CN101867412A - System and method for realizing communication by using semiconductor illumination - Google Patents
System and method for realizing communication by using semiconductor illumination Download PDFInfo
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- CN101867412A CN101867412A CN200910081993A CN200910081993A CN101867412A CN 101867412 A CN101867412 A CN 101867412A CN 200910081993 A CN200910081993 A CN 200910081993A CN 200910081993 A CN200910081993 A CN 200910081993A CN 101867412 A CN101867412 A CN 101867412A
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Abstract
The invention discloses a system for realizing communication by using semiconductor illumination, comprising optical signal transmitting equipment (1) and optical signal receiving equipment (2). The optical signal transmitting equipment (1) can be used for transforming the data to be transmitted into the optical signal. The optical signal receiving equipment (2) can be used for transforming the optical signal transmitted by the optical signal transmitting equipment (1) into the electrical signal and displaying the electrical signal. The invention also discloses a method for realizing communication by using semiconductor illumination. Because the high-speed communication is simultaneously realized by adjusting the white light emitting diode (LED) to illuminate, the requirements for transmitting the texts, the pictures, the audio, the video and the control signals of the printer, the air conditioner, the refrigerator and the like are met.
Description
Technical field
The present invention relates to the visible light communication technical field, relate in particular to a kind of system and method that utilizes semiconductor lighting to communicate.
Background technology
The wireless network of main flow mainly adopts radio frequency (radio frequency at present, RF) technology, in recent years, along with white light emitting diode (light emitting diode as follow-on main type of lighting, LED) develop rapidly uses the communication system of visible light to have stable development.Many excellent characteristic such as LED has high brightness, high reliability, energy loss is low and the life-span is long.A lot of in the world units begin the research (reference example such as document 1) of this respect and send in the communication system of LED as light source of white light at the light of employing by the three primary colors (also claiming RGB) of combinations red (R), green (G), blue (B) simultaneously, by having realized the composite visible light system of RGB visible light compound, realized high-speed communication (reference example such as patent documentation 2) need not to improve under the situation of modulating speed.
Document 1:T.D.C.Little, P.Dib, K.Shah, N.Barraford, and B.Gallagher, " Using LED Lighting for Ubiquitous Indoor Wireless Networking ", IEEE International Conference on Wireless ﹠amp; Mobile Computing, Networking ﹠amp; Communication, 2008, pp.373～378.
Patent documentation 2: the open No.200610151572.5 of Chinese patent application special permission
In the present invention, by adopting the white light LEDs that glimmers with the high speed that visually can't discern in illumination, to come transmission information.
Summary of the invention
(1) technical problem that will solve
The purpose of this invention is to provide a kind of system and method that utilizes semiconductor lighting to communicate, by the communication of modulation white light LEDs realization higher rate in illumination, to satisfy the demand that transmits text, picture, audio frequency and video and number control signal (as to printer, air-conditioning, refrigerator etc.).
(2) technical scheme
For achieving the above object, the invention provides a kind of system that utilizes semiconductor lighting to communicate, this system comprises the transfer equipment 1 that transmits light signal and the receiving equipment 2 of receiving optical signals, transfer equipment 1 will be to be transmitted transformation of data become light signal to transmit, the light signal that receiving equipment 2 will be received from transfer equipment 1 converts the signal of telecommunication to, and shows.
In the such scheme, described transfer equipment 1 comprises:
Signal transfer member 10 is used for data to be transmitted being encoded with predetermined form and exporting to signal modulating part 11;
Signal modulating part 11, the data-modulated that is used for signal transfer member 10 is imported is to the LED driver part;
LED driver part 12; Be used to control the LED lamp of lighting 13, become light signal to send transformation of data to be transmitted by LED lamp 13; And
LED lamp 13 is used for illumination and visible emitting signal.
In the such scheme, described receiving equipment 2 comprises:
Light-receiving member 20 is used to receive the visible light signal that sends from LED lamp 13, converts the visible light signal that receives to the signal of telecommunication, and exports to signal processing and demodulation parts 21;
Signal processing and demodulation parts 21 are used for the signal of telecommunication after light-receiving member 20 conversions is carried out signal processing, comprise at least and amplifying and filtering, and export to signal reception and display unit 22; And
Signal receives and display unit 22, and the signal that is used for being received from signal processing and demodulation parts 21 shows in the corresponding way.
In the such scheme, described signal receive with display unit 22 be the equipment of videotex, picture or audio frequency and video, or controlled printer, household electrical appliances.
In the such scheme, described signal receives with display unit 22 signal is shown in the corresponding way, is to finish response to the control signal that transmits with text, picture or audio frequency and video.
In the such scheme, described LED lamp 13 is a power type LED lamp, is used for realizing communication in illumination.
For achieving the above object, the present invention also provides a kind of method of utilizing semiconductor lighting to communicate, and this method comprises:
Transfer equipment will be to be transmitted transformation of data become light signal to transmit; And
The light signal that receiving equipment will be received from transfer equipment converts the signal of telecommunication to, and shows.
In the such scheme, described transfer equipment comprises signal transfer member, signal modulating part, LED driver part and LED lamp, described transfer equipment will be to be transmitted transformation of data become light signal to transmit to comprise: the data that the signal transfer member will be to be transmitted are encoded with predetermined form and are exported, the signal modulating part with the data-modulated of signal transfer member input to the LED driver part, the LED driver part that has added modulation signal is controlled the LED lamp of lighting, and becomes light signal to send by the LED lamp transformation of data to be transmitted.
In the such scheme, to the LED driver part, the modulator approach of employing comprises amplitude modulation, frequency modulation and pulse modulation to described signal modulating part at least with the data-modulated of signal transfer member input.
In the such scheme, described receiving equipment comprises that light-receiving member, signal processing and demodulation parts and signal receive and display unit, the light signal that described receiving equipment will be received from transfer equipment converts the signal of telecommunication to, and show and comprise: after transfer equipment receives visible light signal, light-receiving member converts the light signal that receives to the corresponding signal of telecommunication, because the signal of telecommunication of this moment is very faint, need carry out signal processing, mainly comprises and amplifying and filtering; Signal demodulation section is carried out demodulation process with the signal of telecommunication after treatment, converts the transmission data that transmit target to; Signal receives the signal that signal processing and demodulation parts is sent with display unit and receives and show.
(3) beneficial effect
This system and method that utilizes semiconductor lighting to communicate provided by the invention, by the communication of modulation white light LEDs realization higher rate in illumination, satisfied the demand of transmission text, picture, audio frequency and video and number control signal (as to printer, air-conditioning, refrigerator etc.).
Description of drawings
For further specifying concrete technology contents of the present invention, be described in detail as follows below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is a basic application mode of utilizing the system and method that semiconductor lighting communicates provided by the invention;
Fig. 2 is a block diagram of utilizing the system that semiconductor lighting communicates provided by the invention;
Fig. 3 is the flow chart that signal transmits in the method that semiconductor lighting communicates that utilizes provided by the invention;
Fig. 4 is the flow chart that signal receives in the method that semiconductor lighting communicates that utilizes provided by the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
The described light of present embodiment is visible light, below repeats no more.Fig. 2 shows the block diagram of utilizing the system that semiconductor lighting communicates provided by the invention.System comprises and is connected to for example personal computer (Personal Computer, transfer equipment 1 PC) and be built in receiving equipment 2 in the AV device for example in this embodiment.This system adopts illumination light to finish data communication.Need not to explain that transfer equipment 1 and receiving equipment 2 are not limited to built-in equipment, and can be outside attached type equipment.
Transfer equipment 1 comprises signal transfer member 10, signal modulating part 11, LED driver part 12 and LED lamp 13.Signal transfer member 10 for example digital audio-video signal is exported as transmitting data.As describing afterwards, the data-modulated that signal modulating part 11 will transmit is to the LED lamp.
LED lamp 13 comes luminous according to LED driver part (majority is a constant-current source) 12 power that provide, in illumination and transmit signal.
On the other hand, receiving equipment 2 comprises that light-receiving member 20, signal processing and demodulation parts 21 and signal receive and display unit 22.Light-receiving member 20 converts the light signal on the LED lamp 13 that receives to the signal of telecommunication and outputs on signal processing and the demodulation parts 21.Signal processing and demodulation parts 21 are handled the signal of telecommunication of receiving the transmission data that are demodulated to the transmission end.Further, signal receives and the transmission data of 22 pairs of signal processing of display unit and 21 demodulation of demodulation parts show, such as playing the audio, video data that transmits.
Next, be described with reference to data communication operation present embodiment.At first the signal transmission flow chart with reference to Fig. 3 carries out concrete description to the course of work of transfer equipment 1.
At first, signal transmission apparatus 10 will as the signal that transmits target for example digital audio-video signal as transmitting data (encoding with predetermined form usually) output (step S 1).The signal that signal modulating part 11 is come signal transmission apparatus 10 is modulated to (step S2) on the LED driver part 12.Subsequently, the LED that has added modulation signal drives the LED (step S3) that 12 controls are lighted, and becomes light signal to transmit (step S4) signal transition to be transmitted.The modulation system here has multiple, can adopt the modulator approach such as AM (amplitude modulation), FM (frequency modulation) and PM (pulse modulation) and so on.
Next, the signal reception flow chart with reference to Fig. 4 carries out concrete description to the course of work of receiving equipment 2.
After transfer equipment 1 receives visible light signal, light-receiving member 20 converts the light signal that receives to the corresponding signal of telecommunication (step S11).Because the signal of telecommunication of this moment is very faint, need carry out signal processing, mainly comprises (step S12) such as amplification, filtering.Signal demodulation section 21 is carried out demodulation process with the signal of telecommunication after treatment, converts the transmission data (step S13) that transmit target to.Further, the signal that signal reception and 22 pairs of signal processing of display unit and demodulation parts 21 send receives and shows, for example plays the audio, video data (step S14) that sends.
As mentioned above, according to the semiconductor lighting communication system of present embodiment, transfer equipment 1 can will wait that transmitting data transmits as light signal, in illumination, finishes communication.
In particular, for example, by transfer equipment 1 with the audio-video signal data as light signal from for example sending out the personal computer, the AV device receives visible light signal by receiving equipment 2, thereby can regenerate audio, video data.Therefore be under the situation of music data at audio, video data, realize a kind of like this system: this system will be stored in the wireless AV of sending to the device of music data in the personal computer, and by AV device regeneration music.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. system that utilizes semiconductor lighting to communicate, it is characterized in that, this system comprises the transfer equipment (1) that transmits light signal and the receiving equipment (2) of receiving optical signals, transfer equipment (1) will be to be transmitted transformation of data become light signal to transmit, the light signal that receiving equipment (2) will be received from transfer equipment (1) converts the signal of telecommunication to, and shows.
2. the system that utilizes semiconductor lighting to communicate according to claim 1 is characterized in that, described transfer equipment (1) comprising:
Signal transfer member (10) is used for data to be transmitted being encoded with predetermined form and exporting to signal modulating part (11);
Signal modulating part (11), the data-modulated that is used for signal transfer member (10) is imported is to the LED driver part;
LED driver part (12); Be used to control the LED lamp of lighting (13), become light signal to pass through LED lamp (13) transformation of data to be transmitted and send; And
LED lamp (13) is used for illumination and visible emitting signal.
3. the system that utilizes semiconductor lighting to communicate according to claim 2 is characterized in that, described receiving equipment (2) comprising:
Light-receiving member (20) is used for receiving the visible light signal that sends from LED lamp (13), converts the visible light signal that receives to the signal of telecommunication, and exports to signal processing and demodulation parts (21);
Signal processing and demodulation parts (21) are used for the signal of telecommunication after light-receiving member (20) conversion is carried out signal processing, comprise at least and amplifying and filtering, and export to signal reception and display unit (22); And
Signal receives and display unit (22), and the signal that is used for being received from signal processing and demodulation parts (21) shows in the corresponding way.
4. the system that utilizes semiconductor lighting to communicate according to claim 3 is characterized in that, described signal receive with display unit (22) be the equipment of videotex, picture or audio frequency and video, or controlled printer, household electrical appliances.
5. the system that utilizes semiconductor lighting to communicate according to claim 4, it is characterized in that, described signal receives with display unit (22) signal is shown in the corresponding way, is to finish response to the control signal that transmits with text, picture or audio frequency and video.
6. the system that utilizes semiconductor lighting to communicate according to claim 2 is characterized in that, described LED lamp (13) is a power type LED lamp, is used for realizing communication in illumination.
7. a method of utilizing semiconductor lighting to communicate is characterized in that, this method comprises:
Transfer equipment will be to be transmitted transformation of data become light signal to transmit; And
The light signal that receiving equipment will be received from transfer equipment converts the signal of telecommunication to, and shows.
8. the method for utilizing semiconductor lighting to communicate according to claim 7, it is characterized in that, described transfer equipment comprises signal transfer member, signal modulating part, LED driver part and LED lamp, and the transformation of data that described transfer equipment will be to be transmitted becomes light signal to transmit to comprise:
The signal transfer member will be to be transmitted data encode with predetermined form and export, the signal modulating part with the data-modulated of signal transfer member input to the LED driver part, the LED driver part that has added modulation signal is controlled the LED lamp of lighting, and becomes light signal to send by the LED lamp transformation of data to be transmitted.
9. the method for utilizing semiconductor lighting to communicate according to claim 8, it is characterized in that, to the LED driver part, the modulator approach of employing comprises amplitude modulation, frequency modulation and pulse modulation to described signal modulating part at least with the data-modulated of signal transfer member input.
10. the method for utilizing semiconductor lighting to communicate according to claim 7, it is characterized in that, described receiving equipment comprises that light-receiving member, signal processing and demodulation parts and signal receive and display unit, the light signal that described receiving equipment will be received from transfer equipment converts the signal of telecommunication to, and shows and comprise:
After transfer equipment receives visible light signal, light-receiving member converts the light signal that receives to the corresponding signal of telecommunication, because the signal of telecommunication of this moment is very faint, need carry out signal processing, mainly comprises and amplifying and filtering; Signal demodulation section is carried out demodulation process with the signal of telecommunication after treatment, converts the transmission data that transmit target to; Signal receives the signal that signal processing and demodulation parts is sent with display unit and receives and show.
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| CN200910081993A CN101867412A (en) | 2009-04-15 | 2009-04-15 | System and method for realizing communication by using semiconductor illumination |
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| CN200910081993A CN101867412A (en) | 2009-04-15 | 2009-04-15 | System and method for realizing communication by using semiconductor illumination |
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Application publication date: 20101020 |