CN206962929U - A kind of portable digital image signal generating apparatus - Google Patents
A kind of portable digital image signal generating apparatus Download PDFInfo
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- CN206962929U CN206962929U CN201720936169.7U CN201720936169U CN206962929U CN 206962929 U CN206962929 U CN 206962929U CN 201720936169 U CN201720936169 U CN 201720936169U CN 206962929 U CN206962929 U CN 206962929U
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- display data
- image signal
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- digital image
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Abstract
It the utility model is related to a kind of portable digital image signal generating apparatus.It realizes the generation of non-standard digital image signal, and the power consumption of equipment is reduced using low power processor, realizes the switching of a variety of input powers.The technical solution of the utility model includes power converting circuit, display data generation circuit, display data buffer circuit, digital picture output interface circuit；Power converting circuit is used for respectively display data generation circuit, display data buffer circuit and digital image output interface circuit and provides a variety of different voltages；Described display data generation circuit is used to produce the display image data needed, and is cached by simplifying isa bus feeding display data buffer circuit；Display data buffer circuit is used to provide the display image data of caching to data source for digital picture output interface circuit；Digital picture output circuit is used to produce a variety of data image signals, and suitable signal source is provided for the collection of data image signal.
Description
Technical field
The utility model belongs to data image signal technical field of measurement and test, and in particular to a kind of portable digital image signal
Produce equipment.
Background technology
Collection, compression, record, the transmission of data image signal suffer from being widely applied in all trades and professions, for aviation
The acquisition applications scope of the data image signal of flight test is more and more extensive, to the digitized map for test system joint-trial
As signal source proposes higher requirement.
It is more and more firstly for the demand of non-standard digital image signal source, secondly in order to adapt to outfield work it is special
Environmental demand, volume and power reguirements to digital image signal source propose stricter limitation, therefore design a kind of full
The data image signal generation equipment of sufficient flight test test system joint-trial demand just seems and is highly desirable.
Utility model content
In view of this, the utility model provides a kind of portable digital image signal generating apparatus, and it realizes non-standard
The generation of data image signal, the power consumption of equipment is reduced using low power processor, realize the switching of a variety of input powers.
To solve the problems, such as that prior art is present, the technical solution of the utility model is：A kind of portable digital image letter
Number produce equipment, it is characterised in that：Including power converting circuit, display data generation circuit, display data buffer circuit, numeral
Image output interface circuit；
Described power converting circuit is used for respectively display data generation circuit, display data buffer circuit and digitized map
As output interface circuit provides a variety of different voltages；
Described display data generation circuit is used to produce the display image data needed, and by simplifying isa bus
Display data buffer circuit is sent into be cached；
It is digital picture output interface circuit that described display data buffer circuit, which is used for the display image data of caching,
Data source is provided；
The digital picture output circuit is used to produce a variety of data image signals, for adopting for data image signal
Collection provides suitable signal source.
Described display data generation circuit is specifically used for：
The data to be shown are directly generated by innernal CPU, or read the image being stored in USB storage device or TF card
Data.
Described power converting circuit includes AC-DC power-switching circuits, DC-DC power source conversion circuit, Power convert and patrolled
Circuit and 3 LDO power converting circuits, AC-DC power-switching circuits and DC-DC power source conversion circuit are collected by AC or DC electricity
Source is converted into 5V DC supply input Power convert logic circuits, and Power convert logic circuit passes through 3 LDO power converting circuits
Export different dc sources.
Described power converting circuit provides 3.3V voltages for display data generation circuit, is carried for display data buffer circuit
For 3.3V and 1.2V voltage, digital picture output interface circuit provides 3.3V and 1.8V voltage.
The input voltage of described power converting circuit inputs for the 5V inputs, 9 ~ 36VDC inputs or 220V civil powers of standard
In any one.
Described display data generation circuit is additionally operable to internal generation display data or by reading in External memory equipment
The data in face complete decoding.
Compared with prior art, it is as follows the advantages of the utility model：
1) the utility model supports three kinds of input voltages, and wherein 5V control sources can be used for using USB when outfield works
The direct power supply to the device of power supply；The wide pressure inputs of 9 ~ 36VDC can be powered with the 12V/24V power supplys of standard；
2) the utility model can produce the picture signal of two kinds of various criterions simultaneously, use single device as multichannel figure
As the collection of signal provides signal source；
3) the utility model completes the setting of image output parameter using the RS232 interface of standard, facilitates defeated to equipment
Go out the change of parameter；
4）The utility model supports the output of non-standard digital image, can be to parameters such as picture output signal refresh rates
It is configured, realizes the support to noncanonical format digital picture.
Brief description of the drawings
Fig. 1 is the utility model principle block diagram；
Fig. 2 is the utility model power converting circuit theory diagram；
Fig. 3 is the utility model digital picture output interface circuit theory diagram.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
The present embodiment provides a kind of portable digital image signal generating apparatus, referring to Fig. 1：Including power converting circuit 1,
Display data generation circuit 2, display data buffer circuit 3, digital picture output interface circuit 4；
Described power converting circuit 1 is display data generation circuit 2, and display data buffer circuit 3 and digital picture are defeated
Outgoing interface circuit 4 provides a variety of different voltage outputs；
Referring to Fig. 2：Described power converting circuit 1 is that display data generation circuit 2 provides 3.3V voltages, is display data
Buffer circuit 3 provides 3.3V and 1.2V voltage, and digital picture output interface circuit 4 provides 3.3V and 1.8V voltage.
Described power converting circuit 1 has the input voltage of plurality of optional, can be 5V inputs, the 9 ~ 36VDC of standard
Input or 220V civil powers input in any one, can according to reality external power source characteristic switch unit is selected by power supply
Realize from multiple power supplies input, suitable input all the way of selection is powered for whole equipment.
Power supply selection switch unit has the input of three tunnels, the output of three tunnels.Power supply selection switch unit is realized from the input of three tunnels
Selection exports for three tunnels power all the way.Power supply selection switch unit three tunnel input respectively 1 is by 220V alternating currents after conversion
5V dc sources, the 5V dc sources of 2 direct outside inputs, the 1 5V dc sources by 9 ~ 36VDC electricity after conversion.
The switching that multiple power supplies input, 220V civil powers in power converting circuit design process are realized by multidiameter option switch
Input produces 5V voltages (ac main power) using AC-DC, reuses LDO by 5V voltage conversions into 3.3V, 1.8V, 1.2V needs
Voltage.
220V AC powers can be directly changed into direct current 5V outputs by AC-DC power transfer modules, have wide input voltage：
85~305VAC/120~430VDC, military project grade low-temp working range：- 40 ~ 70 DEG C, conversion efficiency is up to 87%, meets
IEC60950, EN60950, UL60950 Safety Approval standard, there is the defencive functions such as output short-circuit, overvoltage, excessively stream.
The wide pressure inputs of 9 ~ 36VDC produce 5V voltages (direct current main power source) using DC-DC in power converting circuit design process,
LDO is reused by 5V voltage conversions into 3.3V, 1.8V, 1.2V required voltage.
Direct current main power source has 9 ~ 36V wide-range input voltage, single channel output 5V, direct current main power source power input portion
Reverse-connection protection circuit is also added into, prevents dc source reversal connection burning apparatus.
Described display data generation circuit 2 is responsible for producing the display image data needed, and the generation of view data is divided into
Two ways：First way directly generates the data to be shown by the innernal CPU of display data generation circuit 2, passes through what is simplified
Isa bus is sent into display data buffer circuit 3 and cached；The second way is read by the CPU of display data generation circuit 2 and is stored in
View data in USB storage device or TF card, display data buffer circuit 3 is sent into by the isa bus simplified after decoding and delayed
Deposit.
Display data buffer circuit 3 mainly reads image caused by display data generation circuit 2 by the isa bus simplified
Data, and in the DDR SDRAM being cached in circuit, data source is provided for digital picture output circuit 4.
Digital picture output circuit 4 has the interfaces such as LVDS, DVI, believes mainly for generation of a variety of digital pictures
Number, provide suitable signal source for the collection of data image signal.
Described display data generation circuit 2 can be produced display data with inside or by reading in External memory equipment
The data in face complete decoding.
Display data buffer circuit 3 completes the caching of image data by DDR SDRAM.
Described digital picture output interface circuit 4 can produce two kinds of different marks simultaneously by different interface chips
Accurate picture signal, the image resolution ratio parameter that digital picture output circuit 4 exports are modified by RS232 interface.
The generation of data image signal is completed as the primary processor of system using ARM9 digital pictures pretreatment unit,
USB/SD image storage units are mainly used in the view data that storage needs to show, ARM9 digital picture pretreatment units pass through reading
The view data of storage in exterior storage medium (storage medium of USB interface or the storage medium of SD interface) is taken, and decodes fortune
After calculation, it is sent into by the isa bus of simplifying of ARM9 digital picture pretreatment units in FPGA digital image processing units, FPGA numbers
Word graphics processing unit completes loading and DDR of the view data to DDR SDRAM according to DDR SDRAM time sequential routine
SDRAM refreshing keeps function, after the completion of data loading, number that FPGA digital image processing units are set according to RS232 interface
The parameters such as word image refresh rate read the view data in DDR SDRAM, according to the sequential of setting by parallel RGB data and DE
Enable signal is sent into DVI digital image codings unit and LVDS digital image coding units, DVI digital image codings unit according to
The data of FPGA digital image processing units output complete the DVI coding outputs of digital picture, and LVDS digital image coding lists
The LVDS that the data that member exports according to FPGA digital image processing units complete digital picture encodes output, realizes that digital picture is believed
Number produce function.RS232 interface is used to be communicated with the RS232 interface of computer, is mainly used in realizing to caused by needs
The setting of the parameters such as image resolution ratio, refresh rate.
It is described above, preferred embodiment only of the present utility model, it is not intended to limit protection of the present utility model
Scope.
Claims (6)
- A kind of 1. portable digital image signal generating apparatus, it is characterised in that：Including power converting circuit (1), display data Generation circuit (2), display data buffer circuit (3), digital picture output interface circuit (4)；Described power converting circuit (1) be used for respectively display data generation circuit (2), display data buffer circuit (3) and Digital picture output interface circuit (4) provides a variety of different voltages；Described display data generation circuit（2）For producing the display image data needed, and sent by simplifying isa bus Enter display data buffer circuit (3) to be cached；It is digital picture output interface circuit that described display data buffer circuit (3), which is used for the display image data of caching, (4) data source is provided；The digital picture output circuit (4) is used to produce a variety of data image signals, for adopting for data image signal Collection provides suitable signal source.
- A kind of 2. portable digital image signal generating apparatus according to claim 1, it is characterised in that：Described display Data generating circuit (2) is specifically used for：The data to be shown are directly generated by innernal CPU, or read the picture number being stored in USB storage device or TF card According to.
- A kind of 3. portable digital image signal generating apparatus according to claim 1 or 2, it is characterised in that：Described Power converting circuit (1) includes AC-DC power-switching circuits, DC-DC power source conversion circuit, Power convert logic circuit and 3 AC or DC power is converted into 5V by LDO power converting circuits, AC-DC power-switching circuits and DC-DC power source conversion circuit DC supply input Power convert logic circuit, Power convert logic circuit are exported different by 3 LDO power converting circuits Dc source.
- A kind of 4. portable digital image signal generating apparatus according to claim 3, it is characterised in that：Described power supply Translation circuit (1) be display data generation circuit (2) provide 3.3V voltages, for display data buffer circuit (3) provide 3.3V and 1.2V voltage, digital picture output interface circuit (4) provide 3.3V and 1.8V voltage.
- A kind of 5. portable digital image signal generating apparatus according to claim 4, it is characterised in that：Described power supply The input voltage of translation circuit (1) is any one in the 5V inputs, 9 ~ 36VDC inputs or the input of 220V civil powers of standard.
- A kind of 6. portable digital image signal generating apparatus according to claim 5, it is characterised in that：Described display Data generating circuit (2) is additionally operable to internal generation display data or completes solution by reading the data inside External memory equipment Code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720936169.7U CN206962929U (en) | 2017-07-31 | 2017-07-31 | A kind of portable digital image signal generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720936169.7U CN206962929U (en) | 2017-07-31 | 2017-07-31 | A kind of portable digital image signal generating apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206962929U true CN206962929U (en) | 2018-02-02 |
Family
ID=61381757
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720936169.7U Expired - Fee Related CN206962929U (en) | 2017-07-31 | 2017-07-31 | A kind of portable digital image signal generating apparatus |
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| CN (1) | CN206962929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277298A (en) * | 2017-07-31 | 2017-10-20 | 西安中飞航空测试技术发展有限公司 | Portable digital image signal generating apparatus |
-
2017
- 2017-07-31 CN CN201720936169.7U patent/CN206962929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277298A (en) * | 2017-07-31 | 2017-10-20 | 西安中飞航空测试技术发展有限公司 | Portable digital image signal generating apparatus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 Termination date: 20190731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |