CN107948614A - A kind of video signal transmission system and method - Google Patents
A kind of video signal transmission system and method Download PDFInfo
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- CN107948614A CN107948614A CN201711488153.5A CN201711488153A CN107948614A CN 107948614 A CN107948614 A CN 107948614A CN 201711488153 A CN201711488153 A CN 201711488153A CN 107948614 A CN107948614 A CN 107948614A
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000033228 biological regulation Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 11
- 238000007906 compression Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 9
- 210000002683 foot Anatomy 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000013144 data compression Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The present invention relates to a kind of video signal transmission system and method, the system includes interface unit, power supply unit, voltage conversion unit, main control chip U2, communication unit and storage unit, H.264 coding module and image processing module are equipped with main control chip U2, interface unit, for obtaining vision signal；Main control chip U2, for carrying out coded treatment to vision signal using H.264 coding module, is compressed the video after coding using image processing module, forms output signal；Storage unit, signal is exported for storing；Communication unit, for that will export signal transmission to terminal, is shown by terminal；Power supply unit, for providing power supply, voltage conversion unit, for supply voltage to be changed, to power to interface unit, main control chip U2, communication unit and storage unit.The present invention realizes the high quality for not only having kept video, but also saves download time and the data flow charging of user.
Description
Technical field
The present invention relates to video signal transmission system, more specifically refers to a kind of video signal transmission system and method.
Background technology
With the development of science and technology, people constantly lift the video invitation that vehicle-mounted camera is shot, video high definition resolution ratio
Vehicular camera occur therewith, still, it is this keep video high definition resolution ratio camera acquired in video, in client
When end is downloaded, due to the limitation of bandwidth, easily there is the problem of download time length of user and high data flow charging.
Therefore, it is necessary to design a kind of video signal transmission system, the high quality for not only having kept video is realized, but also save user
Download time and data flow charging.
The content of the invention
The defects of it is an object of the invention to overcome the prior art, there is provided a kind of video signal transmission system and method.
To achieve the above object, the present invention uses following technical scheme：A kind of video signal transmission system, including interface list
Member, power supply unit, voltage conversion unit, main control chip U2, communication unit and storage unit, are equipped with main control chip U2
H.264 coding module and image processing module, wherein, the interface unit, for obtaining vision signal；The main control chip
U2, for carrying out coded treatment to vision signal using H.264 coding module, using image processing module to the video after coding
It is compressed, forms output signal；The storage unit, signal is exported for storing；The communication unit, for output to be believed
Number terminal is transmitted to, is shown by terminal；The power supply unit, for providing power supply, the voltage conversion unit, for by power supply
Voltage is changed, to power to interface unit, main control chip U2, communication unit and storage unit.
Its further technical solution is：The model SN9C291B/LGA54 of the main control chip U2.
Its further technical solution is：The storage unit includes storage chip U3, the model of the storage chip U3
MX25L1006E。
Its further technical solution is：The communication unit includes PA chips, the model ZX234510 of the PA chips.
Its further technical solution is：The interface unit includes interface CON1, the model of the interface CON1
GC1024。
Its further technical solution is：The power supply unit includes external power supply and USB interface, and external power supply provides 5V
Voltage, inputs by USB interface.
Its further technical solution is：The voltage conversion unit include the first power supply chip U6, second source chip U7,
3rd power supply chip U8 and the 4th power supply chip U9, the first power supply chip U6, second source chip U7, the 3rd power supply core
Piece U8 and the 4th power supply chip U9 are connected with USB interface respectively.
Its further technical solution is：The model ACE50533BN of the first power supply chip U6, second source chip
Model ACE51525BN, the model ACE721CBN of the 3rd power supply chip U8 of U7, the model of the 4th power supply chip U9
ACE50733AM。
Its further technical solution is：Filter capacitor C24 is connected between the first power supply chip U6 and USB interface
And the output end feet of voltage regulation resistance R13, the first power supply chip U6 are connected with voltage voltage regulation filtering chip U4；The voltage
The model ACE50715BM of voltage regulation filtering chip U4.
Present invention also offers a kind of video-signal transmission method, the described method includes：
Interface unit obtains vision signal；
Coded treatment is carried out to vision signal using H.264 coding module；
The video after coding is compressed using image processing module, forms output signal；
Storage unit storage output signal；
Communication unit will export signal transmission to terminal, be shown by terminal.
Compared with the prior art, the invention has the advantages that：A kind of video signal transmission system of the present invention, by obtaining
Pick up the car and carry the vision signal of preceding camera and rear camera, coded treatment is carried out to vision signal using H.264 coding module,
The video after coding is compressed using image processing module, output signal is formed, is stored and transmitted, realization was both kept
The high quality of video, and save download time and the data flow charging of user.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for video signal transmission system that the specific embodiment of the invention provides；
Fig. 2 is the circuit diagram for the main control chip U2 that the specific embodiment of the invention provides；
Fig. 3 is the circuit diagram for the storage unit that the specific embodiment of the invention provides；
Fig. 4 is the circuit diagram for the interface unit that the specific embodiment of the invention provides；
Fig. 5 is the circuit diagram for the power supply unit that the specific embodiment of the invention provides；
Fig. 6 is the circuit diagram for the first power supply chip U6 that the specific embodiment of the invention provides；
Fig. 7 is the circuit diagram for the second source chip U7 that the specific embodiment of the invention provides；
Fig. 8 is the circuit diagram for the 3rd power supply chip U8 that the specific embodiment of the invention provides；
Fig. 9 is the circuit diagram for the 4th power supply chip U9 that the specific embodiment of the invention provides；
Figure 10 is the circuit diagram for the voltage voltage regulation filtering chip U4 that the specific embodiment of the invention provides；
Figure 11 is the circuit diagram for the shunt capacitance that the specific embodiment of the invention provides；
Figure 12 is a kind of flow chart for video-signal transmission method that the specific embodiment of the invention provides.
Embodiment
In order to more fully understand the present invention technology contents, with reference to specific embodiment to technical scheme into
One step introduction and explanation, but not limited to this.
A kind of specific embodiment as shown in Fig. 1~12, video signal transmission system provided in this embodiment, can use
In automotive camera system, the high quality for not only having kept video is realized, but also save download time and the data flow charging of user.
As shown in Figure 1, present embodiments providing a kind of video signal transmission system, it includes interface unit 1, power supply unit
2nd, H.264 voltage conversion unit 3, main control chip U2, communication unit 4 and storage unit 5, interior are equipped with of main control chip U2 encode mould
Block and image processing module, wherein, interface unit 1, for obtaining vision signal；H.264, main control chip U2, is compiled for using
Code module carries out coded treatment to vision signal, and the video after coding is compressed using image processing module, forms output
Signal；The storage unit 5, signal is exported for storing；Communication unit 4, for signal transmission will to be exported to terminal, by terminal
Display；The power supply unit 2, for providing power supply, voltage conversion unit 3, for supply voltage to be changed, with to interface
Unit 1, main control chip U2, communication unit 4 and storage unit 5 are powered.
H.264 coding module is specifically by video signal compression is H.264 coded format for this, and H.264 coded format is
Newest form defined in MPEG-4 standards, represents one of video code model of state-of-the-art, and some is also referred to as AVC,
H.264 maximum advantage is that have very high data compression ratio, under conditions of equal picture quality, compression ratio H.264
It is more than 2 times of MPEG-2, is 1.5~2 times of MPEG-4.Compared with the compress techniques such as MPEG-2 and MPEG-4ASP, H.264
Compress technique will greatly save download time and the data flow charging of user.H.264 also gathered around while with high compression ratio
There is the image of high quality smoothness, it is Just because of this, required in network transmission process by the video data H.264 compressed
Bandwidth it is less, decrease cost.
High definition camera lens gathers image, and image is compressed by main control chip and changes into digital signal, by communication unit
Member 4 is transmitted, and does not reduce picture quality, ensures that data volume is few and quality is high.
In the present embodiment, the model SN9C291B/LGA54 of main control chip U2；In other embodiment, above-mentioned master control
The model of chip U2 can also be other high definitions USB camera chips such as SN9C292B.
The input end feet of above-mentioned main control chip U2 is connected with clock unit, which includes oscillator Y1 and electricity
Hold C3, C5；Clock pulses is provided for main control chip U2.
The reset end feet of above-mentioned main control chip U2 is connected with resistance R4.
Further, storage unit 5 includes storage chip U3, and the model MX25L1006E of storage chip U3, this is deposited
It is the Flash memory chip with read-write capability to store up chip U3, for preserving video in real time, is transferred at any time easy to user.
In addition, transmission and downloading process for video, above-mentioned communication unit 4 includes PA chips, the PA chips
Model ZX234510.ZX234510 is a series of terminal power amplifier chips, and product covers the frequency range and communication pattern of mainstream comprehensively.
