CN201118848Y - Control device for train video monitoring camera device - Google Patents
Control device for train video monitoring camera device Download PDFInfo
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- CN201118848Y CN201118848Y CN 200720173854 CN200720173854U CN201118848Y CN 201118848 Y CN201118848 Y CN 201118848Y CN 200720173854 CN200720173854 CN 200720173854 CN 200720173854 U CN200720173854 U CN 200720173854U CN 201118848 Y CN201118848 Y CN 201118848Y
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Abstract
The utility model relates to a controlling device of a train video image monitoring device. The utility model comprises a video data receiving unit used for receiving video data output from a camera head; a coding unit used for coding the received video data; and a logical controlling unit used for selecting the coding format of the video data, wherein, the logical controlling unit is connected with the coding unit and the video data receiving unit. Two coders with different formats are installed in the controlling device in the controlling device of the train video image monitoring device provided by the utility model, during the real-time monitoring, a group of video monitoring signals can be switched to D1 from CIF format, the other channels in the controlling device of the train video image monitoring device still maintain the original CIF codes, and the use rate of the hard disk storage space and the clarity of the real-time monitoring picture in emergent cases are improved.
Description
Technical field
The utility model relates to a kind of control appliance of camera head, particularly a kind of control appliance that is used for carrying out on the train camera head of video monitoring.
Background technology
Video monitoring is a kind of technology that develops comparative maturity at present, but uses the video monitoring technology on passenger train, have with ground on different applied environment and service conditions.The train space is narrow, long, and hidden corner is more, and train is always advanced in rocking.These factors have caused these video camera devices can not be excessive, also will install a plurality of so that can view each corner on the train; Because the restriction in space just can't use some jumbo memory devices, and these memory devices can not be changed at any time again, just can change once after wanting one on train to come and go, therefore, when video image information is recorded, just require its resolution can not be too high.
ON TRAINS, the encoding device that will use low code stream is to coding video data, and the amount of information of carrying out video data stored again will reduce greatly, to guarantee enough big memory capacity and sufficiently long time.To monitor video data working standard picture format (the Common IntermediateFormat that encodes, hereinafter to be referred as: the encoder CIF form), CIF form image encoded resolution is the main flow resolution of present monitoring trade, its advantage is that memory space is lower, can transmit in common broadband network, price is also cheap relatively, as the monitoring memory image, picture quality is better relatively, is accepted by most of user; When shortcoming was the video image demonstration of conduct monitoring in real time, picture quality can not satisfy the requirement of high definition, and resolution is not enough.So generally when monitoring in real time, just resolution need be adjusted into the higher digital image format of definition.The standard of digital television system display format is divided into and is following 5 kinds of specification: D1～D5, and digital image format described in the utility model is the D1 form, but the code stream of D1 format video coding is bigger, and this just can increase the burden of memory device, stores again.
The utility model content
The purpose of this utility model provides a kind of control appliance of train video monitoring camera head, make the code stream that the control appliance of this train video monitoring camera head according to actual needs can controlled encoder between dual code stream, switch, to reach different application purposes.
In order to realize the purpose of this utility model, the control appliance of a kind of train video monitoring camera head of embodiment more of the present utility model comprises:
Be used to receive the video data receiving element of the video data of camera output;
Be used for coding unit to the coding video data that receives;
Be used to select the logic control element of video data encoding form, be connected with described video data receiving element with described coding unit.
In coding unit, also comprise: the vedio data encoder of standardized images form encoder and two kinds of forms of digital image format encoder.
By above technical scheme as can be known, the control appliance of the train video monitoring camera head that the utility model provides, employing is in video server, standardized images form encoder and digital image format encoder are housed, when multichannel is monitored in real time, can switch to the D1 form to the encoded video of one of them passage by the CIF form, perhaps two passages are alternately exported the encoded video of CIF form and D1 form respectively, and other passages of video server still keep original CIF coding, improve the utilization rate in hard-disc storage space, and monitored the definition of emergency picture in real time.
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the structural representation of the control appliance embodiment one of the utility model train video monitoring camera head;
Fig. 2 is the structural representation of the control appliance embodiment two of the utility model train video monitoring camera head;
Fig. 3 is the structural representation of the control appliance embodiment three of the utility model train video monitoring camera head.
Embodiment
An involved key concept of digital video and transfer voice is so-called " code stream " notion.Transmission over networks digital video and sound belong to the Streaming Media transmission category, and being commonly called as of the data flow that transmits in the channel is that code stream, code stream bandwidth are meant that then transport stream transmits the speed of data in channel, is unit with bps (bit/s) usually.Dual code stream, as its name suggests, in the control appliance of camera head simultaneously and deposit two kinds of code streams.Dual code stream is realized by adopting two kinds of forms to encode respectively at coding side, hardware system and the operation system of software that comprises chip has been proposed very high requirement.
And for the specific (special) requirements of video monitoring system for railway track, the utility model adopts the hardware encoding scheme, and two video signal transmission passages can automatically switch, and realizes that camera head exports CIF form and D1 form coded data simultaneously; Perhaps a video signal transmission passage can automatically switch, and the realization camera head is exported CIF form and D1 form coded data simultaneously.
As shown in Figure 1, the control appliance structural representation for the utility model embodiment one train video monitoring camera head comprises video data receiving element 1, is used to receive the video data of camera output; Coding unit 2 is used for the coding video data to receiving; Logic control element 3 is used for according to the control command that receives, selects the video data encoding form, is connected with video data receiving element 1 with coding unit 2.
Wherein coding unit 2 comprises CIF form encoder 21 and D1 form encoder 22, by control to a plurality of video data encoding forms, the encoded video of some passages can be switched to the D1 form by the CIF form, perhaps two passages are alternately exported the encoded video of CIF form and D1 form respectively, and other passages in the control appliance of camera head still keep original CIF coding.
The mode of mentioning above by switching automatically the coding control of two kinds of form encoders in the control appliance of this camera head has two kinds, a kind of is to switch on two transmission channels, another kind is to switch on same passage, introduces the switching mode of coded format below in detail.
As shown in Figure 2, control appliance structural representation for the utility model embodiment two train video monitoring camera heads, first output interface 4 is used for sending the data of the standardized images form behind the coding to video storage processing server A, is connected with standardized images form encoder 21; Second output interface 5 is used for sending the data of the digital image format behind the coding to terminal B, is connected with digital image format encoder 22.
Logic control element 3 comprises: the first instruction analysis module 31 is used for the control command that receives is judged that control command is sent by video storage processing server A or terminal B.If receive the instruction of beginning video monitoring, then send the instruction that startup D1 form encoder 22 is encoded to first switch module 32; Close the video monitoring instruction if receive, then send and close the instruction that D1 form encoder 22 is encoded to first switch module 32; First switch module 32 is used for according to the instruction that the first instruction analysis module 31 sends D1 form encoder being carried out switching manipulation.
32 of this first switch modules are responsible for the operating state of control D1 form encoder, and the CIF form that carries out on other passages coding is not controlled by it, can carry out CIF form coding always.Above-mentioned terminal can be the mobile communication terminal that adopts wireless connections, can think a notebook computer.
Above-mentioned technology has increased a passage of independently only exporting D1 form encoding stream, when opening, can realize that the video data of CIF form and the video data of D1 form export simultaneously, satisfies different demands.
As shown in Figure 3, control appliance structural representation for the utility model embodiment three train video monitoring camera heads, first output interface 4 is used for sending the data of the standardized images form behind the coding to video storage processing server A, is connected with standardized images form encoder 21; Second output interface 5 is used for sending the data of the digital image format behind the coding to terminal B, is connected with digital image format encoder 22.
Logic control element 3 comprises: the second instruction analysis module 33 is used for the control command that receives is judged that control command is sent by video storage processing server A or terminal B.If receive the video monitoring instruction, then send the instruction that starts D1 form encoder 22, closes CIF form encoder 21 to second switch module 34; If receive the video storage instruction, then send the instruction that starts CIF form encoder 21, closes D1 form encoder 22 to second switch module 34; Second switch module 34 is used for the instruction according to the second instruction analysis module 33, and CIF form encoder 21 and D1 form encoder 22 are carried out switching manipulation.
CIF form coding on a certain passage of these second switch module 34 responsible controls and the switching between the D1 form coding, if the instruction that receives is: start D1 form encoder 22, close the instruction of CIF form encoder 21, then the CIF form encoding stream that is transmitting on this passage can be switched to D1 form encoding stream; If the instruction that receives is: start CIF form encoder 21, close the instruction of D1 form encoder 22, then the D1 form encoding stream that is transmitting on this passage can be switched to CIF form encoding stream.The CIF form coding that carries out on other passages is also uncontrolled, can carry out CIF form coding always.Above-mentioned terminal can be the mobile communication terminal that adopts wireless connections, can think a notebook computer.
Can realize the switching of two kinds of coded formats of a transmission channel by above-mentioned technology, thereby realize the switching between the video data of the video data of CIF form and D1 form.
Terminal B can also adjust the bandwidth of the code stream of outputting encoded data continuously, when the multiple signals transmission channel of the control appliance of a plurality of camera heads is monitored, when the bandwidth that shows when certain road high definition picture is not enough, can guarantee to take place control point picture clear, smooth of emergency by the output bandwidth that reduces other road video datas.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (6)
1, a kind of control appliance of train video monitoring camera head is characterized in that: comprises,
Be used to receive the video data receiving element of the video data of camera output;
Be used for coding unit to the coding video data that receives;
Be used to select the logic control element of video data encoding form, be connected with described video data receiving element with described coding unit.
2, the control appliance of train video monitoring camera head according to claim 1 is characterized in that: described coding unit also comprises: standardized images form encoder and digital image format encoder.
3, the control appliance of train video monitoring camera head according to claim 2, it is characterized in that: also comprise first output interface that is used for the data of the standardized images form behind the coding are sent to the video storage processing server, be connected with described standardized images form encoder; Be used for the data of the digital image format behind the coding are sent to second output interface of terminal, be connected with described digital image format encoder;
Described logic control element specifically comprises:
Be used for the described control command that receives is judged,, then send the instruction that startup digital image format encoder is encoded to first switch module if receive the instruction of beginning video monitoring; Close video monitoring instruction if receive, then send the first instruction analysis module of closing the instruction that the digital image format encoder encodes to first switch module;
First switch module of switching manipulation is carried out in the instruction that is used for sending according to the first instruction analysis module to the digital image format encoder.
4, the control appliance of train video monitoring camera head according to claim 2, it is characterized in that: also comprise first output interface that is used for the data of the standardized images form behind the coding are sent to the video storage processing server, be connected with described standardized images form encoder; Be used for the data of the digital image format behind the coding are sent to second output interface of terminal, be connected with described digital image format encoder;
Described logic control element specifically comprises:
Be used for the described control command that receives is judged,, then send the instruction that starts the digital image format encoder, closes standardized images form encoder to the second switch module if receive the video monitoring instruction; If receive the video storage instruction, then send the second instruction analysis module that starts standardized images form encoder, closes the instruction of digital image format encoder to switch module;
Be used for standardized images form encoder and digital image format encoder being switched execution switching manipulation second switch module according to the instruction of the second instruction analysis module.
5, according to the control appliance of claim 3 or 4 described train video monitoring camera heads, it is characterized in that: the video storage processing server of described video storage processing server for being connected with standardized images form encoder by described first output interface.
6, according to the control appliance of claim 3 or 4 described train video monitoring camera heads, it is characterized in that: the portable terminal of described terminal for being connected with the digital image format encoder by second output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720173854 CN201118848Y (en) | 2007-10-29 | 2007-10-29 | Control device for train video monitoring camera device |
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| CN 200720173854 CN201118848Y (en) | 2007-10-29 | 2007-10-29 | Control device for train video monitoring camera device |
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| CN201118848Y true CN201118848Y (en) | 2008-09-17 |
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| CN 200720173854 Expired - Fee Related CN201118848Y (en) | 2007-10-29 | 2007-10-29 | Control device for train video monitoring camera device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625082A (en) * | 2012-02-29 | 2012-08-01 | 中山大学 | Video monitoring system |
| CN103248868A (en) * | 2012-10-09 | 2013-08-14 | 科腾科技(北京)有限公司 | Video monitoring system and method based on network file system |
| CN107454416A (en) * | 2017-09-12 | 2017-12-08 | 广州酷狗计算机科技有限公司 | Video flow sending method and device |
| WO2023109017A1 (en) * | 2021-12-15 | 2023-06-22 | 苏州浪潮智能科技有限公司 | Monitoring video compression method, monitoring system, computer device and medium |
-
2007
- 2007-10-29 CN CN 200720173854 patent/CN201118848Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625082A (en) * | 2012-02-29 | 2012-08-01 | 中山大学 | Video monitoring system |
| CN103248868A (en) * | 2012-10-09 | 2013-08-14 | 科腾科技(北京)有限公司 | Video monitoring system and method based on network file system |
| CN107454416A (en) * | 2017-09-12 | 2017-12-08 | 广州酷狗计算机科技有限公司 | Video flow sending method and device |
| CN107454416B (en) * | 2017-09-12 | 2020-06-30 | 广州酷狗计算机科技有限公司 | Video stream sending method and device |
| WO2023109017A1 (en) * | 2021-12-15 | 2023-06-22 | 苏州浪潮智能科技有限公司 | Monitoring video compression method, monitoring system, computer device and medium |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20131029 |