CN104079350A - 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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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 relevant with audio-visual transmission, particularly about a kind of, can effectively integrate power line communication (Power Line Communication, audio and video transmitting set and light emission module and the Optical Receivers of PLC) technology and visible ray communication (Visible Light Communication, VLC) technology.
Background technology
Generally speaking, power line communication (PLC) technology refers to and utilizes existing power line that data or information are transmitted with digital signal processing method.Power line communication technology is used the power circuit of existing low frequency (50～60Hz) to transmit the network message of wideband.What compared to ADSL, use is telephone line, and fibre circuit or catv line are used in the application of general power line communication.Use the advantage of power line communication technology to be: do not need again to lay in addition network line, and the geographic coverage that contains of power circuit to be come extensively far beyond the circuit of other carriers.
As for visible ray communication (VLC) technology, be a kind of wireless communication technique, it utilizes frequency to be used as medium of communication between the visible ray of (that is wavelength is between between 375nm to 780nm) between 400THz to 800THz.For example, if while using common fluorescent lamp to carry out visible ray communication, its transmission speed is 10kbit/sec; While using LED lamp to carry out visible ray communication, its transmission speed can reach 500Mbit/sec.The transmission range of visible ray communication can reach 1 to 2 kilometer.Its greatest feature is can be in conjunction with solid-state illumination technology.
Although power line communication technology and visible ray mechanics of communication have respectively its advantage, yet, with regard to the application of audio-visual transmission aspect, especially for the application of indoor audio-visual transmission or visual radio, still lack at present a kind of audio/video transmission system and technology and can effectively integrate power line communication technology and visible ray mechanics of communication, to realize audio-visual transmission.Therefore, the present invention proposes a kind of audio and video transmitting set and light emission module and Optical Receivers, the problems referred to above that suffered to solve prior art.
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 comprises power line communication module, light emission module and Optical Receivers.Power line communication module is in order to provide data in power line to synthesize compound electric line of force signal with power line signal, and wherein data comprise voice data or image data.Light emission module couples power line.Light emission module comprises transmitting terminal power line communication unit, luminous driver element, luminous element, detecting unit and separate bands signal transmitter unit.Transmitting terminal power line communication unit is in order to take out data from compound power line signal.Luminous driver element couples transmitting terminal power line communication unit, in order to driving signal to be provided according to data.Luminous element couples luminous driver element, in order to send light signal according to driving signal.Separate bands signal transmitter unit couples detecting unit.Optical Receivers comprises light receiving unit, receiving terminal power line communication unit, audio-visual reduction unit and separate bands detecting signal unit.The light signal that light receiving unit sends in order to receive luminous element.Receiving terminal power line communication unit couples light receiving unit, in order to light signal is reduced to data.Audio-visual reduction unit couples receiving terminal power line communication unit, in order to data are converted to voice data or image data.When detecting unit detects compound electric line of force signal and meets specified conditions, detecting unit is controlled separate bands signal transmitter unit and is sent the wireless signal that comprises synchronizing signal.The separate bands detecting signal unit of Optical Receivers receives the synchronizing signal in wireless signal, so that communication is synchronizeed between Optical Receivers energy and light emission module.
In an embodiment, Optical Receivers is portable electronic devices.
In an embodiment, light emission module is arranged at lamp socket or bulb.
In an embodiment, the wireless signal that separate bands signal transmitter unit sends is infrared ray, deviated light or less radio-frequency.
In an embodiment, specified conditions are that compound electric line of force signal meets current zero phase sequence triggering (Zero-cross).
In an embodiment, power line communication module is received data by network from audio-visual source termination.
In an embodiment, luminous element is visible light emitting diode.
Another specific embodiment according to the present invention is a kind of light emission module.In this embodiment, light emission module is applied to the transmission of image or voice data.Light emission module comprises power line communication unit, luminous driver element, luminous element, detecting unit and separate bands signal transmitter unit.Power line communication unit couples power line, in order to the compound electric line of force signal transmitting from power line, obtains data, and wherein data comprise image data or voice data.Luminous driver element couples power line communication unit, in order to driving signal to be provided according to data.Luminous element couples luminous driver element, in order to send light signal according to driving signal.Whether detecting unit meets specified conditions in order to detect compound electric line of force signal.Separate bands signal transmitter unit couples detecting unit, when detecting unit detects compound electric line of force signal and meets specified conditions, separate bands signal transmitter unit send comprise synchronizing signal wireless signal to Optical Receivers, so that communication is synchronizeed between Optical Receivers and light emission module.
