CN106411434A - Broadcasting method and device and FM radio - Google Patents
Broadcasting method and device and FM radio Download PDFInfo
- Publication number
- CN106411434A CN106411434A CN201610861102.1A CN201610861102A CN106411434A CN 106411434 A CN106411434 A CN 106411434A CN 201610861102 A CN201610861102 A CN 201610861102A CN 106411434 A CN106411434 A CN 106411434A
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- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- 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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention discloses a broadcasting method. The method comprises the following steps: S100, receiving an FM signal, S200, judging whether the received FM signal satisfies a preset playing quality condition; if the received FM signal satisfies the preset playing quality condition, executing the step S400; otherwise, executing the next step; S300, processing the FM signal so that the FM signal satisfies the preset playing quality condition; and S400, demodulating the FM signal processed in the step S300 to acquire an audio signal, and playing the audio signal. The FM signal unsatisfying the preset playing quality condition is secondarily processed by use of the method disclosed by the invention so as to maintain the continuity of the frequency band in process, the current signal quality is guaranteed, the deficiency of the current technology application is filled, the condition that some wonderful program cannot be listened when the program playing terminal enters the signal weak environment and a signal shielding zone in the daily FM listening process is solved.
Description
Technical field
The present invention relates to wireless communication field, more particularly, to a kind of broadcasting method and device and FM radio.
Background technology
At present, in large- and-medium size cities, car owners get more and more, in order to dismiss the boring time generally in road, substantially
On all can accompany with FM radio, but be reinforced concrete structure in city, add building, in floor the shielding of reinforcing bar make
With, signal is not fine, particularly when vehicle travels to portion's interference and hinders obvious region, such as underground garage etc., just
Situation that signal be wholly absent occurs, once enter the highlight originally listened in this region all can be subject to greatly
Impact even cannot continue to listen at all, between this awkward situation, the time does not have good method to be broken through yet
This bottleneck and the generation evading this situation completely, intelligence is compensated and lifting means itself property using certain device
Energy.
The strategy taken for this problem in existing relevant programme at present is only for：Compensating carrier frequency error it
Method, device are carrying out making up the signal of script normal transmission, and carry out gain voltage process by resonant circuit.Existing
The implementation method similar technique application compensating with FM weak signal state has following patent formula：1st, application number/patent No.：
The patent of TW086106808, supplies device, method and the manufacture thing of carrier frequency compensation, in order to mend in a frequency modulation radio motor
Repay method, device and the manufacture thing of carrier frequency error：One FM signal is received by an antenna, and this FM signal is supplied to connects
Receive device.Receptor adopts this FM signal in carrier frequency, and exports a fundamental frequency signal.Then this fundamental frequency signal is through a DSP
Process, and compensating and decoding to produce the data stream that a microprocessor supplies a master device of carrier frequency is provided.This frequency modulation carries
Wave frequency and the DC bias level that fundamental frequency signal can be moved in order to demodulate the difference of the frequency of this FM signal.DSP connects using one
The offset received compensates this difference on the frequency, and it is applied in the sample of signal that each receives, and is intended to the money being transmitted in transmission
Material is to be supplied to DSP by this master device through a microprocessor.This DSP provides coding and the carrier frequency compensation of data, to provide
One fundamental frequency signal gives an emitter, and this fundamental frequency signal of modulation, to produce a FM signal in required carrier frequency.This institute
The carrier being frequency modulated frequency of need and the difference in order to the frequency of modulation fundamental frequency signal can produce error in receiver system.DSP then makes
Compensate this difference on the frequency with a transmission offset, and it is put in the sample of signal of each coding.2nd, application number/patent No.：
TW090113156, FM signal sends out shake circuit and modulation stratum correction method, discloses a kind of FM signal and sends out the circuit that shakes, its feature：Though
In resonant circuit (resonance circuit) using the variable capacitance diode (diode) tilting junction junction in echelon, make
Modulation degree during FM modulation is not changed by a vibration frequency, and makes its circuit amass body with common IC fabrication schedule；
The solution of above problem is：Sending out of disobeying the control voltage of variable capacitance diode being applied to resonant circuit and change is shaken
Frequency, for making modulation degree during FM modulation remain certain, can make, from aforementioned control voltage, the variable gain that gain (gain) changes
Amplifier, after modulating signal being amplified and sets the stratum of modulating signal, overlapping with aforementioned control voltage be applied to aforementioned variable
The result of electric capacity diode, obtains certain modulation degree from drive circuit (drivercircuit) not by aforementioned control voltage
FM modulating signal；Amass body change thus, it is possible to common IC fabrication schedule, FM signal be sent out the circuit that shakes.
In the FM signal amplifier method that there is now, it is only limitted to increase oscillating circuit, puts up in original basis of signals
Greatly, when signal receive severe jamming and building obstacle lose serious in the case of, simple signal amplifier such as chicken ribs, no
Signal can really be realized and amplify compensation.And in the case that pickup electrode is weak, more cannot give audio quality for change.At present in this field
Also there is no the scheme that can really realize the compensation of FM signal lossless.
Content of the invention
For solving above-mentioned technical problem, the present invention provides a kind of broadcasting method and device and FM radio, using the teaching of the invention it is possible to provide
A kind of stably ensure quality broadcasting method, to be interfered and screening effect any FM transmission signal carry out secondary reinforcement,
Amplify, so as to keeping the seriality carrying out frequency range it is ensured that current signal quality.
The technical scheme that the present invention provides is as follows：
The invention discloses a kind of broadcasting method, including step：S100, reception FM signal；The described FM that S200, disconnecting are received
Whether signal meets default play quality condition；If so, execution step S400；Otherwise, execute next step；S300, to described FM
Signal is processed so that described FM signal meets described default play quality condition；After S400, demodulation step S300 are processed
Described FM signal obtains audio signal, and plays described audio signal.
The present invention carries out after-treatment to the FM signal being unsatisfactory for default play quality condition, to carry out to holding
The seriality of frequency range, it is ensured that current signal quality, has filled up the disappearance of this technology application current, the daily FM of solution listens to process
In, often it is directed to the weaker environment of entering signal and blind zone when some highlights and program are play, cause to listen to
Situation.
It is further preferred that " judging whether the described FM signal receiving meets default play quality in described step S200
Condition " further includes step：201st, the signal quality of the described FM signal that monitoring receives, according to the signal matter of described FM signal
Amount generates signal quality instruction；202nd, judge that described signal quality indicates whether less than preset standard value, if so, then described FM believes
Number it is unsatisfactory for default play quality condition；Otherwise, described FM signal meets default play quality condition.
The present invention, by carrying out quality testing to the FM signal receiving, enters for signal quality substandard FM signal
Row is processed, and solves in existing FM signal amplifier method, is only limitted to increase oscillating circuit, gets in original basis of signals
Amplify, when signal receive severe jamming and building obstacle lose serious in the case of, simple signal amplifier such as chicken ribs,
Signal can not really be realized amplify compensating, and in the case that pickup electrode is weak, more cannot give the technical problem of audio quality for change.
It is further preferred that described step S300 " is processed to described FM signal so that described FM signal satisfaction is described
Default play quality condition " further includes step：S301, the described FM signal of amplification；S302, to step S301 amplify after institute
State FM signal to be strengthened, until the signal quality instruction of described FM signal reaches preset standard value.
The FM signal quality of the continuous wave signal that present invention monitoring receives, is therefrom generated signal quality instruction, is sentenced with this
Break the need of carrying out signal amplification and second compensation process, if the signal quality instruction of FM signal is less than preset standard value, will
Amplify secondary to the FM signal being received simulates reinforcement process, and demodulated can the grade of the FM signal after process realizes lossless audio
Quality is play, and can thoroughly solve the situation of interruption program in signal FM playing process.
It is further preferred that described step S100 also includes：Deposit the described FM signal receiving.
The invention also discloses a kind of broadcaster, including：Receiver module, for receiving FM signal；Conditional judgment module,
Whether the described FM signal for judging to receive meets default play quality condition；Signal processing module, for believing to described FM
Number processed so that described FM signal meets described default play quality condition；Demodulation playing module, for demodulating described FM
Signal obtains audio signal and plays.
It is further preferred that described conditional judgment module further includes：Quality monitoring submodule, receives for monitoring
The signal quality of described FM signal；Signal quality instruction generates submodule, generates for the signal quality according to described FM signal
Signal quality indicates；First judging submodule, for judging that described signal quality indicates whether less than preset standard value；When described
When first judging submodule judges described signal quality instruction less than preset standard value, then described FM signal is unsatisfactory for default broadcasting
Quality requirements.
It is further preferred that described signal processing module further includes：Signal amplifies submodule, for amplifying described FM
Signal；Signal strengthens submodule, for strengthening to the described FM signal after amplifying, until the signal quality of described FM signal
Instruction reaches preset standard value.
It is further preferred that also including：Registration module, for depositing the described FM signal receiving.
The invention also discloses a kind of FM radio, broadcasted using arbitrary above-mentioned broadcasting method.
Compared with prior art, the present invention can bring at least one beneficial effect：
1st, the present invention using more effectively, easily signal compensation mode, more targetedly；
2. the present invention avoids the need for individually adding auxiliary device triviality；
3. invention enhances FM signal strengthen, the technology sense of Compensating Control；
4. the present invention can more thoroughly solve FM signal and be subject to objective environment interference problem.
Brief description
Below by the way of clearly understandable, preferred implementation is described with reference to the drawings, the present invention is given furtherly
Bright.
Fig. 1 is a kind of key step schematic diagram of broadcasting method of the present invention；
Fig. 2 is a kind of entire protocol schematic diagram of broadcasting method of the present invention；
Fig. 3 is a kind of flow chart of broadcasting method of the present invention；
Fig. 4 is a kind of main composition schematic diagram of broadcaster of the present invention；
Fig. 5 is fully composed schematic diagram for a kind of broadcaster of the present invention；
Fig. 6 is a kind of radio frequency testing circuit schematic diagram of broadcaster of the present invention.
Drawing reference numeral explanation：
100th, receiver module, 200, conditional judgment module, 201, quality monitoring submodule, 202, signal quality instruction generates
Submodule, the 203, first judging submodule, 300, signal processing module, 301, signal amplify submodule, 302, signal strengthen son
Module, 400, demodulation playing module, 500, registration module.
Specific embodiment
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, brief description will be compareed below
The specific embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
For making simplified form, each in figure only schematically show part related to the present invention, and they do not represent
It is as the practical structures of product.In addition, so that simplified form readily appreciates, there is identical structure or function in some in figures
Part, only symbolically depicts one of, or has only marked one of.Herein, " one " not only represents
" only this " is it is also possible to represent the situation of " more than one ".
Fig. 1 is a kind of key step schematic diagram of broadcasting method of the present invention, as shown in figure 1, a kind of broadcasting method, including step
Suddenly：S100, reception FM signal；Whether the described FM signal that S200, disconnecting are received meets default play quality condition；If so, execute
Step S400；Otherwise, execute next step；S300, described FM signal is processed so that described FM signal meet described default
Play quality condition；Described FM signal after S400, demodulation step S300 are processed obtains audio signal, and plays described audio frequency letter
Number.
Specifically, FM can be closely connected one with sound wave, radio wave, these concepts of carrier wave in transmission record principle
Rise, the frequency range of the sound wave that human ear can be heard is probably in 20Hz-20-000Hz.Propagation attenuation is very big in atmosphere for sound wave, passes
Defeated distance is close, is very limited；The principle of radio wave is, the strong and weak change of electric current in conductor can produce radio wave,
The frequency of radio wave is significantly larger than the frequency range that human ear can be heard, the medium of propagation is electromagnetic field, and transmission range is permissible
Far；In order that sound can pass to farther place, acoustic signals are just allowed to have costed radio wave signal this " high ferro ", this
" high ferro " is referred to as carrier wave.Acoustic signals want that becoming carrier wave has two ways, and one is amplitude modulation (AM), and another is exactly frequency modulation
(FM) carrier voltage amplitude is constant, and carrier wave instantaneous time frequency then changes with modulated signal rule.
FM transmitting substantially and to receive process described below：
Transmitting substantially process：Propagate in radiobroadcasting is acoustical signal, first has to station broadcast person's acoustical signal
Audio electrical signal is converted into by microphone, but audio signal frequency is relatively low does not utilize long-distance transmissions, therefore also by voiceband telecommunication
Number it is downloaded on high frequency carrier electric current by " high frequency generator ", transmitted signals in the air using antenna.
Receive substantially process：The reception antenna of radio receiver module and equipment receives aerial radio wave, and cymoscope is by height
Signal demodulation after putting is reduced to sound signal, then amplifies output to speaker through amplifirer, is reduced to broadcast sounds content.
The present invention is directed on the basis of FM original signal condition of acceptance when being subject to objective environment to disturb, and broadcasts to being unsatisfactory for presetting
The FM signal putting quality requirements carries out after-treatment, and prominent guarantee transmission signal strength simultaneously simulates reinforcement, so as to holding
Carry out the seriality of frequency range it is ensured that the implementation method of FM audio quality, disappearance, the solution of having filled up this technology application current are daily
During FM listens to, when being often directed to some highlights and program broadcasting, the weaker environment of entering signal and blind zone, cause
Situation about cannot listen to.
Fig. 2 is a kind of entire protocol schematic diagram of broadcasting method of the present invention.As shown in Figure 2 it is preferred that described step S200
In " judge receive described FM signal whether meet default play quality condition " further include step：201st, monitoring receives
The signal quality of described FM signal, the signal quality according to described FM signal generates signal quality instruction；202nd, judge described letter
Number quality indicates whether less than preset standard value, and if so, then described FM signal is unsatisfactory for default play quality condition；Otherwise, institute
State FM signal and meet default play quality condition.
The present invention, by carrying out quality testing to the FM signal receiving, enters for signal quality substandard FM signal
Row is processed, and solves in existing FM signal amplifier method, is only limitted to increase oscillating circuit, gets in original basis of signals
Amplify, when signal receive severe jamming and building obstacle lose serious in the case of, simple signal amplifier such as chicken ribs,
Signal can not really be realized amplify compensating, and in the case that pickup electrode is weak, more cannot give the technical problem of audio quality for change.
Preferably, as shown in Fig. 2 described step S300 " is processed to described FM signal so that described FM signal meets
Described default play quality condition " further includes step：S301, the described FM signal of amplification；S302, to step S301 amplify after
Described FM signal strengthened, until described FM signal signal quality instruction reach preset standard value.
The FM signal quality of the continuous wave signal that present invention monitoring receives, is therefrom generated signal quality instruction, is sentenced with this
Break the need of carrying out signal amplification and second compensation process, if the signal quality instruction of FM signal is less than preset standard value, will
Amplify secondary to the FM signal being received simulates reinforcement process, and demodulated can the grade of the FM signal after process realizes lossless audio
Quality is play, and can thoroughly solve the situation of interruption program in signal FM playing process.
Preferably, described step S100 also includes：Deposit the described FM signal receiving.
Fig. 3 is a kind of flow chart of broadcasting method of the present invention.As shown in figure 3, the workflow of the present invention is：
31st, receive FM signal；
32nd, the signal quality of the described FM signal that monitoring receives, the signal quality according to described FM signal generates signal matter
Amount instruction.
33rd, judge that described signal quality indicates whether less than preset standard value, if so, then described FM signal is unsatisfactory for presetting
Play quality condition, executes next step；Otherwise, described FM signal meets default play quality condition, execution step 35.
34th, amplify described FM signal, the described FM signal after amplifying is strengthened, until the signal matter of described FM signal
Amount instruction reaches preset standard value.
35th, the described FM signal after demodulation process obtains audio signal, and plays described audio signal.
Fig. 4 is a kind of main composition schematic diagram of broadcaster of the present invention.As shown in figure 4, a kind of broadcaster, including：
Receiver module 100, for receiving FM signal；Conditional judgment module 200, it is pre- whether the described FM signal for judging to receive meets
If play quality condition；Signal processing module 202, for being processed to described FM signal so that described FM signal meets institute
State default play quality condition；Mould 400 is play in demodulation, obtains audio signal and plays for demodulating described FM signal.
The present invention is directed on the basis of FM original signal condition of acceptance when being subject to objective environment to disturb, and broadcasts to being unsatisfactory for presetting
The FM signal putting quality requirements carries out after-treatment, and prominent guarantee transmission signal strength simultaneously simulates reinforcement, so as to holding
Carry out the seriality of frequency range it is ensured that the implementation method of FM audio quality, disappearance, the solution of having filled up this technology application current are daily
During FM listens to, when being often directed to some highlights and program broadcasting, the weaker environment of entering signal and blind zone, cause
Situation about cannot listen to.
Fig. 5 is fully composed schematic diagram for a kind of broadcaster of the present invention.As a specific embodiment of the present invention, such as
It is preferred that described conditional judgment module 200 further includes shown in Fig. 5：Quality monitoring submodule 201, receives for monitoring
The signal quality of described FM signal；Signal quality instruction generates submodule 202, for the signal quality life according to described FM signal
Become signal quality instruction；First judging submodule 203, for judging that described signal quality indicates whether less than preset standard value；
When described first judging submodule 203 judges described signal quality instruction less than preset standard value, then described FM signal is discontented with
The default play quality condition of foot.
Specifically, the present invention obtains, by setting up a radio frequency testing circuit, the FM signal receiving, and therefrom arranges one
Individual monitoring point, for obtain FM signal and to obtain FM signal carry out Quality estimation.Fig. 6 is a kind of broadcaster of the present invention
Radio frequency testing circuit schematic diagram, wherein A point is FM signal input point, and B point is monitoring point.
Preferably, as shown in figure 5, described signal processing module further includes：Signal amplifies submodule 301, is used for putting
Described greatly FM signal；Signal strengthens submodule 302, for strengthening to the described FM signal after amplifying, until described FM letter
Number signal quality instruction reach preset standard value.
Preferably, as shown in figure 5, a kind of broadcaster also includes registration module 500, for depositing the described FM receiving
Signal.
The invention also discloses a kind of FM radio, broadcasted using arbitrary above-mentioned broadcasting method.
It should be noted that the content such as the information exchange between each module, implementation procedure and said method are real in this device
Apply example and be based on same design, particular content can be found in the narration in the inventive method embodiment, and here is omitted.
It should be noted that above-described embodiment all can independent assortment as needed.The above is only the preferred of the present invention
Embodiment it is noted that for those skilled in the art, in the premise without departing from the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of broadcasting method is it is characterised in that include step：
S100, reception FM signal；
Whether the described FM signal that S200, disconnecting are received meets default play quality condition；If so, execution step S400；Otherwise, hold
Row next step；
S300, described FM signal is processed so that described FM signal meets described default play quality condition；
Described FM signal after S400, demodulation step S300 are processed obtains audio signal, and plays described audio signal.
2. broadcasting method as claimed in claim 1 is it is characterised in that " judge the described FM letter receiving in described step S200
Number whether meet default play quality condition " further include step：
201st, the signal quality of the described FM signal that monitoring receives, the signal quality according to described FM signal generates signal quality and refers to
Show；
202nd, judge that described signal quality indicates whether less than preset standard value, if so, then described FM signal is unsatisfactory for default broadcasting
Put quality requirements；Otherwise, described FM signal meets default play quality condition.
3. broadcasting method as claimed in claim 2 it is characterised in that described step S300 " described FM signal is processed,
Described FM signal is made to meet described default play quality condition " further include step：
S301, the described FM signal of amplification；
S302, to step S301 amplify after described FM signal strengthen, until described FM signal signal quality instruction reach
To preset standard value.
4. broadcasting method as claimed in claim 1 is it is characterised in that described step S100 also includes：Deposit the institute receiving
State FM signal.
5. a kind of broadcaster is it is characterised in that include：
Receiver module, for receiving FM signal；
Conditional judgment module, whether the described FM signal for judging to receive meets default play quality condition；
Signal processing module, for being processed to described FM signal so that described FM signal meets described default play quality
Condition；
Demodulation playing module, obtains audio signal and plays for demodulating described FM signal.
6. broadcaster as claimed in claim 5 is it is characterised in that described conditional judgment module further includes：
Quality monitoring submodule, the signal quality of the described FM signal receiving for monitoring；
Signal quality instruction generates submodule, generates signal quality instruction for the signal quality according to described FM signal；
First judging submodule, for judging that described signal quality indicates whether less than preset standard value；When the described first judgement
When submodule judges described signal quality instruction less than preset standard value, then described FM signal is unsatisfactory for default play quality bar
Part.
7. broadcaster as claimed in claim 5 is it is characterised in that described signal processing module further includes：
Signal amplifies submodule, for amplifying described FM signal；
Signal strengthens submodule, for strengthening to the described FM signal after amplifying, until the signal quality of described FM signal
Instruction reaches preset standard value.
8. broadcaster as claimed in claim 5 is it is characterised in that also include：
Registration module, for depositing the described FM signal receiving.
9. a kind of FM radio is it is characterised in that broadcasted using the arbitrary described broadcasting method of the claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861102.1A CN106411434A (en) | 2016-09-28 | 2016-09-28 | Broadcasting method and device and FM radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861102.1A CN106411434A (en) | 2016-09-28 | 2016-09-28 | Broadcasting method and device and FM radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106411434A true CN106411434A (en) | 2017-02-15 |
Family
ID=58015635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610861102.1A Pending CN106411434A (en) | 2016-09-28 | 2016-09-28 | Broadcasting method and device and FM radio |
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