PA chips are terminal power amplifier chips, have the characteristics that high efficiency, high-output power and high-gain three are big, are mainly used for 3G/4G intelligence
Mobile phone products, are the most important cores in addition to base band and transceiving chip, with low-power consumption, high integration, surpass
Low BOM costs, it is well packaged, it disclosure satisfy that various wireless communication markets, in the present embodiment, utilization is model
The terminal power amplifier chips of ZX234510-1 are as PA chips；Certainly, in other embodiment, model can also be used
The terminal such as ZX234510-2, ZX234510-3, ZX234510-4 power amplifier chips are as PA chips.
In addition, above-mentioned interface unit 1 includes interface CON1, the model GC1024 of interface CON1.Camera and interface
The input terminal connection of CON1, and voltage regulation resistance R1, R2, R3 are additionally provided between camera and interface CON1, obtained with playing for video
Voltage regulation result when taking.
In addition, in certain embodiments, above-mentioned voltage conversion unit 3 includes the first power supply chip U6, second source core
Piece U7, the 3rd power supply chip U8 and the 4th power supply chip U9, the first power supply chip U6, second source chip U7, the 3rd power supply
Chip U8 and the 4th power supply chip U9 are connected with USB interface respectively.
And first power supply chip U6 model ACE50533BN, the model ACE51525BN of second source chip U7,
The model ACE721CBN of 3rd power supply chip U8, the model ACE50733AM of the 4th power supply chip U9.Certainly, in other
Embodiment, an above-mentioned power supply chip U6, second source chip U7, the type of the 3rd power supply chip U8 and the 4th power supply chip U9
Number can be other ACE power supply models.The conversion of supply voltage is carried out by multiple power supply chips, formation meets disparate modules
Supply voltage requirement.
In addition, it is connected with filter capacitor C24 and voltage regulation resistance between the first above-mentioned power supply chip U6 and USB interface
The output end feet of R13, the first power supply chip U6 are connected with voltage voltage regulation filtering chip U4；Voltage voltage regulation filtering chip U4's
Model ACE50715BM.The voltage exported using voltage voltage regulation filtering chip U4 to the first power supply chip U6 carries out voltage stabilizing filter
Ripple.
In addition, the output end feet of first power supply chip U6 is also associated with camera and interface CON1, be camera with
And interface CON1 power supplies.
Inductance coil L1 is connected between the SW end feets and FB end feets of 3rd power supply chip U8.
The voltage of above-mentioned second source chip U7 outputs is powered for main control chip U2；The electricity of 3rd power supply chip U8 outputs
Press and power for main control chip U2；The voltage of 4th power supply chip U9 outputs is powered for storage unit 5.
In addition, the output terminal of above-mentioned second source chip U7 is connected with filter capacitor C17, C18；The 3rd above-mentioned power supply
The output terminal of chip U8 is connected with filter capacitor C19, C20；The output terminal of the 4th above-mentioned power supply chip U9 is connected with filtered electrical
Hold C16.
Above-mentioned vision signal is to be shot by vehicle-mounted preceding camera 6 and rear camera 7 and obtained, and preceding camera 6 can be with
Level tune, rear camera 7 have 720 degree of spinfunctions, can adjust image in the main collecting vehicle in direction.
A kind of above-mentioned video signal transmission system, is believed by the video for obtaining vehicle-mounted preceding camera 6 and rear camera 7
Number, coded treatment is carried out to vision signal using H.264 coding module, the video after coding is carried out using image processing module
Compression, forms output signal, is stored and transmitted, and realizes the high quality for not only having kept video, but also save the download time of user
With data flow charging.
As shown in figure 12, the present embodiment additionally provides a kind of video-signal transmission method, and this method includes：
S1, interface unit 1 obtain vision signal；
S2, using H.264 coding module to vision signal carry out coded treatment；
S3, using image processing module be compressed the video after coding, forms output signal；
S4, the storage output signal of storage unit 5；
S5, communication unit 4 will export signal transmission to terminal, be shown by terminal.
For above-mentioned S1 steps, above-mentioned vision signal be shot by vehicle-mounted preceding camera 6 and rear camera 7 and
, preceding camera 6 can have 720 degree of spinfunctions, can adjust in the main collecting vehicle in direction with Level tune, rear camera 7
Image.
For above-mentioned S2 steps, H.264 coding module is specifically by video signal compression is H.264 coded format for this,
H.264 coded format is newest form defined in MPEG-4 standards, represents one of video code model of state-of-the-art,
Some is also referred to as AVC, and H.264 maximum advantage is that have very high data compression ratio, under conditions of equal picture quality,
H.264 compression ratio is more than 2 times of MPEG-2, is 1.5~2 times of MPEG-4.With the compression skill such as MPEG-2 and MPEG-4ASP
Art is compared, and H.264 compress technique will greatly save download time and the data flow charging of user.H.264 with high compression
Than while also possess the image of high quality smoothness, Just because of this, by the video data H.264 compressed, in network transmission
During required bandwidth it is less, decrease cost.