Another specific embodiment according to the present invention is a kind of Optical Receivers.In this embodiment, Optical Receivers is applied to the transmission of image or sound.Optical Receivers comprises light receiving unit, power line communication unit, audio-visual reduction unit and separate bands detecting signal unit.Light receiving unit is in order to receive the light signal being sent by luminous element.Power line communication unit couples light receiving unit, in order to take out data from light signal.Audio-visual reduction unit couples power line communication unit, in order to data are reduced to image data or voice data.Separate bands detecting signal unit is in order to the synchronizing signal in the wireless signal that receives light emission module and send, so that communication is synchronizeed between Optical Receivers and light emission module.Wherein, the wireless signal that comprises synchronizing signal is sent by light emission module when meeting specified conditions.
Compared to prior art, according to audio and video transmitting set of the present invention and light emission module thereof and Optical Receivers can effectively integrate power line communication technology and visible ray mechanics of communication is carried out audio-visual transmission, there is following advantages and effect:
(1) can be applicable to indoor audio-visual transmission, be especially applicable to the purposes such as personal audio guide to visitors, the visual radio of indoor range, the synchronous translation of multi-lingual lecture hall and high confidential session chamber in show ground or museum.
(2) only need to adopt general power line communication chipset collocation visible ray mechanics of communication, can realize indoor audio-visual transmission, cost is comparatively cheap.
(3) the data phase mutually synchronization in order to allow data that light emission module sends and Optical Receivers receive, for example, by another separate bands signal (cheaply infrared ray), analog current zero phase-sequence triggering signal offers Optical Receivers to audio and video transmitting set of the present invention, so that Optical Receivers can be synchronizeed with the communication between light emission module.
(4) the visual actual demand of Optical Receivers of the present invention is arranged at mobile communication device (for example smart mobile phone or wireless headset), not only increases the also person's easy to use use of elasticity on using.
Can be by following detailed Description Of The Invention and appended graphic being further understood about the advantages and spirit of the present invention.
Accompanying drawing explanation
Figure 1A is the functional block diagram that illustrates an embodiment of the light emission module TX that couples power line PL.
Figure 1B is the functional block diagram that illustrates another embodiment of the light emission module TX that couples power line PL.
Fig. 2 is the functional block diagram that illustrates an embodiment of Optical Receivers RX.
Fig. 3 is the schematic diagram that illustrates an embodiment of audio and video transmitting set of the present invention.
Fig. 4 is the detailed circuit structural representation that illustrates an embodiment of light emission module TX.Fig. 5 is the detailed circuit structural representation that illustrates an embodiment of Optical Receivers RX.
[symbol description]
PL: power line
TX, TX1～TX3: light emission module
MAC: medium access control circuit
10: front-end circuit
12: direct current produces circuit
14: voltage turns current amplifier
15: processor
16: current adder circuit
17: white light LEDs
18: detecting unit
19: infrared LEDs
S
aV: compound electric line of force signal
I
dC: DC current signal
I
aC: ac current signal
S
dR: drive signal
S
cT: control signal
S
syn: synchronizing signal
S
w: light signal
RX, RX1～RX3: Optical Receivers
20: light receiving unit
22: front-end circuit
24: infrared ray sensor
26: detecting unit
28: processor
AVS: audio-visually carry out source
PLC: power line communication module
DTU: detecting unit
IRLED: infrared light-emitting diode
DCG: DC power generating circuit
BPF: band pass filter
TCA: voltage turns current amplifier
40: current adder circuit
42: white light emitting diode
44: front-end circuit
46: medium access control 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 ray sensor
52: medium access control circuit
CPU: processor
ZCD: zero current detector
Embodiment
A preferred embodiment according to the present invention is a kind of audio and video transmitting set.In this embodiment, audio and video transmitting set comprises light emission module and Optical Receivers.In fact, light emission module can be arranged at lamp socket or bulb; Optical Receivers can be the portable electronic devices of any pattern, for example smart mobile phone, panel computer or wireless headset, but not as limit.
Refer to Figure 1A, Figure 1A illustrates the functional block diagram of an embodiment of the light emission module TX that couples power line PL.As shown in Figure 1A, light emission module TX comprises that front-end circuit 10, medium access control circuit MAC, direct current produce circuit 12, voltage turns current amplifier 14, current adder circuit 16, processor 15, white light LEDs 17, detecting unit 18 and infrared LEDs 19.Wherein, front-end circuit 10 and medium access control circuit MAC form transmitting terminal power line communication unit; Direct current produces circuit 12, voltage turns current amplifier 14 and current adder circuit 16 forms luminous driver element; White light LEDs 17 can also be other any luminous elements; Infrared LEDs 19 can also be other any separate bands signal transmitter units that send wireless signal (infrared ray, deviated light or less radio-frequency), with this example, is not limited.
Power line PL couples respectively front-end circuit 10 and direct current produces circuit 12; Front-end circuit 10 couples respectively medium access control circuit MAC and detecting unit 18; Medium access control circuit MAC couples respectively voltage and turns current amplifier 14 and processor 15; Direct current generation circuit 12 and voltage turn current amplifier 14 and all couple current adder circuit 16; Current adder circuit 16 couples white light LEDs 17; Detecting unit 18 couples infrared LEDs 19.
In this embodiment, because coupling respectively front-end circuit 10, detecting unit 18 and direct current, power line PL produces circuit 12, the compound electric line of force signal S that power line PL transmits
aVwill be sent to front-end circuit 10, detecting unit 18 and direct current generation circuit 12.In one embodiment, compound electric line of force signal S
aVfor thering is the ac voltage signal of a particular job frequency, containing the data that belong to high-frequency signal.This operating frequency, without certain limitation, is generally speaking 60Hz.Front-end circuit 10 is in order to compound electric line of force signal S
aVcarry out Gain filter, then, then in the signal after Gain filter, take out data by medium access control circuit MAC.Wherein, data comprise image data or voice data.As for direct current, produce 12, circuit according to compound electric line of force signal S
aVdC current signal I is provided
dCto current adder circuit 16.
Voltage turns current amplifier 14 and is converted to ac current signal I in order to the data that medium access control circuit MAC is taken out
aCand export current adder circuit 16 to.When current adder circuit 16 produces circuit 12 and voltage from direct current respectively, turn current amplifier 14 and receive DC current signal I
dCand ac current signal I
aCtime, current adder circuit 16 is by DC current signal I
dCwith ac current signal I
aCbe coupled as and drive signal S
dRand export white light LEDs 17 to.White light LEDs 17 will be according to driving signal S
dRsend light signal S
w.Owing to driving signal S
dRfor the combination of the ac current signal of DC current signal and analogy, so the luminous signal of white light LEDs 17 can produce along with the variation of the ac current signal of analogy, and luminous intensity is cumulative to be changed with continuous combination decrescence.
Detecting unit 18 is in order to detect compound electric line of force signal S
aVon specified conditions, using as with Optical Receivers RX between the signal foundation of synchronizeing.Due in the present embodiment, the signal of corresponding data is loaded on an ac voltage signal, so these specified conditions are to using time point that the current zero phase sequence of this ac voltage signal triggers (Zero-cross) as the synchronous foundation of signal.Although be noted that compound electric line of force signal S
aVfor the composite signal of electric power signal and data-signal composition, but the existence of data-signal is for detecting unit 18, can be considered as noise, therefore can't affect the detection that zero phase-sequence triggers (Zero-cross) time point; But, in another embodiment before detecting unit 18 or detecting unit 18 inside can arrange the filter of this data-signal filtering, this is that the people of art technology can arrange according to demand, for implementing the restriction of spirit of the present invention.When detecting unit 18 detects compound electric line of force signal S
aVon for example, while meeting these specified conditions (current zero phase sequence trigger), detecting unit 18 output control signal S
cTto infrared LEDs 19, to control infrared LEDs 19, send and comprise synchronizing signal S
synwireless signal.When detecting unit 18 does not detect compound electric line of force signal S
aVfor example, while meeting specified conditions (current zero phase sequence triggers), infrared LEDs 19 can not sent and comprise synchronizing signal S
synwireless signal.
Also refer to Figure 1B, Figure 1B is the functional block diagram that illustrates another embodiment of the light emission module TX that couples power line PL.Figure 1B and Figure 1A difference are: the detecting unit 18 in Figure 1B is arranged in front-end circuit 10 and couples infrared LEDs 19, and detecting unit 18 in Figure 1A is arranged between front-end circuit 10 and infrared LEDs 19.But both are all in order to detect compound electric line of force signal S
aVwhether meet current zero phase sequence and trigger, optionally to control infrared LEDs 19, send and comprise synchronizing signal S
synwireless signal.
Then, refer to Fig. 2, Fig. 2 is the functional block diagram that illustrates an embodiment of Optical Receivers RX.As shown in Figure 2, Optical Receivers RX comprises light receiving unit 20, front-end circuit 22, infrared ray sensor 24, detecting unit 26, medium access control circuit MAC and processor 28.Wherein, front-end circuit 22 forms receiving terminal power line communication unit with medium access control circuit MAC.Light receiving unit 20 couples front-end circuit 22; Infrared ray sensor 24 couples detecting unit 26; Front-end circuit 22 and detecting unit 26 all couple medium access control circuit MAC; Medium access control circuit MAC couples processor 28.
Brought forward is stated Figure 1A or Figure 1B, when the white light LEDs 17 of light emission module TX sends light signal S
wtime, the light receiving unit 20 of the Optical Receivers RX in Fig. 2 will receiving optical signals S
wand be sent to front-end circuit 22, then by 22 couples of light signal S of front-end circuit
wcarry out after Gain filter, by medium access control circuit MAC from light signal S after Gain filter
wobtain data and export processor 28 to.Processor 28 comprises audio-visual reduction unit (not shown), after data are reduced to image data or voice data, exports.
When detecting the received wireless signal of infrared ray sensor 24, detecting unit 26 comprises synchronizing signal S
syntime, detecting unit 26 is by synchronizing signal S
synby medium access control circuit, MAC exports processor 28 to, so that Optical Receivers RX can be synchronizeed with the communication between light emission module TX.By synchronizing signal S
syn, detecting unit 26 can correctly judge and receive the sequential of data.
Please refer to Fig. 3, Fig. 3 is the schematic diagram that illustrates an embodiment of audio and video transmitting set of the present invention.As shown in Figure 3, suppose that audio and video transmitting set is to be used under indoor environment, audio and video transmitting set comprises power line communication module PLC, power line PL, light emission module TX1～TX3 and Optical Receivers RX1～RX3.Wherein, power line communication module PLC couples and has originally been arranged at indoor power line PL, and power line PL couples the light emission module TX1～TX3 being arranged at respectively on different lamp sockets or bulb.
Power line communication module PLC can come source AVS (for example notebook computer or audio and video player from audio-visual by network or connecting line, but not as limit) in wired or wireless mode, receive the data that comprise voice data or image data, and itself and power line signal are synthesized to compound electric line of force signal S
aV, then it is upper to be loaded into power line PL, and by power line PL by compound electric line of force signal S
aVbe sent to respectively light emission module TX1～TX3.
As the function situation of light emission module TX1～TX3 illustrates as Figure 1A or Figure 1B, from power line PL, receive compound electric line of force signal S respectively
aVand export different light signal S
w.When light emission module TX1～TX3 detects compound electric line of force signal S
aVfor example, while meeting specified conditions (current zero phase sequence triggers), light emission module TX1～TX3 will send and comprise synchronizing signal S
synwireless signal.
Suppose that different users has on respectively (or carrying) Optical Receivers RX1～RX3 and stands in the signal transmitting boundary of light emission module TX1～TX3, that is Optical Receivers RX1 is positioned at, and light emission module TX1 below is neighbouring, Optical Receivers RX2 is positioned near light emission module TX2 below and Optical Receivers RX3 is positioned near light emission module TX3 below.The function situation of Optical Receivers RX1～RX3 receives different light signal S from light emission module TX1～TX3 respectively as illustrating as Fig. 2
wand export after being reduced into voice data originally or image data, for each user who has on respectively (or carrying) Optical Receivers RX1～RX3, listen to voice data or watch image data.
By this, suppose that power line PL is sent to the compound electric line of force signal S of each light emission module TX1～TX3
aVhave different voice datas or image data, each user who stands in respectively different light emission module TX1～TX3 below can hear respectively different sound or see different images.
For example, in show ground, suppose that different visitors have on respectively wireless guide to visitors earphone (Optical Receivers) RX1～RX3, as shown in Figure 3, when having on the visitor of wireless guide to visitors earphone RX1, go to light emission module TX1 when below, wireless guide to visitors earphone RX1 will receive the light signal that light emission module TX1 sends, and the voice that restore the show piece below light emission module TX1 about position from light signal introduce data, to play to visitor, listens to.In like manner, when having on the visitor of wireless guide to visitors earphone RX2, go to light emission module TX2 when below, wireless guide to visitors earphone RX2 will receive the light signal that light emission module TX2 sends, and the voice that restore the show piece below light emission module TX2 about position from light signal introduce data, to play to visitor, listen to; When having on the visitor of wireless guide to visitors earphone RX3, go to light emission module TX3 when below, wireless guide to visitors earphone RX3 will receive the light signal that light emission module TX3 sends, and the voice that restore the show piece below light emission module TX3 about position from light signal introduce data, to play to visitor, listen to.
Certainly, once have on the visitor of wireless guide to visitors earphone RX3, from originally standing in light emission module TX3 below, go to light emission module TX2 below, because wireless guide to visitors earphone RX3 is now positioned at the signal transmitting boundary of light emission module TX2, so will changing into, wireless guide to visitors earphone RX3 receives the light signal that light emission module TX2 sends, and the voice that restore the show piece below light emission module TX2 about position from light signal introduce data, to play to visitor, listen to.All the other situations all can the rest may be inferred, in this, do not repeat separately.
Please refer to Fig. 4, Fig. 4 is the detailed circuit structural representation that illustrates an embodiment of light emission module TX.As shown in Figure 4, light emission module TX comprises that detecting unit DTU, infrared light-emitting diode IRLED, DC power generating circuit DCG, band pass filter BPF, voltage turn current amplifier TCA, current adder circuit 40, white light emitting diode 42, front-end circuit 44, medium access control circuit 46 and processor MCU.Wherein, front-end circuit 44 comprises programmable gain amplifier PGA and low pass filter LPF; Medium access control circuit 46 comprises AC-DC converter ADC, physical layer PHY, medium access controller MAC, clock pulse unit CLK and DC-AC converter DAC.
In this embodiment, the compound electric line of force signal S that power line PL transmits
aVwill be sent to respectively detecting unit DTU, DC power generating circuit DCG and band pass filter BPF; Detecting unit DTU couples infrared light-emitting diode IRLED; Band pass filter BPF couples front-end circuit 44, and it includes programmable gain amplifier PGA and low pass filter LPF.In the present embodiment, band pass filter BPF couples programmable gain amplifier PGA, and programmable gain amplifier PGA couples low pass filter LPF; Low pass filter LPF couples AC-DC converter 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 is coupled to physical layer PHY and voltage turns between current amplifier TCA; DC power generating circuit DCG and voltage turn current amplifier TCA and are all coupled to current adder circuit 40; Current adder circuit 40 couples white light emitting diode 42, and sends light signal S by white light emitting diode 42
w.When detecting unit DTU detects compound electric line of force signal S
aVfor example, while meeting specified conditions (current zero phase sequence triggers), detecting unit DTU control infrared light-emitting diode IRLED sends and comprises synchronizing signal S
synwireless signal.
Please refer to Fig. 5, Fig. 5 is the detailed circuit structural representation that illustrates an embodiment of Optical Receivers RX.As shown in Figure 5, Optical Receivers RX comprises light receiving unit PHS, band pass filter BPF, front-end circuit 50, infrared ray sensor IRS, medium access control circuit 52 and processor CPU.Wherein, front-end circuit 50 comprises programmable gain amplifier PGA, low pass filter LPF and zero current detector ZCD; Medium access control circuit 52 comprises AC-DC converter ADC, physical layer PHY, medium access controller MAC, clock pulse unit CLK and DC-AC converter DAC.
In this embodiment, the infrared light-emitting diode IRLED in Fig. 4 sends comprises synchronizing signal S
synwireless signal by the infrared ray sensor IRS in Fig. 5, received; The light signal S that white light emitting diode 42 in Fig. 4 sends
wby the light receiving unit PHS in Fig. 5, received.Light receiving unit PHS coupled belt bandpass filter BPF; Band pass filter BPF couples programmable gain amplifier PGA; Programmable gain amplifier PGA couples low pass filter LPF; Low pass filter LPF couples AC-DC converter 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 ray sensor IRS.When what zero current detector ZCD detected that infrared ray sensor IRS receives that infrared light-emitting diode IRLED in Fig. 4 sends, comprise synchronizing signal S
synwireless signal time, zero current detector ZCD outputs control signals to physical layer PHY, to control the clock pulse unit CLK of Optical Receivers RX, can synchronize with light emission module TX.
Compared to prior art, according to audio and video transmitting set of the present invention and light emission module thereof and Optical Receivers can effectively integrate power line communication technology and visible ray mechanics of communication is carried out audio-visual transmission, there is following advantages and effect:
(1) can be applicable to indoor audio-visual transmission, be especially applicable to the purposes such as personal audio guide to visitors, the visual radio of indoor range, the synchronous translation of multi-lingual lecture hall and high confidential session chamber in show ground or museum.
(2) only need to adopt general power line communication chipset collocation visible ray mechanics of communication, can realize indoor audio-visual transmission, cost is comparatively cheap.
(3) because needing current zero phase sequence, power line communication chipset triggers (zero-cross) signal, audio and video transmitting set of the present invention is for example, by another separate bands signal (cheaply infrared ray) analog current zero phase-sequence triggering signal, so that Optical Receivers can be synchronizeed with the communication between light emission module.
(4) the visual actual demand of Optical Receivers of the present invention is arranged at mobile communication device (for example smart mobile phone or wireless headset), not only increases the also person's easy to use use of elasticity on using.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and not with above-mentioned disclosed preferred embodiment, category of the present invention is limited.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention wish application.
Claims (17)
1. an audio and video transmitting set, comprising:
One power line communication module, in order to data are provided in a power line to synthesize a compound electric line of force signal with a power line signal, wherein these data comprise a voice data or an image data;
One light emission module, couples this power line, comprising:
One transmitting terminal power line communication unit, takes out this data in order to this compound electric line of force signal certainly;
One luminous driver element, couples this transmitting terminal power line communication unit, in order to a driving signal to be provided according to these data;
One luminous element, couples this luminous driver element, in order to send a light signal according to this driving signal;
One detecting unit; And
One separate bands signal transmitter unit, couples this detecting unit; And
One Optical Receivers, comprising:
One light receiving unit, this light signal sending in order to receive this luminous element;
One receiving terminal power line communication unit, couples this light receiving unit, in order to this light signal is reduced to this data;
One audio-visual reduction unit, couples this receiving terminal power line communication unit, in order to these data are converted to this voice data or this image data; And
One separate bands detecting signal unit;
Wherein, when this detecting unit detects this compound electric line of force signal and meets specified conditions, this detecting unit is controlled this separate bands signal transmitter unit and is sent a wireless signal that comprises a synchronizing signal, this separate bands detecting signal unit of this Optical Receivers receives this synchronizing signal in this wireless signal, so that this Optical Receivers can be synchronizeed with communication between this light emission module.
2. audio and video transmitting set as claimed in claim 1, is characterized in that, this Optical Receivers is a portable electronic devices.
3. audio and video transmitting set as claimed in claim 1, is characterized in that, this light emission module is arranged at a lamp socket or a bulb.
4. audio and video transmitting set as claimed in claim 1, is characterized in that, this wireless signal that this separate bands signal transmitter unit sends is an infrared ray, a deviated light or a less radio-frequency.
5. audio and video transmitting set as claimed in claim 1, is characterized in that, these specified conditions trigger for this compound electric line of force signal meets current zero phase sequence.
6. audio and video transmitting set as claimed in claim 1, is characterized in that, this power line communication module is received this data by a network from an audio-visual source termination.
7. audio and video transmitting set as claimed in claim 1, is characterized in that, this luminous element is visible light emitting diode.
8. a light emission module, is applied to the transmission of image or voice data, and this light emission module comprises:
One power line communication unit, couples a power line, in order to the compound electric line of force signal that this power line transmits certainly, obtains data, and wherein these data comprise an image data or a voice data;
One luminous driver element, couples this power line communication unit, in order to a driving signal to be provided according to these data;
One luminous element, couples this luminous driver element, in order to send a light signal according to this driving signal;
Whether one detecting unit, meet specified conditions in order to detect this compound electric line of force signal; And
One separate bands signal transmitter unit, couple this detecting unit, when this detecting unit detects this compound electric line of force signal and meets these specified conditions, this separate bands signal transmitter unit sends wireless signal to Optical Receivers that comprises a synchronizing signal, so that communication is synchronizeed between this Optical Receivers and this light emission module.
9. light emission module as claimed in claim 8, is characterized in that, this detecting unit couples this power line or is arranged in this power line communication unit.
10. light emission module as claimed in claim 8, is characterized in that, this power line communication unit also comprises:
One front-end circuit, in order to carry out Gain filter to this compound electric line of force signal; And
One medium access control circuit, couples this front-end circuit, in order to the compound electric of this after Gain filter line of force signal certainly, takes out this data.
11. light emission modules as claimed in claim 9, is characterized in that, this luminous driver element comprises:
One DC power generating circuit, couples this power line, in order to a DC current signal to be provided;
One voltage turns current amplification circuit, is coupled to this medium access control circuit, in order to these data that this medium access control circuit is taken out, is converted to an ac current signal output; And
One current adder circuit, is coupled between this DC power generating circuit and this luminous element, in order to this DC current signal and this ac current signal are coupled as to this driving signal.
12. light emission modules as claimed in claim 8, is characterized in that, this wireless signal that this separate bands signal transmitter unit sends is an infrared ray, a deviated light or a less radio-frequency.
13. light emission modules as claimed in claim 8, is characterized in that, these specified conditions trigger for this compound electric line of force signal meets current zero phase sequence.
14. 1 kinds of Optical Receivers, are applied to the transmission of image or sound, and this Optical Receivers comprises:
One light receiving unit, in order to receive the light signal being sent by a luminous element;
One power line communication unit, couples this light receiving unit, in order to this light signal certainly, takes out data;
One audio-visual reduction unit, couples this power line communication unit, in order to these data are reduced to an image data or a voice data; And
One separate bands detecting signal unit, in order to receive the synchronizing signal in the wireless signal that a light emission module sends, so that communication is synchronizeed between this Optical Receivers and this light emission module;
Wherein, this wireless signal that comprises this synchronizing signal is sent by this light emission module when meeting specified conditions.
15. Optical Receivers as claimed in claim 14, is characterized in that, this power line communication unit more comprises:
One front-end circuit, couples this light receiving unit, in order to this light signal is carried out to Gain filter; And
One medium access control circuit, couples this front-end circuit, in order to the light signal of this after Gain filter certainly, obtains this data.
16. Optical Receivers as claimed in claim 14, is characterized in that, are a portable electronic devices.
17. Optical Receivers as claimed in claim 14, is characterized in that, these specified conditions are that a compound electric line of force signal meets the triggering of current zero phase sequence.
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| 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 true CN104079350A (en) | 2014-10-01 |
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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 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104079350B (en) | 2019-07-19 |
| TWI474637B (en) | 2015-02-21 |
| TW201438415A (en) | 2014-10-01 |
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