CN105049797A - Video signal remote transmission realizing method - Google Patents
Video signal remote transmission realizing method Download PDFInfo
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- CN105049797A CN105049797A CN201510399617.XA CN201510399617A CN105049797A CN 105049797 A CN105049797 A CN 105049797A CN 201510399617 A CN201510399617 A CN 201510399617A CN 105049797 A CN105049797 A CN 105049797A
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Abstract
The invention discloses a video signal remote transmission realizing method. The method is realized through an optical remote transmission module and an optical interface conversion module, wherein the optical remote transmission module includes a video decoder, an FPGA and an optical module and is mainly used for converting electrical signals into optical signals and transmitting the optical signals; and the optical interface conversion module includes an optical module, an FPGA and a video encoder and is mainly used for restoring the optical signals into electrical signals and displaying and outputting the electrical signals. Compared with the prior art, and according to the video signal remote transmission realizing method of the invention, optical fiber transmission technologies are introduced to the remote transmission field of video signals, and therefore, the transmission distance of the signals can be prolonged with a display effect ensured, and the display effect can be effectively ensured.
Description
Technical field
The present invention relates to vision signal remote argon plasma field, specifically a kind of vision signal teletransmission implementation.
Background technology
In general the communication between computer and display is realized by VGA or DVI cable, and when computer and display close together (within 10m), signal can realize complete transmission, and display effect is better.But when under some Special use environment, as control end and computer distance tens meters even up to a hundred meters time, because the antidamping of cable and interference free performance poor, the decay that vision signal obtains in various degree can be made, extreme influence display effect, therefore can be subject to the restriction of transmission range in transmitting procedure in vision signal.
Disclosed patent application document: number of patent application is " CN200920180939.5 ", name is called " remote installed meter tool image and data collector ", this document disclose one " remote installed meter tool image and data collector; remote installed meter tool image acquisition device; be located between the table gauge outfit of tool and upper cover; it is characterized in that, comprising: the object lens gathered for image information; The image information collected is generated the image signal generating circuit of video standard signal; The video standard signal that image signal generating circuit generates is carried out impedance transformation, so that length is apart from the Chief Signal Boatswain line drive circuit transmitted and the infrared generative circuit providing enough light sources when light conditions is severe; The indicating value image of table tool indicating value indicating device collects image signal generating circuit by object lens, image signal generating circuit is sent to Chief Signal Boatswain line drive circuit generated video standard signal by coaxial cable, and Chief Signal Boatswain line drive circuit carries out far-end transmission by twisted-pair feeder video standard signal after impedance transformation.Have that structure is simple, easy for installation, high accuracy and advantage easy to maintenance, can Real-time Collection and transmission data, for follow-up system without the need to data Storage and Processing circuit, whole system thus can be made easy.Can be used on any table tool (such as water meter, ammeter, gas meter etc.), widely applicable ".
Number of patent application is " CN02265251.5 ", name is called " remote installed meter tool image and data collector ", this document disclose one " remote installed meter tool image and data collector; remote installed meter tool image and data collector; be located between the table gauge outfit of tool and upper cover; it is characterized in that, comprising: the object lens gathered for image information; The image information collected is generated as the image signal generating circuit of video standard signal; The video standard signal that image signal generating circuit generates is carried out impedance transformation, so that length is apart from the Chief Signal Boatswain line drive circuit transmitted and the infrared generative circuit providing enough light sources when light conditions is severe; The indicating value image of table tool indicating value indicating device collects image signal generating circuit by object lens, image signal generating circuit is sent to Chief Signal Boatswain line drive circuit generated video standard signal by coaxial cable, and Chief Signal Boatswain line drive circuit carries out far-end transmission by twisted-pair feeder video standard signal after impedance transformation.Have that structure is simple, easy for installation, high accuracy and advantage easy to maintenance, can Real-time Collection and transmission data, for follow-up system without the need to data Storage and Processing circuit, whole system thus can be made easy.Can be used on any table tool (such as water meter, ammeter, gas meter etc.), widely applicable ".
Above-mentioned open file, does not all carry out essential improvement by antidamping and the poor cable conduction of interference free performance, does not introduce the long-distance transmissions field of optical fiber transmission technique to vision signal, thus vision signal teletransmission is carried out to the improvement of essence.
Summary of the invention
Technical assignment of the present invention is to provide a kind of vision signal teletransmission implementation.
Technical assignment of the present invention realizes in the following manner, which is realized by light remote-transmission module and optical interface modular converter two parts, wherein light remote-transmission module comprises Video Decoder, FPGA, optical module, is mainly used in converting the electrical signal to for light signal transmits; Optical interface modular converter comprises optical module, FPGA, video encoder, is mainly used in light signal being reverted to the signal of telecommunication, for display translation.
Described vision signal teletransmission implementation operating procedure is as follows:
Light remote-transmission module realizes light teletransmission step: DVI signal is provided by computer display card, utilize Video Decoder that DVI data, clock signal are decoded as parallel digital signal, FPGA processes DVI digital parallel signal, by optical module by process after video signal conversion be that light signal realizes long-distance transmissions to far-end optical interface modular converter by optical fiber; The DDC signal of DVI realizes long-distance transmissions to far-end optical interface modular converter by being transformed to light signal through optical module after FPGA process by optical fiber;
Optical interface modular converter realizes optical interface switch process: optical interface modular converter receives DVI light signal, the light signal received is converted to the high speed serialization signal of telecommunication through optical module to be sent in FPGA, enters process and export DVI data clock parallel signal and DDC two-way signaling in FPGA; The DVI data clock parallel signal exported by FPGA is standard DVI differential signal by video encoder encodes, and the standard DVI differential signal export video encoder and DDC two-way signaling are exported by interface.
Described DVI signal setting has at least one road, when being provided with more than two-way or two-way, and the corresponding Video Decoder of each road DVI signal.
Compared to the prior art optical fiber transmission technique, is incorporated into the long-distance transmissions field of vision signal by a kind of vision signal teletransmission implementation of the present invention, ensureing the downward long signal transmission distance of prerequisite of display effect, effectively ensure that display effect.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of two-way DVI flashlight teletransmission theory diagram of vision signal teletransmission implementation.
Accompanying drawing 2 is a kind of two-way DVI flashlight interface conversion theory diagram of vision signal teletransmission implementation.
Embodiment
Embodiment 1:
Which is realized by light remote-transmission module and optical interface modular converter two parts, and wherein light remote-transmission module comprises Video Decoder, FPGA, optical module, is mainly used in converting the electrical signal to for light signal transmits; Optical interface modular converter comprises optical module, FPGA, video encoder, is mainly used in light signal being reverted to the signal of telecommunication, for display translation.
Above-mentioned smooth remote-transmission module realizes light teletransmission step::
Light teletransmission step: a road DVI signal is provided by computer display card, utilize Video Decoder that DVI data, clock signal are decoded as parallel digital signal, FPGA processes a road DVI digital parallel signal, is being that light signal realizes long-distance transmissions to far-end optical interface modular converter by optical fiber by optical module by process Hou mono-road video signal conversion; The DDC signal of DVI realizes long-distance transmissions to far-end optical interface modular converter by being transformed to light signal through optical module after FPGA process by optical fiber;
Optical interface modular converter realizes optical interface switch process: optical interface modular converter receives DVI light signal, the light signal received is converted to the high speed serialization signal of telecommunication through optical module to be sent in FPGA, enters process and export DVI data clock parallel signal and DDC two-way signaling in FPGA; The DVI data clock parallel signal exported by FPGA is standard DVI differential signal by video encoder encodes, and the standard DVI differential signal export video encoder and DDC two-way signaling are exported by interface.
Embodiment 2:
Which is realized by light remote-transmission module and optical interface modular converter two parts, and wherein light remote-transmission module comprises Video Decoder, FPGA, optical module, is mainly used in converting the electrical signal to for light signal transmits; Optical interface modular converter comprises optical module, FPGA, video encoder, is mainly used in light signal being reverted to the signal of telecommunication, for display translation.
Above-mentioned smooth remote-transmission module realizes light teletransmission step::
Light teletransmission step: the DVI signal of two-way parallel connection is provided by computer display card, utilize Video Decoder that DVI data, clock signal are decoded as parallel digital signal, the DVI digital parallel signal of FPGA to two-way parallel connection processes, and is being that light signal realizes long-distance transmissions to far-end optical interface modular converter by optical fiber by optical module by the video signal conversion of two-way parallel connection after process; The DDC signal of DVI realizes long-distance transmissions to far-end optical interface modular converter by being transformed to light signal through optical module after FPGA process by optical fiber;
Optical interface modular converter realizes optical interface switch process: optical interface modular converter receives DVI light signal, the light signal received is converted to the high speed serialization signal of telecommunication through optical module to be sent in FPGA, enters process and export DVI data clock parallel signal and DDC two-way signaling in FPGA; The DVI data clock parallel signal exported by FPGA is standard DVI differential signal by video encoder encodes, and the standard DVI differential signal export video encoder and DDC two-way signaling are exported by interface.
Explanation of nouns:
FPGA: the english abbreviation being Field-ProgrammableGateArray, i.e. field programmable gate array, it is the product further developed on the basis of the programming devices such as PAL, GAL, CPLD.It occurs as a kind of semi-custom circuit in application-specific integrated circuit (ASIC) (ASIC) field, has both solved the deficiency of custom circuit, overcomes again the shortcoming that original programming device gate circuit number is limited.
DVI: the english abbreviation being DigitalVisualInterface, i.e. digital visual interface.What DVI transmitted is digital signal, digital image information does not need through any conversion, will being directly sent on display device, because this reducing the transfer process that numeral → simulation → numeral is loaded down with trivial details, greatly saving the time, therefore its speed is faster, effective elimination motion blur phenomenon, and use DVI to carry out transfer of data, signal is not decayed, color is purer, more true to nature.
By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed execution mode, described those skilled in the art can the different technical characteristic of combination in any, thus realizes different technical schemes.
Claims (3)
1. a vision signal teletransmission implementation, it is characterized in that, which is realized by light remote-transmission module and optical interface modular converter two parts, and wherein light remote-transmission module comprises Video Decoder, FPGA, optical module, is mainly used in converting the electrical signal to for light signal transmits; Optical interface modular converter comprises optical module, FPGA, video encoder, is mainly used in light signal being reverted to the signal of telecommunication, for display translation.
2. a kind of vision signal teletransmission implementation according to claim 1, is characterized in that, described vision signal teletransmission implementation operating procedure is as follows:
Light remote-transmission module realizes light teletransmission step: DVI signal is provided by computer display card, utilize Video Decoder that DVI data, clock signal are decoded as parallel digital signal, FPGA processes DVI digital parallel signal, by optical module by process after video signal conversion be that light signal realizes long-distance transmissions to far-end optical interface modular converter by optical fiber; The DDC signal of DVI realizes long-distance transmissions to far-end optical interface modular converter by being transformed to light signal through optical module after FPGA process by optical fiber;
Optical interface modular converter realizes optical interface switch process: optical interface modular converter receives DVI light signal, the light signal received is converted to the high speed serialization signal of telecommunication through optical module to be sent in FPGA, enters process and export DVI data clock parallel signal and DDC two-way signaling in FPGA; The DVI data clock parallel signal exported by FPGA is standard DVI differential signal by video encoder encodes, and the standard DVI differential signal export video encoder and DDC two-way signaling are exported by interface.
3. a kind of vision signal teletransmission implementation according to claim 2, it is characterized in that, described DVI signal setting has at least one road, when being provided with more than two-way or two-way, the corresponding Video Decoder of each road DVI signal.
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| CN107097964A (en) * | 2017-06-09 | 2017-08-29 | 山东超越数控电子有限公司 | A kind of display control device transmitted based on optical fiber |
| CN108111793A (en) * | 2018-01-03 | 2018-06-01 | 山东超越数控电子股份有限公司 | A kind of DVI signal transmission systems and its method of work based on FPGA |
| CN108234969A (en) * | 2017-12-06 | 2018-06-29 | 山东超越数控电子股份有限公司 | A kind of device and implementation method for extending DVI signal transmission distances |
| CN109803128A (en) * | 2019-01-28 | 2019-05-24 | 山东超越数控电子股份有限公司 | A kind of Video Long-distance Transfer System Controled based on FPGA |
| CN111064937A (en) * | 2019-12-23 | 2020-04-24 | 威创集团股份有限公司 | Video optical fiber seat receiving device |
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| CN109803128A (en) * | 2019-01-28 | 2019-05-24 | 山东超越数控电子股份有限公司 | A kind of Video Long-distance Transfer System Controled based on FPGA |
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| WO2021129887A1 (en) * | 2019-12-23 | 2021-07-01 | 威创集团股份有限公司 | Video optical fiber seat receiving device |
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