CN104079350B - Video and audio transmission device and light emitting module and light receiving module thereof - Google Patents
Video and audio transmission device and light emitting module and light receiving module thereof Download PDFInfo
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- CN104079350B CN104079350B CN201310233892.5A CN201310233892A CN104079350B CN 104079350 B CN104079350 B CN 104079350B CN 201310233892 A CN201310233892 A CN 201310233892A CN 104079350 B CN104079350 B CN 104079350B
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Abstract
A video and audio transmission device comprises a power line communication module, a light emitting module and a light receiving module. The optical transmission module includes an independent frequency band signal transmission unit. The light receiving module includes an independent frequency band signal detecting unit. The power line communication module provides data to the power line and synthesizes the data with the power line signal into a composite power line signal. The light emitting module takes out data from the composite power line signal and drives the luminous body to emit a light signal according to the data. The light receiving module receives the light signal and converts the light signal into sound data or image data after restoring the light signal. When the composite power line signal meets a specific condition, the independent frequency band signal transmitting unit transmits a wireless signal including a synchronization signal. The independent frequency band signal detection unit receives the synchronous signal, so that the optical receiving module can be in communication synchronization with the optical transmitting module.
Description
Technical field
The present invention is related with audio-visual transmission, can effectively integrate power line communication (Power Line especially with regard to one kind
Communication, PLC) technology and visible optical communication (Visible Light Communication, VLC) technology it is audio-visual
Transmitting device and its optical transmitter module and optical receiver module.
Background technique
Data or information are believed with number using existing power line in general, power line communication (PLC) technology refers to
Number processing method is transmitted.Power line communication technology transmits the net of wideband using the power circuit of existing low frequency (50~60Hz)
Network message.Compared to being telephone line used in ADSL, general power line communication using fibre circuit or wired electricity
Sight path.It is using the advantages of power line communication technology: is not required in addition re-lay network line, and power circuit is covered
Geographic coverage is come extensively far beyond the route of other carriers.
As for visible optical communication (VLC) technology be a kind of wireless communication technique, it using frequency between 400THz extremely
The visible light of (that is, wavelength between 375nm between 780nm) is between 800THz as medium of communication.For example, if making
When carrying out visible optical communication with common fluorescent lamp, transmission speed 10kbit/sec；Visible optical communication is carried out using LED light
When, transmission speed is then up to 500Mbit/sec.It can be seen that the transmission range of optical communication is up to 1 to 2 kilometer.Its greatest feature exists
In in combination with solid state illumination technology.
Although power line communication technology and visible optical communication technology are respectively provided with its advantage, however, with regard in terms of audio-visual transmission
Application for, in particular for the application of indoor audio-visual transmission or visual radio, still lack a kind of audio/video transmission system at present
And technology can effectively integrate power line communication technology and visible optical communication technology, to realize audio-visual transmission.Therefore, the present invention mentions
A kind of audio and video transmitting set and its optical transmitter module and optical receiver module out above-mentioned are asked with solve that prior art suffered from
Topic.
Summary of the invention
A specific embodiment according to the present invention is a kind of audio and video transmitting set.In this embodiment, audio and video transmitting set
Include power line communication module, optical transmitter module and optical receiver module.Power line communication module is to provide data to electric power
To synthesize compound electric line of force signal with power line signal in line, wherein data include voice data or image data.Light emitting
Module couples power line.Optical transmitter module includes transmitting terminal power line communication unit, the driving unit that shines, illuminator, detection list
Member and separate bands signal transmitter unit.Transmitting terminal power line communication unit is to take out data from compound power line signal.Hair
Optical drive unit couples transmitting terminal power line communication unit, to provide driving signal according to data.Illuminator coupling, which shines, drives
Moving cell, to issue optical signal according to driving signal.Separate bands signal transmitter unit couples detection unit.Optical receiver module
Including light receiving unit, receiving end power line communication unit, audio-visual reduction unit and separate bands detecting signal unit.Light-receiving
The optical signal that unit is issued to receive illuminator.Receiving end power line communication unit couples light receiving unit, to by light
Signals revivification is data.Audio-visual reduction unit couples receiving end power line communication unit, to convert data to voice data
Or image data.When detection unit detects that compound electric line of force signal meets specified conditions, detection unit controls separate bands
Signal transmitter unit issues the wireless signal including synchronization signal.The separate bands detecting signal unit of optical receiver module receives nothing
Synchronization signal in line signal, so that being communicated between optical receiver module energy and optical transmitter module synchronous.
In an embodiment, optical receiver module is portable electronic devices.
In an embodiment, optical transmitter module is set to lamp holder or light bulb.
In an embodiment, the wireless signal that separate bands signal transmitter unit is issued is infrared ray, deviated light or nothing
Line radio frequency.
In an embodiment, specified conditions are that compound electric line of force signal meets electric current zero phase-sequence triggering (Zero-cross).
In an embodiment, power line communication module passes through network from audio-visual source terminal data.
In an embodiment, illuminator is visible light emitting diode.
It is according to another embodiment of the present invention a kind of optical transmitter module.In this embodiment, optical transmitter module is answered
Transmission for image or voice data.Optical transmitter module includes power line communication unit, shine driving unit, illuminator, inspection
Survey unit and separate bands signal transmitter unit.Power line communication unit couples power line, answers to what is transmitted from power line
It closes power line signal and obtains data, wherein data include image data or voice data.The driving unit coupling power line that shines is logical
Unit is interrogated, to provide driving signal according to data.Illuminator couples the driving unit that shines, to issue light according to driving signal
Signal.Detection unit is to detect whether compound electric line of force signal meets specified conditions.The coupling of separate bands signal transmitter unit
Detection unit, when detection unit detects that compound electric line of force signal meets specified conditions, separate bands signal transmitter unit hair
The wireless signal including synchronization signal is to optical receiver module out, so that communicating between optical receiver module and optical transmitter module same
Step.
It is according to another embodiment of the present invention a kind of optical receiver module.In this embodiment, optical receiver module is answered
Transmission for image or sound.Optical receiver module include light receiving unit, power line communication unit, audio-visual reduction unit and solely
Vertical frequency band signal detecting unit.Light receiving unit is to receive the optical signal issued by illuminator.Power line communication unit coupling
Light receiving unit is connect, to take out data from optical signal.Audio-visual reduction unit couples power line communication unit, to by data also
It originally was image data or voice data.The wireless signal that separate bands detecting signal unit is issued to receive optical transmitter module
In synchronization signal so that between optical receiver module and optical transmitter module communicate it is synchronous.Wherein, including the wireless of synchronization signal
It is issued when signal is meets specified conditions by optical transmitter module.
Compared to prior art, audio and video transmitting set according to the present invention and its optical transmitter module and optical receiver module can
Effectively integrate power line communication technology and visible optical communication technology and carry out audio-visual transmission, have effects that following advantages and:
(1) can be applied to indoor audio-visual transmission, be especially adapted for use in show ground or museum personal audio guide to visitors,
The purposes such as the visual radio of indoor range, the synchronous translation of multi-lingual lecture hall and high confidential session room.
(2) visible optical communication technology of arranging in pairs or groups using general power line communication chipset is only needed, can be realized indoor audio-visual
Transmission, cost are more cheap.
(3) of the invention in order to which the data for allowing optical transmitter module to issue are mutually in step with the received data of optical receiver module
Audio and video transmitting set is mentioned by another separate bands signal (such as infrared ray of low cost) analog current zero phase-sequence trigger signal
Optical receiver module is supplied, so that the communication between optical receiver module and optical transmitter module can be synchronous.
(4) the visual actual demand of optical receiver module of the invention is set to mobile communication device (such as smart phone or nothing
Line earphone), not only increase also user-friendly using upper elasticity.
It can be obtained further by detailed description of the invention below and institute's accompanying drawings about the advantages and spirit of the present invention
Solution.
Detailed description of the invention
Figure 1A is the functional block diagram for being painted an embodiment of optical transmitter module TX of coupling power line PL.
Figure 1B is the functional block diagram for being painted another embodiment of optical transmitter module TX of coupling power line PL.
Fig. 2 is the functional block diagram for being painted an embodiment of optical receiver module RX.
Fig. 3 is the schematic diagram for being painted an embodiment of audio and video transmitting set of the invention.
Fig. 4 is the detailed circuit structural schematic diagram for being painted an embodiment of optical transmitter module TX.Fig. 5 is to be painted light-receiving mould
The detailed circuit structural schematic diagram of an embodiment of block RX.
[symbol description]
PL: power line
TX, TX1~TX3: optical transmitter module
MAC: medium plan circuit
10: front-end circuit
12: DC current generation circuit
14: voltage turns current amplifier
15: processor
16: current adder circuit
17: white light LEDs
18: detection unit
19: infrared LEDs
SAV: compound electric line of force signal
IDC: DC current signal
IAC: ac current signal
SDR: driving signal
SCT: control signal
Ssyn: synchronization signal
SW: optical signal
RX, RX1~RX3: optical receiver module
20: light receiving unit
22: front-end circuit
24: infrared sensor
26: detection unit
28: processor
AVS: audio-visual source terminal
PLC: power line communication module
DTU: detection unit
IRLED: infrared light-emitting diode
DCG: DC power generating circuit
BPF: bandpass filter
TCA: voltage turns current amplifier
40: current adder circuit
42: white light emitting diode
44: front-end circuit
46: medium plan circuit
MCU: processor
PGA: programmable gain amplifier
LPF: low-pass filter
ADC: AC-DC converter
PHY: physical layer
MAC: medium access controller
CLK: clock pulse unit
DAC: DC-AC converter
PHS: light receiving unit
50: front-end circuit
IRS: infrared sensor
52: medium plan circuit
CPU: processor
ZCD: zero current detector
Specific embodiment
A preferred embodiment according to the present invention is a kind of audio and video transmitting set.In this embodiment, audio-visual transmission
Device includes optical transmitter module and optical receiver module.In fact, optical transmitter module may be disposed at lamp holder or light bulb；Optical receiver module
It can be the portable electronic devices of any pattern, such as smart phone, tablet computer or wireless headset, but not limited to this.
Figure 1A is please referred to, Figure 1A is painted the functional block diagram of an embodiment of the optical transmitter module TX of coupling power line PL.
As shown in Figure 1A, optical transmitter module TX include front-end circuit 10, medium plan circuit MAC, DC current generation circuit 12,
Voltage turns current amplifier 14, current adder circuit 16, processor 15, white light LEDs 17, detection unit 18 and infrared LEDs 19.
Wherein, front-end circuit 10 and medium plan circuit MAC constitute transmitting terminal power line communication unit；DC current generation circuit
12, voltage turns current amplifier 14 and current adder circuit 16 constitutes the driving unit that shines；White light LEDs 17 can also be other
Meaning illuminator；Infrared LEDs 19 can also be that other issue any only of wireless signal (infrared ray, deviated light or less radio-frequency)
Vertical band signal transmitting unit, is not limited with this example.
Power line PL is respectively coupled to front-end circuit 10 and DC current generation circuit 12；Front-end circuit 10 is respectively coupled to media
Access-control scheme MAC and detection unit 18；Medium plan circuit MAC is respectively coupled to voltage and turns current amplifier 14 and place
Manage device 15；DC current generation circuit 12 and voltage turn current amplifier 14 and couple current adder circuit 16；Current add electricity
Road 16 couples white light LEDs 17；Detection unit 18 couples infrared LEDs 19.
In this embodiment, generated since power line PL is respectively coupled to front-end circuit 10, detection unit 18 and DC current
Circuit 12, the compound electric line of force signal S that power line PL is transmittedAVFront-end circuit 10, detection unit 18 and direct current will be sent to
Current generating circuit 12.In one embodiment, compound electric line of force signal SAVTo believe with the alternating voltage of a particular job frequency
Number, containing the data for belonging to high-frequency signal.The working frequency is then without certain restrictions, it is however generally that is 60Hz.Front-end circuit
10 to compound electric line of force signal SAVGain filter is carried out, then, then passes through gain filter certainly by medium plan circuit MAC
Data are taken out in signal after wave.Wherein, data include image data or voice data.Then as DC current generation circuit 12
According to compound electric line of force signal SAVDC current signal I is providedDCTo current adder circuit 16.
Voltage turns current amplifier 14 and is converted to alternating current to the data for being taken out medium plan circuit MAC
Signal IACAnd it exports to current adder circuit 16.When current adder circuit 16 turns from DC current generation circuit 12 and voltage respectively
Current amplifier 14 receives DC current signal IDCAnd ac current signal IACWhen, current adder circuit 16 is by DC current
Signal IDCWith ac current signal IACIt is coupled as driving signal SDRAnd it exports to white light LEDs 17.White light LEDs 17 will be according to drive
Dynamic signal SDRIssue optical signal SW.Due to driving signal SDRFor the combination of DC current signal and the ac current signal of analogy,
Therefore the luminous signal of white light LEDs 17 can generate the cumulative company with decrescence of luminous intensity with the variation of the ac current signal of analogy
Continuous combination variation.
Detection unit 18 is to detect compound electric line of force signal SAVOn a specified conditions, using as with optical receiver module RX
Between the synchronous foundation of signal.Since in the present embodiment, the signal of corresponding data is loaded on an ac voltage signal, therefore the spy
Fixed condition be using the time point of the electric current zero phase-sequence of ac voltage signal triggering (Zero-cross) as signal synchronization according to
According to.Although being noted that compound electric line of force signal SAVFor electric power signal and data-signal composition composite signal, but data believe
Number presence for detection unit 18, noise can be considered as, thus will not influence zero phase-sequence triggering (Zero-cross) when
Between the detection put；But, settable by the data before detection unit 18 or inside detection unit 18 in another embodiment
The filter of target signal filter, this is that the people of art technology can be arranged according to demand, is not implementation spirit of that invention
Limitation.When detection unit 18 detects compound electric line of force signal SAVOn meet the specified conditions (such as the triggering of electric current zero phase-sequence)
When, the output control of detection unit 18 signal SCTIt include synchronization signal S to control infrared LEDs 19 and issue to infrared LEDs 19syn
Wireless signal.When compound electric line of force signal S is not detected in detection unit 18AVMeet specified conditions (such as electric current zero phase-sequence touching
Hair) when, infrared LEDs 19 will not be issued including synchronization signal SsynWireless signal.
Also Figure 1B is please referred to, Figure 1B is the function side for being painted another embodiment of optical transmitter module TX of coupling power line PL
Block figure.Figure 1B and Figure 1A the difference is that: the detection unit 18 in Figure 1B is set in front-end circuit 10 and couples infrared ray
LED19, and the detection unit 18 in Figure 1A is set between front-end circuit 10 and infrared LEDs 19.But both to detect
Compound electric line of force signal SAVWhether meet the triggering of electric current zero phase-sequence, includes synchronizing selectively to control infrared LEDs 19 and issue
Signal SsynWireless signal.
Then, referring to Fig. 2, Fig. 2 is the functional block diagram for being painted an embodiment of optical receiver module RX.As shown in Fig. 2,
Optical receiver module RX includes light receiving unit 20, front-end circuit 22, infrared sensor 24, detection unit 26, medium access control
Circuit MAC and processor 28 processed.Wherein, front-end circuit 22 and medium plan circuit MAC constitute receiving end power line communication
Unit.Light receiving unit 20 couples front-end circuit 22；Infrared sensor 24 couples detection unit 26；Front-end circuit 22 and detection
Unit 26 couples medium plan circuit MAC；Medium plan circuit MAC couples processor 28.
Brought forward states Figure 1A or Figure 1B, when the white light LEDs 17 of optical transmitter module TX issue optical signal SWWhen, the light in Fig. 2 connects
The light receiving unit 20 for receiving module RX will receive optical signal SWAnd it is sent to front-end circuit 22, then by 22 pairs of light letters of front-end circuit
Number SWOptical signal S after carrying out Gain filter, by medium plan circuit MAC certainly after Gain filterWAcquirement data are simultaneously defeated
Out to processor 28.Processor 28 includes audio-visual reduction unit (not shown), to be image data or sound by data convert
It is exported after data.
It include synchronization signal S in wireless signal received by infrared sensor 24 when detection unit 26 detectssyn
When, detection unit 26 is by synchronization signal SsynIt is exported by medium plan circuit MAC to processor 28, so that light-receiving
Communication between module RX and optical transmitter module TX can be synchronous.Pass through synchronization signal Ssyn, detection unit 26 can correctly sentence
The timing of disconnecting receipts data.
