CN206042241U - Embedded video signal photoelectric conversion module - Google Patents
Embedded video signal photoelectric conversion module Download PDFInfo
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- CN206042241U CN206042241U CN201621001141.6U CN201621001141U CN206042241U CN 206042241 U CN206042241 U CN 206042241U CN 201621001141 U CN201621001141 U CN 201621001141U CN 206042241 U CN206042241 U CN 206042241U
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- video signal
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Abstract
The utility model provides an embedded video signal photoelectric conversion module, it includes two mated modules, the branch maybe turn into video signal electricity / light conversion module group of light signal and organize light signal conversion for light / electric conversion module of video signal, and two modules need use in pairs, and electricity / light conversion module group transfers video signal to smooth signal transmission, and light / electric conversion module group turns into video signal with the light signal of receiving. Wherein the video signal interface of electricity / light conversion module group, light / electric conversion module group is row's battle array of 2pin, crosses the jogged joint with original BNC on the PCB board, and the optical interface utilizes original BNC interface position, and the volume is similar with original BNC. The utility model discloses a structure has significantly reduced the equipment that originally had the BNC video interface and has upgraded to the technical difficulty of optical interface, saves equipment communication module's development time, has improved stability and uniformity simultaneously.
Description
Technical field
This utility model belongs to optical communication technology field, it is especially a kind of can be with the optical interface mould of substitution video bnc interface
Group, is exactly specifically directly to replace with the same optical interface of overall dimensions in the original video bnc interface position of equipment, while
The original outward appearance interface size of equipment need not be changed.
Background technology
Video signal is a kind of analogue signal, is made up of video simulation data and audio video synchronization data, proper for receiving
True ground display image.Color television mainly has three kinds of standards, i.e. NTSC, PAL and SECAM-system formula, NTSC in the world at present（It is beautiful
State's national television standards committee, National Television Standards Committee）、PAL（Line-by-line inversion,
Phase Alternate Line）And SECAM（Sequentially transfer and storage color television system）, three kinds of standards there is no method at present
It is unified.China uses PAL-D standards.
The bandwidth of video baseband signal is 0-6MHZ, and in general, signal frequency is higher, decays bigger, is typically designed
When need to only consider to ensure that the amplitude of high-frequency signal can just meet the requirement of system, video signal is as follows in the decay of 5.8MHZ：
SYV75-3 GBs vision cable decay 30dB/1000 rice, SYV75-5 GBs vision cable decay 19dB/1000 rice,
SYV75-7 GBs vision cable decay 13dB/1000 rice；So in general, 75-3 cables can transmit 150 meters,
75-5 can transmit 300 meters, 75-7 can transmit 500 meters.
Coaxial cable is a kind of shielded cable, has the advantages that transmitting range length, signal stabilization.Bnc interface namely what is often called is same
Shaft cable interface.Bnc interface can completely cut off video input signals, make to interfere with each other reduction between signal, and resistance to corrosion is stronger, fit
Use all kinds of supervision control engineerings.
At present, it is when in video signal long range propagation, or transmission way, electromagnetic interference is especially big, general to be passed using optical fiber
It is defeated.The method for generally adopting now is a video optical multiplexer transmitter external in source device, transmits again, arrive after being converted to optical fiber
Up to after destination, recycle a video optical multiplexer receiver to switch to video signal, be connected to purpose equipment.External mode is in peace
Have the shortcomings that to take installing space during dress, affect the outward appearance of system, be easily subject to electromagnetic interference.Present many CCTV cameras
Manufacturer wishes the direct optical fiber output of video camera, can both avoid shortcoming, it is also possible to improve the class of video camera.But general takes the photograph
Camera manufacturer is bad at fiber-optic transfer design, while also needing to redesign the internal circuit design of video camera, increased cost.
For such case, we design a kind of embedded video signal photoelectricity modulus of conversion group, as long as client is by this module
The position that original BNC connects stitch is directly installed on, can just allow output light between equipment to be believed using original bnc interface position
Number, original BNC video interfaces are directly replaced with into optical fiber interface directly so, when greatling save the design of video optical port
Between and cost, also improve product reliability.
Utility model content
The purpose of this utility model is, for the problems referred to above, to propose a kind of embedded video signal photoelectricity modulus of conversion group.This
Utility model directly replaces with the same optical interface of overall dimensions in the original bnc interface position of equipment, without the need for change
Original video bnc interface directly can be converted to FC/ST optical fiber interfaces, be greatly reduced by the original outward appearance interface size of equipment
Technical difficulty of original device upgrade with bnc interface for optical interface.
