CN107070470A - A kind of CDR data output circuits and data output method - Google Patents
A kind of CDR data output circuits and data output method Download PDFInfo
- Publication number
- CN107070470A CN107070470A CN201710123770.9A CN201710123770A CN107070470A CN 107070470 A CN107070470 A CN 107070470A CN 201710123770 A CN201710123770 A CN 201710123770A CN 107070470 A CN107070470 A CN 107070470A
- Authority
- CN
- China
- Prior art keywords
- data output
- demodulation
- chip
- audio
- cdr
- 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
Links
Classifications
-
- 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
Abstract
The invention provides a kind of CDR data output circuits and data output method, wherein CDR data output circuits include antenna, for the signal that antenna is received is tuned tuner, for the signal after tuning is demodulated demodulation chip, for the data obtained after demodulation to be decoded to obtain the main control chip of audio/video/picture；Wherein described antenna connects demodulation chip by tuner, and the demodulation chip between following at least one agreement and main control chip by being communicated：SPI protocol, I2C agreements, UART protocol, TS agreements.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of CDR data output circuits and data output method.
Background technology
CDR is as a kind of digital broadcast transmission modes of the and FM with frequency, with FM analog broadcastings, DTMB terrestrial DTVs
Broadcast, which is compared, many unrivaled advantages:Compared with FM, CDR transferring contents can also be transmitted in addition to audio video,
The contents such as picture；Compared with DTMB ground digital television broadcasts, CDR front end emission scrap build cost is low, coverage effect
It is good.
Had the advantage that just because of CDR, therefore have become the multimedia broadcasting attracted most attention in addition to TV.
Existing CDR technologies, which are needed, powerful matches somebody with somebody locking terminal --- CDR receivers；CDR receivers must have stronger
Disposal ability, and with powerful main control chip.Existing CDR receivers design is not reasonable, causes CDR receivers
Circuit it is complicated and inefficient.Lack suitable number between the demodulation chip and main control chip of existing CDR receivers simultaneously
According to interface.
The content of the invention
Cause the circuit complexity and solution of CDR receivers for the design of CDR receivers present in prior art is not reasonable
The problem of lacking suitable data-interface between aligning piece and main control chip, the embodiment of the present invention proposes a kind of design more
Rational CDR data output circuits and data output method.
To achieve these goals, the embodiment of the present invention proposes a kind of CDR data output circuits, including antenna, is used for
The tuner that is tuned to the signal that antenna is received, for the signal after tuning is demodulated demodulation chip, be used for
The data obtained after demodulation are decoded to obtain the main control chip of audio/video/picture；Wherein described antenna is by adjusting
Humorous device connects demodulation chip, and the demodulation chip between following at least one agreement and main control chip by being communicated：
SPI protocol, I2C agreements, UART protocol, TS agreements.
Wherein, in addition to display device, audio output device；Main control chip connects the display device, audio output dress
Put to be sent to display device, audio after the audio/video obtained after decoding/picture is generated into screen display or voice data
Output device is played out.
Wherein, in addition to storage device, the main control chip is also connected with storage device to obtain after demodulation chip is demodulated
Audio, video, image data cached.
Wherein, the storage device is Nand Flash or Nor Flash.
Wherein, the demodulation chip is FM/CDR demodulation chips.
Wherein, the display device is LCD display screen.
Wherein, the audio output device is loudspeaker.
Meanwhile, the embodiment of the present invention also proposed a kind of number of the CDR data output circuits using as described in preceding any one
According to output intent, including：
Antenna is received after signal, is tuned by tuner, and the signal after tuning is carried out by demodulation chip
Demodulation, is then decoded the data obtained after demodulation by main control chip to obtain audio/video/picture；It is wherein described
Demodulation chip between following at least one agreement and main control chip by being communicated：SPI protocol, I2C agreements, UART associations
View, TS agreements.
Wherein, this method also includes：Main control chip by the audio/video obtained after decoding/picture generate screen display or
Display device, audio output device is sent to after voice data to play out.
Wherein, this method also includes：The audio that is obtained after demodulation chip is demodulated, video, image data are sent to storage
Device is cached.
The above-mentioned technical proposal of the present invention has the beneficial effect that：A kind of CDR data outputs electricity is proposed in such scheme
Road and data output method, being capable of SPI protocol, I2C agreements, UART protocol, TS associations between its demodulation chip and main control chip
View at least one of communicated, it can simplify the structure complexity of CDR receivers.
Brief description of the drawings
Fig. 1 is the circuit diagram of the CDR data output circuits of the embodiment of the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The embodiment of the present invention proposes a kind of CDR data output circuits as shown in Figure 1, including antenna, tuner, solution
Aligning piece, main control chip, storage device, display device, audio output device；Wherein described antenna is connected by tuner and solved
Aligning piece, and the demodulation chip between following at least one agreement and main control chip by being communicated：SPI protocol,
I2C agreements, UART protocol, TS agreements.As shown in Figure 1, the main control chip is also connected with display device, audio output device, with
The data such as the audio, video, the picture that are obtained after demodulation chip is demodulated are exported by display device, audio output device.As schemed
Shown in 1, main control chip is also connected with storage device and entered with data such as the audio obtained after demodulation chip is demodulated, video, pictures
Row caching.Wherein, the main control chip is used for the decoding for carrying out audio/video/picture, and generates display data on the screen and/or sound
Sound data, are sent to display device and/or audio output device is shown.Wherein, the demodulation chip is that FM/CDR solves aligning
Piece；The display device is LCD display screen；The audio output device is loudspeaker.Wherein, the storage device is Nand Flash.
In embodiments of the present invention, the demodulation chip between following at least one agreement and main control chip by carrying out
Communication：SPI interface agreement, I2C interface protocols, UART interface agreement, TS interface protocols.
Wherein, SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) interface protocol is a kind of synchronous
Serial Peripheral Interface (SPI), it can make MCU be communicated with exchanging information in a serial fashion with various ancillary equipment.SPI has three
Register is respectively：Control register SPCR, status register SPSR, data register SPDR.Ancillary equipment includes
FLASHRAM, network controller, LCD display drivers, A/D converter and MCU etc..Spi bus system can directly with each factory
The multiple standards peripheral components direct interface of family's production, the interface is typically using 4 lines：Serial time clock line (SCLK), main frame are defeated
Enter/slave output data line MISO, main frame output/slave input data line MOSI and the effective slave selection line NSS of low level
(the SPI interface chip having does not have main frame output/slave input data line with interrupt signal line INT, the SPI interface chip having
MOSI)。
Wherein, I2C (Inter-Integrated Circuit) bus is the twin wire string developed by PHILIPS companies
Row bus, for connecting microcontroller and its ancillary equipment；It is a kind of widely used bus mark in microelectronics Control on Communication field
It is accurate.It is a kind of special shape of synchronous communication, few with interface line, and control mode is simple, and device packing forms are small, communication
The advantages of speed is higher.I2C buses support any IC production technologies (CMOS, ambipolar).By serial data (SDA) line and
Serial clock (SCL) line transmission information between the device of bus is connected to.Each device has a unique Address Recognition
(either microcontroller --- MCU, lcd driver, memory or keyboard interface), and can serve as a transmitter
Or receiver (being determined by the function of device).Lcd driver can only be as receiver, and then can both receive can for memory
To send data.In addition to transmitters and receivers, device perform data transfer when can also be counted as main frame or from
Machine.Main frame is the data transfer of initialization bus and generation allow transmission clock signal device.Now, it is any to be addressed
Device be considered as slave.
Wherein, TS (Transport Stream) agreement is that Japanese high-definition camera shoots the lower encapsulation format carried out, entirely
Referred to as MPEG2-TS, is characterized in can independently decoding since any fragment of video flowing.
Meanwhile, the embodiment of the present invention also proposed a kind of number of the CDR data output circuits using as described in preceding any one
According to output intent, including：
Antenna is received after signal, is tuned by tuner, and the signal after tuning is carried out by demodulation chip
Demodulation, is then decoded the data obtained after demodulation by main control chip to obtain audio/video/picture；It is wherein described
Demodulation chip between following at least one agreement and main control chip by being communicated：SPI protocol, I2C agreements, UART associations
View, TS agreements.
Wherein, this method also includes：Main control chip by the audio/video obtained after decoding/picture generate screen display or
Display device, audio output device is sent to after voice data to play out.
Wherein, this method also includes：The audio that is obtained after demodulation chip is demodulated, video, image data are sent to storage
Device is cached.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of CDR data output circuits, it is characterised in that including antenna, for being tuned to the signal that antenna is received
Tuner, for the signal after tuning is demodulated demodulation chip, for the data obtained after demodulation to be decoded
To obtain the main control chip of audio/video/picture；Wherein described antenna connects demodulation chip, and the demodulation by tuner
Chip between following at least one agreement and main control chip by being communicated：SPI protocol, I2C agreements, UART protocol, TS
Agreement.
2. CDR data output circuits according to claim 1, it is characterised in that also filled including display device, audio output
Put；Main control chip connects the display device, audio output device to shield the audio/video obtained after decoding/picture generation
Display device, audio output device are sent to after curtain display or voice data to play out.
3. CDR data output circuits according to claim 1, it is characterised in that also including storage device, the master control core
Piece is also connected with storage device and cached with the audio obtained after demodulation chip is demodulated, video, image data.
4. CDR data output circuits according to claim 3, it is characterised in that the storage device is Nand Flash
Or Nor Flash.
5. CDR data output circuits according to claim 1, it is characterised in that the demodulation chip demodulates for FM/CDR
Chip.
6. CDR data output circuits according to claim 1, it is characterised in that the display device is LCD display
Curtain.
7. CDR data output circuits according to claim 1, it is characterised in that the audio output device is loudspeaker.
8. a kind of data output method of CDR data output circuits using as described in claim any one of 1-7, its feature exists
In, including：
Antenna is received after signal, is tuned by tuner, and the signal after tuning is demodulated by demodulation chip,
Then the data obtained after demodulation are decoded by main control chip to obtain audio/video/picture；Wherein described demodulation core
Piece between following at least one agreement and main control chip by being communicated：SPI protocol, I2C agreements, UART protocol, TS associations
View.
9. according to data output method as claimed in claim 8, it is characterised in that also include：Main control chip will be obtained after decoding
Display device, audio output device are sent to after the audio/video obtained/picture generation screen display or voice data to be broadcast
Put.
10. according to data output method as claimed in claim 8, it is characterised in that also include：Obtained after demodulation chip is demodulated
Audio, video, image data be sent to storage device and cached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123770.9A CN107070470A (en) | 2017-03-03 | 2017-03-03 | A kind of CDR data output circuits and data output method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123770.9A CN107070470A (en) | 2017-03-03 | 2017-03-03 | A kind of CDR data output circuits and data output method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107070470A true CN107070470A (en) | 2017-08-18 |
Family
ID=59621518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710123770.9A Pending CN107070470A (en) | 2017-03-03 | 2017-03-03 | A kind of CDR data output circuits and data output method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107070470A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7877019B2 (en) * | 2002-10-16 | 2011-01-25 | Tyco Electronics Subsea Communications Llc | Optical receiver including a system and method of controlling gain of an optical amplifier |
| CN105072265A (en) * | 2015-07-29 | 2015-11-18 | 北京海尔集成电路设计有限公司 | Mobile terminal with China digital radio broadcasting (CDR) receiving function |
| CN105450952A (en) * | 2015-12-14 | 2016-03-30 | 北京海尔集成电路设计有限公司 | FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof |
| CN105515700A (en) * | 2015-12-14 | 2016-04-20 | 北京海尔集成电路设计有限公司 | Terminal with FM (frequency modulation) and CDR (China Digital Radio) receiving functions and implementing method thereof |
| CN205232333U (en) * | 2015-12-14 | 2016-05-11 | 北京海尔集成电路设计有限公司 | Possesses terminal that FM, CDR and DTMB received function |
| CN205283519U (en) * | 2015-12-14 | 2016-06-01 | 北京海尔集成电路设计有限公司 | Possesses terminal that FM and CDR received function |
| CN205283555U (en) * | 2015-12-22 | 2016-06-01 | 北京海尔集成电路设计有限公司 | FM and CDR receiving terminal with external memory interface |
| CN205510239U (en) * | 2015-12-22 | 2016-08-24 | 北京海尔集成电路设计有限公司 | FM, CDR and DTMB receiving terminal with external memory interface |
| CN105915306A (en) * | 2016-06-14 | 2016-08-31 | 北京海尔集成电路设计有限公司 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
| CN205992905U (en) * | 2016-06-14 | 2017-03-01 | 北京海尔集成电路设计有限公司 | A kind of Chinese Digital audio broadcasting CDR receiving terminal |
| CN206790650U (en) * | 2017-03-03 | 2017-12-22 | 北京海尔集成电路设计有限公司 | A kind of CDR data output circuits |
-
2017
- 2017-03-03 CN CN201710123770.9A patent/CN107070470A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7877019B2 (en) * | 2002-10-16 | 2011-01-25 | Tyco Electronics Subsea Communications Llc | Optical receiver including a system and method of controlling gain of an optical amplifier |
| CN105072265A (en) * | 2015-07-29 | 2015-11-18 | 北京海尔集成电路设计有限公司 | Mobile terminal with China digital radio broadcasting (CDR) receiving function |
| CN105450952A (en) * | 2015-12-14 | 2016-03-30 | 北京海尔集成电路设计有限公司 | FM (Frequency Modulation), CDR (China Digital Radio) and DTMB (Digital Television Terrestrial Multimedia Broadcasting) receiving terminal and implementing method thereof |
| CN105515700A (en) * | 2015-12-14 | 2016-04-20 | 北京海尔集成电路设计有限公司 | Terminal with FM (frequency modulation) and CDR (China Digital Radio) receiving functions and implementing method thereof |
| CN205232333U (en) * | 2015-12-14 | 2016-05-11 | 北京海尔集成电路设计有限公司 | Possesses terminal that FM, CDR and DTMB received function |
| CN205283519U (en) * | 2015-12-14 | 2016-06-01 | 北京海尔集成电路设计有限公司 | Possesses terminal that FM and CDR received function |
| CN205283555U (en) * | 2015-12-22 | 2016-06-01 | 北京海尔集成电路设计有限公司 | FM and CDR receiving terminal with external memory interface |
| CN205510239U (en) * | 2015-12-22 | 2016-08-24 | 北京海尔集成电路设计有限公司 | FM, CDR and DTMB receiving terminal with external memory interface |
| CN105915306A (en) * | 2016-06-14 | 2016-08-31 | 北京海尔集成电路设计有限公司 | China digital radio CDR receiving terminal and realization method of the receiving terminal |
| CN205992905U (en) * | 2016-06-14 | 2017-03-01 | 北京海尔集成电路设计有限公司 | A kind of Chinese Digital audio broadcasting CDR receiving terminal |
| CN206790650U (en) * | 2017-03-03 | 2017-12-22 | 北京海尔集成电路设计有限公司 | A kind of CDR data output circuits |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107070470A (en) | A kind of CDR data output circuits and data output method | |
| WO2005013112A1 (en) | Universal bidirectional serial data transport interface and its data stransport method | |
| KR20070063474A (en) | Wireless mobile device | |
| JPH11122550A (en) | Digital broadcast reception system in information processer | |
| US7268831B2 (en) | Method and apparatus for isolating IIC bus noise from a tuner in a television receiver | |
| CN206790650U (en) | A kind of CDR data output circuits | |
| CN1189033A (en) | Device and method for transmission | |
| JP2008242884A (en) | I2c bus control circuit | |
| TW200524419A (en) | Tuner module utilizing device-specific controller | |
| WO2018230348A1 (en) | Demodulation device, processing device, reception device and data processing method | |
| US7847866B2 (en) | Method and apparatus for isolating IIC bus noise from a tuner in a television receiver | |
| JP4627394B2 (en) | Method for forming a program guide and method for transmitting Internet content to a display device | |
| CN100473125C (en) | TV set for receiving digital signals and analog signals | |
| CN103237253B (en) | Compatible multiple audio-video signal interface also has the DVB-S Set Top Box of standby mode | |
| CN203313333U (en) | Digital television receiver compatible with multiple data connection interfaces | |
| US6603816B1 (en) | Receiver and receiving-decoding method | |
| CN207638801U (en) | It is a kind of to receive DVB-C and DTMB simple two-way signal set-top boxes simultaneously | |
| JP2003505942A (en) | Demodulator of multi-protocol receiver | |
| CN208112821U (en) | A kind of top box of digital machine and data transmission system | |
| EP1228636B1 (en) | Method and apparatus for isolating iic bus noise from a tuner in a television receiver | |
| WO2016141507A1 (en) | Signal display and output method, apparatus and system | |
| KR200385300Y1 (en) | Embedded Interactive DOCSIS Set-Top Gateway Module for a Digital Open Cable Broadcasting | |
| WO2022116810A1 (en) | Alp data packet processing method, storage medium, and electronic device | |
| CN203039823U (en) | STB (set top box) with wireless audio and video transmission | |
| KR100853153B1 (en) | A digital broadcasting receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
|
| RJ01 | Rejection of invention patent application after publication |