CN2612158Y - Video and two-way data optical terminal device - Google Patents
Video and two-way data optical terminal device Download PDFInfo
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- CN2612158Y CN2612158Y CNU032238932U CN03223893U CN2612158Y CN 2612158 Y CN2612158 Y CN 2612158Y CN U032238932 U CNU032238932 U CN U032238932U CN 03223893 U CN03223893 U CN 03223893U CN 2612158 Y CN2612158 Y CN 2612158Y
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- amplifier
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- video
- division multiplexing
- wavelength division
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Abstract
The utility model relates to a video and bidirectional data optical terminal, which comprises an optical transmitter and an optical receiver, wherein the optical transmitter comprises a data receiving-transmitting path and a video transmitting path which comprises a two-stage amplifier, a mixed amplifier and a wavelength-division multiplex optical device connected to the output circuit of the mixed amplifier. The optical receiver comprises a data receiving-transmitting path and a video receiving path which comprises a high-frequency amplifier, a demodulating feedback amplifier and a video amplifier successively connected, and a wavelength-division multiplex optical device connected to the input circuit of the high-frequency amplifier. The utility model is split into two separate modular structures convenient for usage and maintenance, and can be directly accessed into the existing video digital system, with the advantages of low power consumption, small harmonic distortion, large band width, 60 db of signal to noise ratio and good anti-interference ability. The probation on site proves that the utility model has stable running, 10 to 6 bit error rate and transmission range of over 50 km.
Description
Technical field
The utility model relates to the optical transceiver that is used for technical grade special optic fibre communication network, the optical transceiver of particularly a kind of transmission of video and bi-directional data.
Background technology
In the general industry transmission system, 4km uses coaxial cable, twisted-pair feeder etc. with interior transmission means more at present, uses coaxial cable, the decay of twisted-pair feeder transmission signals greatly, and transmission range is short, poor anti jamming capability.Existing optical transceiver product can not transmitting control data in images in Networks of Fiber Communications, maybe can not transmit two-way control data.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, is provided for the energy transmission of video of Networks of Fiber Communications and the optical transceiver of bi-directional data, to satisfy the demand of broadband communication network.
The utility model is to realize like this, it comprises optical sender and optical receiver two parts, optical sender comprises that video transmission passage and bi-directional data receive, transmission channel, described video transmission passage contains amplifier (1), the power amplifier (2) that connects successively and mixes and amplify (3), and is connected to the wavelength division multiplexing optical device (4) that mixes amplification (3) output loop.Described data transmission passage contains RS422 converter (5), the power amplification (6) that connects successively and mixes and amplify (3), and wavelength division multiplexing optical device (4).Described Data Receiving passage contains wavelength division multiplexing optical device (4), and the preposition amplification (7), main amplifier (9) and the RS422 inverse transformer (10) that connect successively, connect feedback circuit (8) between main amplifier (9) and preposition amplification (7) input, preamplifier (7) is connected to the output of wavelength division multiplexing optical device (4).
Optical receiver comprises video reception passage and data transmission, receive path, described video reception passage contains high-frequency amplifier (13), demodulation feedback amplifier (15) and the video amplifier (16) that connects successively, and the wavelength division multiplexing optical device (12) that is connected to high-frequency amplifier (13) input circuit, connect feedback circuit (14) between demodulation feedback amplifier (15) and the high-frequency amplifier (13).The data transmission passage contains RS422 converter (22), power amplifier (23) and wavelength division multiplexing optical device (12), and power amplifier (23) connects the input of wavelength division multiplexing optical device (12).The Data Receiving passage contains described wavelength division multiplexing optical device (12), high frequency amplifies (13) and demodulation feedback amplifier, and the preamplifier (17), main amplifier (19) and the RS422 inverse transformer (20) that connect successively, preamplifier (17) connects the data output end of demodulation feedback amplifier, connects feedback circuit (18) between main amplifier (19) and the preamplifier (17).
The optical sender of the utility model optical transceiver, optical receiver are an independently modular construction, optical sender comprises vision signal transmission channel and data-signal sending and receiving passage, optical receiver comprises that video reception passage and digital signal are launched, receive path, compact conformation, input/output end port connects by plug connector, use, easy to maintenance.It is low in energy consumption, harmonic distortion is little, bandwidth (5HZ-10MHZ), DG＜5%, DP＜5%, signal to noise ratio are 60db, number compatible RS232, RS422, RS485, TTL transformer (NRZ1, Manchester, two-phase), data transmission bauds is: DC-100 baud (NRZ), it is good to do jamming performance, has realized the transmitted in both directions of data-signal.
It is stable through the on-the-spot probationary certificate of optical fiber telecommunications system for optical transceiver, and the error rate is 10-6, and transmission maximum distance 60km installs and simply can directly insert existing digital video treatment system, product price ratio height.It utilizes wavelength-division multiplex technique to send video and bi-directional data, power output-6dB receiving sensitivity-31dB on one standard 9/125 single module optical cable.
Description of drawings
Fig. 1 a, b are structural representations of the present utility model;
Fig. 2 is its theory diagram;
Fig. 3 a, b are the embodiment circuit diagrams of its optical sender;
Fig. 4 a, b are the embodiment circuit diagrams of its optical receiver;
Fig. 5 is that it uses schematic diagram.
Embodiment
Below in conjunction with the embodiment accompanying drawing the utility model is further specified.
Shown in Figure 1 as structure, this optical transceiver comprises optical sender and optical receiver two parts, optical sender and optical receiver are an independently modular construction, Fig. 1 a, Fig. 1 b are respectively optical transmitter module GF12S5T and optical receiver module GF12S5R, the wavelength division multiplexing optical device D4 (4) of optical sender and the wavelength division multiplexing optical device D of optical receiver
1(12) connect by an optical cable between, input/output end port adopts plug connector to connect, use, easy to maintenance.
Its optical receiver and optical sender theory diagram, embodiment circuit are shown in Fig. 2-4.
Optical sender comprises vision signal transmission channel and data transmission, receive path.The video transmission passage is by amplifier (1), power amplifier (2), mixed amplifier (3) and wavelength division multiplexing optical device D
4(4) form, amplifier (1), power amplifier (2) and mixing are amplified (3) and are connected wavelength division multiplexing optical device D successively
4(4) be connected to mixed amplifier (3) output loop.
The data transmission passage contains RS422 converter (5), power amplification (6), mixes and amplify (3) and wavelength division multiplexing optical device D
4(4).After vision signal (VIDEO IN) is amplified by described amplifier (1,2), again by mixer amplifier (3) with carry out mixing through the data-signal after RS422 conversion (5), the power amplification (6) and superpose after, by wavelength division multiplexing optical device D
4(4) be transformed into the light signal emission.
The Data Receiving passage contains light receiving element D4 (4), the preposition amplification (7) of Lian Jieing successively, main amplifier (9) and RS422 inverse transformer (10), connect feedback circuit (8) between main amplifier (9) and preposition amplification (7) input, preamplifier (7) is connected to the output of wavelength division multiplexing optical device (4), main amplifier (9) output also can connect RS232 transducer (11), main amplifier (9) output signal via RS422 inverse transformer (10) be transformed to the RS422 signal directly output carry out line traffic control, or be transformed into the output of RS232 signal through RS232 transducer (11) and carry out line traffic control.
With reference to Fig. 3 a, b, above-mentioned amplifier (1) can adopt operational amplifier U5 (LT1223) and peripheral Resistor-Capacitor Unit thereof to form, power amplifier (2) adopts operational amplifier U3 (TL082), triode Q4, and peripheral Resistor-Capacitor Unit composition common emitter amplifying circuit, operational amplifier input access potentiometer R2 and resistance circuit can make things convenient for the adjusting of power.Mixing amplification (3) is made up of integrated circuit MC1658P and peripheral circuit thereof.
Above-mentioned preposition amplification (7) is made up of U1 LM6361 operational amplifier, and wavelength division multiplexing optical device D4 (4) is connected to the Q6 emitter.Main amplifier (9) is formed feedback by amplifier TL084 and is amplified.RS422 inverse transformation (10) can adopt circuit such as LTC490.RS232 transducer (11) can be selected MAX232 etc. for use.
Optical receiver comprises video reception passage and data transmission, receive path.The video reception passage contains high-frequency amplifier (13), demodulation feedback amplifier (15) and the video amplifier (16) that connects successively, and the wavelength division multiplexing optical device D1 (12) that is connected to high-frequency amplifier (13) input circuit, connect feedback circuit (14) between demodulation feedback amplifier (15) and the high-frequency amplifier (13).The light signal of input demodulates video and data two paths of signals by demodulation feedback amplifier (15) after the optical-electrical converter conversion of optical device D1 and high-frequency amplifier (13) composition, wherein vision signal output after the video amplifier (16) amplifies.
The data transmission passage contains RS422 converter (22), power amplifier (23) and wavelength division multiplexing optical device (12), and power amplifier (23) connects the input of wavelength division multiplexing optical device (12).
The Data Receiving passage contains described wavelength division multiplexing optical device D1 (12), high frequency amplifies (13) and demodulation feedback amplifier (15), and the preamplifier (17), main amplifier (19) and the RS422 inverse transformer (20) that connect successively, main amplifier (19) output is changed and can be connect RS232 inverse transformer (21).The light signal of input is after the optical-electrical converter conversion of optical device D1 and high-frequency amplifier (13) composition, demodulate video and data two paths of signals by demodulation feedback amplifier (15), wherein data-signal is after preamplifier (17) and main amplifier (19) amplification, by RS422 inverse transformer (20) output RS422 data-signal, RS232 inverse transformer (21) output RS232 data-signal.
With reference to Fig. 4, Q1 forms high-frequency amplifier (13,) Q2 composition feedback amplification (14), the Q3 emitter-base bandgap grading connects by integrated circuit CA3127 and peripheral circuit thereof forms demodulation feedback amplifier (15), the vision signal that demodulation feedback amplifier (15) demodulates is exported one the tunnel and is input to video amplifier TL081, incoming video signal compares through the 3 pin input of TL082, and output is regulated Q7, makes synchronizing signal clamped.RS422 converter (22) adopts circuit such as LTC490CN8.Power amplifier (23) is made up of integrated operational amplifier U1 LM393.
With reference to Fig. 3,4 embodiment circuit its course of work is summarized as follows:
In transmitter, the vision signal (VIDEO IN) of coming from the outside is input to operational amplifier LT1223 input through J2, after the T1223 one-level is amplified, output signal is behind the regulating circuit that TL082 forms, after carrying out the mixing stack via the data of mixer amplifier (3) and data transmission passage, deliver to wavelength division multiplexing optical device D4 (4) and be transformed into light signal and launch.
In transmitter, from the data-signal (RS232, RS485, RS422) of database J5 input respectively after U2 MAX232, U9 LTC485 are converted to Transistor-Transistor Logic level, after U5 MC1374 frequency modulation, U11 AM286 amplification, send into video board, after process U4 MC1658P and above-mentioned video transmission passage vision signal are carried out the mixing stack, deliver to WDM optical device D4 emission.
Data-signal from the receiving terminal input of the WDM optical device of video transmission plate, after the amplification of LM6361 one-level, send into the J2 input of database, after amplifying via U8 LM6361 secondary again, after the LTC490 difference is amplified, behind MAX485, MAX232, export the data-signal of RS485 and RS232 respectively.
And the digital signal (light signal becomes the signal of telecommunication) that WDM optical device D1 receives is carried out preposition amplification through the input of Q1, and carry out AGC control with the base stage that the emitter feedback signal of Q2 is returned Q3, signal is after the C1 coupling, send into demodulation feedback amplifier (15) and demodulate video and data two paths of signals, wherein data-signal is sent into database LTC490 and is carried out the RS422 contravariant and change RS422 signal output into, or is transformed into RS232 output through HIN232.
In receiver, WDM optical device D1 receiver, video is after height is put the pipe amplification, form by Q2, Q3 again and amplify feedback loop, vision signal output after the compensation divides two-way, one the tunnel is input to amplification chip TL082 carries out video amplification output, and output signal also compares through the 3 pin input that C9 feeds back to TL082, and output is regulated Q47, makes synchronizing signal clamped.Another road is carried out AGC control through TL081 by another comparison signal end input and through R30 back light receiver D1.
In receiver, digital signal is transformed into the RS422 signal by LTC490CN8, is launched by optical transmitting set D1 behind the power amplifier.
Fig. 5 is that it uses schematic diagram.Optical sender (GF12S5T) and optical receiver (GF12S5R) can directly insert in the existing CCTV system, the output of optical sender is connected by a core monomode fiber with the input of optical receiver, energy is transmission of video and reception bi-directional data signal simultaneously, the vision signal that transmits from Video source can pass to receiver by optical fiber through transmitter, and outputs to the Monitor demonstration by VIDEO OUT.
Digital controlled signal is then handled by receiver input, and is sent to the input of transmitter through optical fiber, through amplifying, outputing to front end after the conversion.
This product proves that through on-the-spot use of optical fiber telecommunications system it is stable, and the error rate is 10-6, and transmission range can reach 50km, and easy to use, installs and simply can directly insert existing digital video treatment system, product price ratio height.This product utilization wavelength-division multiplex technique sends video and receives data, power output-6db receiving sensitivity-31db on one standard 9/125 single mode fiber cable.
Claims (8)
1, a kind of video and bi-directional data optical transceiver, comprise optical sender and optical receiver two parts, it is characterized in that: optical sender comprises that video transmission passage and bi-directional data receive, transmission channel, described video transmission passage contains amplifier (1), the power amplifier (2) that connects successively and mixes and amplify (3), and is connected to the wavelength division multiplexing optical device (4) that mixes amplification (3) output loop; Described data transmission passage contains RS422 converter (5), the power amplification (6) that connects successively and mixes and amplify (3), and wavelength division multiplexing optical device (4); Described Data Receiving passage contains wavelength division multiplexing optical device (4), and the preposition amplification (7), main amplifier (9) and the RS422 inverse transformer (10) that connect successively, and preamplifier (7) is connected to the output of wavelength division multiplexing optical device (4);
Optical receiver comprises video reception passage and data transmission, receive path, described video reception passage contains high-frequency amplifier (13), demodulation feedback amplifier (15) and the video amplifier (16) that connects successively, and the wavelength division multiplexing optical device (12) that is connected to high-frequency amplifier (13) input circuit; The data sendaisle contains RS422 converter (22), power amplifier (23) and wavelength division multiplexing optical device (12), and power amplifier (23) connects the input of wavelength division multiplexing optical device (12); The Data Receiving passage contains described wavelength division multiplexing optical device (12), high frequency amplifies (13) and demodulation feedback amplifier, and the preamplifier (17), main amplifier (19) and the RS422 inverse transformer (20) that connect successively, preamplifier (17) connects the data output end of demodulation feedback amplifier.
2, optical transceiver according to claim 1, it is characterized in that: described optical sender, optical receiver are an independently modular construction, adopt an optical cable to be connected between the former wavelength division multiplexing optical device (4) and the latter's wavelength division multiplexing optical device (12).
3, optical transceiver according to claim 1 is characterized in that: the RS422 inverse transformer (20) of the RS422 inverse transformer (10) of the Data Receiving passage of described optical sender and the Data Receiving passage of optical receiver adopts the LTC490 circuit.
4, optical transceiver according to claim 1 is characterized in that: in optical receiver, Data Receiving passage main amplifier (19) output is connected to RS232 transducer (21).
5, optical transceiver according to claim 1 is characterized in that: in the described optical sender, the Data Receiving passage also comprises RS232 transducer (11), and RS232 transducer (11) is connected to main amplifier (9) output.
6, according to claim 4 or 5 described optical transceivers, it is characterized in that: the MAX232 circuit is adopted in described RS232 transducer (21), (11).
7, according to the described optical transceiver of claim 1, it is characterized in that: the mixing of described optical sender is amplified (3) and is adopted integrated circuit MC1658P.
8, according to the described optical transceiver of claim 1, it is characterized in that: the demodulation feedback amplifier (15) of described optical receiver adopts integrated circuit CA3127.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032238932U CN2612158Y (en) | 2003-02-25 | 2003-02-25 | Video and two-way data optical terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032238932U CN2612158Y (en) | 2003-02-25 | 2003-02-25 | Video and two-way data optical terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612158Y true CN2612158Y (en) | 2004-04-14 |
Family
ID=34163064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032238932U Expired - Fee Related CN2612158Y (en) | 2003-02-25 | 2003-02-25 | Video and two-way data optical terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2612158Y (en) |
-
2003
- 2003-02-25 CN CNU032238932U patent/CN2612158Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN HONGDI INDUSTRIAL CO., LTD. Free format text: FORMER NAME: HONGDI INDUSTRY CO. LTD., SHENZHEN CITY |
|
| CP03 | Change of name, title or address |
Address after: 518000 A, Fu Qiao building, 10B, Guangdong, Shenzhen, Futian District Patentee after: Shenzhen Hongdi Industrial Co., Ltd. Address before: 518033 Guangdong province Shenzhen Fuhua Road, Fuqiao building A-10B Patentee before: Hongdi Industry Co. Ltd., Shenzhen City |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN JIFU COMMUNICATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN HONGDI INDUSTRIAL CO., LTD. Effective date: 20120416 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 518057 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120416 Address after: 518057, West Wing 8, building 4, sparrow Ridge Industrial Zone, Shenzhen, Guangdong, Nanshan District Patentee after: Shenzhen Jifu Communication Technology Co., Ltd. Address before: 518000 A, Fu Qiao building, 10B, Guangdong, Shenzhen, Futian District Patentee before: Shenzhen Hongdi Industrial Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040414 Termination date: 20120225 |