The technical solution of the utility model is：
A kind of embedded video signal photoelectricity modulus of conversion group, it includes two paired modules, is by video signal respectively
The electrical/optical conversion module for being converted into optical signal and the optical electrical conversion module for converting optical signals to video signal；Wherein, electrical/optical
Conversion module include video signal input needle stand, video signal driving chip one, video signal modulus conversion chip, driver,
Electrical/optical crossover connection and optical interface one；Described video signal input needle stand is used for connecting outer video signal, internal connection video
Signal driving chip one, the signal output part of video signal driving chip one connect the input of video signal modulus conversion chip
End, the serial signal outfan of video signal modulus conversion chip connect the input of driver, the outfan connection of driver
The electric signal input end of electrical/optical crossover connection, the light signal output end of electrical/optical crossover connection are connected to optical fiber by optical interface one；Light/
Electricity conversion module includes that optical interface two, optical electrical crossover connection, post amplifier, video signal analog-digital chip, video signal drive
Dynamic chip two and video signal output needle stand；One end connection optical fiber of described optical interface two, other end connection optical electrical crossover connection
Signal input part, the serial digital signal outfan connection post amplifier of optical electrical crossover connection, the signal of post amplifier is defeated
Go out the input of end connection video signal analog-digital chip, the VT connection of video signal analog-digital chip
The signal input part of video signal driving chip two, the outfan connection video signal output needle stand of video signal driving chip,
Video signal is exported to ancillary equipment by connecing video signal and exporting needle stand.
Video signal of the present utility model is input into needle stand using the pricking with needle as BNC connectors, original for connecting
BNC connects pin.
Electrical/optical conversion module of the present utility model also includes clock chip one and power module one, clock chip one and electricity
Source module one is connected with video signal modulus conversion chip, offer synchronised clock of the clock chip one for system, power module
One is each module for power supply in module.
Optical electrical conversion module of the present utility model also includes clock chip two and power module two, clock chip two and electricity
Source module two is connected with video signal analog-digital chip, offer synchronised clock of the clock chip two for system, power module
Two is each module for power supply in module
Video signal modulus conversion chip of the present utility model and video signal analog-digital chip are all connected with LED and show
Module, for showing the working condition of video port and fiber port.
Optical interface of the present utility model one and optical interface two adopt FC, ST optical port.
Module of the present utility model can directly replace original video BNC socket, and the optical interface one of the module and light connect
The profile width and height of mouth two is consistent with bnc interface.
The beneficial effects of the utility model：
Structure of the present utility model greatly reduces technology of original device upgrade with BNC video interfaces for optical interface
Difficulty, saves the development time of device communication module, while improve stability and concordance.
Description of the drawings
Fig. 1 is this utility model embedded video signal electrooptic conversion module theory diagram.
Fig. 2 is this utility model embedded video signal photoelectric conversion module theory diagram.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further described.
As shown in figure 1, electrical/optical conversion module designs a connector interface P1 first（Two faller gill pins）, with original BNC
Pin PIN to PIN connect, and such module can be directly welded at original BNC device positions, can believe the video of outside
Number it is incorporated in module.Video connects video signal driving chip first, video signal is carried out coupling, bandwidth filtering, clamper
Process with impedance matching etc., after process, output signal is connected to video signal modulus conversion chip, video signal analog digital conversion core
Piece carries out analog digital conversion, video signal ciphering, parallel-serial conversion to the video signal being input into and is converted into LVDS signals, video signal
The LVDS of modulus conversion chip output is signally attached to driver, the power of enhancing signal.The output direct drive electricity of driver/
Light crossover connection exports optical signal, and optical signal is by optical interface output to optical fiber.Clock chip is connected to video signal analog digital conversion
Chip, used as system synchronization clock.LED is connected to video signal modulus conversion chip, for indicating that video port is defeated
Enter the working condition with fiber port output.
As shown in Fig. 2 optical signal is accessed optical electrical conversion by described optical electrical conversion module optical interface one end connection optical fiber
Signal is made shaping, amplitude and is amplified by pipe, the LVDS signal outputs that optical electrical crossover connection is exported to post amplifier, post amplifier,
The LVDS signals of standard are adjusted to, LVDS signals are admitted to video signal digital-to-analogue process chip, video signal digital-to-analogue process chip
LVDS signals to being input into carry out serioparallel exchange, video signal decryption, digital-to-analogue conversion, export video signal, the simulation letter of output
Video signal driver number is connected to, drive circuit is made to drive to video signal and strengthened, and enhanced video signal is connected
Needle stand is exported to video signal, is exported to ancillary equipment.Clock chip is connected to video signal modulus conversion chip, used as module
Reference clock.LED is connected to video signal modulus conversion chip, for indicating video port output and fiber port
The working condition of input.
This utility model embedded video photoelectric conversion module includes optical interface（FC, ST optical fiber of optional standard connects
Mouthful）, electro-optic conversion pipe and photoelectric conversion tube（Can be from the BOSA-FC of the bright sunlight in Wuhan）, post amplifier（Can select
The Max3747 of the i7052 of iCreate companies, MAXIM company）, driver（Can be from the ux2222 companies of the excellent news in Xiamen
Max3646, max3738 of i7052, MAXIM company）, video signal modulus conversion chip（Wuxi Si Taidi companies can be selected
SC2210）, video signal analog-digital chip（Can be from the SC2710 of Wuxi Si Taidi companies）, video signal driving core
Piece（Can be from the SC6362 of Wuxi Si Taidi companies）.Electrical interface connector（From the general 2pin pricking with needle in market）, power supply mould
Block（From AS1117-3.3V）, clock crystal oscillator（From the 25MHZ crystal oscillators of Surface Mount）, LED（（From the yellow of Surface Mount
With green LEDs pipe）.
The course of work of the present utility model is：
Electro-optic conversion module is directly welded at original BNC pin positions using pricking with needle P1, and the video signal of outside is drawn
Enter in module.Video is imported into video signal driving chip U1, video signal is carried out coupling, bandwidth filtering, clamper and
The process such as impedance matching, after process, output signal is connected to video signal modulus conversion chip U2, video signal analog digital conversion core
Piece U2 carries out analog digital conversion, digital encryption, parallel-serial conversion to the video signal being input into and is converted into LVDS signals, LVDS signals
It is connected to driver D1, the driving force of enhancing signal.The output direct drive electrical/optical crossover connection U3 output light letters of driver
Number, optical signal is exported by optical interface J1, is directed into optical fiber, and such analog video signal has been converted into optical signal output.
Clock chip U5 is connected to video signal modulus conversion chip U2, used as system synchronization clock.Power module U4 carries out power supply and turns
Change, from the voltage that 5V voltage conversions are 3.3V, there is provided to video signal driving chip, video signal modulus process chip and driving
Pipe.
Optical signal is accessed optical electrical crossover connection U6 by optical electrical conversion module optical interface J2 connection optical fiber, and optical electrical crossover connection is defeated
The LVDS signal outputs for going out to post amplifier D2, is made shaping, amplitude and is amplified by post amplifier, is adjusted to standard by LVDS signals
The LVDS signals of amplitude, LVDS signals are admitted to video signal digital-to-analogue process chip U7, and video signal digital-to-analogue process chip is to defeated
The LVDS signals for entering carry out serioparallel exchange, video signal decryption, digital-to-analogue conversion, export video signal, and the analogue signal of output connects
Be connected to video signal driving chip U8, driving chip carries out coupling to video signal, bandwidth filtering, clamper and impedance matching etc.
Reason, the video signal after process are connected to video signal output needle stand P2, and needle stand is directly connected to former BNC pin positions, defeated
Go out video signal to ancillary equipment.So optical signal has been converted into video signal output.Clock chip U10 is connected to video letter
Number analog-digital chip, used as the reference clock of module.Power module U9 carries out Power convert, from 5V voltage conversions for 3.3V's
Voltage, there is provided to video signal driving chip, video signal digital-to-analogue process chip and post amplifier.
Video signal digital-to-analogue process chip, video signal modulus process chip export two-way display lamp simultaneously, are respectively used to
Indicate the working condition of optical port and video port.
Synchronous network clock is admitted at video signal digital-to-analogue process chip, video signal modulus using the clock of 27MHZ
Reason chip, carries out synchronization and the lock phase of port optical signal and the signal of telecommunication in chip internal.
Above content describes ultimate principle of the present utility model, principal character and advantage.The technical staff of the industry should
The understanding, this utility model are not restricted to the described embodiments, and described in above-described embodiment and description is to illustrate this reality
With new principle, on the premise of without departing from this utility model spirit and scope, this utility model also have various change and
Improve, these changes and improvements are both fallen within the range of claimed this utility model.The claimed scope of this utility model by
Appending claims and its equivalent circle..
This utility model is not directed to partly same as the prior art or can be realized using prior art.
Claims (7)
1. a kind of embedded video signal photoelectricity modulus of conversion group, it is characterised in that：It includes two paired modules, be respectively by
Video signal is converted into the electrical/optical conversion module of optical signal and converts optical signals to the optical electrical conversion module of video signal；Its
In, electrical/optical conversion module include video signal input needle stand, video signal driving chip one, video signal modulus conversion chip,
Driver, electrical/optical crossover connection and optical interface one；Described video signal input needle stand is used for connecting outer video signal, internal
Connection video signal driving chip one, the signal output part connection video signal modulus conversion chip of video signal driving chip one
Input, the serial signal outfan of video signal modulus conversion chip connects the input of driver, the output of driver
The electric signal input end of end connection electrical/optical crossover connection, the light signal output end of electrical/optical crossover connection are connected to light by optical interface one
It is fine；Optical electrical conversion module includes optical interface two, optical electrical crossover connection, post amplifier, video signal analog-digital chip, video
Signal driving chip two and video signal output needle stand；One end connection optical fiber of described optical interface two, other end connection optical electrical
The signal input part of crossover connection, the serial digital signal outfan connection post amplifier of optical electrical crossover connection, post amplifier
Signal output part connects the input of video signal analog-digital chip, the video signal output of video signal analog-digital chip
End connects the signal input part of video signal driving chip two, the outfan connection video signal output of video signal driving chip
Needle stand, exports video signal to ancillary equipment by connecing video signal and exporting needle stand.
2. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：Video signal input pin
Seat connects pin using the pricking with needle as BNC connectors for connecting original BNC.
3. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：Electrical/optical changes module
Also include that clock chip one and power module one, clock chip one and power module one are connected with video signal modulus conversion chip
Connect, offer synchronised clock of the clock chip one for system, power module one are each module for power supply in module.
4. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：Optical electrical changes module
Also include that clock chip two and power module two, clock chip two and power module two are connected with video signal analog-digital chip
Connect, offer synchronised clock of the clock chip two for system, power module two are each module for power supply in module.
5. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：Video signal modulus turns
Change chip and video signal analog-digital chip is all connected with LED display module, for showing video port and fiber port
Working condition.
6. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：Optical interface one and light connect
Mouth two adopts FC, ST optical port.
7. embedded video signal photoelectricity modulus of conversion group according to claim 1, it is characterised in that：The module can be direct
Replace original video BNC socket, the profile width and height of the optical interface one and optical interface two of the module and bnc interface one
Cause.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621001141.6U CN206042241U (en) | 2016-08-31 | 2016-08-31 | Embedded video signal photoelectric conversion module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621001141.6U CN206042241U (en) | 2016-08-31 | 2016-08-31 | Embedded video signal photoelectric conversion module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206042241U true CN206042241U (en) | 2017-03-22 |
Family
ID=58299658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621001141.6U Active CN206042241U (en) | 2016-08-31 | 2016-08-31 | Embedded video signal photoelectric conversion module |
Country Status (1)
| Country | Link |
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| CN (1) | CN206042241U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108307129A (en) * | 2017-12-12 | 2018-07-20 | 天津津航计算技术研究所 | A kind of multi-channel optical fibre video switching system based on FC-AV agreements |
| CN109951653A (en) * | 2018-11-12 | 2019-06-28 | 中国兵器装备集团上海电控研究所 | CAN instruction switching multichannel multi-format photoelectric video signal output system and method |
-
2016
- 2016-08-31 CN CN201621001141.6U patent/CN206042241U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108307129A (en) * | 2017-12-12 | 2018-07-20 | 天津津航计算技术研究所 | A kind of multi-channel optical fibre video switching system based on FC-AV agreements |
| CN109951653A (en) * | 2018-11-12 | 2019-06-28 | 中国兵器装备集团上海电控研究所 | CAN instruction switching multichannel multi-format photoelectric video signal output system and method |
| CN109951653B (en) * | 2018-11-12 | 2021-05-04 | 中国兵器装备集团上海电控研究所 | CAN instruction switching multi-path multi-format photoelectric video signal output system and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |