SDRAM and
Flash, wherein Flash use the chip of MX25L6406EM21-12G models, SDRAM to use FBGA4_8X14.
Data exchange process between client and server-side is as follows：
Client sends query facility node when server-side receives inquiry signal to server-side and returns to facility information
To client, client sends the request for establishing network connection, service termination to server-side after receiving the facility information of return
After receiving the request, the result of successful connection or connection failure is returned into client, client carries out down according to returning the result
Single stepping illustrates that network connection has been established when it is successful to return the result, and client sends inquiry tuning result to service
Device, server respond the tuning result and tuning result are returned to client, and client, which is sent, obtains asking for SERVICE lists
It asks, server responds and return to client SERVICE lists, after client receives SERVICE list return informations, sends
Request plays, and server-side returns to M3U8 data packets to client, completes data interaction.
The utility model takes full advantage of the multimedia processing capability and screen display of user's existing device, greatly reduces
The cost of whole system；Easy to use, small, low in energy consumption, cooperation mobile phone can outdoors, and vehicle-mounted wait uses in environment.
The preferred embodiment for the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (10)
1. a kind of intelligent transmitting device for digital television signal transmission, which is characterized in that including：For in server end
Central Processing Unit, high frequency head unit, digital demodulator unit, USB converting units, data storage cell and wireless transmitter module,
And wireless receiving module and display terminal for client；The output end of the high frequency head unit connects digital demodulator list
The output end of member, the digital demodulator unit connects USB converting units, the output end connection center of the USB converting units
Processing unit, the central processing unit connection data storage cell and wireless transmitter module, the server end and client
Between the transmission of data, the output end connection of the wireless receiving module are carried out by wireless transmitter module and wireless receiving module
Display terminal；
The high frequency head unit receives digital radio signal, and is converted to digital medium-frequency signal；Digital demodulator unit is to receiving
The digital medium-frequency signal arrived carries out demodulation process；USB converting units by digital demodulator unit demodulate after digital television transfer
Circulation, which changes to usb data frame and is transferred to central processing unit by usb bus, to be handled.
2. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that institute
Digital demodulation unit is stated to demodulate DVB-T/T2/C/S/S2, ATSC, ISBT, DTMB multiple digital television format.
3. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that institute
It states digital demodulator unit and supports VSB/OFDM/QPSK/APSK/QAM formats.
4. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that institute
The framework that central processing unit uses CPU+LINUX to be combined is stated, data processing is carried out after obtaining data from usb bus.
5. a kind of intelligent transmitting device for digital television signal transmission according to claim 4, which is characterized in that institute
It states and carries out data processing after obtaining data from usb bus, specifically include：Central processing unit is according to corresponding DTV specification
Demultiplexing work is carried out to TS streams using demultiplexing module, therefrom extracts the PES data of program；Then again to PES data
It is encapsulated as IP packets and is transferred to client.
6. a kind of intelligent transmitting device for digital television signal transmission according to claim 5, which is characterized in that institute
It includes video PES, audio PES, data PES to state PES data.
7. a kind of intelligent transmitting device for digital television signal transmission according to claim 5, which is characterized in that institute
It further includes descrambling engine to state demultiplexing module, and the descrambling engine supports encrypted number for descrambling to scrambled data
The reception of word TV programme.
8. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that institute
State the output end connection display terminal of wireless receiving module；It specifically includes：Wireless receiving module receives the sound that server is sent and regards
Frequency evidence calls the audio/video decoding unit of current device to be decoded audio, video data, and decoded data are output to aobvious
Show that terminal is shown.
9. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that institute
It states high frequency head unit and uses MXL608 chips, the digital demodulator unit uses the chip of ATBM7812_7X7 models, described
USB converting units use the chip of UTV007 models.
10. a kind of intelligent transmitting device for digital television signal transmission according to claim 1, which is characterized in that
The storage unit includes SDRAM and Flash, and wherein Flash uses the chip of MX25L6406EM21-12G models, SDRAM to adopt
Use FBGA4_8X14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721575150.0U CN207706348U (en) | 2017-11-22 | 2017-11-22 | A kind of intelligent transmitting device for digital television signal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721575150.0U CN207706348U (en) | 2017-11-22 | 2017-11-22 | A kind of intelligent transmitting device for digital television signal transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207706348U true CN207706348U (en) | 2018-08-07 |
Family
ID=63021450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721575150.0U Expired - Fee Related CN207706348U (en) | 2017-11-22 | 2017-11-22 | A kind of intelligent transmitting device for digital television signal transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207706348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291486A (en) * | 2020-10-30 | 2021-01-29 | 无锡路通视信网络股份有限公司 | Software control method for multiplexing a set of high-frequency head to receive DVB-C and DTMB signals in single-output system |
-
2017
- 2017-11-22 CN CN201721575150.0U patent/CN207706348U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291486A (en) * | 2020-10-30 | 2021-01-29 | 无锡路通视信网络股份有限公司 | Software control method for multiplexing a set of high-frequency head to receive DVB-C and DTMB signals in single-output system |
| CN112291486B (en) * | 2020-10-30 | 2024-02-02 | 无锡路通视信网络股份有限公司 | Software control method for multiplexing one set of tuner to receive DVB-C and DTMB signals |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 Termination date: 20181122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |