CN2872748Y - Light terminal machine - Google Patents
Light terminal machine Download PDFInfo
- Publication number
- CN2872748Y CN2872748Y CNU2006200073893U CN200620007389U CN2872748Y CN 2872748 Y CN2872748 Y CN 2872748Y CN U2006200073893 U CNU2006200073893 U CN U2006200073893U CN 200620007389 U CN200620007389 U CN 200620007389U CN 2872748 Y CN2872748 Y CN 2872748Y
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- optical
- amplifier
- circuit
- digital signal
- video
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Abstract
The utility model discloses an optical transceiver, which comprises an optical transmitter and an optical receiver. The optical transmitter comprises a video signal transmitting channel composed of an amplifier, a power amplifier, and an optical transmitting unit; and digital signal receiving channel composed of an optical receiving unit, a preamplifier, a main amplifier, and an R5492 inverse transformation circuit. Video signal receiving channel comprises an optical receiving unit D1, a high-frequency amplifier, a feedback amplifier provided with a compensating network, a video amplifier, and a synchronous clamper circuit. The above circuit units are sequentially connected to constitute the optical transceiver. The inventive optical transceiver has compact structure, I/O ports connected through plug-in members, convenient usage and maintenance, low power consumption, small harmonic distortion, wide bandwidth, rapid data transmission speed, and good interference resistance. On-site application on optical fiber communication demonstrates that the optical transceiver operates steadily, can be easily and directly connected into existing video digital processing system, and has high performance/cost ratio.
Description
Technical field
The utility model relates to the optical transceiver that is used for technical grade special optic fibre communication network.
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.
The utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, is provided for the optical transceiver of technical grade special optic fibre communication network, i.e. optical sender and optical receiver are to satisfy the demand of broadband communication network.
The utility model optical transceiver comprises optical sender and optical receiver two parts, and optical sender, optical receiver are an independently modular construction, and both corresponding input/output terminals connect by a pair of optical fiber.
Optical sender comprises vision signal sendaisle and digital signal receive path, its vision signal transmission channel is made up of amplifier, power amplifier and optical transmitting set, optical transmitting set is connected to the power amplifier output loop, vision signal is amplified by described amplifier, is transformed into light signal by optical transmitting set and sends; Its digital signal receive path is made up of optical receiver, preposition amplification, main amplifier and inverse transform circuit, and optical receiver is connected to preposition amplification input circuit, and main amplifier output digital signal connects the inverse transform circuit input.Optical receiver comprises video reception passage and digital signal transmission channel, its video reception passage is made up of feedback amplifier, the video amplifier and the synchronous clamped circuit of optical receiver, high-frequency amplifier, compensatory network, described each circuit unit connects successively, and the synchronizing signal of synchronous clamped circuit output is returned another input of the video amplifier, and just synchronizing signal is clamped; Its digital signal transmission channel is by the RS422 converter; , power amplifier and form by the optical transmitting set that power amplifier drives.
The optical sender of the utility model optical transceiver, optical receiver are an independently modular construction, compact conformation, and input/output port connects by plug connector, use, easy to maintenance.It is low in energy consumption, and harmonic distortion is little, and bandwidth is wide, and data transmission bauds is fast, good in anti-interference performance.Optical transceiver is used for optical fiber communication, and it is stable through on-the-spot probationary certificate, installs and simply can directly insert existing digital video treatment system, product price ratio height.
Description of drawings
Fig. 1 is its schematic diagram;
Fig. 2 is the typical circuit figure of its optical sender;
Fig. 3 is the typical circuit figure of its optical receiver;
Embodiment
As shown in Figure 1, this optical transceiver comprises optical sender and optical receiver two parts, and optical sender and optical receiver are an independently modular construction, is respectively optical transmitter module and optical receiver module, input/output end port connects by plug connector, use, easy to maintenance.
The principle of its optical receiver and optical sender, enforcement circuit are referring to Fig. 2-3.Optical sender comprises vision signal sendaisle and digital signal receive path.Its vision signal transmission channel is made up of amplifier 1, power amplifier 2 and optical transmitting set D7 (LD), vision signal (VIDEOIN) is amplified by described amplifier 1,2, be transformed into light signal by optical transmitting set D7 and send out, by the video reception passage of Optical Fiber Transmission to optical receiver.Its digital signal receive path comprises that optical receiver D8 puts big by 3, main amplifier 4 and RS422 inverse transform circuit 6 in the past; Also can comprise recommending and amplify change-over circuit 7 or RS939 transducer 9, or recommend and amplify change-over circuit 7 and RS232 transducer 9.Optical receiver D8 is connected to preposition amplification 3 input circuits, and RS422 inverse transform circuit 6 inputs are received in main amplifier 4 outputs, recommend amplification change-over circuit 7 and RS232 transducer 9 inputs and are connected to RS422 inverse transform circuit 6 outputs.Main amplifier 4 output signals via R5422 inverse transform circuit 6 be transformed to the RS499 signal directly output carry out line traffic control, or the RS422 signal is transformed into the output of RSg.Rg signal through RS232 transducer 9 again and carries out line traffic control; Or the RS422 signal sends into to recommend again and amplifies change-over circuit 7 and be converted to coaxial signal, is output as the coaxial control of looking through coaxial line.With reference to figure 2, amplifier 1, power amplifier 2 are that triode Q1, Q2 and peripheral Resistor-Capacitor Unit thereof are formed the common emitter amplifying circuit, and 02 emitter-base bandgap grading access potentiometer CW and two resistance circuits can make things convenient for the adjusting of power.
Above-mentioned preposition amplification 5 is made up of triode 05-08 and corresponding Resistor-Capacitor Unit, and optical receiver D8 is connected between Q5 base stage and the emitter.Main amplifier 4 is formed feedback by Resistor-Capacitor Units such as Q9-Q11 and is amplified, and the Q11 output signal feeds back to the Q9 base stage through R25, and two amplifiers adopt capacitive coupling.Recommending amplification change-over circuit 7 mainly is made up of metal-oxide-semiconductor Q3, Q4.RS422 inverse transformation 6 can adopt circuit such as SN75179.RS932 transducer 9 can be selected HIN232 etc. for use.Optical receiver comprises video reception passage and digital signal transmission channel.Its video reception passage is made up of feedback amplifier 11, the video amplifier 14 and the synchronous clamped circuit 13 of optical receiver D1 (LD), high-frequency amplifier 10, compensatory network, described each circuit unit connects successively, and the synchronizing signal of synchronous clamped circuit 13 outputs is returned the video amplifier 14 another inputs makes synchronizing signal clamped.Its digital signal transmission channel is made up of RS422 converter 15, power amplifier 16 and the optical transmitting set Dg (LD) that driven by power amplifier.With reference to figure 3, Q1 ', Q3 ', amplify 11 Deng composition amplifier 10.Q3 ' composition feedback, Q3 ' emitter-base bandgap grading connects by T1, C2, R17 forms compensating network, vision signal after the compensation is exported one the tunnel and is input to dedicated video amplifier AD0849, AD0842 output also compares through the 3 pin input that C19 feeds back to TL082, output to 04 ' regulate, make synchronizing signal clamped.RS422 converter 15 adopts circuit such as TTC490CN8.Power amplifier 16 is by metal-oxide-semiconductor Q5 ', and the resistance R 37 of output loop and light-emitting tube D9 composition.
Its course of work is as follows:
In transmitter, the vision signal (VIDEOIN) of coming from the outside is input to amplifier Q1 base stage through J2, and after Q1, Q9 common emitter amplified, output signal was transformed into light signal to optical transmitting set D7 and sends.And the digital signal that optical receiver D8 receives (light signal becomes the signal of telecommunication) is through the preposition amplification of base stage input carrying out of Q5, and carry out AGC control with the base stage that the emitter feedback signal of Q7 is returned Q5, signal after the amplification amplifies through Q9, Q10, Q11 master behind the C18 differential again, Q11 output feeds back to the Q9 base stage through R25 and carries out AGC control, output signal to recommend and amplify change-over circuit Q3, Q4 and amplify conversion, export through coaxial line, or carry out the RS420 contravariant via SN75179 and change RS422 signal output into, or be transformed into RS232 output through HTN239.In receiver, optical receiver m1 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 the special-purpose chip ADO840 that amplifies carries out video amplification output, and output signal also compares through the 3 pin input that C19 feeds back to TL082, output to 04 ' regulate, make synchronizing signal clamped.Another road is carried out AGC control through TL082 by another comparison signal end input and through R30, R29 and return light receiver D1.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, when the technology contents that can utilize above-mentioned announcement is made a little change, in every case be not break away from technical solutions of the utility model, to any simple modification, equivalent variations and the modification that above embodiment did, all still belong in the scope of technical solutions of the utility model.
Claims (5)
1, a kind of optical transceiver, comprise optical sender and optical receiver two parts, it is characterized in that: optical sender comprises vision signal transmission channel and digital signal receive path, its vision signal transmission channel is made up of amplifier (1), power amplifier (2) and optical transmitting set D7, optical transmitting set D7 is connected to power amplifier (2) output loop, vision signal is amplified by described amplifier (1,2), is transformed into light signal by optical transmitting set D7 and sends; Its digital signal receive path is made up of optical receiver D8, preposition amplification (3), main amplifier (4) and R5492 inverse transform circuit (6), optical receiver D8 is connected to preposition amplification (3) input circuit, and main amplifier (4) output digital signal is received R5422 inverse transform circuit (6) input; Optical receiver comprises video reception passage and digital signal transmission channel, its video reception passage is made up of feedback amplifier (11), the video amplifier (14) and the synchronous clamped circuit (13) of optical receiver D1, high-frequency amplifier (10), compensatory network, described each circuit unit connects successively, the synchronizing signal of synchronous clamped circuit (13) output is returned the video amplifier (14), and another input makes synchronizing signal clamped; Its digital signal transmission channel is made up of R5429 converter (15), power amplifier (16) and the optical transmitting set ng that driven by power amplifier.
2, according to the described optical transceiver of claim 1, it is characterized in that: described optical sender, optical receiver are an independently modular construction, and both channel video signals are connected by a pair of optical cable with the digital signal passage.
3, according to the described optical transceiver of claim 1, it is characterized in that; The R5422 inverse transform circuit (6) of the digital signal receive path of described optical sender adopts the 5N75179 circuit.
4, according to the described optical transceiver of claim 1, it is characterized in that: the digital signal receive path of described optical sender also comprises recommends amplification change-over circuit (7), or R5232 transducer (9), or recommend and amplify change-over circuit (7) and R5232 transducer (9), recommend the output that amplification change-over circuit (7) and R5232 transducer (9) all are connected to R5422 inverse transform circuit (6).
5, according to the described optical transceiver of claim 4, it is characterized in that: the RS232 transducer (9) of the digital signal receive path of described optical sender adopts the HIN232 circuit, recommends amplification change-over circuit (7) and is made up of metal-oxide-semiconductor Q3, Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200073893U CN2872748Y (en) | 2006-03-08 | 2006-03-08 | Light terminal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200073893U CN2872748Y (en) | 2006-03-08 | 2006-03-08 | Light terminal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2872748Y true CN2872748Y (en) | 2007-02-21 |
Family
ID=37741088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200073893U Expired - Lifetime CN2872748Y (en) | 2006-03-08 | 2006-03-08 | Light terminal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2872748Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902621A (en) * | 2010-08-22 | 2010-12-01 | 武汉虹信通信技术有限责任公司 | Multi-channel video optical transceiver system capable of realizing video output switching without external matrix |
-
2006
- 2006-03-08 CN CNU2006200073893U patent/CN2872748Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902621A (en) * | 2010-08-22 | 2010-12-01 | 武汉虹信通信技术有限责任公司 | Multi-channel video optical transceiver system capable of realizing video output switching without external matrix |
| CN101902621B (en) * | 2010-08-22 | 2012-09-05 | 武汉烽火众智数字技术有限责任公司 | Multi-channel video optical transceiver system capable of realizing video output switching without external matrix |
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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: BEIJING QIANXI HENGYE TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: BEIJING SHULONG TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100083 Beijing city Haidian District Yihai Qinghua East Road No. 16 building room 1605 Patentee after: Beijing Qianxi Hengye Science and Technology Development Co., Ltd., Beijing Address before: 100101 No. 8 South Beach, Beijing, Chaoyang District Patentee before: Shulong Science and Technology Development Co., Ltd., Beijing |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090109 Address after: Beijing City, Haidian District Yihai Qinghua East Road No. 16 building room 1606, zip code: 100083 Patentee after: Beijing Lanshan Industrial Technology Co., Ltd. Address before: Beijing City, Haidian District Yihai Qinghua East Road No. 16 building room 1605, zip code: 100083 Patentee before: Beijing Qianxi Hengye Science and Technology Development Co., Ltd., Beijing |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING LANSHAN JIYE SCIENCE CO., LTD. Free format text: FORMER OWNER: BEIJING QIANXI HENGYE TECHNOLOGY CO., LTD. Effective date: 20090109 |
|
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING BLUE MOUNTAINS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING BLUE MOUNTAIN FOUNDATION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100083 Beijing city Haidian District Yihai Qinghua East Road No. 16 building room 1606 Patentee after: BEIJING BLUE MOUNTAINS TECHNOLOGY CO., LTD. Address before: 100083 Beijing city Haidian District Yihai Qinghua East Road No. 16 building room 1606 Patentee before: Beijing Lanshan Industrial Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070221 |
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| EXPY | Termination of patent right or utility model |