CN205610843U - Ocean vessel satellite communication video data compression box and system - Google Patents
Ocean vessel satellite communication video data compression box and system Download PDFInfo
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- CN205610843U CN205610843U CN201620110216.8U CN201620110216U CN205610843U CN 205610843 U CN205610843 U CN 205610843U CN 201620110216 U CN201620110216 U CN 201620110216U CN 205610843 U CN205610843 U CN 205610843U
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Abstract
The utility model discloses an ocean vessel satellite communication video data compression box and system, include: the data interface who assembles the chip and be arranged in being connected with the front end image acquisition equipment of boats and ships LAN, wherein, total chip passes through data bus and is connected with data interface, total chip includes: DSP controller, DMA controller, video encoder and memory, the DSP controller is connected with DMA controller, video encoder respectively, video encoder is connected with DMA controller, memory respectively. Adopt the utility model discloses technical scheme can reduce boats and ships surveillance video code stream by a wide margin, realizes that the land bank is to the video long -range real time monitoring of ocean vessel.
Description
Technical field
This utility model relates to foreign-going ship technical field of satellite communication, particularly relates to a kind of foreign-going ship satellite communication video data compression box and system.
Background technology
The foreign-going ship navigated by water at sea is when running into urgent or unsafe condition, it is often desirable to be transferred back to by the video image on ship in real time the shipping company of land bank, video communication between the ship bank of foreign-going ship to be realized under the conditions of current technology, can only be by means of maritime satellite communications mode.And the features such as the transmission instability that maritime satellite communications has transmission belt width, transmission cost is high, transmission delay is big, delay jitter is big, high shared ratio causes.As current foreign-going ship use most common, be also state-of-the-art Inmarsat satellite broadband communication system FleetBroadband, its maximum transmission rate only 432kbps, and every M data flow transmission cost is up to 24 dollars.
Existing foreign-going ship monitor video system mainly includes front-end image collecting device and local two parts of image storage apparatus.Front-end image collecting device includes the equipment such as one or more video camera and matched camera lens, The Cloud Terrace, protective cover, cloud mirror decoder, infrared lamp and voice collecting, to realize the collection of image information, voice messaging, warning message and status information.Shooting situation is converted to analog/digital video signal by front-end image collecting device, then passes to local image storage apparatus and store.Local image storage apparatus will be linked on boats and ships LAN, such as computer, the panel computer etc. of the terminal in boats and ships LAN image capable of displaying live view or call history and record a video.These video signals are before uncompressed, because its code stream is the biggest, limited by satellite transmission feature and satellite transmission cost and video cannot be passed back to land bank, even if some foreign-going ship employs the equipment of the H.264 compress technique of standard, but the bandwidth of video signal code stream relative satellite communication is limited the most greatly and still.And bank end terminal is when checking video, needing to communicate with front-end image collecting device, front-end image collecting device Zhong mono-road video can only be checked by a bank end terminal, it is impossible to realizes multiple terminal and checks same road video simultaneously.
For realizing the land bank remote real-time monitoring to foreign-going ship video, video flowing is carried out Efficient Compression by crucial technical problem is that, significantly lower its code stream so that it is meet the transmission characteristic under foreign-going ship satellite communication, to realize the long-range monitoring to ship end video of the bank end.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of foreign-going ship satellite communication video data compression box and system, can reduce ship monitor video code flow, it is achieved the land bank remote real-time monitoring to marine ship video.
For solving above technical problem, this utility model embodiment provides a kind of foreign-going ship satellite communication video data compression box, including: total chip with for the data-interface being connected with the front-end image collecting device in boats and ships LAN；
Wherein, described total chip is connected with described data-interface by data/address bus；
Described total chip includes: dsp controller, dma controller, video encoder and memorizer；
Described dsp controller is connected with described dma controller, described video encoder respectively；
Described video encoder is connected with described dma controller, described memorizer respectively.
Further, described data-interface includes: RJ45 interface, audio input/output interface and video input/output interface.
Further, described video encoder be model be AOKU VE801, AOKU VE8000, AOKU HE803 or the video encoder of AOKU HT9001.
Further, described boats and ships LAN is to connect satellite modem and Shipborne satellite antenna.
On the other hand, this utility model provides a kind of foreign-going ship satellite communication system, including: Shipborne satellite antenna, satellite modem, switch, boats and ships LAN, front-end image collecting device and the foreign-going ship satellite communication video data compression box described in any of the above-described item；
Wherein, described Shipborne satellite antenna and described satellite modem connect；
Described satellite modem and described switch connect；
Described boats and ships LAN is connected with described switch, described front-end image collecting device and described foreign-going ship satellite communication video data compression box respectively.
Further, described foreign-going ship satellite communication system also includes: bank end server；
Described bank end server is communicated to connect with described Shipborne satellite antenna by satellite link private network.
Visible, the foreign-going ship satellite communication video data compression box that this utility model embodiment provides is become with data interface group by total chip.Wherein, data-interface is for being connected with the front-end image collecting device in boats and ships LAN, and total chip includes: dsp controller, dma controller, video encoder and memorizer.After the audiovisual presentation of front-end image collecting device collection is compressed coding by data-interface, land bank server is passed back to by shipborne satellite communication system and satellite transmission channel through boats and ships LAN, bank end equipment pass through internet access land bank server, boats and ships head end video is carried out real time imaging check or history video recording check.Compared to prior art, audio-video signal is compressed processing by this compression box, can significantly reduce ship monitor video code flow, it is adapted for foreign-going ship satellite communication requirement, and by the video flowing forwarding capability of land bank server, realize ship end and send a road video flowing, can check at the multiple terminal unit of land bank simultaneously, it is to avoid ship end equipment is uploaded because of multi-channel video and caused transmission bandwidth to block up and delivery flow rate multiplication problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the foreign-going ship satellite communication video data compression box that this utility model provides；
Fig. 2 is the structural representation of the another kind of embodiment of foreign-going ship satellite communication video data compression box of the present utility model；
Fig. 3 is the attachment structure schematic diagram of a kind of embodiment of the foreign-going ship satellite communication system that this utility model provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.
See Fig. 1, be the structural representation of a kind of embodiment of the foreign-going ship satellite communication video data compression box that this utility model provides.This foreign-going ship satellite communication video data compression box includes: total chip 1 and for the data-interface 2 being connected with the front-end image collecting device in boats and ships LAN.
Wherein, total chip 1 is connected with data-interface 2 by data/address bus.Total chip 1 includes: dsp controller 11, dma controller 12, video encoder 13 and memorizer 14.Dsp controller 11 is connected with dma controller 12, video encoder 13 respectively.Video encoder 13 is connected with dma controller 12, memorizer 14 respectively.
As a kind of citing of the present embodiment, see the structural representation that Fig. 2, Fig. 2 are the another kind of embodiments of foreign-going ship satellite communication video data compression box of the present utility model.The difference of Fig. 2 with Fig. 1 is, data-interface 2 includes: RJ45 interface 21, audio input/output interface 22 and video input/output interface 23.Wherein, data-interface 2 is linked in boats and ships LAN, is connected with the front-end image collecting device of boats and ships LAN configuration.The audiovisual presentation of collection is transferred to total chip 1 by data-interface 2 by front-end image collecting device, after total chip 1 carries out compression coding to audiovisual presentation, is sent to the server of land by boat-carrying satellite communication antena.
In the present embodiment, dsp controller 11 (digital singnal processor is called for short DSP) is the microprocessor of a kind of uniqueness, is to process the device of bulk information with digital signal.Its operation principle is to receive analogue signal, is converted to the digital signal of 0 or 1, then modifies digital signal, deletes, strengthens, and in other system chip, numerical data is interpreted back analog data or actual environment form.It is the most programmable, and time in fact the speed of service up to every number of seconds with ten million bar complicated order program, considerably beyond general purpose microprocessor, be the computer chip become more and more important in the digitalized electron world.Its powerful data-handling capacity and the high speed of service, be the big characteristics of the most commendable two.
Dsp controller 11 typically has a following main feature:
(1) multiplication and a sub-addition can be completed within an instruction cycle；
(2) program and data space is separately, can access instruction and data simultaneously；
(3) there is quick RAM in sheet, generally can be accessed in two pieces by independent data/address bus simultaneously；
(4) there is low overhead or without overhead loop and the hardware supported that redirects；
(5) quickly interrupt processing and Hardware I/O support；
(6) there are multiple hardware address generators of operation within the monocycle；
(7) can be with the multiple operation of executed in parallel；
(8) support pile line operation, make fetching, decode and the operation such as execution can be with Overlapped Execution.
In the present embodiment, DMA (Direct Memory Access) controller 12 is a kind of unique peripheral hardware in internal system transfer data, can be regarded as a kind of controller that can be coupled together by the peripheral hardware of inside and outside memorizer Yu each DMA of having ability by one group of dedicated bus.Why it belongs to peripheral hardware, and being because it is to perform transmission under the programming Control of processor.It has the backstage bulk transfer capacity independent of CPU, it is possible to meet scan picture high speed data transportation requirements.
As a kind of citing of the present embodiment, video encoder 13 can be, but not limited to be to use non-standard, proprietary, to have high compression ratio performance video encoder.This video coding technique is based on H.264 carrying out secondary development, on the premise of ensureing inconspicuous damage video monitoring image quality, use unique prediction, convert, quantify and the encryption algorithm of uniqueness, by various algorithms and strategies such as picture examination, image resolution ratio, frame per second, color fidelities, video flowing decomposed, calculate, recombination, it is achieved Efficient Compression performance.Verifying after tested, under conditions of intimate equal image quality, the compression efficiency of this proprietary coding techniques is 5-10 times of standard encoding technique.The tissue formulating video coding and decoding technology at present in the world has two, one is " International Telecommunication Association (ITU-T) ", H.261 the standard that it is formulated have, H.263, H.263+, H.264, H.265 etc., another is that " International Organization for Standardization (ISO) " its standard of formulating has MPEG-1, MPEG-2, MPEG-4 etc..Case data according to test shows, the 720P video image that one picture is the biggest, according to H.264 standard codec compression mode, video code flow is averagely at about 2Mbps, thus cannot Broadband Satellite system transfers aboard ship, and use this compression box, picture quality impaired acceptable in the case of, video code flow is compressed to 240kbps-400kbps, can be the most smoothly at boat-carrying Broadband Satellite system transfers.
In the present embodiment, the audiovisual presentation after processing can be stored by memorizer 14, accesses video data compression box for the equipment on boats and ships by boats and ships LAN, to check each road audio frequency and video.
See the attachment structure schematic diagram that Fig. 3, Fig. 3 are a kind of embodiments of the foreign-going ship satellite communication system that this utility model provides.As it is shown on figure 3, this communication system includes: bank end server 301, Shipborne satellite antenna 302, satellite modem 303, switch 304, boats and ships LAN 305, front-end image collecting device 306 and foreign-going ship satellite communication video data compression box 307.Wherein, bank end server 301 is communicated to connect with Shipborne satellite antenna 3002 by satellite link private network.Shipborne satellite antenna 302 and satellite modem 303 connect.Satellite modem 303 and switch 304 connect.Boats and ships LAN 305 is connected with switch 304, front-end image collecting device 306 and foreign-going ship satellite communication video data compression box 307 respectively.This illustrates that video data compression box of the present utility model can continue to use original ship equipment structure, the independent video signal reading front-end image collecting device, after it carries out secondary coding compression, obtain low code stream and the IP video signal of fine definition, sent it to the server of land configuration again by geo-synchronous orbit satellite by shipborne satellite communication system, realize ship end and send a road video flowing, can check at the multiple terminal unit of land bank simultaneously, boats and ships satellite communication system is avoided to upload, because of multi-channel video, the problem causing satellite transmission channel congested and video cannot be returned.
Visible, the video data compression box that this utility model embodiment provides is become with data interface group by total chip.Wherein, data-interface is for being connected with the front-end image collecting device in boats and ships LAN, and total chip includes: dsp controller, dma controller, video encoder and memorizer.After the audiovisual presentation of front-end image collecting device collection is compressed coding by data-interface, land bank server is passed back to through boats and ships LAN and boat-carrying satellite communication, bank end terminal presentation facility passes through internet access land bank server, boats and ships head end video carries out real time imaging and checks or check that history is recorded a video.Compared to prior art, the long-range monitoring to foreign-going ship video of the land bank can be realized.This utility model can significantly reduce ship monitor video code flow, it is adapted for foreign-going ship satellite communication requirement and by land bank period of service video flowing forwarding capability, realize ship end and send a road video flowing, can check at the multiple terminal unit of land bank, it is to avoid boats and ships satellite communication system uploads, because of multi-channel video, the problem causing satellite transmission channel congested and cannot return video simultaneously.
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (6)
1. a foreign-going ship satellite communication video data compression box, it is characterised in that including: total chip and for the data-interface being connected with the front-end image collecting device in boats and ships LAN；
Wherein, described total chip is connected with described data-interface by data/address bus；
Described total chip includes: dsp controller, dma controller, video encoder and memorizer；
Described dsp controller is connected with described dma controller, described video encoder respectively；
Described video encoder is connected with described dma controller, described memorizer respectively.
Foreign-going ship satellite communication video data compression box the most according to claim 1, it is characterised in that described data-interface includes: RJ45 interface, audio input/output interface and video input/output interface.
Foreign-going ship satellite communication video data compression box the most according to claim 1, it is characterised in that described video encoder be model be AOKU VE801, AOKU VE8000, AOKU HE803 or the video encoder of AOKU HT9001.
Foreign-going ship satellite communication video data compression box the most according to claim 1, it is characterised in that described boats and ships LAN is the LAN connecting and having satellite modem and Shipborne satellite antenna.
5. a foreign-going ship satellite communication system, it is characterized in that, including: Shipborne satellite antenna, satellite modem, switch, boats and ships LAN, front-end image collecting device and the foreign-going ship satellite communication video data compression box as described in any one of Claims 1-4；
Wherein, described Shipborne satellite antenna and described satellite modem connect；
Described satellite modem and described switch connect；
Described boats and ships LAN is connected with described switch, described front-end image collecting device and described foreign-going ship satellite communication video data compression box respectively.
Foreign-going ship satellite communication system the most according to claim 5, it is characterised in that also include: bank end server；
Described bank end server is communicated to connect with described Shipborne satellite antenna by satellite link private network.
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| CN201620110216.8U CN205610843U (en) | 2016-02-03 | 2016-02-03 | Ocean vessel satellite communication video data compression box and system |
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| CN201620110216.8U CN205610843U (en) | 2016-02-03 | 2016-02-03 | Ocean vessel satellite communication video data compression box and system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347646A (en) * | 2018-11-27 | 2019-02-15 | 北京空间技术研制试验中心 | Incorporate image communication system based on multicast |
| CN110401477A (en) * | 2019-07-01 | 2019-11-01 | 闽江学院 | A kind of method of long range fishing information collection passback processing |
| CN111405378A (en) * | 2019-01-02 | 2020-07-10 | 胡晓平 | Satellite communication video narrow-band communication system |
| CN113596377A (en) * | 2021-08-02 | 2021-11-02 | 北京数码视讯技术有限公司 | Monitoring video conversion device and system for satellite communication |
| CN115209101A (en) * | 2022-06-28 | 2022-10-18 | 珠海云洲智能科技股份有限公司 | Video transmission method, video transmission device, video transmission system and control equipment |
| CN117692649A (en) * | 2024-02-02 | 2024-03-12 | 广州中海电信有限公司 | Ship remote monitoring video efficient transmission method based on image feature matching |
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2016
- 2016-02-03 CN CN201620110216.8U patent/CN205610843U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347646A (en) * | 2018-11-27 | 2019-02-15 | 北京空间技术研制试验中心 | Incorporate image communication system based on multicast |
| CN111405378A (en) * | 2019-01-02 | 2020-07-10 | 胡晓平 | Satellite communication video narrow-band communication system |
| CN110401477A (en) * | 2019-07-01 | 2019-11-01 | 闽江学院 | A kind of method of long range fishing information collection passback processing |
| CN113596377A (en) * | 2021-08-02 | 2021-11-02 | 北京数码视讯技术有限公司 | Monitoring video conversion device and system for satellite communication |
| CN115209101A (en) * | 2022-06-28 | 2022-10-18 | 珠海云洲智能科技股份有限公司 | Video transmission method, video transmission device, video transmission system and control equipment |
| CN115209101B (en) * | 2022-06-28 | 2023-08-29 | 珠海云洲智能科技股份有限公司 | Video transmission method, video transmission device, video transmission system and control equipment |
| CN117692649A (en) * | 2024-02-02 | 2024-03-12 | 广州中海电信有限公司 | Ship remote monitoring video efficient transmission method based on image feature matching |
| CN117692649B (en) * | 2024-02-02 | 2024-04-19 | 广州中海电信有限公司 | Ship remote monitoring video efficient transmission method based on image feature matching |
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