CN106788720A - A kind of mobile terminal and communication system - Google Patents
A kind of mobile terminal and communication system Download PDFInfo
- Publication number
- CN106788720A CN106788720A CN201610998051.7A CN201610998051A CN106788720A CN 106788720 A CN106788720 A CN 106788720A CN 201610998051 A CN201610998051 A CN 201610998051A CN 106788720 A CN106788720 A CN 106788720A
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- circuit
- signal
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- transceiver
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1143—Bidirectional transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
Abstract
The invention discloses a kind of mobile terminal and communication system, the mobile terminal includes first transceiver, the first signal processing circuit and secondary signal process circuit；First transceiver is connected with the first signal processing circuit and secondary signal process circuit respectively, for the first electric signal that the first signal processing circuit is produced being converted into the first visible light signal and being launched, for receiving the second visible light signal and being converted into the second electric signal and be transferred to secondary signal process circuit.In this way, the present invention can realize first transceiver simultaneously to the transmitting and reception of visible ray, so as to realize the visible ray duplex communication of transceiver.The mobile terminal also includes second transceiver simultaneously, and the second transceiver is used to be wirelessly transferred communication, therefore the present invention can also realize selecting different communication modes to be communicated according to user's request, so as to improve the convenience of telex network.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of mobile terminal and communication system.
Background technology
With it is current be wirelessly transferred communication compared with, it is seen that optic communication is had that communication speed is fast, safe, is set using many
It is standby the advantages of do not influence communication speed, therefore visible light communication will possess the very big market space in future.But current visible ray
Communication focuses primarily upon research visible light communication and sends, or visible light communication is received, and the visible of transceiver is simultaneously not implemented
Light duplex communication.
Have using voltage is low, low in energy consumption because of LED light source, long lifespan, many advantages, such as be easy to miniaturization, while LED light
Source has broader modulation bandwidth, can carry out switch switching with frequency higher, is easy to improve communication speed, with LED as light source
Visible light communication be the development of following visible light communication an important directions.Therefore, how to realize transceiver based on LED
The visible ray duplex communication of light source is the problem of current communication technical field urgent need to resolve.
The content of the invention
It is logical with the visible ray duplex for realizing transceiver invention broadly provides a kind of mobile terminal and communication system
Letter.
In order to solve the above technical problems, one aspect of the present invention is：A kind of mobile terminal is provided, including：
First transceiver, the first signal processing circuit and secondary signal process circuit；The first transceiver respectively with institute
State the first signal processing circuit and secondary signal process circuit connection, for first signal processing circuit is produced first
Electric signal is converted into the first visible light signal and launches, for receiving the second visible light signal and being converted into the second electric signal
It is transferred to the secondary signal process circuit.
Wherein, the first transceiver includes light emitting diode and photodetector；The light emitting diode and described
One signal processing circuit is connected, for receiving first electric signal and first electric signal being converted into described first visible
Launch after optical signal；The photodetector is used to receive second visible light signal, and by second visible ray
Signal is transferred to the secondary signal process circuit after being converted into second electric signal.
Wherein, the photodetector is photodiode.
Wherein, first signal processing circuit includes coding sub-circuit, modulation sub-circuit and preequalization sub-circuit；It is described
Coding sub-circuit, the modulation sub-circuit and the preequalization sub-circuit are sequentially connected, the preequalization sub-circuit and described the
One transceiver is connected；The coding sub-circuit is used for the first Data Stream Processing is into the first baseband signal and sends the modulation to
Sub-circuit；The modulation sub-circuit is used for first modulates baseband signals into first electric signal that can be transmitted；It is described
Preequalization sub-circuit is used to be pre-compensated for first electric signal to reduce first electric signal distortion in the transmission,
And send first electric signal to the first transceiver.
Wherein, the secondary signal process circuit includes post-equalization sub-circuit, demodulation sub-circuit and decoding sub-circuit；It is described
Post-equalization sub-circuit, the demodulation sub-circuit and the decoding sub-circuit are sequentially connected；The post-equalization sub-circuit and described
One transceiver is connected；The post-equalization sub-circuit is used to compensate second electric signal that the first transceiver is transmitted；It is described
Demodulation sub-circuit is used to for second electric signal to be converted into the second baseband signal；The decoding sub-circuit is used for described second
Baseband signal is converted into second data flow.
Wherein, the mobile terminal still further comprises controller, information acquisition device, memory and display；The control
Device processed is adopted with first signal processing circuit, the secondary signal process circuit, first receiver, described information respectively
The connection of storage, the memory and the display；The controller is used to give first letter by first data flow
Number process circuit；For second data flow of the second processing processing of circuit to be stored in the memory, concurrently
The display is given to show；For producing the first drive signal to drive first receiver operation；Described information collector
For receiving user input information；The memory is used to store second data flow；Wherein, the first data flow includes described
Second data flow in user input information and/or the memory；The display is used to show second data
Stream.
Wherein, one kind that the display at least can be in display image information, text information and acoustic information.
Wherein, described information collector further gathers message identification code, and is transmitted to the controller；The controller enters
One step produces the first drive signal to drive the first transceiver work according to described information identification code.
Wherein, the mobile terminal further includes second transceiver；The second transceiver respectively with the controller,
First signal processing circuit and secondary signal process circuit are connected；
The controller produces second drive signal to drive described second when described information identification code is not received
Transceiver works；The second transceiver is used to launch the first electric signal that first signal processing circuit is produced,
For receiving the second electric signal and being transferred to the secondary signal process circuit.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of communication system is provided, including
Mobile terminal described at least two.
The beneficial effects of the invention are as follows：Prior art is different from, the present invention includes：First transceiver, the first signal transacting
Circuit and secondary signal process circuit；The first electric signal that the first signal processing circuit is produced is converted into by first transceiver
First visible light signal is simultaneously launched, while receiving the second visible light signal by first transceiver and being converted into the second telecommunications
Number be transferred to secondary signal process circuit, can realize in this way first transceiver simultaneously to the transmitting of visible ray with connect
Receive, so as to realize the visible ray duplex communication of transceiver.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of mobile terminal of the present invention；
Fig. 2 is the structural representation of first transceiver in Fig. 1 embodiments；
Fig. 3 is the structural representation of the first signal processing circuit in Fig. 1 embodiments；
Fig. 4 is the structural representation of secondary signal process circuit in Fig. 1 embodiments；
Fig. 5 is the structural representation of another embodiment of mobile terminal of the present invention；
Fig. 6 is the structural representation of communication system of the present invention.
Specific embodiment
The present invention is described in detail with implementation method below in conjunction with the accompanying drawings.
Refering to Fig. 1, Fig. 1 is the structural representation of the embodiment of mobile terminal of the present invention.The present embodiment includes the first transmitting-receiving
Device 11, the first signal processing circuit 12 and secondary signal process circuit 13.Wherein, first transceiver 11 respectively with the first signal at
Reason circuit 12 and secondary signal process circuit 13 are connected, and the first electric signal that the first signal processing circuit 12 is produced is converted into
Launch after first visible light signal, while receiving the second visible light signal and being transferred to second after being converted into the second electric signal
Signal processing circuit 13.
Prior art is different from, the present embodiment converts electrical signals into what VISIBLE LIGHT EMISSION was gone out using first transceiver 11
Visible ray is received simultaneously and electric signal is converted into such that it is able to realize the visible ray duplex communication of transceiver.
Alternatively, refering to Fig. 2, Fig. 2 is the structural representation of first transceiver 11 in Fig. 1 embodiments, first transceiver 11
Light emitting diode 21 and photodetector 22 are further included, light emitting diode 21 is connected with the first signal processing circuit 12, used
Launch after the first electric signal that the first signal processing circuit 12 is transmitted is converted into the first visible light signal；Photodetection
Device 22 is used to receive the second visible light signal, and is transferred to secondary signal after the second visible light signal is converted into the second electric signal
Process circuit 13.
Alternatively, photodetector 22 is photodiode in the present embodiment, and photodiode is under backward voltage effect
Work, when not having illumination, reverse current is extremely faint, is dark current；When having illumination, it is micro- that reverse current is rapidly increased to tens
Peace, referred to as photoelectric current.The intensity of light is bigger, and reverse current is also bigger.The change of light can cause the change of photodiode current,
Thus optical signal can be converted into electric signal.Certainly other photodetector generations can also be used in other embodiments
For photodiode.
Refering to Fig. 3, Fig. 3 is the structural representation of the first signal processor 12 in Fig. 1 embodiments.First signal processing circuit
12 include coding sub-circuit 31, modulation sub-circuit 32 and preequalization sub-circuit 33；Encode sub-circuit 31, modulate sub-circuit 32 and pre-
Balanced sub-circuit 33 is sequentially connected, and preequalization sub-circuit 33 is connected with first transceiver 11.
Coding sub-circuit 31 is for by the first Data Stream Processing is into the first baseband signal and sends modulation sub-circuit 32 to.It is right
The coding of the first data flow is mainly completion to the treatment such as first data stream compression, to realize the symbol sebolic addressing the first data flow
First baseband signal with most short codeword sequence is transformed to, makes the average information of each code element institute load of the first baseband signal
It is bigger, while can guarantee that subsequently to can without distortions recover the first original data flow after the decoding of the first baseband signal, i.e., again
Reduce information redundancy.
Modulation sub-circuit 32 is used for the first modulates baseband signals into the first electric signal that can be transmitted.Because general base band
Signal frequency is relatively low, signal power is small, is not suitable for directly transmitting, so first by the loading of the first baseband signal over the carrier signal
Launch after forming the first electric signal, to realize bigger signal transmission distance and signal transmission power higher.
Preequalization sub-circuit 33 is used to be pre-compensated for the first electric signal to reduce the mistake in the transmission of the first electric signal
Very, and by the first electric signal the first receiver 11 is sent to.
Refering to Fig. 4, Fig. 4 is the structural representation of secondary signal process circuit 13 in Fig. 1 embodiments, including post-equalization electricity
Road 41, demodulation sub-circuit 42 and decoding sub-circuit 43；Post-equalization sub-circuit 41, demodulation sub-circuit 42 and decoding sub-circuit 43 are successively
Connection；Post-equalization sub-circuit 41 is connected with first transceiver 11；
Post-equalization sub-circuit 41 is used to compensate the second electric signal that first transceiver 11 is transmitted.In an application scenarios,
Post-equalization is using the electric signal of wave filter amendment second and/or removes the intersymbol interference of the second electric signal and compensates the second telecommunications
Number.
Demodulation sub-circuit 42 is used to for the second electric signal to be converted into the second baseband signal.Demodulation is the inverse process of modulation, main
If in the frequency spectrum shift of nearby carriers carrying useful information to base band, then leaching the second base with corresponding wave filter
Band signal.
Decoding sub-circuit 43 is used to for the second baseband signal to be converted into the second data flow.Decoding is the inverse process of coding, main
Second baseband signal is reduced into the second data flow representated by the second baseband signal.
Encode sub-circuit 31 and decode sub-circuit 43, modulation sub-circuit 32 and demodulation sub-circuit 42, be to be correspondingly arranged in pairs.
In other embodiments, may be selected to set coding sub-circuit 31 with decoding sub-circuit 43, modulation sub-circuit 32 and solution
One kind or any combination in tune circuit 42, preequalization sub-circuit 33, post-equalization sub-circuit 41.
Prior art is different from, the present embodiment reduces the redundancy of information by encoding sub-circuit, decoding sub-circuit, so as to
Enough reduce transmission of visible light bandwidth, improve transmission of visible light speed；Can be realized by modulating sub-circuit, demodulation sub-circuit
The bigger transmission range of visible ray and transmission power higher；Can be reduced by preequalization sub-circuit and post-equalization sub-circuit can
See the distortion of optical transport, improve the reliability of transmission of visible light.
Alternatively, with continued reference to Fig. 1, the present embodiment still further comprises controller 14, information acquisition device 15, memory 16
And display 17.
Controller 14 respectively with the first receiver 11, the first signal processing circuit 12, secondary signal process circuit 13, information
Collector 15, memory 16 and display 17 are connected.
Controller 14 is used to give the first signal processing circuit 12 by the first data flow；For by secondary signal process circuit
13 the second data flow storage is sent to display 17 and shows in memory 16；It is used to produce the first drive signal simultaneously
The first receiver 11 is driven to work.
Information acquisition device 15 is used to receive user input information.In an application scenarios, user input information includes figure
As information, text information, acoustic information etc., in other application scene, user input information information also including video etc..
Memory 16 is used to store the second data flow；Display 17 is used to show the second data flow.Wherein, the first data flow
Including the second data flow in user input information and/or memory 16.
Alternatively, one kind that display 17 at least can be in display image information, text information and acoustic information.
Alternatively, the information acquisition device 15 of the present embodiment also further gathers message identification code, and is transmitted to controller 14；Control
Device processed 14 further produces drive signal to drive first transceiver 11 to work according to message identification code.Certainly, in other embodiment
Middle controller 14 can directly produce the first drive signal to drive the first receiver 11 to work.
Refering to Fig. 5, the present embodiment further includes second transceiver 51 on the basis of Fig. 1 embodiments.
Second transceiver 51 connects with controller 14, the first signal processing circuit 12 and secondary signal process circuit 13 respectively
Connect；Controller 14 produces the second drive signal to drive second transceiver 51 to work when message identification code is not received, by first
The first electric signal that signal processing circuit 12 is produced is launched, and receives the second electric signal and is transferred to secondary signal process circuit
13。
The present embodiment can select different information transmission modes according to user's request, when user loads letter in input information
During breath identification code, controller 14 produces the first drive signal to drive first transceiver 11 to work, and realizes the visible ray duplex of information
Communication, such as some do not have network or for saving Internet resources occasion in, visible ray duplex communication can be used.And it is defeated to work as user
When entering in information not having load information identification code, controller 14 produces the second drive signal to drive second transceiver 51 to work, real
Now it is wirelessly transferred communication.
Alternatively, second transceiver 51 is RF transceiver or bluetooth transceiver etc..
As a example by being input into wechat, message identification code selection " # ", such as " you are good for # for user A inputs！", then controller 14
Receive information collector 15 transmit " you are good for #！", and produce the first drive signal to drive first to receive according to message identification code " # "
Hair device 11 works, and by information, " you are good！" user B is sent in the way of visible ray, meanwhile, first transceiver 11 can receive use
The visible optical information that family B sends in the same fashion, so as to realize the visible ray duplex communication between user A and user B, and works as
User A merely enters that " you are good！" when, controller 14 produces the second drive signal to drive second transceiver 51 to work, and selection is wireless to be passed
" you are good by information for defeated communication, such as bluetooth, wifi etc.！" user B is sent to, meanwhile, second transceiver 51 can receive user B
The information for sending in the same fashion, so as to realize that being wirelessly transferred between user A and user B communicates.Certain user and user
Between transmission information can be many-one or the form such as one-to-many, and message identification code is also not limited to " # ".
Prior art is different from, the present invention can also realize selecting different communication modes to be led to according to user's request
Letter, so as to improve the convenience of telex network.
Refering to Fig. 6, Fig. 6 is the structural representation that communication system of the present invention unifies embodiment.The present embodiment includes at least two
The mobile terminal 61,62 of Fig. 1 embodiments, or the mobile terminal 63,64 including at least two Fig. 5 embodiments；Mobile terminal 61,62
The visible ray duplex communication of transceiver is realized by first transceiver 11.And mobile terminal 63,64 is in mobile terminal 61,62
In be separately added into second transceiver 51, second transceiver 51 can be realized being wirelessly transferred between communication, therefore mobile terminal 61,62
Both visible ray duplex communication can be realized, and can realizes being wirelessly transferred communication, user can select according to self communication condition and demand
Select suitable communication mode.In other embodiments, can simultaneously be set in communication system of the present invention according to practical communication demand
The mobile terminal 63,64 of the mobile terminal 61,62 of at least two Fig. 1 embodiments and at least two Fig. 5 embodiments.
Be different from prior art, the present embodiment using first transceiver convert electrical signals into that VISIBLE LIGHT EMISSION goes out it is same
When receive and visible ray and be converted into electric signal such that it is able to realize the visible ray duplex communication of transceiver.
Prior art is different from, the present embodiment can not only reduce the bandwidth of transmission of visible light, improve transmission of visible light
Speed, and the bigger transmission range of visible ray and transmission power higher can be realized, while transmission of visible light can be reduced
Distortion, improve transmission of visible light reliability.
Prior art is different from, the present invention can also realize selecting different communication modes to be led to according to user's request
Letter, so as to improve the convenience of telex network.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of mobile terminal, it is characterised in that including：
First transceiver, the first signal processing circuit and secondary signal process circuit；
The first transceiver is connected with first signal processing circuit and secondary signal process circuit respectively, for by described in
The first electric signal that first signal processing circuit is produced is converted into the first visible light signal and launches, can for receiving second
See optical signal and be converted into the second electric signal transmission to the secondary signal process circuit.
2. mobile terminal according to claim 1, it is characterised in that
The first transceiver includes light emitting diode and photodetector；
The light emitting diode is connected with first signal processing circuit, for receiving first electric signal and by described
One electric signal is launched after being converted into first visible light signal；
The photodetector is used to receive second visible light signal, and second visible light signal is converted into described
The secondary signal process circuit is transferred to after second electric signal.
3. mobile terminal according to claim 2, it is characterised in that
The photodetector is photodiode.
4. mobile terminal according to claim 1, it is characterised in that
First signal processing circuit includes coding sub-circuit, modulation sub-circuit and preequalization sub-circuit；The coding electricity
Road, the modulation sub-circuit and the preequalization sub-circuit are sequentially connected, the preequalization sub-circuit and the first transceiver
Connection；
The coding sub-circuit is used for the first Data Stream Processing is into the first baseband signal and sends the modulation sub-circuit to；
The modulation sub-circuit is used for first modulates baseband signals into first electric signal that can be transmitted；
The preequalization sub-circuit is used to be pre-compensated for first electric signal to reduce first electric signal in transmission
In distortion, and send first electric signal to the first transceiver.
5. mobile terminal according to claim 1, it is characterised in that
The secondary signal process circuit includes post-equalization sub-circuit, demodulation sub-circuit and decoding sub-circuit；Post-equalization
Circuit, the demodulation sub-circuit and the decoding sub-circuit are sequentially connected；The post-equalization sub-circuit and the first transceiver
Connection；
The post-equalization sub-circuit is used to compensate second electric signal that the first transceiver is transmitted；
The demodulation sub-circuit is used to for second electric signal to be converted into the second baseband signal；
The decoding sub-circuit is used to for second baseband signal to be converted into second data flow.
6. the mobile terminal according to any one of claim 1 to 5, it is characterised in that
The mobile terminal still further comprises controller, information acquisition device, memory and display；
The controller respectively with first signal processing circuit, the secondary signal process circuit, first receiver,
The connection of described information collector, the memory and the display；
The controller is used to give first signal processing circuit by first data flow；For by the second processing
Second data flow storage of processing of circuit is sent to the display and shows in the memory；For producing the
One drive signal drives first receiver operation；
Described information collector is used to receive user input information；
The memory is used to store second data flow；
The display is used to show second data flow；
Wherein, the first data flow includes second data flow in the user input information and/or the memory.
7. mobile terminal according to claim 6, it is characterised in that
The display at least can be in display image information, text information and acoustic information one kind.
8. mobile terminal according to claim 6, it is characterised in that
Described information collector further gathers message identification code, and is transmitted to the controller；
The controller further produces the first drive signal to drive the first transceiver work according to described information identification code.
9. mobile terminal according to claim 8, it is characterised in that
The mobile terminal further includes second transceiver；
The second transceiver connects with the controller, first signal processing circuit and secondary signal process circuit respectively
Connect；
The controller produces second drive signal to drive second transmitting-receiving when described information identification code is not received
Device works；
The second transceiver is used to launch the first electric signal that first signal processing circuit is produced, for receiving
Second electric signal is simultaneously transferred to the secondary signal process circuit.
10. a kind of communication system, it is characterised in that including the mobile terminal described at least two any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998051.7A CN106788720B (en) | 2016-11-11 | 2016-11-11 | Mobile terminal and communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998051.7A CN106788720B (en) | 2016-11-11 | 2016-11-11 | Mobile terminal and communication system |
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| CN106788720A true CN106788720A (en) | 2017-05-31 |
| CN106788720B CN106788720B (en) | 2020-02-21 |
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| CN106788720B (en) | 2020-02-21 |
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