CN105100693A - High-definition video signal transmission device - Google Patents
High-definition video signal transmission device Download PDFInfo
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- CN105100693A CN105100693A CN201410213353.XA CN201410213353A CN105100693A CN 105100693 A CN105100693 A CN 105100693A CN 201410213353 A CN201410213353 A CN 201410213353A CN 105100693 A CN105100693 A CN 105100693A
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- circuit board
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Abstract
The invention discloses a high-definition video signal transmission device, which comprises a circuit board. The device is characterized in that the circuit board is provided thereon with a control chip. The control chip is electrically connected with a fast Ethernet physical layer transceiver through SMT components. The fast Ethernet physical layer transceiver is electrically connected with a network signal conversion chip through SMT components. The circuit board is provided with a network signal interface connected with the network signal conversion chip. The circuit board is further provided with an infrared lamp signal interface connected with the control chip, a power interface, an audio signal interface, and an IR-CUT switcher RT interface. The device has the advantages of no compression of signals and no transmission delay of signals. In this way, images are clearer, smoother and more direct. The monitoring effect is clearly superior to the network high-definition effect.
Description
Technical field
The present invention relates to video transfer techniques, be specifically related to a kind of HD video conveyer.
Background technology
In the prior art, the transmission of camera shooting and video is by the MDIX such as HUB, network switch kind equipment, transmitting terminal and receiving terminal directly connect with CAT5 or CAT6 netting twine is point-to-point, by network data link layer, unpressed real-time high-definition signal is sent to receiving terminal through the sequence of scientific and efficient tissue by video camera end, thus realize the laser propagation effect of equivalent HD-SDI, this transmission means, antijamming capability is not strong, and definition is not high.
Summary of the invention
The object of the invention is to: for the above-mentioned defect of prior art, provide one not need the MDIX such as HUB, network switch equipment, and the conveyer of HD video can be transmitted.
A kind of high-definition video signal conveyer is provided, comprise a circuit board, described circuit board is provided with control chip, described control chip is electrically connected with Fast Ethernet physical layer transceiver by SMD components, described Fast Ethernet physical layer transceiver is electrically connected with network signal conversion chip by SMD components, described circuit board is provided with the network signal interface be connected with described network signal conversion chip, circuit board is also provided with the infrared lamp signal interface be connected with described control chip, power supply and audio signal interface, the two optical-filter switcher interface of IR-CUT.
In above-mentioned high-definition video signal conveyer, the model of described control chip is: LM7201; The model of described Fast Ethernet physical layer transceiver is BTL8211EG; The model of described network signal conversion chip is: M3295NL.
The invention has the advantages that: signal, without compression, makes image more clear without delay transport, more smooth, more directly, supervise successful and be better than network high definition.What adopt is pure physical layer, and without the electronic system framework of operating system, volume is little, low in energy consumption, and stability is obviously better than high-definition network camera.Point-to-point physical connection mode, relative to the bus mode of network, stability is higher, reliability, and practicality is all stronger.The passback of non-compressed video data stream, be convenient to the process of rear end equipment, comprise display, switching and data analysis high-definition digital signal and directly return hundreds of rice to MDI back-end code device, the processor in rear end carries out dual code stream or many code streams high definition coding, relative to the network HD video of each system (hardware and software) in front end, namely cost-saving, in turn enhance reliability.Raw digital video flows to rear end, is convenient to direct display, does not need the decompress(ion) of compressing video frequency flow, saves rear end DSP calculation resources; Use same transmission medium (surpassing five class netting twines or six class netting twines), without the need to additional line cost.And can two way audio be realized while transmission video signal, the transmission of double-direction control signal etc., also can use the pattern of POE Power-over-Ethernet, greatly save wiring cost.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention.
Embodiment
With reference to shown in Fig. 1: design a kind of high-definition video signal conveyer, be provided with a circuit board 1, be provided with control chip 5 on the circuit card 1, control chip 5 is electrically connected with Fast Ethernet physical layer transceiver 8 by SMD components, Fast Ethernet physical layer transceiver 8 is electrically connected with network signal conversion chip 4 by SMD components, described circuit board 1 is provided with the network signal interface 3 be connected with described network signal conversion chip 4, circuit board 1 is also provided with the infrared lamp signal interface 6 be connected with described control chip 5, power supply and audio signal interface 2, the two optical-filter switcher interface 7 of IR-CUT.
In above-mentioned high-definition video signal conveyer, the model of control chip is: LM7201; The model of described Fast Ethernet physical layer transceiver is RTL8201BL; The model of network signal conversion chip is: M3295NL.
The present invention does not pass through HUB, the MDIX kind equipments such as the network switch, transmitting terminal and receiving terminal directly connect with CAT5 or CAT6 netting twine is point-to-point, by network data link layer, unpressed real-time high-definition signal is sent to receiving terminal through the sequence of scientific and efficient tissue by video camera end, thus realize the laser propagation effect of equivalent HD-SDI, owing to using the physical layer hardware of the Fast Ethernet of IT industry maturation, the transmission of HD-MDI is compared can be more cheap with co-axial cables transport, more stable, anti-interference ability is stronger, and can two way audio be realized while transmission video signal, the transmission of double-direction control signal etc., also the pattern of POE Power-over-Ethernet can be used, greatly save wiring cost.The second generation product of HD-MDI can adopt the transmitting physical layer device of more advanced technologies, to realize repeaterless transmission and the transmission rate more at a high speed of longer distance, the terminal equipment that repeaterless transmission reaches about 500 meters can be realized with CAT5 netting twine, and realize the transmission of 1080P 60 frames per second, to meet the demand of security protection middle and high end client to high-definition image completely.
Be the physical layer transceiver of a single port, it only has a MII/SNI(Media Independent Interface/serial network interface) interface.It achieve whole 10/100M ethernet physical layer functions, comprise physical layer encodes sublayer (PCS), physical layer medium connection device (PMA), twisted pair physical medium associated sub-layer (TP-PMD), 10Base-Tx encoding and decoding and twisted-pair feeder medium access unit (TPMAU).RTL8201BL can at NIC, MAU, CNR, ACR, Ethernet HUB, or uses in Ethernet switch.In addition, it also may be used for anyly having ethernet mac and need a twisted pair line connection physically or optical fiber PECL interface to connect the embedded system of an outside 100base-FX optical fiber transceiver module.
The invention has the advantages that: without compression, make image more clear without delay transport, more smooth, more directly, supervise successful and be better than network high definition.What adopt is pure physical layer, and without the electronic system framework of operating system, volume is little, low in energy consumption, and stability is obviously better than high-definition network camera.Point-to-point physical connection mode, relative to the bus mode of network, stability is higher, reliability, and practicality is all stronger.The passback of non-compressed video data stream, be convenient to the process of rear end equipment, comprise display, switching and data analysis high-definition digital signal and directly return hundreds of rice to MDI back-end code device, the processor in rear end carries out dual code stream or many code streams high definition coding, relative to the network HD video of each system (hardware and software) in front end, namely cost-saving, in turn enhance reliability.Raw digital video flows to rear end, is convenient to direct display, does not need the decompress(ion) of compressing video frequency flow, saves rear end DSP calculation resources; Use same transmission medium (surpassing five class netting twines or six class netting twines), without the need to additional line cost.
Claims (2)
1. a high-definition video signal conveyer, comprise a circuit board, it is characterized in that: on described circuit board, be provided with control chip, described control chip is electrically connected with Fast Ethernet physical layer transceiver by SMD components, described Fast Ethernet physical layer transceiver is electrically connected with network signal conversion chip by SMD components, described circuit board is provided with the network signal interface be connected with described network signal conversion chip, circuit board is also provided with the infrared lamp signal interface be connected with described control chip, power supply and audio signal interface, the two optical-filter switcher RT interface of IR-CUT.
2. high-definition video signal conveyer according to claim 1, is characterized in that: the model of described control chip is: LM7201; The model of described Fast Ethernet physical layer transceiver is RTL8201BL; The model of described network signal conversion chip is: M3295NL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213353.XA CN105100693A (en) | 2014-05-21 | 2014-05-21 | High-definition video signal transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213353.XA CN105100693A (en) | 2014-05-21 | 2014-05-21 | High-definition video signal transmission device |
Publications (1)
| Publication Number | Publication Date |
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| CN105100693A true CN105100693A (en) | 2015-11-25 |
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| CN201410213353.XA Pending CN105100693A (en) | 2014-05-21 | 2014-05-21 | High-definition video signal transmission device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610351A (en) * | 2008-06-18 | 2009-12-23 | 中国科学院自动化研究所 | Vision sensor of robot |
| CN201966936U (en) * | 2011-01-17 | 2011-09-07 | 内蒙古民网通信科技有限公司 | Ethernet number receiving and transmission module |
| US20120257064A1 (en) * | 2010-02-01 | 2012-10-11 | Youngkook Electronics Co, Ltd | Tracking and monitoring camera device and remote monitoring system using same |
| CN203014976U (en) * | 2013-01-09 | 2013-06-19 | 深圳市智美达科技有限公司 | Wireless network infrared high-definition video camera |
-
2014
- 2014-05-21 CN CN201410213353.XA patent/CN105100693A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610351A (en) * | 2008-06-18 | 2009-12-23 | 中国科学院自动化研究所 | Vision sensor of robot |
| US20120257064A1 (en) * | 2010-02-01 | 2012-10-11 | Youngkook Electronics Co, Ltd | Tracking and monitoring camera device and remote monitoring system using same |
| CN201966936U (en) * | 2011-01-17 | 2011-09-07 | 内蒙古民网通信科技有限公司 | Ethernet number receiving and transmission module |
| CN203014976U (en) * | 2013-01-09 | 2013-06-19 | 深圳市智美达科技有限公司 | Wireless network infrared high-definition video camera |
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Application publication date: 20151125 |
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