CN202524512U - Eight-path pure-video digital video optical transceiver - Google Patents
Eight-path pure-video digital video optical transceiver Download PDFInfo
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- CN202524512U CN202524512U CN2012202351189U CN201220235118U CN202524512U CN 202524512 U CN202524512 U CN 202524512U CN 2012202351189 U CN2012202351189 U CN 2012202351189U CN 201220235118 U CN201220235118 U CN 201220235118U CN 202524512 U CN202524512 U CN 202524512U
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Abstract
The utility model provides an eight-path pure-video digital video optical transceiver. The eight-path pure-video digital video optical transceiver comprises an optical transceiver receiver and an optical transceiver transmitter, wherein the optical transceiver transmitter is connected with the optical transceiver receiver through a transmission optical fiber; the optical transceiver transmitter comprises a video input circuit, a preposed filter amplifier, an A/D (Analog/Digital) converter, a time division multiplexing circuit, an Ethernet encoding/decoding module and an optical fiber transceiver circuit which are sequentially connected; the time division multiplexing circuit is connected with a switch signal input/output module; the video input circuit is provided with eight input paths; the optical transceiver receiver comprises an optical fiber transceiver circuit, an Ethernet decoding/encoding module, a time division multiplexing circuit, an D/A (Digital/Analog) converter, a postposed filter amplifier and a video output circuit which are sequentially connected; the time division multiplexing circuit is connected with the switch signal input/output module; and the video output circuit is provided with eight output paths. By adopting a pure-video digital video transmission way, the eight-path pure-video digital video optical transceiver is stable and reliable in data transmission, high in signal quality, strong in anti-interference ability, free of environmental influence on optical fiber transmission and high in long-term working stability.
Description
Technical field
The utility model relates to a kind of digital video transmission equipment, specifically, relates to the pure digital video video optical multiplexer of a kind of octuple.
Background technology
Optical transceiver is a kind of transmission equipment that carries out opto-electronic conversion and transmission, is widely used in telecommunications, electric power, monitoring, Industry Control, video transmission etc., has a wide range of applications at industry-by-industry.Usually the optical transceiver of saying is used in the supervisory control system more, is that supervisory control system is used for the equipment of integrated informations such as transmission of video, data, Ethernet, audio frequency, and the signal that especially is suitable for long distance transmits.Though, also have shortcomings such as transmission range weak point, poor anti jamming capability, transmission data volume be less simultaneously because have cheap advantage through the coaxial cable transmission signals; And optical fiber communication has advantages such as transmission range is long, signal attenuation is few, antijamming capability is strong, volume of transmitted data is big, so in industry-by-industry, obtained to use widely.
Optical transceiver can be divided into two kinds of simulated light terminal and Digital Optical Terminal.The simulated light terminal is exactly to carry out amplitude or frequency modulation(FM) at the signal that transmitting terminal will transmit, and then the signal of telecommunication that modulates is changed into light signal; At receiving terminal light signal is reduced into the signal of telecommunication, carries out demodulation to signal again, restore image, voice or data-signal.Digital Optical Terminal is at transmitting terminal want image transmitted, voice and data-signal to be carried out digitized processing; Again these digital signals are carried out multiplexing process; Make the digital signal of multi-path low speed convert one road high speed signal to, and this conversion of signals is become light signal; At receiving terminal light signal is reduced into the signal of telecommunication, the high speed signal of reduction decomposites original multi-path low speed signal, again these data-signals is reduced into image, voice and data-signal at last.
The simulated light terminal needs analog fm, phase modulation, amplitude modulation, when simulated light terminal multiple signals with when transmission intermodulation distortion seriously, easily affected by environment, transmission quality is inferior, long-term working stability is poor; Though and common Digital Optical Terminal transmission signals quality is high, the transmission means of ordinary numbers optical transceiver adopts and the string conversion regime, and the light signal of numeral is transmitted in optical fiber with common serial transmission mode.Though the noiseproof feature of optical transmission mode is good, but still there is the possibility of error code.And the serial transmission vision signal of general optical transceiver, audio signal be separately transmission generally, and without the packing transmission, does not more comprise digital control command signal.
The utility model content
The purpose of the utility model is to overcome the weak point of above-mentioned conventional art, provide that a kind of transmission signals quality is high, antijamming capability by force, not affected by environment, long-term working stability good, can be through the pure digital video video optical multiplexer of octuple of Ethernet transmission of digital control command signal.
The purpose of the utility model reaches through following technical measures:
The pure digital video video optical multiplexer of octuple comprises optical transceiver receiver and optical transceiver transmitter, and the optical transceiver transmitter is connected through Transmission Fibers with the optical transceiver receiver, it is characterized in that:
The optical transceiver transmitter comprises video input circuit, pre-filtering amplifier, A/D converter, time multiplexing circuit, switching signal input/output module, Ethernet coding/decoding module and optical fiber transmission circuit; Said video input circuit, pre-filtering amplifier, A/D converter, time multiplexing circuit, Ethernet coding/decoding module and optical fiber transmission circuit are linked in sequence; Said time multiplexing circuit is connected with the switching signal input/output module, and said video input circuit is provided with the octuple input;
The optical transceiver receiver comprises video output circuit, post-filtering amplifier, D/A converter, time multiplexing circuit, switching signal input/output module, Ethernet decoding/encoding module and optical fiber transmission circuit; Said optical fiber transmission circuit, Ethernet decoding/encoding module, time multiplexing circuit, D/A converter, post-filtering amplifier and video output circuit are linked in sequence; Said time multiplexing circuit is connected with the switching signal input/output module, and said video output circuit is provided with octuple output.
As a kind of preferred version, said Ethernet coding/decoding module and Ethernet decoding/encoding module are provided with the RJ45 interface, and each paths of said RJ45 interface is equipped with electrical surge and absorbs device.
The utility model adopts the transmission means of Ethernet, can be to data packing transmission, therefore not only cost is lower, and the error rate and error correcting capability improve greatly, and with the Ethernet card interface compatibility of PC, make communication more convenient.
Owing to adopted technique scheme, compared with prior art, the utility model has the advantages that:
(1) pure digital video video transmission mode, transfer of data is stable, reliable, and signal quality is high, antijamming capability is strong.
(2) Optical Fiber Transmission is not affected by environment, long-term working stability is good.
(3) can adopt Ethernet packing transmission data, cost is lower, and the error rate and error correcting capability improve greatly, and with the Ethernet card interface compatibility of PC, make communication more convenient.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Accompanying drawing 1 is the structural representation of the pure digital video video optical multiplexer of the utility model octuple embodiment;
Accompanying drawing 2 is structural representations of optical transceiver transmitter among the pure digital video video optical multiplexer of the utility model octuple embodiment;
Accompanying drawing 3 is structural representations of optical transceiver receiver among the pure digital video video optical multiplexer of the utility model octuple embodiment.
Embodiment
Embodiment: shown in accompanying drawing 1; The pure digital video video optical multiplexer of octuple; Comprise optical transceiver receiver 3 and optical transceiver transmitter 2, optical transceiver transmitter 2 and optical transceiver receiver 3 are connected through Transmission Fibers, and also being provided with the optical transceiver power supply is that optical transceiver transmitter 2 and optical transceiver receiver 3 are supplied power;
Shown in accompanying drawing 2; Optical transceiver transmitter 2 comprises video input circuit 21, pre-filtering amplifier 22, A/D converter 23, time multiplexing circuit 24, switching signal input/output module 27, Ethernet coding/decoding module 25 and optical fiber transmission circuit 26; Said video input circuit 21, pre-filtering amplifier 22, A/D converter 23, time multiplexing circuit 24, Ethernet coding/decoding module 25 and optical fiber transmission circuit 26 are linked in sequence; Said time multiplexing circuit 24 is connected 27 with the switching signal input/output module, and said video input circuit is provided with octuple input 1; The input of every road all can connect a camera 5.
Shown in accompanying drawing 3; Optical transceiver receiver 3 comprises video output circuit 36, post-filtering amplifier 35, D/A converter 34, time multiplexing circuit 33, switching signal input/output module 37, Ethernet decoding/encoding module 32 and optical fiber transmission circuit 31; Said optical fiber transmission circuit 31, Ethernet decoding/encoding module 32, time multiplexing circuit 33, D/A converter 34, post-filtering amplifier 35 and video output circuit 36 are linked in sequence; Said time multiplexing circuit 33 is connected with switching signal input/output module 37, and said video output circuit 36 is provided with octuple output 4; The output of every road all can connect a monitor 6.
In the present embodiment, said Ethernet coding/decoding module 25 is provided with the RJ45 interface with Ethernet decoding/encoding module 32, and each paths of said RJ45 interface is equipped with electrical surge and absorbs device.The RJ45 interface is not shown.
The utility model can adopt Optical Fiber Transmission or Ethernet transmission means; Can be to data packing transmission; Therefore not only cost is lower; And the error rate and error correcting capability improve greatly, and the utility model has adopted the RJ45 interface with the Ethernet card interface compatibility of PC, makes the storage of information and transmission more convenient.
Claims (2)
1. the pure digital video video optical multiplexer of octuple comprises optical transceiver receiver (3) and optical transceiver transmitter (2), and optical transceiver transmitter (2) is connected through Transmission Fibers with optical transceiver receiver (3), it is characterized in that:
Optical transceiver transmitter (2) comprises video input circuit (21), pre-filtering amplifier (22), A/D converter (23), time multiplexing circuit (24), switching signal input/output module (27), Ethernet coding/decoding module (25) and optical fiber transmission circuit (26); Said video input circuit (21), pre-filtering amplifier (22), A/D converter (23), time multiplexing circuit (24), Ethernet coding/decoding module (25) and optical fiber transmission circuit (26) are linked in sequence; Said time multiplexing circuit (24) is connected with switching signal input/output module (27), and said video input circuit (21) is provided with octuple input (1);
Optical transceiver receiver (3) comprises video output circuit (36), post-filtering amplifier (35), D/A converter (34), time multiplexing circuit (33), switching signal input/output module (37), Ethernet decoding/encoding module (32) and optical fiber transmission circuit (31); Said optical fiber transmission circuit (31), Ethernet decoding/encoding module (32), time multiplexing circuit (33), D/A converter (34), post-filtering amplifier (35) and video output circuit (36) are linked in sequence; Said time multiplexing circuit is connected with switching signal input/output module (37), and said video output circuit (36) is provided with octuple output (4).
2. the pure digital video video optical multiplexer of octuple according to claim 1; It is characterized in that: said Ethernet coding/decoding module (25) and Ethernet decoding/encoding module (32) are provided with the RJ45 interface, and each paths of said RJ45 interface is equipped with electrical surge and absorbs device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202351189U CN202524512U (en) | 2012-05-11 | 2012-05-11 | Eight-path pure-video digital video optical transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202351189U CN202524512U (en) | 2012-05-11 | 2012-05-11 | Eight-path pure-video digital video optical transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524512U true CN202524512U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202351189U Expired - Fee Related CN202524512U (en) | 2012-05-11 | 2012-05-11 | Eight-path pure-video digital video optical transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202524512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347183A (en) * | 2013-06-28 | 2013-10-09 | 成都思迈科技发展有限责任公司 | Digital video optical transmitter |
| CN103945172A (en) * | 2013-01-18 | 2014-07-23 | 上海共联通信信息发展有限公司 | Audio-video monitor system based on optical fiber transmission |
-
2012
- 2012-05-11 CN CN2012202351189U patent/CN202524512U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945172A (en) * | 2013-01-18 | 2014-07-23 | 上海共联通信信息发展有限公司 | Audio-video monitor system based on optical fiber transmission |
| CN103347183A (en) * | 2013-06-28 | 2013-10-09 | 成都思迈科技发展有限责任公司 | Digital video optical transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |