CN109743620A - It is a kind of to support vehicle carrying video system derived from online and offline USB interface video data - Google Patents
It is a kind of to support vehicle carrying video system derived from online and offline USB interface video data Download PDFInfo
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- CN109743620A CN109743620A CN201910083307.5A CN201910083307A CN109743620A CN 109743620 A CN109743620 A CN 109743620A CN 201910083307 A CN201910083307 A CN 201910083307A CN 109743620 A CN109743620 A CN 109743620A
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- circuit
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- sata
- usb
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Abstract
Vehicular video processing system derived from online and offline USB interface data is supported the invention discloses a kind of, including cabinet, air plug, master control borad, master control borad includes primary processor, SSD solid state storage elements, video coding circuit, USB derived circuit, accessory circuit, and SSD solid state storage elements include SATA interface circuit and usb circuit, bridgt circuit, high-speed analog switch circuit, SSD control circuit and storage chip；Bridgt circuit is used to transfer usb circuit for SATA interface, and the SATA bus of SSD control circuit can be connected to SATA interface circuit or bridgt circuit by management of the high-speed analog switch circuit for SATA bus.Vehicle carrying video system of the invention supports online and offline video data to export, and export speed improves nearly 10 times, and does not need to install additional driving and application software, does not need to remove SSD storage unit, easy-to-use simple and convenient.
Description
Technical field
The invention belongs to electronic technology fields, and in particular to a kind of vehicle carrying video system.
Background technique
With hyundai electronics Information Technology Development and military vehicle equipment information, visual requirement, military vehicle-mounted view
Display system is widely used.Multi-angle, real time monitoring and record vehicle driving mistake can not only be realized by this system
Video information in journey, and by carrying out analysis and big data management to stored video data, vehicle can be obtained
Driving information, operating characteristics, the posture of operation, fighting effect and enemy's information etc. obtain information letter to vehicle Operating ettectiveness is improved
Breath improves firepower striking capability and is of great significance.
Currently, the export of vehicle carrying video system storage information has online and offline two ways, online export, which is divided into, to be passed through
Network interface, the modes such as specific download equipment export；Offline export is that storage dish is removed from vehicle carrying video system, is connected to reading
Export mode on computer.
USB3.0 interface introduces full-duplex data transmission.2 are used to send data in 5 routes, and another 2 are used to receive
Data are ground wires there are also 1.It is written and read at full tilt that is, USB 3.0 can be synchronized.The maximum of USB3.0 passes
Defeated bandwidth is up to 5.0Gbps (640MB/s), is suitable for transmission of large capacity video data file.For example, one uses USB3.0's
The data file of 1GB can be transferred to another host at 15 seconds by flash drive.USB3.0 interface power supply capacity is 1A,
Support the states such as standby, suspend mode and pause.Windows, Linux, Android, Mac operating system all support USB3.0 interface, that is, insert
I.e. with without installing additional driving and software.
With the continuous improvement of vehicle carrying video system video resolution, the video data volume of storage is increasing, can be pre-
The USB3.0 Interface Video data export mode for seeing that high speed, high bandwidth, plug and play, adaptation multiple operating system are supported extensively is certain
Following development trend can be become.
Summary of the invention
Aiming at the shortcomings of the prior art, the present invention provides a kind of online and offline USB interface video counts of support
According to derived vehicle carrying video system.
The present invention is achieved by the following technical solutions.
It is a kind of to support Vehicular video processing system derived from online and offline USB interface data, including cabinet, air plug, master
Control plate, which is characterized in that the master control borad includes primary processor, SSD solid state storage elements, video coding circuit, USB export electricity
Road, accessory circuit, the SSD solid state storage elements include SATA interface circuit and usb circuit, bridgt circuit, high speed mould
Quasi- switching circuit, SSD control circuit and storage chip；Bridgt circuit is used to transfer usb circuit as SATA interface, high speed
Analog switching circuit be used for SATA bus management, the SATA bus of SSD control circuit can be connected to SATA interface circuit or
Bridgt circuit.
Further, the SSD solid state storage elements further include electric power management circuit, are used for SATA interface circuit and USB
The power management of interface.
Further, the SSD solid state storage elements power on the SATA bus port that default is connected to primary processor, work as USB
When cable is inserted into, high-speed analog switch circuit is connected to the SATA bus of SSD control circuit the SATA interface of bridgt circuit switching,
When USB cable is extracted, high-speed analog switch circuit is connected to the SATA bus of SSD control circuit the SATA bus of primary processor
Port.
Further, the accessory circuit includes electric pressure converter, CAN bus, internal storage location.
Further, the primary processor uses TMS320DM8168.
Further, the bridgt circuit selects chip JMS580,
Advantageous effects of the invention:
Vehicle carrying video system derived from online and offline USB interface video data of the invention, supports online and offline view
Frequency exports speed and improves nearly 10 times according to export, and does not need to install additional driving and application software；It does not need to open
Cabinet removes SSD storage unit, easy-to-use simple and convenient, improves the derived working efficiency of video data.
Detailed description of the invention
Fig. 1 is present system composition block diagram；
Fig. 2 is SSD solid state storage elements application block diagram of the present invention；
Fig. 3 is SSD solid state storage elements functional block diagram of the present invention.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The present invention builds Vehicular video processing system as primary processor using TMS320DM8168, completes HD video
Acquisition and processing.The SSD solid-state that high speed SATA interface is written in collected video data is deposited by the SATA interface of DM8168
Storage unit, and application high-speed bus switch and power management techniques, realize USB3.0 interface and SATA interface to SSD solid-state storage
The read-write management of unit, to complete online and offline USB3.0 Interface Video data export function.
Support the composition of vehicle carrying video system derived from online and offline USB3.0 Interface Video data as shown in Fig. 1, it is main
It to be made of master control borad, cabinet, air plug etc..Master control borad include primary processor, SSD solid state storage elements, video coding circuit,
USB derived circuit, accessory circuit.
Master control borad is the nucleus module of system, selects TMS320DM8168 as primary processor, using low-power consumption, exempts from wind
Fan, wide temperature, High Reliability Design, the main acquisition for completing video, storage, processing, export and with the communication of exterior terminal, press
The functions such as key processing.TMS320DM8168 includes 3 road independently programmable high clear video image coprocessors, supports 12 road 720p/
30 frames or 3 road 1080p/60 frame coding and decoding videos, supporting multi-channel video output, (high-definition digital video output and analog video are defeated
Out), Peripheral Interface enriches (PCIe, USB, UART, kilomega network, SATA etc.), can meet this system and carry out H.264 to four road videos
Coding requirement.The acquisition of head end video signal and A/D conversion are completed using the TVP5158 of TI company, include four tunnel high quality
NTSC/PAL video decoder digitizes and is decoded into digital video output the analog video format of input.The every road of decoder
Including 10 27MSPS ADC, composite input signal is taken out with the sampling of 2x ITU-R BT.601 clock frequency, line frequency locking alignment
Take 1x pixel rate.CVBS decoding adapts to comb filter using 5 rows, is used for brightness and chroma data access, four road ADC are only
Vertical work.
SSD solid state storage elements are written in collected video data by the SATA interface of DM8168.Storage 1 hour 4
H.264 the compressed video in a channel takes around the space of 2.7GB.It, can be with if selection 256GB SSD solid state storage elements
The video compression data of the H.264 format of storage 256/2.7=94.8 hours.
When normal use, by SATA interface SSD solid state storage elements are written in collected video data by DM8168；When
After Vehicular video processing system is worked normally or is powered off, external USB cable (USB cable provides 5V, GND, D+, tetra- signals of D-)
When insertion, at this moment SSD solid state storage elements are identified as mass-memory unit by external equipment, and external equipment can read and write SSD
The video data of solid state storage elements storage；After the completion of reading, external USB cable is pulled out, and master control borad continues collected view
Frequency evidence is written to SSD solid state storage elements.
SSD storage unit functional block diagram of the present invention is as shown in Fig. 3, including USB3.0 turns SATA bridge and connects circuit, power supply pipe
Manage circuit, high-speed analog switch circuit, SSD control circuit and NAND FLASH storage chip composition.
As shown in figure 3, bridging chip JMS580 is selected to convert SATA interface control SATA SSD control for USB3.0 interface
Coremaking piece meets SATA 6Gb/s transmission specification, continues read or write speed and reaches as high as 560MB/s, provides atmospherical discharges 8KV, connect
The ESD protective capability of touching electric discharge 4KV.USB3.1 interface specification standard and USB UASP codes and standards are followed, USB3.1 is supported to save
Power mode, backward compatible USB2.0 interface, plug and play.Support 25MHz external crystal-controlled oscillation.
As shown in figure 3, selecting the power management of power supply distribution chip TPS2080 realization SATA and USB3.0 interface；It powers on
Sata port is defaulted as to power to SSD storage unit；When USB cable insertion, USB power supply is detected effectively, at this moment TPS2080
It is USB power supply the power switching of SSD storage unit.When USB cable is extracted, at this moment confession of the TPS2080 SSD storage unit
Cutting is changed to SATA power supply.
As shown in figure 3, selecting the management of high-speed analog switch circuit DS125MB203 realization SATA bus；It powers on and is defaulted as
The SATA bus of SSD control circuit is connected to the SATA bus port of DM8168；When USB cable insertion, detect that USB power supply has
Effect, at this moment DS125MB203 is connected to the SATA bus of SSD control circuit the SATA bus port of JMS580 switching.When USB electricity
When cable is extracted, DS125MB203 is connected to SSD control circuit SATA bus the SATA bus port of DM8168.
Above-described is only presently preferred embodiments of the present invention, not limitation invention.It should be understood that for the general of this field
For logical technical staff, under technical inspiration provided by the present invention, other equivalent improvement can also be made, this may be implemented
The purpose of invention, is regarded as protection scope of the present invention.
Claims (6)
1. a kind of support Vehicular video processing system derived from online and offline USB interface data, including cabinet, air plug, master control
Plate, which is characterized in that the master control borad includes primary processor, SSD solid state storage elements, video coding circuit, USB export electricity
Road, accessory circuit, the SSD solid state storage elements include SATA interface circuit and usb circuit, bridgt circuit, high speed mould
Quasi- switching circuit, SSD control circuit and storage chip；Bridgt circuit is used to transfer usb circuit as SATA interface, high speed
Analog switching circuit be used for SATA bus management, the SATA bus of SSD control circuit can be connected to SATA interface circuit or
Bridgt circuit.
2. Vehicular video processing system according to claim 1, which is characterized in that the SSD solid state storage elements also wrap
Electric power management circuit is included, the power management for SATA interface circuit and USB interface.
3. Vehicular video processing system according to claim 1 or 2, which is characterized in that the SSD solid state storage elements,
The SATA bus port that default is connected to primary processor is powered on, when USB cable insertion, high-speed analog switch circuit controls SSD
The SATA bus of circuit is connected to the SATA interface of bridgt circuit switching, when USB cable is extracted, high-speed analog switch circuit handle
The SATA bus of SSD control circuit is connected to the SATA bus port of primary processor.
4. Vehicular video processing system according to claim 3, which is characterized in that the accessory circuit includes voltage conversion
Device, CAN bus, internal storage location.
5. Vehicular video processing system according to claim 1, which is characterized in that the primary processor uses
TMS320DM8168。
6. Vehicular video processing system according to claim 1, which is characterized in that the bridgt circuit selects chip
JMS580。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083307.5A CN109743620A (en) | 2019-01-28 | 2019-01-28 | It is a kind of to support vehicle carrying video system derived from online and offline USB interface video data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083307.5A CN109743620A (en) | 2019-01-28 | 2019-01-28 | It is a kind of to support vehicle carrying video system derived from online and offline USB interface video data |
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| Publication Number | Publication Date |
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| CN109743620A true CN109743620A (en) | 2019-05-10 |
Family
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| CN201910083307.5A Pending CN109743620A (en) | 2019-01-28 | 2019-01-28 | It is a kind of to support vehicle carrying video system derived from online and offline USB interface video data |
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|---|---|---|---|---|
| JP2012043025A (en) * | 2010-08-13 | 2012-03-01 | Buffalo Inc | Storage device |
| US20120089766A1 (en) * | 2010-10-08 | 2012-04-12 | Phison Electronics Corp. | Non-volatile memory storage apparatus, memory controller and data storing method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190510 |
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| RJ01 | Rejection of invention patent application after publication |