CN111107329A - Light propagation communication system for television media - Google Patents
Light propagation communication system for television media Download PDFInfo
- Publication number
- CN111107329A CN111107329A CN201811248570.7A CN201811248570A CN111107329A CN 111107329 A CN111107329 A CN 111107329A CN 201811248570 A CN201811248570 A CN 201811248570A CN 111107329 A CN111107329 A CN 111107329A
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- CN
- China
- Prior art keywords
- clock
- data recovery
- recovery circuit
- light
- photodiode
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- 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.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides a light transmission communication system for television media, which comprises: the transmitting terminal comprises a converter for converting a communication signal into a current pulse, a clock and data recovery circuit connected with the converter, and an LED array connected with the clock and data recovery circuit, wherein the LED array emits light according to the received current pulse, and the receiving terminal comprises: the system comprises a photodiode, a clock and data recovery circuit connected with the photodiode, and a decoder connected with the clock and data recovery circuit. The invention has the beneficial effects that: information is transmitted through visible light, and visible light communication is transmitted by means of optical signals of the visible light, is different from wireless communication, does not generate electromagnetic radiation, is different from optical fiber communication, does not depend on any transmission medium, is realized by means of free transmission of light in an open space environment, and can also realize a certain lighting function.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a light propagation communication system for television media.
Background
In the conventional communication field, there are several communication methods as follows:
1) the transmission end and the receiving end are connected by a cable for wired communication, and information is transmitted from the transmission end to the receiving end by an electric signal.
2) In the wireless communication, information is loaded on a high-frequency signal at a transmitting end and radiated to the space through an antenna, and a receiving end receives the signal radiated from the space, demodulates the signal and restores the signal into useful original information.
3) The optical fiber communication is characterized in that a sending end and a receiving end are connected through optical fibers, information is modulated into optical signals at the sending end, the optical information is sent to the receiving end through the optical fibers, the receiving end receives the optical signals, the optical signals are demodulated, and the optical signals are restored to original information.
The transmission modes have great limitations, namely, the first mode is high in cost and higher in maintenance cost, the second mode is lower in cost, but signals are transmitted in a radiation mode, unnecessary electromagnetic pollution is brought, and the human body is damaged by too strong electromagnetic radiation. Thirdly, the cost is not low, a special optical cable needs to be erected, and necessary maintenance needs to be carried out.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-precision environment-friendly light propagation communication system pen point for television media.
The invention is realized by the technical scheme that: the invention provides a light transmission communication system for television media, which comprises: the communication terminal comprises a transmitting terminal and a receiving terminal, wherein the transmitting terminal comprises a converter for converting a communication signal into a current pulse, a clock and data recovery circuit connected with the converter, and an LED array connected with the clock and data recovery circuit, the LED array emits light according to the received current pulse, and the receiving terminal comprises: the device comprises a photodiode, a clock and data recovery circuit connected with the photodiode, and a decoder connected with the clock and data recovery circuit.
Preferably, the receiving terminal further includes a convex lens disposed in front of the photodiode.
Preferably, the receiving terminal further comprises a preamplifier disposed between the photodiode and the clock and data recovery circuit.
Preferably, the emitting end further comprises a convex lens disposed in front of the LED array.
The invention has the beneficial effects that: information is transmitted through visible light, and visible light communication is transmitted by means of optical signals of the visible light, is different from wireless communication, does not generate electromagnetic radiation, is different from optical fiber communication, does not depend on any transmission medium, is realized by means of free transmission of light in an open space environment, and can also realize a certain lighting function.
Drawings
Fig. 1 is a schematic structural diagram of a light propagation communication system for television media according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a light propagation communication system for television media according to the present invention.
The embodiment of the invention provides a light propagation communication system for television media, which comprises: a transmitting terminal and a receiving terminal, wherein the transmitting terminal includes a converter for converting a communication signal into a current pulse, a clock and data recovery Circuit (CDR) connected to the converter, and an LED array connected to the clock and data recovery circuit, the LED array emitting light according to the received current pulse, the receiving terminal includes: a photodiode, a clock and data recovery circuit connected to the Photodiode (PD), and a decoder connected to the clock and data recovery circuit.
As can be seen from the above description, the light propagation communication system for television media according to the present embodiment transmits information through visible light, and visible light communication is transmitted by means of optical signals of visible light, which is different from wireless communication, does not generate electromagnetic radiation, is different from optical fiber communication, does not depend on any transmission medium, is implemented by means of free transmission of light in an open space environment, and can also implement a certain lighting function.
Preferably, the receiving terminal further includes a convex lens disposed in front of the photodiode. Enabling the emitted optical signal to travel a greater distance.
Preferably, the receiving terminal further comprises a preamplifier disposed between the photodiode and the clock and data recovery circuit. Facilitating the processing of the signal.
Preferably, the emitting end further comprises a convex lens disposed in front of the LED array. Thereby enabling the receiving terminal to better receive the transmitted optical signal.
For the sake of understanding the light propagation communication system for television media provided in this embodiment, the working principle thereof will be described in detail below.
The transmitting end serializes data and forms voltage pulses, converts the voltage pulses into current pulses, and controls the LED array to transmit optical signals through the converted current pulses; specifically, the on and off of the LED array is controlled through current pulses, and at the moment, optical signals are sent in a broadcasting mode; converting the pulse into a bit sequence through a preamplifier and a clock and data recovery circuit, deserializing and decoding to recover an original signal; specifically, after receiving the optical signal, the photodiode converts the pulse into a bit sequence through a preamplifier and a clock and data recovery circuit, deserializes the bit sequence, and decodes the bit sequence to recover the original signal.
As can be seen from the above description, the light propagation communication system for television media according to the embodiment of the present invention transmits information through visible light, and visible light communication is transmitted by means of optical signals of visible light, and unlike wireless communication, does not generate electromagnetic radiation, and unlike optical fiber communication, does not depend on any transmission medium, is implemented by means of free transmission of light in an open space environment, and can also implement a certain lighting function.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A light-propagation communication system for television media, comprising: the receiving terminal comprises a converter for converting a communication signal into a current pulse, a clock and data recovery circuit connected with the converter, and an LED array connected with the clock and data recovery circuit, wherein the LED array emits light according to the received current pulse, and the receiving terminal comprises: the device comprises a photodiode, a clock and data recovery circuit connected with the photodiode, and a decoder connected with the clock and data recovery circuit.
2. The light propagation communication system for television media of claim 1, wherein the receiving terminal further comprises a convex lens disposed in front of the photodiode.
3. The light propagation communication system for television media of claim 2, wherein the receiving terminal further comprises a preamplifier disposed between the photodiode and the clock and data recovery circuit.
4. The light propagation communication system for television media of any of claims 1 to 3, wherein the emitting end further comprises a convex lens disposed in front of the LED array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248570.7A CN111107329A (en) | 2018-10-25 | 2018-10-25 | Light propagation communication system for television media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248570.7A CN111107329A (en) | 2018-10-25 | 2018-10-25 | Light propagation communication system for television media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111107329A true CN111107329A (en) | 2020-05-05 |
Family
ID=70418692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811248570.7A Withdrawn CN111107329A (en) | 2018-10-25 | 2018-10-25 | Light propagation communication system for television media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111107329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024039682A1 (en) * | 2022-08-16 | 2024-02-22 | GenXComm, Inc. | Phase stable signal generator and signal distribution system |
-
2018
- 2018-10-25 CN CN201811248570.7A patent/CN111107329A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024039682A1 (en) * | 2022-08-16 | 2024-02-22 | GenXComm, Inc. | Phase stable signal generator and signal distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200505 |