CN105915306A - China digital radio CDR receiving terminal and realization method of the receiving terminal - Google Patents
China digital radio CDR receiving terminal and realization method of the receiving terminal Download PDFInfo
- Publication number
- CN105915306A CN105915306A CN201610417270.1A CN201610417270A CN105915306A CN 105915306 A CN105915306 A CN 105915306A CN 201610417270 A CN201610417270 A CN 201610417270A CN 105915306 A CN105915306 A CN 105915306A
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- cdr
- module
- data
- central processing
- demodulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a terminal with a CDR (China Digital Radio) receiving function. The terminal comprises an antenna, a tuning module, a demodulation module, a central processing module, a UART interface and a TS interface. The antenna selectively receives CDR data and transmits the data to the tuning module. The tuning module tunes the CDR data and transmits the data to the demodulation module. The demodulation module is connected with the central processing module by the UART interface and the TS interface, receives a control instruction from the central processing module by the UART interface, demodulates the CDR data according to the control instruction and then transmits the demodulated CDR data to the central processing module by the TS interface. The central processing module processes the demodulated CDR data and outputs the processed data. According to the terminal and the method, the UART interface and the TS interface are used between the demodulation module and the central processing module, therefore, the processing capability of the terminal with the CDR receiving function is improved, and the terminal has a suitable data output interface and a data format.
Description
Technical field
The present invention relates to communication broadcasting system, particularly relate to a kind of Chinese Digital audio broadcasting (China
Digital Radio, CDR) reception terminal and its implementation.
Background technology
" " 12 " radio, film and television science and technology development planning " clearly proposes China to be advanced sound radio
Digitized, sets up the digital audio broadcasting system being suitable for China's national situation, having independent intellectual property right, for
These research and development expanding Chinese Digital audio droadcasting system CDR and test, and take the lead in taking in frequency modulation frequency range
Achievement, Beijing, Guangdong sequentially activated CDR digital audio broadcasting demonstration network build and run.
2013, the channel of CDR and the industry standard of two parts of multiplexing were issued, in succession according to supervisor
The deployment of department, China, by starting the construction of nationwide CDR digital audio broadcasting net, takes " three steps
Walk " strategy, plan realized CDR digital audio broadcasting and covers the above city of region, the whole nation by 2016
Target.
Chinese Digital audio broadcasting (China Digital Radio, CDR) is the numeral that China is own
Audio Broadcasting standard, frequency modulation (FM) is the most highly developed Audio Broadcasting standard.These are two years old
The standard of kind is all to receive radio signal by antenna, and CDR broadcast uses the frequency range identical with FM, will
These two functions are integrated into one and receive in terminal, it is possible to meet user in different occasions, time
Different demands.
The content of CDR digital audio broadcasting is in addition to the audio frequency that traditional F M is broadcasted, it is also possible to include picture,
Video, word etc., even if owing to the factors such as policy restriction can not carry out video broadcasting in real time, but
But content propelling movement can be carried out, after possessing the terminal reception of decoding, display function, it is possible to achieve local
Broadcasting.So CDR operator just can provide value-added service by this form.
CDR is as the digital broadcast transmission mode of a kind of frequency same with FM, with FM analog broadcasting, DTMB
Ground digital television broadcast has compared a lot of unrivaled advantage.Compared with FM, CDR transferring content
In addition to audio frequency, it is also possible to the transmission content such as video, picture, and wide with DTMB terrestrial DTV
Broadcasting and compare, its front end emission scrap build low cost, coverage effect is good.Therefore, CDR must in the future
The multimedia broadcasting in addition to TV will be carried out, and this multimedia broadcasting will need exist for powerful
Receiver terminal is supporting, and such receiver needs disposal ability compared with main control chip strong, that function is more
Coordinate, then need exist between CDR demodulation chip and main control chip suitable data output interface,
Data form.
Summary of the invention
It is an object of the invention to provide a kind of Chinese Digital audio broadcasting (China Digital Radio,
CDR) reception terminal and its implementation.
In first aspect, the invention provides the reality of the reception terminal of a kind of Chinese Digital audio broadcasting CDR
Existing method, it is characterised in that including: receive CDR data；Described CDR data are tuned；Logical
Cross UART interface and receive control instruction from central processing module, and according to described control instruction to described CDR
Data are demodulated, and then by described TS interface, the CDR data after demodulation are transferred to described centre
Reason module；Described central processing module exports after processing the CDR data after demodulation.
Preferably, the process to the CDR data after demodulation of described central processing module includes: to described
CDR data after demodulation demultiplex；To the CDR decoding data after demultiplexing.
Preferably, described method also includes: decoded CDR data shown with visual form.
Preferably, described method also includes: decoded CDR data exported with audio form.
Preferably, described method also includes: the intermediate data in storage CDR data decoding procedure and solution
CDR data after Ma.
In second aspect, the invention provides the reception terminal of a kind of Chinese Digital audio broadcasting CDR, its
It is characterised by, including: antenna, tuner module, demodulation module, central processing module, universal asynchronous receipts
Send out device UART interface and transport stream TS interface, wherein: described antenna is connected to described tuner module, use
In receiving CDR data and the CDR data received being transferred to described tuner module；Described tuner module
It is connected to described demodulation module, for described CDR data are tuned and send it to described demodulation
Module；Described demodulation module is connected to described central authorities by described UART interface and described TS interface and processes
Module, is used for by described UART interface from described central processing module reception control instruction, and according to
Described CDR data are demodulated by described control instruction, then by described TS interface by the CDR after demodulation
Data are transferred to described central processing module；Described central processing module is for the CDR data after demodulation
Export after processing.
Preferably, described central processing module includes: demultiplexing module, for the CDR after described demodulation
Data demultiplex；Decoder module, it is connected to described demultiplexing module, after to demultiplexing
Export after CDR decoding data.
Preferably, described terminal also includes: display module, and it is connected with described central processing module,
For decoded CDR data are shown with visual form.
Preferably, described terminal also includes: audio-frequency module, and it is connected with described central processing module,
For decoded CDR data are exported with audio form.
Preferably, described terminal also includes: memory module, and it is connected with described central processing module,
For storing the intermediate data in CDR data decoding procedure and decoded CDR data.
The present invention is by using UART interface and TS interface between demodulation module and middle control module so that
The terminal processing capacity with CDR receive capabilities is strengthened, and is provided with suitable data output interface
With data form.
Accompanying drawing explanation
Fig. 1 is the merit of the reception terminal of a kind of Chinese Digital audio broadcasting CDR according to embodiments of the present invention
Can schematic block diagram；
Fig. 2 is the schematic flow sheet of the implementation method of CDR receive capabilities in Fig. 1.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
Fig. 1 is the merit of the reception terminal of a kind of Chinese Digital audio broadcasting CDR according to embodiments of the present invention
Can block diagram.
As it is shown in figure 1, this terminal includes that antenna, tuner module, demodulation module, UART interface, TS connect
Mouth, central processing module, memory module, display module and audio-frequency module.
Antenna is connected to tuner module, is used for receiving CDR data and being transmitted to tuner module.Tuning
Module is also connected to demodulation module, is tuned for the CDR data receiving antenna, then will adjust
CDR data after humorous are transferred to demodulation module.Demodulation module connects also by UART interface and TS interface
To central processing module, for receiving control instruction, and root by UART interface from central processing module
According to control instruction, CDR data are demodulated, then by TS interface, the CDR data after demodulation are transmitted
To central processing module.
Central processing module exports after processing the CDR data after demodulation, and it can include solving
Multiplexing module and decoder module (not shown), wherein demultiplexing module is after to described demodulation
CDR data demultiplex, and decoder module is connected to described demultiplexing module, after to demultiplexing
Export after CDR decoding data.
Central processing module is connected with memory module, display module and audio-frequency module the most respectively, is additionally operable to
Display module is carried out display screen driving, then by decoded audio signal by audio-frequency module export to
User, or decoded video signal is shown on display module.
Memory module is built in terminal, and it can include but not limited to Nor to use various forms
Flash, TF card, Nand Flash, DDR2, it drives module to be connected with decoding, is used for storing demodulation
After, the related data of the CDR needed for decoder, these data can be such as audio-frequency multiplex layer data, solves
Code layer frame compression data, decoding intermediate data, PCM data/video/audio etc. after decoding.
Preferably, during described memory module is additionally operable to the file data decoding storing in external memory storage
Intermediate data and decoded file data.Such as, decoded file can also select according to user
Select in the memory module being stored in terminal built-in, in order to user in the case of there is no external storage also
Can watch or listen to.
Fig. 2 is the flow chart of the implementation method of CDR receive capabilities in Fig. 1.
In step 201, receive CDR data by antenna.
In step 202, the CDR data received are tuned.
In step 203, receive control instruction by UART interface from CPU.
In step 204, according to the control instruction received, the CDR data after tuning are demodulated.
In step 205, by TS interface, the CDR data after demodulation are transferred to CPU.
In step 206, the CDR data after demodulation are demultiplexed and decode.
In step 207, decoded CDR data are exported in modes such as audio or videos.
The terminal of the present invention may be realized in various forms, and can be such as to be carried with by user or wear
The portable terminal worn, it is also possible to be car-mounted terminal etc..The terminal of the present invention is by by three function collection
Become on a station terminal, it is possible to meet user in different occasion, the different demands of time.
Professional should further appreciate that, describes in conjunction with the embodiments described herein
The unit of each example and algorithm steps, it is possible to come with electronic hardware, computer software or the combination of the two
Realize, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function
Generally describe composition and the step of each example.These functions are come with hardware or software mode actually
Perform, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can be to often
Individual specifically should being used for uses different methods to realize described function, but this realization it is not considered that
Beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can use hardware, process
The software module that device performs, or the combination of the two implements.Software module can be placed in random access memory
(RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable ROM,
Other form any well known in depositor, hard disk, moveable magnetic disc, CD-ROM or technical field
Storage medium in.
Above-described detailed description of the invention, is carried out the purpose of the present invention, technical scheme and beneficial effect
Further describe.Be it should be understood that the foregoing is only the present invention detailed description of the invention and
, the protection domain being not intended to limit the present invention, all within the spirit and principles in the present invention, done
Any modification, equivalent substitution and improvement etc., should be included within the scope of the present invention.
Claims (10)
1. the implementation method of a Chinese Digital audio broadcasting CDR reception terminal, it is characterised in that including:
Receive CDR data；
Described CDR data are tuned；
Control instruction is received from central processing module by UART interface, and according to described control instruction pair
Described CDR data are demodulated, and then by described TS interface, the CDR data after demodulation are transferred to institute
State central processing module；
Described central processing module exports after processing the CDR data after demodulation.
Chinese Digital audio broadcasting CDR the most according to claim 1 receives the implementation method of terminal, and it is special
Levying and be, the process to the CDR data after demodulation of described central processing module includes:
CDR data after described demodulation are demultiplexed；
To the CDR decoding data after demultiplexing.
Chinese Digital audio broadcasting CDR the most according to claim 1 receives the implementation method of terminal, and it is special
Levy and be, also include:
Decoded CDR data are shown with visual form.
The implementation method of the reception terminal of Chinese Digital audio broadcasting CDR the most according to claim 1, its
It is characterised by, also includes:
Decoded CDR data are exported with audio form.
Chinese Digital audio broadcasting CDR the most according to claim 2 receives the implementation method of terminal, and it is special
Levy and be, also include:
Intermediate data in storage CDR data decoding procedure and decoded CDR data.
6. a Chinese Digital audio broadcasting CDR receives terminal, it is characterised in that including: antenna, tune
Humorous module, demodulation module, central processing module, UART Universal Asynchronous Receiver Transmitter UART interface and transport stream TS
Interface, wherein:
Described antenna is connected to described tuner module, for receiving CDR data the CDR number that will receive
According to being transferred to described tuner module；
Described tuner module is connected to described demodulation module, for described CDR data are tuned and incite somebody to action
It is sent to described demodulation module；
Described demodulation module is connected to described central authorities by described UART interface and described TS interface and processes mould
Block, for receiving control instruction by described UART interface from described central processing module, and according to institute
State control instruction described CDR data are demodulated, then by described TS interface by the CDR after demodulation
Data are transferred to described central processing module；
Described central processing module exports after processing the CDR data after demodulation.
Chinese Digital audio broadcasting CDR the most according to claim 6 receives terminal, it is characterised in that institute
State central processing module to include:
Demultiplexing module, for demultiplexing the CDR data after described demodulation；
Decoder module, it is connected to described demultiplexing module, for carrying out the CDR data after demultiplexing
Export after decoding.
Chinese Digital audio broadcasting CDR the most according to claim 6 receives terminal, it is characterised in that also
Including:
Display module, it is connected with described central processing module, for by decoded CDR data with
Visual form shows.
Chinese Digital audio broadcasting CDR the most according to claim 6 receives terminal, it is characterised in that also
Including:
Audio-frequency module, it is connected with described central processing module, for by decoded CDR data with
Audio form exports.
The reception terminal of Chinese Digital audio broadcasting CDR the most according to claim 7, it is characterised in that
Also including: memory module, it is connected with described central processing module, is used for storing the decoding of CDR data
During intermediate data and decoded CDR data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417270.1A CN105915306A (en) | 2016-06-14 | 2016-06-14 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417270.1A CN105915306A (en) | 2016-06-14 | 2016-06-14 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
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| CN105915306A true CN105915306A (en) | 2016-08-31 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610417270.1A Pending CN105915306A (en) | 2016-06-14 | 2016-06-14 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070470A (en) * | 2017-03-03 | 2017-08-18 | 北京海尔集成电路设计有限公司 | A kind of CDR data output circuits and data output method |
| CN107425933A (en) * | 2017-03-03 | 2017-12-01 | 北京海尔集成电路设计有限公司 | A kind of CDR terminal devices using IIC communications protocol |
| CN107454439A (en) * | 2017-09-04 | 2017-12-08 | 成都德芯数字科技股份有限公司 | Information carrying means, method, information processing system and method |
| CN107454440A (en) * | 2017-09-04 | 2017-12-08 | 成都德芯数字科技股份有限公司 | Graph text information processing system and method |
| CN107547156A (en) * | 2017-09-04 | 2018-01-05 | 成都德芯数字科技股份有限公司 | Information transfer adaptation method, device and CDR broadcast transmission systems |
| CN107580189A (en) * | 2017-09-04 | 2018-01-12 | 成都德芯数字科技股份有限公司 | Information carrying means, system and information transferring method |
| CN107645350A (en) * | 2017-09-15 | 2018-01-30 | 成都德芯数字科技股份有限公司 | Audio frequency broadcast system and method |
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Application publication date: 20160831 |