Referring to figure 3., Fig. 3 is the schematic diagram for being painted an embodiment of audio and video transmitting set of the invention.As shown in figure 3,
Assuming that audio and video transmitting set is used under indoor environment, audio and video transmitting set includes power line communication module PLC, power line
PL, optical transmitter module TX1~TX3 and optical receiver module RX1~RX3.Wherein, power line communication module PLC coupling has been set originally
Power line PL disposed within, and power line PL coupling be respectively arranged on different lamp holders or light bulb optical transmitter module TX1~
TX3。
Power line communication module PLC can be by network or connecting line from audio-visual source terminal AVS (such as notebook computer or shadow
Sound player, but not limited to this) data including voice data or image data are received in a wired or wireless manner, and will
It synthesizes compound electric line of force signal S with power line signalAV, reload to power line PL, and by power line PL by compound electric
Line of force signal SAVIt is respectively sent to optical transmitter module TX1~TX3.
The function situation of optical transmitter module TX1~TX3 connects from power line PL as depicted in Figure 1A or Figure 1B respectively
It recovers and closes power line signal SAVAnd export different optical signal SW.When optical transmitter module TX1~TX3 detects that the compound electric line of force is believed
Number SAVWhen meeting specified conditions (such as the triggering of electric current zero phase-sequence), optical transmitter module TX1~TX3 will be issued including synchronization signal
SsynWireless signal.
Assuming that different users have on respectively (or carry) optical receiver module RX1~RX3 station optical transmitter module TX1~
In the signal transmitting range of TX3, that is, optical receiver module RX1 is located at optical transmitter module TX1 close beneath, optical receiver module RX2
It is located at optical transmitter module TX3 close beneath positioned at optical transmitter module TX2 close beneath and optical receiver module RX3.Optical receiver module
The function situation of RX1~RX3 receives different optical signal S from optical transmitter module TX1~TX3 respectively as depicted in Fig. 2W
And exported after being reduced into the voice data or image data of script, for have on respectively (or carry) optical receiver module RX1~
Each user of RX3 listens to voice data or viewing image data.
Whereby, it is assumed that power line PL is sent to the compound electric line of force signal S of each optical transmitter module TX1~TX3AVWith difference
Voice data or image data, then each user below different optical transmitter module TX1~TX3 that stands respectively can listen respectively
To different sound or see different images.
For example, in show ground, it is assumed that different visitors have on wireless guide to visitors earphone (optical receiver module) respectively
RX1~RX3, as shown in figure 3, when the visitor for having on wireless guide to visitors earphone RX1 goes to below optical transmitter module TX1, wirelessly
Guide to visitors earphone RX1 will receive the optical signal that optical transmitter module TX1 is issued, and restore about position from optical signal in light
The voice of show piece below transmitting module TX1 introduces data, to play to visitor's listening.Similarly, when having on wireless guide to visitors
When the visitor of earphone RX2 is gone to below optical transmitter module TX2, wireless guide to visitors earphone RX2 will receive optical transmitter module TX2
The optical signal issued, and from the voice introduction of the show piece restored in optical signal about position below optical transmitter module TX2
Data, to play to visitor's listening；When the visitor for having on wireless guide to visitors earphone RX3 goes to below optical transmitter module TX3,
Wireless guide to visitors earphone RX3 will receive the optical signal that optical transmitter module TX3 is issued, and restore from optical signal about position
The voice of show piece below optical transmitter module TX3 introduces data, to play to visitor's listening.
Certainly, once the visitor for having on wireless guide to visitors earphone RX3 goes to light below optical transmitter module TX3 from script station
Below transmitting module TX2, since wireless guide to visitors earphone RX3 is located in the signal transmitting range of optical transmitter module TX2 at this time, so
Wireless guide to visitors earphone RX3 will be changed to receive the optical signal that optical transmitter module TX2 is issued, and restore from optical signal about
The voice of show piece of the position below optical transmitter module TX2 introduces data, to play to visitor's listening.Remaining situation can be according to
This analogizes, and does not repeat separately in this.
Referring to figure 4., Fig. 4 is the detailed circuit structural schematic diagram for being painted an embodiment of optical transmitter module TX.Such as Fig. 4 institute
Show, optical transmitter module TX includes detection unit DTU, infrared light-emitting diode IRLED, DC power generating circuit DCG, band logical
Filter BPF, voltage turn current amplifier TCA, current adder circuit 40, white light emitting diode 42, front-end circuit 44, media
Access-control scheme 46 and processor MCU.Wherein, front-end circuit 44 includes programmable gain amplifier PGA and low-pass filter
LPF；Medium plan circuit 46 includes AC-DC converter ADC, physical layer PHY, medium access controller MAC, clock pulse
Unit CLK and DC-AC converter DAC.
In this embodiment, compound electric line of force signal S that power line PL is transmittedAVIt will be respectively sent to detection unit
DTU, DC power generating circuit DCG and bandpass filter BPF；Detection unit DTU couples infrared light-emitting diode IRLED；
Bandpass filter BPF couples front-end circuit 44 comprising has programmable gain amplifier PGA and low-pass filter LPF.At this
In embodiment, bandpass filter BPF couples programmable gain amplifier PGA, and programmable gain amplifier PGA couples low-pass filtering
Device LPF；Low-pass filter LPF couples AC-DC converter ADC；AC-DC converter ADC couples physical layer PHY；It is real
Body layer PHY couples medium access controller MAC and clock pulse unit CLK；Medium access controller MAC couple clock pulse unit CLK and
Processor MCU；DC-AC converter DAC is coupled to physical layer PHY and voltage turns between current amplifier TCA；DC power supply
Generation circuit DCG and voltage turn current amplifier TCA and are both coupled to current adder circuit 40；Current adder circuit 40 couples white light
Light emitting diode 42, and optical signal S is issued by white light emitting diode 42W.When detection unit DTU detects that the compound electric line of force is believed
Number SAVWhen meeting specified conditions (such as the triggering of electric current zero phase-sequence), detection unit DTU controls infrared light-emitting diode IRLED hair
It out include synchronization signal SsynWireless signal.
Referring to figure 5., Fig. 5 is the detailed circuit structural schematic diagram for being painted an embodiment of optical receiver module RX.Such as Fig. 5 institute
Show, optical receiver module RX includes light receiving unit PHS, bandpass filter BPF, front-end circuit 50, infrared sensor IRS, matchmaker
Body access-control scheme 52 and processor CPU.Wherein, front-end circuit 50 includes programmable gain amplifier PGA, low-pass filter
LPF and zero current detector ZCD；Medium plan circuit 52 includes AC-DC converter ADC, physical layer PHY, media
Access controller MAC, clock pulse unit CLK and DC-AC converter DAC.
In this embodiment, that the infrared light-emitting diode IRLED in Fig. 4 is issued includes synchronization signal SsynNothing
Line signal is received by the infrared sensor IRS in Fig. 5；The optical signal S that white light emitting diode 42 in Fig. 4 is issuedW
It is received by the light receiving unit PHS in Fig. 5.Light receiving unit PHS couples bandpass filter BPF；Bandpass filter BPF coupling
Programmable gain amplifier PGA；Programmable gain amplifier PGA couples low-pass filter LPF；Low-pass filter LPF coupling is handed over
Stream-direct current transducer ADC；AC-DC converter ADC couples physical layer PHY；Physical layer PHY couples medium access controller
MAC and clock pulse unit CLK；Medium access controller MAC couples clock pulse unit CLK and processor MCU；DC-AC converter
DAC couples physical layer PHY；Zero current detector ZCD couples infrared sensor IRS.When zero current detector ZCD detect it is red
That outside line sensor IRS receives that the infrared light-emitting diode IRLED in Fig. 4 issued includes synchronization signal SsynIt is wireless
When signal, zero current detector ZCD outputs control signals to physical layer PHY, to control the clock pulse unit CLK of optical receiver module RX
It can be synchronous with optical transmitter module TX.
Compared to prior art, audio and video transmitting set according to the present invention and its optical transmitter module and optical receiver module can
Effectively integrate power line communication technology and visible optical communication technology and carry out audio-visual transmission, have effects that following advantages and:
(1) can be applied to indoor audio-visual transmission, be especially adapted for use in show ground or museum personal audio guide to visitors,
The purposes such as the visual radio of indoor range, the synchronous translation of multi-lingual lecture hall and high confidential session room.
(2) visible optical communication technology of arranging in pairs or groups using general power line communication chipset is only needed, can be realized indoor audio-visual
Transmission, cost are more cheap.
(3) since power line communication chipset needs electric current zero phase-sequence to trigger (zero-cross) signal, shadow of the invention
Sound transmitting device by another separate bands signal the infrared ray of low cost (such as) analog current zero phase-sequence trigger signal so that
The communication obtained between optical receiver module and optical transmitter module can be synchronous.
(4) the visual actual demand of optical receiver module of the invention is set to mobile communication device (such as smart phone or nothing
Line earphone), not only increase also user-friendly using upper elasticity.
Pass through the above detailed description of preferred embodiments, it would be desirable to feature and spirit of the invention are more clearly described, and
Not scope of the invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, the purpose is to wish
Various changes can be covered and have being arranged in the scope of the claim to be applied of the invention of equality.
Claims (14)
1. a kind of audio and video transmitting set, comprising:
One power line communication module, it is compound to synthesize one with a power line signal a data to be provided in a power line
Power line signal, wherein the data include a voice data or an image data；
One optical transmitter module couples the power line, comprising:
One transmitting terminal power line communication unit, to take out the data from the compound electric line of force signal；
One luminous driving unit couples the transmitting terminal power line communication unit, to provide a driving signal according to the data；
One illuminator couples the driving unit that shines, to issue an optical signal according to the driving signal；
One detection unit；And
One separate bands signal transmitter unit, couples the detection unit；And
One optical receiver module, comprising:
One light receiving unit, the optical signal issued to receive the illuminator；
One receiving end power line communication unit, couples the light receiving unit, the optical signal is reduced to the data；
One audio-visual reduction unit couples the receiving end power line communication unit, to convert this data to the voice data or
The image data；And
One separate bands detecting signal unit；
Wherein, when the detection unit detects that the compound electric line of force signal meets a specified conditions, detection unit control should
Separate bands signal transmitter unit issues the wireless signal including a synchronization signal, the separate bands letter of the optical receiver module
Number detection unit receives the synchronization signal in the wireless signal, so that between the optical receiver module energy and the optical transmitter module
Communication synchronizes, and wherein the specified conditions are that the compound electric line of force signal meets the triggering of electric current zero phase-sequence.
2. audio and video transmitting set as described in claim 1, which is characterized in that the optical receiver module is portable electronic dress
It sets.
3. audio and video transmitting set as described in claim 1, which is characterized in that the optical transmitter module is set to a lamp holder or a lamp
Bubble.
4. audio and video transmitting set as described in claim 1, which is characterized in that the separate bands signal transmitter unit was issued
The wireless signal is an infrared ray, a deviated light or a less radio-frequency.
5. audio and video transmitting set as described in claim 1, which is characterized in that the power line communication module passes through a network from one
The audio-visual source terminal data.
6. audio and video transmitting set as described in claim 1, which is characterized in that the illuminator is visible light emitting diode.
7. a kind of optical transmitter module, applied to the transmission of image or voice data, which includes:
One power line communication unit couples a power line, and the compound electric line of force signal to be transmitted from the power line obtains
One data, wherein the data include an image data or a voice data；
One luminous driving unit couples the power line communication unit, to provide a driving signal according to the data；
One illuminator couples the driving unit that shines, to issue an optical signal according to the driving signal；
One detection unit, to detect whether the compound electric line of force signal meets a specified conditions；And
One separate bands signal transmitter unit, couples the detection unit, when the detection unit detects the compound electric line of force signal
When meeting the specified conditions, which issues the wireless signal a to light including a synchronization signal and connects
Module is received, so that communication is synchronous between the optical receiver module and the optical transmitter module, which is the compound electric line of force
Signal meets the triggering of electric current zero phase-sequence.
8. optical transmitter module as claimed in claim 7, which is characterized in that the detection unit couples the power line or is set to this
In power line communication unit.
9. optical transmitter module as claimed in claim 7, which is characterized in that the power line communication unit further include:
One front-end circuit, to carry out Gain filter to the compound electric line of force signal；And
One medium plan circuit, couples the front-end circuit, to the compound electric line of force signal certainly after Gain filter
Take out the data.
10. optical transmitter module as claimed in claim 9, which is characterized in that this shine driving unit include:
One DC power generating circuit couples the power line, to provide a DC current signal；
One voltage turns current amplification circuit, is coupled to the medium plan circuit, to by the medium plan circuit institute
The data taken out are converted to an ac current signal and export；And
One current adder circuit is coupled between the DC power generating circuit and the illuminator, to believe the DC current
Number with the ac current signal be coupled as the driving signal.
11. optical transmitter module as claimed in claim 7, which is characterized in that the separate bands signal transmitter unit was issued
The wireless signal is an infrared ray, a deviated light or a less radio-frequency.
12. a kind of optical receiver module, applied to the transmission of image or sound, which includes:
One light receiving unit, to receive the optical signal issued by an illuminator；
One power line communication unit, couples the light receiving unit, to take out a data from the optical signal；
One audio-visual reduction unit couples the power line communication unit, to be an image data or a sound by the data convert
Data；And
One separate bands detecting signal unit, to receive the synchronous letter in the wireless signal that an optical transmitter module is issued
Number, so that being communicated between the optical receiver module and the optical transmitter module synchronous；
Wherein, the wireless signal including the synchronization signal to meet a specified conditions when issued by the optical transmitter module, should
Specified conditions are that a compound electric line of force signal meets the triggering of electric current zero phase-sequence.
13. optical receiver module as claimed in claim 12, which is characterized in that the power line communication unit further includes:
One front-end circuit couples the light receiving unit, to carry out Gain filter to the optical signal；And
One medium plan circuit, couples the front-end circuit, to obtain the number from the optical signal after Gain filter
According to.
14. optical receiver module as claimed in claim 12, which is characterized in that be a portable electronic devices.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102111488A TWI474637B (en) | 2013-03-29 | 2013-03-29 | Video and audio transmission apparatus and light emitting module and light receiving module thereof |
| TW102111488 | 2013-03-29 |
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| CN104079350A CN104079350A (en) | 2014-10-01 |
| CN104079350B true CN104079350B (en) | 2019-07-19 |
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| CN201310233892.5A Active CN104079350B (en) | 2013-03-29 | 2013-06-13 | Video and audio transmission device and light emitting module and light receiving module thereof |
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| Country | Link |
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| TW (1) | TWI474637B (en) |
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| TWI586178B (en) * | 2014-12-05 | 2017-06-01 | 吳槐桂 | Data broadcasting system using visible light, signal transmitting apparatus and apparatus for receiving visible light |
| CN104660305B (en) * | 2015-02-11 | 2017-07-11 | 中北大学 | A kind of power grid communication network and the means of communication based on WIMAX |
| CN106357329B (en) * | 2016-10-18 | 2019-03-19 | 中广核工程有限公司 | Nuclear power plant's handheld terminal, electromagnetic susceptibility origin base station wireless communications method, apparatus and system |
| CN110311713B (en) * | 2019-07-11 | 2021-12-07 | 深圳市国芯智源微电子有限公司 | Power dual-mode communication method based on IEEE1901.1 communication standard |
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| CN1723639A (en) * | 2002-10-24 | 2006-01-18 | 株式会社中川研究所 | Illumination light communication device |
| JP2007067764A (en) * | 2005-08-31 | 2007-03-15 | Daii Sai | Lighting device and system having infrared data broadcasting function |
| TW200807913A (en) * | 2006-03-31 | 2008-02-01 | Nakagawa Lab Inc | Visible light communication system |
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| JP4692991B2 (en) * | 2005-05-20 | 2011-06-01 | 株式会社中川研究所 | Data transmitting apparatus and data receiving apparatus |
| JP2007274566A (en) * | 2006-03-31 | 2007-10-18 | Nakagawa Kenkyusho:Kk | Illumination light communication device |
| JP2008227944A (en) * | 2007-03-13 | 2008-09-25 | Toshiba Corp | Receiving apparatus for visible light communication, and visible light communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1723639A (en) * | 2002-10-24 | 2006-01-18 | 株式会社中川研究所 | Illumination light communication device |
| CN101350669A (en) * | 2002-10-24 | 2009-01-21 | 株式会社中川研究所 | Illumination light communication device |
| JP2007067764A (en) * | 2005-08-31 | 2007-03-15 | Daii Sai | Lighting device and system having infrared data broadcasting function |
| TW200807913A (en) * | 2006-03-31 | 2008-02-01 | Nakagawa Lab Inc | Visible light communication system |
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| CN104079350A (en) | 2014-10-01 |
| TW201438415A (en) | 2014-10-01 |
| TWI474637B (en) | 2015-02-21 |
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