For above-mentioned S3 steps, high definition camera lens collection image, is compressed image by main control chip and changes into number
Word signal, is transmitted by communication unit 4, does not reduce picture quality, ensures that data volume is few and quality is high.
A kind of above-mentioned video-signal transmission method, is believed by the video for obtaining vehicle-mounted preceding camera 6 and rear camera 7
Number, coded treatment is carried out to vision signal using H.264 coding module, the video after coding is carried out using image processing module
Compression, forms output signal, is stored and transmitted, and realizes the high quality for not only having kept video, but also save the download time of user
With data flow charging.
The above-mentioned technology contents that the present invention is only further illustrated with embodiment, in order to which reader is easier to understand, but not
Represent embodiments of the present invention and be only limitted to this, any technology done according to the present invention extends or recreation, by the present invention's
Protection.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of video signal transmission system, it is characterised in that including interface unit, power supply unit, voltage conversion unit, master control
Chip U2, communication unit and storage unit, main control chip U2 is interior to be equipped with H.264 coding module and image processing module, its
In, the interface unit, for obtaining vision signal；The main control chip U2, for being believed using H.264 coding module video
Number carry out coded treatment, the video after coding is compressed using image processing module, formed output signal；The storage is single
Member, signal is exported for storing；The communication unit, for that will export signal transmission to terminal, is shown by terminal；The power supply
Unit, for providing power supply, the voltage conversion unit, for supply voltage to be changed, with to interface unit, master control core
Piece U2, communication unit and storage unit power supply.
A kind of 2. video signal transmission system according to claim 1, it is characterised in that the model of the main control chip U2
For SN9C291B/LGA54.
3. a kind of video signal transmission system according to claim 1, it is characterised in that the storage unit includes storage
Chip U3, the model MX25L1006E of the storage chip U3.
4. a kind of video signal transmission system according to claim 1, it is characterised in that the communication unit includes PA cores
Piece, the model ZX234510 of the PA chips.
5. a kind of video signal transmission system according to claim 1, it is characterised in that the interface unit includes interface
CON1, the model GC1024 of the interface CON1.
A kind of 6. video signal transmission system according to any one of claims 1 to 5, it is characterised in that the power supply list
Member includes external power supply and USB interface, and external power supply provides 5V voltages, inputted by USB interface.
7. a kind of video signal transmission system according to claim 6, it is characterised in that the voltage conversion unit includes
First power supply chip U6, second source chip U7, the 3rd power supply chip U8 and the 4th power supply chip U9, the first power supply core
Piece U6, second source chip U7, the 3rd power supply chip U8 and the 4th power supply chip U9 are connected with USB interface respectively.
8. a kind of video signal transmission system according to claim 7, it is characterised in that the first power supply chip U6's
Model ACE50533BN, the model ACE51525BN of second source chip U7, the model of the 3rd power supply chip U8
ACE721CBN, the model ACE50733AM of the 4th power supply chip U9.
A kind of 9. video signal transmission system according to claim 8, it is characterised in that the first power supply chip U6 with
And the output end feet company of filter capacitor C24 and voltage regulation resistance R13, the first power supply chip U6 are connected between USB interface
It is connected to voltage voltage regulation filtering chip U4；The model ACE50715BM of the voltage voltage regulation filtering chip U4.
A kind of 10. video-signal transmission method, it is characterised in that the described method includes：
Interface unit obtains vision signal；
Coded treatment is carried out to vision signal using H.264 coding module；
The video after coding is compressed using image processing module, forms output signal；
Storage unit storage output signal；
Communication unit will export signal transmission to terminal, be shown by terminal.
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| CN201711488153.5A CN107948614A (en) | 2017-12-29 | 2017-12-29 | A kind of video signal transmission system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711488153.5A CN107948614A (en) | 2017-12-29 | 2017-12-29 | A kind of video signal transmission system and method |
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ID=61937151
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108682208A (en) * | 2018-06-29 | 2018-10-19 | 深圳市乾乾编程科技有限公司 | Intelligent teaching building block device and operating method |
| CN111371015A (en) * | 2020-04-14 | 2020-07-03 | 广州海睿信息科技有限公司 | Intelligent electric control cabinet |
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| CN102685427A (en) * | 2011-03-10 | 2012-09-19 | 郑州大学 | Embedded digital video mobile storage controller and video monitoring storage system |
| CN102438106A (en) * | 2011-12-21 | 2012-05-02 | 成都众询科技有限公司 | Video acquisition system |
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