CN105812055A - Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module - Google Patents
Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module Download PDFInfo
- Publication number
- CN105812055A CN105812055A CN201610200828.0A CN201610200828A CN105812055A CN 105812055 A CN105812055 A CN 105812055A CN 201610200828 A CN201610200828 A CN 201610200828A CN 105812055 A CN105812055 A CN 105812055A
- Authority
- CN
- China
- Prior art keywords
- rgbled
- data
- module
- shunt
- bias voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Bidirectional Digital Transmission (AREA)
Abstract
The invention discloses a half-duplex time division bidirectional visible light communication method and system of an RGB LED module. When REB LEDs work in a half-duplex mode, the REB LEDs can transmit data as light sources and also can receive data as photoelectric detectors, and therefore, the cost of the extra photoelectric detectors is reduced. Compared with the method and the system for providing uplink service by using infrared light or WiFi in existing visible light communication, the method and the system have the advantages that extra transmission media are unnecessary, both of an uplink and a downlink transmit the data by using visible light, and the realization complexity of the system is effectively reduced.
Description
Technical field
The present invention relates to visible light communication field, particularly relate to the method and system of a kind of half-duplex time-division two-way visible light communication of RGBLED module.
Background technology
Visible light communication technology is that strength signal is modulated on visible LED by one, adopts photoelectric detection equipment to carry out the communication technology detected.LED is because of its higher light efficiency, low-power consumption, longer service life, green energy conservation, it is more likely that become new lighting source.Play on the one hand the illumination advantage of LED in conjunction with the visible light communication technology of LED, communication function has been combined with lighting engineering simultaneously, attracted extensive concern and the research of scientific circles.Along with going deep into progressively ripe visible light communication technical research, it is seen that optical communication technique has also progressively attracted the attention of industrial quarters.
At present, the research of visible light communication being mostly focused on and how to improve in the transfer rate of communication system, be limited in that, LED therein is mostly as sending light source, it is provided that the data transport service of uni-directional downlink.Actual communication system, not only needs downlink, must also provide the data transport service of up-link simultaneously.Existing relevant research, utilizes infrared light or Wifi, it is provided that the data transport service of up-link, as a kind of auxiliary of visible light communication technology, it practice, the communication system implementation complexity of this multimode is significantly high undoubtedly.Although it addition, having had literature research R/G/BLED to send and signal receiver part simultaneously as signal.But, the R/G/B LED modules with different colors in these documents is all independent driving, can produce the interference of optical signal, reduce the Signal to Interference plus Noise Ratio of visible light communication system between the independent LED modules with different colors driven.
Summary of the invention
It is an object of the invention to provide the method and system of a kind of half-duplex time-division two-way visible light communication of RGBLED module, the advantage with low complex degree and low cost.
It is an object of the invention to be achieved through the following technical solutions:
A kind of method of the half-duplex time-division two-way visible light communication of RGBLED module, including:
Adopting time-multiplexed mode to divide the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
In the data of downlink are transmitted, by increasing certain forward bias voltage on a described RGBLED, make a RGBLED present light source characteristic, and drive module to be loaded on a RGBLED then through by the first shunt by first modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, by increasing certain forward bias voltage on described 2nd RGBLED, make the 2nd RGBLED present light source characteristic, and drive module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
Further, first and second RGBLED is by the trichroism RGBLED composition being connected in series.
Further, first and second shunt includes a switch chip, and comprises tri-ports of A, B, C, and wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
Further, when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K.
Further, when reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
A kind of system of the half-duplex time-division two-way visible light communication of RGBLED module, including:
The RGBLED module being made up of the first shunt, a RGBLED, the first receiver module and the first driving module, and the 2nd RGBLED module being made up of the second shunt, the 2nd RGBLED, the second receiver module and the second driving module；
Adopting time-multiplexed mode to divide the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
In the data of downlink are transmitted, a RGBLED module is as data sending terminal, and the 2nd RGBLED module is as data receiver；By increasing certain forward bias voltage on a described RGBLED so that a RGBLED presents light source characteristic, and drives module to be loaded on a RGBLED then through by the first shunt by first modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, the 2nd RGBLED module is as data sending terminal, and a RGBLED module is as data receiver；By increasing certain forward bias voltage on described 2nd RGBLED so that the 2nd RGBLED presents light source characteristic, and drives module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
Further, first and second RGBLED is by the trichroism RGBLED composition being connected in series.
Further, first and second shunt includes a switch chip, and comprises tri-ports of A, B, C, and wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
Further, when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K.
Further, when reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
As seen from the above technical solution provided by the invention, RGBLED works in a half-duplex mode, can send data as light source, also can receive data as photodetector, save the cost of additional light electric explorer；Compared with utilizing infrared light or Wifi offer uplink service in existing visible light communication, the present invention adopts visible ray to carry out data transmission without extra transmission medium, up-link and downlink, effectively reduces the complexity that system realizes.Additionally, the LED of R/G/BLED different colours is one another in series together in this programme, this structure can improve the R/G/BLED capacity of resisting disturbance simultaneously as wireless optical signal transmission and the visible light communication system of wireless optical signal receiving terminal.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawings according to these accompanying drawings.
The principle schematic of a kind of half-duplex time-division two-way visible light communication of RGBLED module that Fig. 1 provides for the embodiment of the present invention；
The shunt schematic diagram that Fig. 2 provides for the embodiment of the present invention；
The schematic diagram of the data receiver that Fig. 3 provides for the embodiment of the present invention and data sending terminal time synchronized establishment stage；
The schematic diagram of the two-way link establishment stage that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into protection scope of the present invention.
The embodiment of the present invention provides a kind of method of half-duplex time-division two-way visible light communication of RGBLED module, comprising:
Adopting time-multiplexed mode to divide the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
As shown in Figure 1, in the data of downlink are transmitted, by increasing certain forward bias voltage on a described RGBLED, a RGBLED is made to present light source characteristic, and drive module to be loaded on a RGBLED then through by the first shunt by first modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, by increasing certain forward bias voltage on described 2nd RGBLED, make the 2nd RGBLED present light source characteristic, and drive module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
In the embodiment of the present invention, first and second RGBLED is by the trichroism RGBLED composition being connected in series；This structure can improve the R/G/BLED capacity of resisting disturbance simultaneously as wireless optical signal transmission and the visible light communication system of wireless optical signal receiving terminal.
As in figure 2 it is shown, first and second shunt includes a switch chip, and comprising tri-ports of A, B, C, wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
In the embodiment of the present invention, when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K；When reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
Preferably, before carrying out data transmission, in addition it is also necessary to carry out the time synchronized of data receiver and data sending terminal, its process is as shown in Figure 3.Afterwards, resettle two-way link as shown in Figure 4 to carry out data transmission.
On the other hand, the embodiment of the present invention also provides for the system of a kind of half-duplex time-division RGBLED module two-way visible light communication corresponding with preceding method, comprising:
Adopt the RGBLED module that time-multiplexed mode is driven module to form by the first shunt, a RGBLED, the first receiver module and first and the 2nd RGBLED module being made up of the second shunt, the 2nd RGBLED, the second receiver module and the second driving module；
Dividing the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
See also Fig. 1, in the data of downlink are transmitted, a RGBLED module is as data sending terminal, and the 2nd RGBLED module is as data receiver；By increasing certain forward bias voltage on a described RGBLED so that a RGBLED presents light source characteristic, and drives module to be loaded on a RGBLED then through by the first shunt by first modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, the 2nd RGBLED module is as data sending terminal, and a RGBLED module is as data receiver；By increasing certain forward bias voltage on described 2nd RGBLED so that the 2nd RGBLED presents light source characteristic, and drives module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
In the embodiment of the present invention, first and second RGBLED is by the trichroism RGBLED composition being connected in series.
See also Fig. 2, first and second shunt includes a switch chip, and comprises tri-ports of A, B, C, and wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
In the embodiment of the present invention, when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K；When reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
Preferably, before carrying out data transmission, in addition it is also necessary to carry out the time synchronized of data receiver and data sending terminal, its process is referring to Fig. 3.Afterwards, resettle two-way link as shown in Figure 4 to carry out data transmission.
It addition, it will be understood by those skilled in the art that the embodiment of the present invention occurs first, second only for distinguishing identical device.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope of present disclosure; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. the method for the half-duplex time-division two-way visible light communication of RGBLED module, it is characterised in that including:
Adopting time-multiplexed mode to divide the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
In the data of downlink are transmitted, by increasing certain forward bias voltage on a described RGBLED, make a RGBLED present light source characteristic, and drive module to be loaded on a RGBLED then through by the first shunt by first modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, by increasing certain forward bias voltage on described 2nd RGBLED, make the 2nd RGBLED present light source characteristic, and drive module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, complete the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
2. method according to claim 1, it is characterised in that first and second RGBLED is by the trichroism RGBLED composition being connected in series.
3. method according to claim 1, it is characterised in that first and second shunt includes a switch chip, and comprise tri-ports of A, B, C, wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
4. method according to claim 1, it is characterised in that when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K.
5. method according to claim 1, it is characterised in that when reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
6. the system of the half-duplex time-division two-way visible light communication of RGBLED module, it is characterised in that including:
The RGBLED module being made up of the first shunt, a RGBLED, the first receiver module and the first driving module, and the 2nd RGBLED module being made up of the second shunt, the 2nd RGBLED, the second receiver module and the second driving module；
Adopting time-multiplexed mode to divide the time into isometric two isochronous surface, one of them isochronous surface carries out the data transmission of up-link, and another isochronous surface carries out the data transmission of downlink；
In the data of downlink are transmitted, a RGBLED module is as data sending terminal, and the 2nd RGBLED module is as data receiver；By increasing certain forward bias voltage on a described RGBLED so that a RGBLED presents light source characteristic, and drives module to be loaded on a RGBLED then through by the first shunt by first modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on described 2nd RGBLED, the 2nd RGBLED is made to present photodetector characteristic, the oneth RGBLED data signal sent is detected, then through the reception being completed data signal by the second shunt by the second receiver module；
In the data of up-link are transmitted, the 2nd RGBLED module is as data sending terminal, and a RGBLED module is as data receiver；By increasing certain forward bias voltage on described 2nd RGBLED so that the 2nd RGBLED presents light source characteristic, and drives module to be loaded on the 2nd RGBLED then through by the second shunt by second modulation signal, completes the transmission of data；By increasing certain reverse bias voltage on a described RGBLED, a RGBLED is made to present photodetector characteristic, the 2nd RGBLED data signal sent is detected, then through the reception being completed data signal by the first shunt by the first receiver module.
7. system according to claim 6, it is characterised in that first and second RGBLED is by the trichroism RGBLED composition being connected in series.
8. system according to claim 6, it is characterised in that first and second shunt includes a switch chip, and comprise tri-ports of A, B, C, wherein, port A is connected with switch chip, and port B and C is connected with port A with full state by the rise of switch chip.
9. system according to claim 6, it is characterised in that when forward bias voltage drives, RGBLED sends colour developing is more than 90, and colour temperature is the white light of 3000K-5000K.
10. system according to claim 6, it is characterised in that when reverse bias voltage drives, the photoelectric transformation efficiency of RGBLED is more than 0.4A/W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200828.0A CN105812055B (en) | 2016-03-30 | 2016-03-30 | The method and system of the half-duplex time-division two-way visible light communication of RGB LED modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200828.0A CN105812055B (en) | 2016-03-30 | 2016-03-30 | The method and system of the half-duplex time-division two-way visible light communication of RGB LED modules |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105812055A true CN105812055A (en) | 2016-07-27 |
| CN105812055B CN105812055B (en) | 2018-05-01 |
Family
ID=56460013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610200828.0A Active CN105812055B (en) | 2016-03-30 | 2016-03-30 | The method and system of the half-duplex time-division two-way visible light communication of RGB LED modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105812055B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533561A (en) * | 2016-10-18 | 2017-03-22 | 河北师范大学 | Single-lamp visible light duplex communication system, and uplink and downlink time division method thereof |
| CN106953691A (en) * | 2017-04-20 | 2017-07-14 | 上海第二工业大学 | A kind of time-multiplexed visible ray full duplex communication system of up-downgoing and method |
| CN106961309A (en) * | 2017-05-31 | 2017-07-18 | 中国科学技术大学 | A kind of VLC transceiver and visible light communication system |
| WO2018097798A1 (en) * | 2016-11-23 | 2018-05-31 | Agency For Science, Technology And Research | Light emitting diode communication device, method of forming and operating the same |
| CN112235047A (en) * | 2020-10-14 | 2021-01-15 | 厦门大学 | Screen two-way communication system based on visible light communication |
| CN112532317A (en) * | 2020-11-27 | 2021-03-19 | 中国科学技术大学 | Optical antenna based on multi-color visible light communication system |
| CN114124219A (en) * | 2021-11-26 | 2022-03-01 | 浙江大学 | Detection bandwidth improving method based on series light emitting diode array applied to underwater wireless optical communication system |
| CN114268370A (en) * | 2021-12-31 | 2022-04-01 | 天津市滨海新区信息技术创新中心 | Single-optical-fiber half-duplex visible light communication chip |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032891A (en) * | 1987-10-24 | 1989-05-10 | 电缆金属电气有限公司 | Light signal is by the bidirectional transmission method of light wave guide |
| CN1110813A (en) * | 1993-02-03 | 1995-10-25 | 株式会社日立制作所 | Information transmitting/processing system |
| CN1515090A (en) * | 2002-04-03 | 2004-07-21 | ������������ʽ���� | Optical communication transceriver and method for receiving and transmitting data |
| CN1607748A (en) * | 2003-09-30 | 2005-04-20 | 英特尔公司 | Optical transceiver over single communication link |
| JP3925925B2 (en) * | 2003-05-20 | 2007-06-06 | ケル株式会社 | Bidirectional optical transceiver circuit |
| CN101558588A (en) * | 2006-11-30 | 2009-10-14 | 皇家飞利浦电子股份有限公司 | Intrinsic flux sensing |
| US20140099107A1 (en) * | 2012-10-09 | 2014-04-10 | Booz, Allen & Hamilton | Method and system for data transmission and communication using imperceptible differences in visible light |
| CN104079352A (en) * | 2014-06-13 | 2014-10-01 | 北京邮电大学 | Visible light communication device used for ships |
| CN104333418A (en) * | 2014-09-01 | 2015-02-04 | 中国科学院半导体研究所 | Display and communication dual-purpose visible light module |
| US8957587B2 (en) * | 2010-09-20 | 2015-02-17 | Disney Enterprises, Inc. | Systems and methods to communicate and control actions using light emitting diodes |
| CN105281836A (en) * | 2015-11-13 | 2016-01-27 | 中国电子科技集团公司第五十四研究所 | Visible light communication system based on pre-emphasis circuit and method thereof |
-
2016
- 2016-03-30 CN CN201610200828.0A patent/CN105812055B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032891A (en) * | 1987-10-24 | 1989-05-10 | 电缆金属电气有限公司 | Light signal is by the bidirectional transmission method of light wave guide |
| CN1110813A (en) * | 1993-02-03 | 1995-10-25 | 株式会社日立制作所 | Information transmitting/processing system |
| CN1515090A (en) * | 2002-04-03 | 2004-07-21 | ������������ʽ���� | Optical communication transceriver and method for receiving and transmitting data |
| CN100393006C (en) * | 2002-04-03 | 2008-06-04 | 三菱电机株式会社 | Optical communication transceriver and method for receiving and transmitting data |
| JP3925925B2 (en) * | 2003-05-20 | 2007-06-06 | ケル株式会社 | Bidirectional optical transceiver circuit |
| CN1607748A (en) * | 2003-09-30 | 2005-04-20 | 英特尔公司 | Optical transceiver over single communication link |
| CN101558588A (en) * | 2006-11-30 | 2009-10-14 | 皇家飞利浦电子股份有限公司 | Intrinsic flux sensing |
| US8957587B2 (en) * | 2010-09-20 | 2015-02-17 | Disney Enterprises, Inc. | Systems and methods to communicate and control actions using light emitting diodes |
| US20140099107A1 (en) * | 2012-10-09 | 2014-04-10 | Booz, Allen & Hamilton | Method and system for data transmission and communication using imperceptible differences in visible light |
| CN104079352A (en) * | 2014-06-13 | 2014-10-01 | 北京邮电大学 | Visible light communication device used for ships |
| CN104333418A (en) * | 2014-09-01 | 2015-02-04 | 中国科学院半导体研究所 | Display and communication dual-purpose visible light module |
| CN105281836A (en) * | 2015-11-13 | 2016-01-27 | 中国电子科技集团公司第五十四研究所 | Visible light communication system based on pre-emphasis circuit and method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533561A (en) * | 2016-10-18 | 2017-03-22 | 河北师范大学 | Single-lamp visible light duplex communication system, and uplink and downlink time division method thereof |
| US10666357B2 (en) | 2016-11-23 | 2020-05-26 | Agency For Science, Technology And Research | Light emitting diode communication device, method of forming and operating the same |
| WO2018097798A1 (en) * | 2016-11-23 | 2018-05-31 | Agency For Science, Technology And Research | Light emitting diode communication device, method of forming and operating the same |
| US10826608B2 (en) | 2016-11-23 | 2020-11-03 | Agency For Science, Technology And Research | Light emitting diode communication device, method of forming and operating the same |
| CN106953691B (en) * | 2017-04-20 | 2020-02-28 | 上海第二工业大学 | Uplink and downlink time division multiplexing visible light full duplex communication system and method |
| CN106953691A (en) * | 2017-04-20 | 2017-07-14 | 上海第二工业大学 | A kind of time-multiplexed visible ray full duplex communication system of up-downgoing and method |
| CN106961309A (en) * | 2017-05-31 | 2017-07-18 | 中国科学技术大学 | A kind of VLC transceiver and visible light communication system |
| CN106961309B (en) * | 2017-05-31 | 2019-06-21 | 中国科学技术大学 | A kind of VLC transceiver and visible light communication system |
| US11374653B2 (en) | 2017-05-31 | 2022-06-28 | University Of Science And Technology Of China | Visible light communication transceiver and visible light communication system |
| CN112235047A (en) * | 2020-10-14 | 2021-01-15 | 厦门大学 | Screen two-way communication system based on visible light communication |
| CN112532317A (en) * | 2020-11-27 | 2021-03-19 | 中国科学技术大学 | Optical antenna based on multi-color visible light communication system |
| CN114124219A (en) * | 2021-11-26 | 2022-03-01 | 浙江大学 | Detection bandwidth improving method based on series light emitting diode array applied to underwater wireless optical communication system |
| CN114268370A (en) * | 2021-12-31 | 2022-04-01 | 天津市滨海新区信息技术创新中心 | Single-optical-fiber half-duplex visible light communication chip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105812055B (en) | 2018-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105812055A (en) | Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module | |
| Leba et al. | LiFi—The path to a new way of communication | |
| CN102227883B (en) | Apparatus for transmitting and receiving visible light communication data | |
| CN104980225B (en) | A kind of optical module of the interior transparent transmission monitoring signal of band based on amplitude modulation(PAM) | |
| CN204089821U (en) | A kind of visible light communication system | |
| Ismail et al. | A review of visible light communication (VLC) technology | |
| CN102457331A (en) | Method for utilizing LED illumination light to realize wireless local area network communication | |
| CN103825656A (en) | Visible light communication system based on TCP/IP and method | |
| CN104967487B (en) | A kind of optical module based on transparent transmission monitoring signal in warbled band | |
| CN104079352A (en) | Visible light communication device used for ships | |
| Tiwari et al. | Color coded multiple access scheme for bidirectional multiuser visible light communications in smart home technologies | |
| CN204180082U (en) | For the visible light communication device of boats and ships | |
| CN103701528B (en) | A kind of visible light communication transmitter of compatible MIMO and SISO communication pattern and launching technique | |
| CN105323003A (en) | Optical communication system and optical communication method | |
| CN106301561A (en) | A kind of wireless light communication device based on illumination LED and control method thereof | |
| CN104038286B (en) | Communication system | |
| Idris et al. | A survey of modulation schemes in visible light communications | |
| CN103840880A (en) | Visible light communication networking structure and method based on NLOS link | |
| CN204614199U (en) | A kind of power line carrier data communication apparatus | |
| CN107707302A (en) | LED-based closely point-to-point high speed and bidirectional data transfers system | |
| Han et al. | Design of 100Mbps white light LED based visible light communication system | |
| CN205693676U (en) | A kind of LED-based free-space optics access network device | |
| CN203722637U (en) | LED white light communication adapter system | |
| Xi et al. | A visible light communication system demonstration based on 16-level pulse amplitude modulation of an LED array | |
| CN106130637A (en) | A kind of LED-based visible light communication system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |