CN109729359A - High-definition digital video encoder - Google Patents
High-definition digital video encoder Download PDFInfo
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- CN109729359A CN109729359A CN201711048352.4A CN201711048352A CN109729359A CN 109729359 A CN109729359 A CN 109729359A CN 201711048352 A CN201711048352 A CN 201711048352A CN 109729359 A CN109729359 A CN 109729359A
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 239000011889 copper foil Substances 0.000 claims description 16
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
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Abstract
The present invention discloses a kind of high-definition digital video encoder, including video acquisition module, audio collection module, main control module, power supply module, Flash module, memory modules, LAN module and the battery pack being installed on circuit board；The input terminal of the video acquisition module is connected to a video input interface, the input terminal of the audio collection module is connected to an audio input interface, the Flash module, memory modules, the respective input terminal of LAN module are bi-directionally connected with main control module, the output end of the power supply module is connected to main control module, and the battery pack is connect with power supply module；The power supply module includes power management chip, triode, amplifier unit, power switch button, coad connector and USB charging port.Again it is load supplying while charging the battery the present invention is based on the external power supply of the charging module of battery, improves the utilization efficiency of electric energy, realize the simplification of structure and the reduction of cost.
Description
Technical field
The present invention relates to video encoding technique field, in particular to a kind of high-definition digital video encoder.
Background technique
High-definition digital video encoder, refer to one can be to the equipment that digital video is compressed.Usual this compression
Belong to and damages data compression.In history, vision signal is to be stored on tape in an analogue form.With Compact Disc's
There is and enters market, audio signal is stored with digital form, and vision signal also begins to use digitized format, some
The relevant technologies also start to grow up therewith.H.264, while being also MPEG-4 Part X, be by ITU-T Video Coding Experts
Joint video team (JVT, the Joint Video that group (VCEG) and ISO/IEC dynamic image expert group (MPEG) constitute jointly
Team) the high compression digital video coding-coding device standard proposed.This product is provided best using H.264 high definition coding techniques
HD video quality；System uses embedded system, can be from the intrusion of virus；It can be used for multimedia recording and broadcasting system, high definition
Video transmission system, high-definition video monitoring etc..It can be widely used in communication, network, be also suitble to real time system control, industry certainly
Dynamicization, real-time data acquisition, military system etc. need the moulds such as high-speed computation, intelligent transportation, aerospace, medical instrument, water conservancy
Block and high-reliability, the application field that can be used for a long time.
Summary of the invention
It is an object of the present invention to provide a kind of high-definition digital video encoder, the high-definition digital video encoder is battery-based
The external power supply of charging module is load supplying while charging the battery again, improves the utilization efficiency of electric energy, is realized
The simplification of structure and the reduction of cost, effectively reduce volume, reduce costs.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of high-definition digital video encoder, including installation
In on circuit board video acquisition module, audio collection module, main control module, power supply module, Flash module, memory modules,
LAN module and battery pack；
The input terminal of the video acquisition module is connected to a video input interface, the input terminal connection of the audio collection module
To an audio input interface, the respective output end of the video acquisition module, audio collection module is all connected to main control module, institute
Flash module, memory modules, the respective input terminal of LAN module is stated to be bi-directionally connected with main control module, the power supply module it is defeated
Outlet is connected to main control module, and the battery pack is connect with power supply module；
The circuit board further comprises metal substrate, upper copper foil layer and lower copper foil layer, the metal substrate and upper copper foil layer it
Between have the first epoxy glue adhesion coating, between the metal substrate and lower copper foil layer have the second epoxy glue adhesion coating, be located at the gold
Belong in the middle part of substrate and along its in-plane be provided with several horizontal through hole, several this horizontal through hole are parallel and arranged at equal intervals；
The power supply module include power management chip, triode, amplifier unit, power switch button, coad connector and
USB charging port, the collector and emitter of the triode is connected respectively to the battery pack and USB charging port, described
The base stage of triode is connected to the charge control foot of power management chip；For controlling the power switch button of on/off
It is connected to power management chip, the USB charging port is connected to triode and power management chip, the power management chip
Voltage output foot be connected to amplifier unit, the battery pack is connected to the electricity feedback foot of power management chip.
Further improved technical solution is as follows in above-mentioned technical proposal:
1, in above scheme, a switch indication light, which contacts with the power switch button and is located at 2 of power management chip, to be drawn
Between foot.
2, in above scheme, the switch indication light is LED light.
3, the capacitor that be provided with 2 in above scheme, between the input terminal and ground connection of the USB charging port in parallel.
4, in above scheme, the main control module model Hi3516RFCV100 chip.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art:
1, high-definition digital video encoder of the present invention, what the external power supply of battery-based charging module charged the battery
It is again simultaneously load supplying, improves the utilization efficiency of electric energy, realize the simplification of structure and the reduction of cost, effectively reduce
Volume reduces costs；Secondly, being located in the middle part of the metal substrate in its circuit board and being provided with several water along its in-plane
Flat through-hole, several this horizontal through hole are parallel and arranged at equal intervals, are conducive to increase heat dissipation area, are conducive to that copper foil layer will be come from
The heat of device quickly transmits, to be conducive to improve the service life of device, the reliability of product is improved, secondly, several
A horizontal through hole is towards the fan being located on PCB, and the air-flow be conducive in metal substrate quickly flows, thus by more heats
It takes out of.
2, high-definition digital video encoder of the present invention supports 1 tunnel high definition HDMI audio-video, the clear AV video of 1 road sign, 1 tunnel
3.5MM independent audio interface acquires function, and coding exports dual code stream H.264 format, audio MP3/AAC format.Encoder bit rate can
It adjusts, image quality is controllable, supports the transmission of the agreements such as HTTP/RTSP/RTP/RTMP/UDP, easy to use, there is no hardware is simultaneous
Capacitive problem.
Detailed description of the invention
Attached drawing 1 is the schematic illustration of high-definition digital video encoder of the present invention；
Attached drawing 2 is power supply module circuit diagram in high-definition digital video encoder of the present invention；
Attached drawing 3 is board structure of circuit schematic diagrames in high-definition digital video encoder of the present invention；
Attached drawing 4 is the A-A the schematic diagram of the section structure of attached drawing 3.
In the figures above: 1, power supply module；2, battery pack；3, video acquisition module；4, audio collection module；5, master control mould
Block；6, Flash module；7, memory modules；8, video input interface；9, audio input interface；11, power management chip；12, three
Pole pipe；13, amplifier unit；14, power switch button；15, coad connector；16, USB charging port；17, capacitor；18, it opens
Close indicator light；19, LAN module；21, metal substrate；22, upper copper foil layer；23, the first epoxy glue adhesion coating；24, horizontal through hole；25,
Lower copper foil layer；26, the second epoxy glue adhesion coating.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment: a kind of high-definition digital video encoder, including be installed on circuit board video acquisition module 3, audio collection
Module 4, main control module 5, power supply module 1, Flash module 6, memory modules 7, LAN module 19 and battery pack 2；
The input terminal of the video acquisition module 3 is connected to a video input interface 8, the input terminal of the audio collection module 4
It is connected to an audio input interface 9, the video acquisition module 3, the respective output end of audio collection module 4 are all connected to master control
Module 5, the Flash module 6, memory modules 7, the respective input terminal of LAN module 19 are bi-directionally connected with main control module 5, institute
The output end for stating power supply module 1 is connected to main control module 5, and the battery pack 2 is connect with power supply module 1；
The circuit board further comprises metal substrate 21, upper copper foil layer 22 and lower copper foil layer 25, the metal substrate 21 and upper
There is the first epoxy glue adhesion coating 23 between copper foil layer 22, there is the second epoxy glue between the metal substrate 21 and lower copper foil layer 25
Adhesion coating 26 positioned at 21 middle part of metal substrate and is provided with several horizontal through hole 24 along its in-plane, several this levels
Through-hole 24 is parallel and arranged at equal intervals；
The power supply module 1 includes power management chip 11, triode 12, amplifier unit 13, power switch button 14, load
Connector 15 and USB charging port 16, the collector and emitter of the triode 12 are connected respectively to 2 He of battery pack
The base stage of USB charging port 16, the triode 12 is connected to the charge control foot of power management chip 11；For controlling power supply
The power switch button 14 of on-off is connected to power management chip 11, and the USB charging port 16 is connected to triode 12
With power management chip 11, the voltage output foot of the power management chip 11 is connected to amplifier unit 13, the battery pack 2
It is connected to the electricity feedback foot of power management chip 11.
One switch indication light 18 contact with the power switch button 14 and be located at power management chip 11 2 pins it
Between.
Above-mentioned switch indication light 18 is LED light.
2 capacitors 17 in parallel are provided between the input terminal and ground connection of above-mentioned USB charging port 16.
Above-mentioned 5 model Hi3516RFCV100 chip of main control module.
Above-mentioned technology contents specific explanations are as follows:
(1), video acquisition module: chip: 5150AM1 primary liability acquire in all kinds of head end video signals input main control modules into
Row coding.Illustrate: the effect of this module is analog video to be converted into digital video, and generation meets coding chip interface standard
Digital video signal.Using the low-power-consumption video A/D conversion chip of certain company.Support 3 kinds of lattice of NTSC/PAL/SECAM
Formula can export two kinds of signals of ITU-R BT.656 and ITU-R BT.601, it is contemplated that the standard of coding chip, this system use
ITU-RBT.656 format 8 is data serial transmission.The AIPIA of the chip is input end of analog signal, receives the simulation of camera
Vision signal input.Horizontal synchronizing pulse and field system chronizing impulse respectively correspond HSYNC and VSYNC, are separately connected coding chip
HSYNIN and VSYNIN2 pin realize the row synchronization and field synchronization operation of image.YOUT [7:0] is data output pins, will
Digital video signal is sent to the data receiver of coding chip.SCL and SDA is respectively that the serial clock of I2C interface and data are drawn
Foot, micro-chip processor to the access for the internal register for changing chip are realized by I2C bus.
(2), audio collection module: ES7240, which is in debt, to be encoded in audio signal reception and incoming main control module.It says
Bright: the effect of this module is analog video to be converted into digital audio, generates the digital audio for meeting coding chip interface standard
Signal.We are frequently necessary to that continuously varying analog signal is converted into digital letter by three sampling, quantization, coding steps
Number.Sampling is exactly in time by analog signal discretization.Quantization is the width with the approximate original consecutive variations of limited range value
Angle value becomes the continuous amplitude of analog signal the discrete value for having certain intervals of limited quantity.Coding is exactly by certain rule
Rule indicates the value after quantization with binary digit, is then converted into the digital signal of two-value or multivalue.The purpose of voice coding
Under the premise of being to maintain certain algorithm complexity and communication delay, message capacity as few as possible is occupied, is transmitted as high as possible
The voice of quality.It can be divided into waveform coding, parameter coding and hybrid coding three categories.
(3), H.264 main control module: Hi3516RFCV100 primary liability encodes front end audio-video signal, and turns
For all kinds of agreements, such as: HTTP RTSP RTMP UDP ONVIF.Illustrate: H.264 encoder is the base of modern video product
Plinth and core, H.264 encoder is in very professional research field, to most of use for using computer network transmission video signal
For family, H.264 encoder generally will put into research and development from chip level for research and development, and the development time is long, slow effect, and risk is big.
Usually under control of the microprocessor, the data of Yao Jinhang compressed encoding are inputted through FIFO mouthfuls.Decompression is the inverse process of compression.This
In system, the data of the data receiver received end YOUT output, while HSYNIN and VSYNIN signal respectively with HSYN and
VSYN is connected, and realizes the row synchronization and field synchronization operation of image.It receives the data come and is sent to compressed encoding processing unit, compression is compiled
It is sent in the SDRAM of chip exterior and stores after code, the access to external SDRAM may be implemented by the sdram controller in piece,
And communicated by HPI with microprocessor, so as to the real time monitoring of remote monitoring end.
(4), memory modules: H5TQ1G63EFR-PBC primary liability deposits coding application program, guarantees normal fortune
Row.Illustrate: it is this for Video coding need to handle the program of mass data for, it is necessary to reasonable arrangement data and program are deposited
Storage mode realizes the optimization to memory.Experiment shows rationally to utilize two-level cache and cooperates low working frequency external storage
Device, the efficiency of system can reach all using the 80%~90% of high working frequency internal storage.Larger space will be occupied
Data or the not high program of frequency of use are placed in chip external memory, and according to the structure of H.264 algorithm itself, will be called repeatedly
Program segment (such as dct transform and idct transform) be placed in piece internal program memory block, frequently use data segment (as encode
Table) it is placed in piece in data storage, being placed in chip external memory with the less program of number and data segment, avoid to journey
Sequence or data unnecessary move repeatedly.In H.264 encoder operational process, due to a frame image data volume very
Greatly, therefore by reference frame and current frame data it is put into chip external memory, needs to use then, then they are removed from external memory
Into on-chip memory, to improve the operational efficiency of program.
(5), Flash module: MX25L12835F primary liability stores encoder system software, upon power-up this module
On software program is injected after encoder start to work.Illustrate: encoder is by the analog video signal from camera
The digital video signal of YUV format is converted into through AD conversion chip, then by H.264 Protocol compression at the picture number of a variety of rates
According to code stream, responsible protocol processes (2) are then passed to by PCI bus, video compression data is last after encapsulating herein
It is transmitted to the Ethernet interface unit that ethernet controller RTL8139C (L) is core by PCI bus, IP is sent to by it
Online peripheral expansion module controls camera and transmitting-receiving transparent data using single-chip microcontroller as core, by two serial ports respectively
CPLD mainly completes the compiled connection of application program of the functions such as address decoding, PCI bus arbitration exploitation, and FLASH is written
The program in FLASH is moved in SDRAM by the bootstrap routine in EEPROM after middle encoder electrification reset, system
It brings into operation.
(6), LAN module: the audio-video signal after coding is passed in network by RTL8211EG primary liability, so that its
Its equipment can be docked with encoder.Illustrate: this module is to realize that video data network passes using building embedded ethernet
Defeated access.Network transmission module is the fast Ethernet controller that certain company releases.MAC and PHY is integrated on chip, is met
IEEE802.3/802.U-100Base-Tx/10Base-T specification.Microprocessor passes through address, data, control line and piece choosing letter
Number line is communicated and is controlled to network transmission module.Network transmission hardware catenation principle figure is as shown in Figure 3.Microprocessor is sent
When data, it is effective that transmission enable signal ETXEN is set first.Data sending terminal ETX [1:0] and network transmission module TXD [1:
0] pin is connected.Video data is sent with the clock signal EXTCK of microprocessor.The receiving end ERX [1:0] and network of data
RXD [1:0] pin of transmission module is connected, and receives video data.EMDI0 and EMDC controls the read-write of chip respectively.Data
It is sent from DMA channel.When sending data, transmission control register and transmission transmission address register are set first, from finger
Fixed memory block access evidence, and the byte number sent is recorded, after data have been sent, network transmission module, which generates, interrupts letter
Number, request DMA is interrupted, by microprocessor processes.
When using above-mentioned high-definition digital video encoder, the external power supply of battery-based charging module is to battery
Again it is load supplying while charging, improves the utilization efficiency of electric energy, realizes the simplification of structure and the reduction of cost, effectively
It reduces volume, reduce costs；Secondly, it is conducive to increase heat dissipation area, being conducive to will be from the heat of copper foil layer device
Quickly transmitting improves the reliability of product, secondly, several horizontal through hole to be conducive to improve the service life of device
Towards the fan being located on PCB, the air-flow be conducive in metal substrate quickly flows, so that more heats be taken out of；Again,
It supports 1 tunnel high definition HDMI audio-video, the clear AV video of 1 road sign, and 1 road 3.5MM independent audio interface acquires function, and coding output is double
Code stream H.264 format, audio MP3/AAC format.Encoder bit rate is adjustable, and image quality is controllable, supports HTTP/RTSP/RTP/
The transmission of the agreements such as RTMP/UDP, it is easy to use, hardware compatibility issue is not present.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of high-definition digital video encoder, it is characterised in that: including be installed on circuit board video acquisition module (3),
Audio collection module (4), main control module (5), power supply module (1), Flash module (6), memory modules (7), LAN module (19)
With battery pack (2)；
The input terminal of the video acquisition module (3) is connected to a video input interface (8), the audio collection module (4)
Input terminal is connected to an audio input interface (9), the video acquisition module (3), audio collection module (4) respective output end
Be all connected to main control module (5), the Flash module (6), memory modules (7), LAN module (19) respective input terminal with
Main control module (5) is bi-directionally connected, and the output end of the power supply module (1) is connected to main control module (5), the battery pack (2) with
Power supply module (1) connection；
The circuit board further comprises metal substrate (21), upper copper foil layer (22) and lower copper foil layer (25), the metal substrate
(21) there is the first epoxy glue adhesion coating (23) between upper copper foil layer (22), the metal substrate (21) and lower copper foil layer (25) it
Between have the second epoxy glue adhesion coating (26), be located at the metal substrate (21) in the middle part of and along its in-plane be provided with several level
Through-hole (24), several this horizontal through hole (24) are parallel and arranged at equal intervals；
The power supply module (1) includes that power management chip (11), triode (12), amplifier unit (13), power switch are pressed
The collector and emitter of key (14), coad connector (15) and USB charging port (16), the triode (12) is separately connected
Base stage to the battery pack (2) and USB charging port (16), the triode (12) is connected to power management chip (11)
Charge control foot；The power switch button (14) for controlling on/off is connected to power management chip (11), described
USB charging port (16) is connected to triode (12) and power management chip (11), the voltage of the power management chip (11)
Output pin is connected to amplifier unit (13), and the battery pack (2) is connected to the electricity feedback foot of power management chip (11).
2. high-definition digital video encoder according to claim 1, it is characterised in that: a switch indication light (18) with it is described
Power switch button (14) is contacted and is located between 2 pins of power management chip (11).
3. high-definition digital video encoder according to claim 2, it is characterised in that: the switch indication light (18) is
LED light.
4. high-definition digital video encoder according to claim 1, it is characterised in that: main control module (5) model
Hi3516RFCV100 chip.
5. high-definition digital video encoder according to claim 1, it is characterised in that: the USB charging port (16)
The capacitor (17) that be provided with 2 in parallel between input terminal and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048352.4A CN109729359A (en) | 2017-10-31 | 2017-10-31 | High-definition digital video encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048352.4A CN109729359A (en) | 2017-10-31 | 2017-10-31 | High-definition digital video encoder |
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| Publication Number | Publication Date |
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| CN109729359A true CN109729359A (en) | 2019-05-07 |
Family
ID=66294060
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711048352.4A Pending CN109729359A (en) | 2017-10-31 | 2017-10-31 | High-definition digital video encoder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114401403A (en) * | 2021-12-30 | 2022-04-26 | 爱克斯维智能科技(苏州)有限公司 | Video wireless transmission image coding method, system and device for remote control excavator |
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| JP2006173612A (en) * | 2004-12-13 | 2006-06-29 | Shobin Kigyo Kofun Yugenkoshi | Substrate having high thermal conductivity and process for manufacturing it |
| CN201267054Y (en) * | 2008-09-11 | 2009-07-01 | 常州市超顺电子技术有限公司 | Metal base copper foil covered board |
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| CN107084321A (en) * | 2017-05-08 | 2017-08-22 | 安徽科发信息科技有限公司 | A kind of high heat conduction LED substrate |
| CN208540063U (en) * | 2017-10-31 | 2019-02-22 | 苏州新海宜电子技术有限公司 | High-definition digital video encoder |
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2017
- 2017-10-31 CN CN201711048352.4A patent/CN109729359A/en active Pending
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| JP2006173612A (en) * | 2004-12-13 | 2006-06-29 | Shobin Kigyo Kofun Yugenkoshi | Substrate having high thermal conductivity and process for manufacturing it |
| CN201267054Y (en) * | 2008-09-11 | 2009-07-01 | 常州市超顺电子技术有限公司 | Metal base copper foil covered board |
| CN103338354A (en) * | 2013-06-17 | 2013-10-02 | 青岛海信电子设备有限公司 | Small-sized video encoding equipment, and video capture, coding and transmission system |
| CN105357859A (en) * | 2015-10-20 | 2016-02-24 | 上海斐讯数据通信技术有限公司 | Cooling structure and printed circuit board |
| CN205407841U (en) * | 2016-02-23 | 2016-07-27 | 苏州新海宜电子技术有限公司 | Data link terminal with battery measurement intelligent management |
| CN107084321A (en) * | 2017-05-08 | 2017-08-22 | 安徽科发信息科技有限公司 | A kind of high heat conduction LED substrate |
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| CN114401403A (en) * | 2021-12-30 | 2022-04-26 | 爱克斯维智能科技(苏州)有限公司 | Video wireless transmission image coding method, system and device for remote control excavator |
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