CN104866798B - It is a kind of for obtaining the bar code reading engine of image data - Google Patents
It is a kind of for obtaining the bar code reading engine of image data Download PDFInfo
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Abstract
The present invention relates to a kind of for obtaining the bar code reading engine of image data, image sensor array, MIPT bridging chip, decoding chip, aiming light source, lighting source, global electronic shutter control circuit, the first support plate, the second support plate and the pedestal including one based on complementary metal oxide semiconductor；Its integrated design, is reduced the overall volume of bar code reading engine by the structure of bar code reading engine as a whole；The signal that image sensor array exports is exported after MIPT bridging chip to decoding chip, reduce the compatibility issue of entire bar code reading engine and simplifies design, not only bandwidth had been increased, has improved performance, but also cost, complexity, power consumption and technique can be reduced.
Description
Technical field
The invention belongs to automatic identification industries, are related to a kind of for obtaining the bar code reading engine of image data.
Background technique
Two-dimensional bar code is the black and white being distributed according to certain rule at plane (on two-dimensional directional) with specific geometric figure
Alternate matrix area, the matrix area is to record symbol information.Two dimensional code can be divided into stack two dimensional code and matrix form
Two dimensional code bar code.Stack two dimensional code is stacked by the bar code of multirow cutting back；Matrix two-dimensional barcode is with matrix
Form composition, indicates binary one with " point " on matrix respective element position, indicates binary zero with sky, by point and idle discharge
Column composition data code.In daily life and industrial application, bar code using more and more extensive, such as: retail trade, logistics
Industry, financial industry are increasing to the use demand of bar code.
The requirement that the rapid development of barcode technology reads equipment to bar code is also higher and higher, and bar code reads engine as reading
One important component of bar code, the bar code decoding engine volume to circulate on existing market is big, poor compatibility, production efficiency are low
Under, it is at high cost.In terms of electronic circuit, the CMOS used is produced as the technique of early stage, and production time is longer, is made using pixel
The CMOS productive year, production time was long in 2005, and using the CMOS of pixel 6*6um^2, total pixel is 752*480,
Wafer size is that 9mm*9mm photosensitive area is 4.5mm*2.9mm, and average power consumption isFrame number is 60 frames/second, boundary
Face is DVP；From optics aspect, using spherical surface lens module, visual field is generally 42 ° or so, and F# is in 6 or so, camera lens and CMOS
Separate type component；In terms of production, dispensing after lens focusing need to be fixed, increase production process.
For the bar code decoding engine to circulate on existing market there are various deficiencies, volume is big, uses spherical surface camera lens mould
Group is limited to production requirement, so that the volume of mould group can not reduce；Its poor optical properties, visual field is small, influence using, aperture is small,
Extraneous light filling is needed, power consumption is big；It is compatible with performance it is poor, do not support MTPT interface, can only external MTPT bridging chip, increase at
This；Its speed is slow, and the CMOS frame number used is low, and reading speed is slow；Its power consumption is high, and the CMOS power consumption used is big；Its price is high,
The size of CMOS wafer is big, and cost is higher, and the decoding chip used needs external connection without MTPT interface；Its life cycle
Uncontrollable, CMOS is the product of early stage, and production time is longer, is easier to be eliminated and influence subsequent production；Its production efficiency is low,
Camera lens is fixed again after first focusing with CMOS, and the requirement to production environment is high, and the error being artificially introduced is big, and production efficiency is lower.
Summary of the invention
The purpose of the present invention is to provide a kind of structures simply, has MTPT interface, and image quality is high, and small in size is used for
Obtain the bar code reading engine of image data.
In order to solve the above-mentioned technical problem present invention employs following technical solutions, provide a kind of for obtaining image data
Bar code reading engine, including an image sensor array based on complementary metal oxide semiconductor, MTPT bridging chip, solution
Code chip aims at light source, lighting source, global electronic shutter control circuit, the first support plate, the second support plate and a pedestal；It is described
Image sensor array is fixed on the one side of the first support plate, and the another side of the first support plate is fixed on the second support plate；The pedestal
Package image sensor array；It aims at light source and lighting source is arranged in around image sensor array；The decoding chip
Be fixed on the back side of the second support plate, MTPT bridging chip, global electronic shutter control circuit be fixed on the second support plate front or
The back side；The global electronic shutter control circuit is electrically connected with the image sensor array based on complementary metal oxide semiconductor
It connects；The decoding chip is electrically connected with lighting source, aiming light source and global electronic shutter control circuit, and decoding chip passes through
MTPT bridging chip is electrically connected with the image sensor array based on complementary metal oxide semiconductor.
Wherein, a metallic support is socketed on the outside of pedestal, by the image sensing based on complementary metal oxide semiconductor
Device array is fixed on the second support plate.
Wherein, the first support plate is connect with the second support plate by board to board connector.
Wherein, the imaging sensor that complementary metal oxide semiconductor is based on to lighting source and aiming light source
Ipsilateral or heteropleural.
Wherein, the wavelength of the lighting source is 380-760nm.
Wherein, the angle of divergence for aiming at light source is equal to greatly 15 °.
Wherein, first support plate, the second support plate are flexible circuit board or hard circuit board.
Wherein, the lighting source is one or more light emitting diodes.
Invention additionally discloses a kind of for obtaining the bar code reading engine of image data, including one is aoxidized based on complementary metal
The image sensor array of object semiconductor, MTPT bridging chip, decoding chip, to aim at light source, lighting source and global electronics fast
Gate control circuit；The global electronic shutter control circuit and the image sensor array based on complementary metal oxide semiconductor
Electrical connection, sends a control signal to image sensor array；The decoding chip passes through MTPT bridging chip gold complementary with being based on
The image sensor array electrical connection for belonging to oxide semiconductor, obtains the image data of image sensor array；The decoding core
Piece is also electrically connected with aiming light source and lighting source and global electronic shutter control circuit.
Wherein, the bar code reading engine further includes a manual trigger circuit, and the manual trigger circuit includes that control is pressed
Key and control circuit, the control button connect control circuit, the control circuit and decoding chip；The manual trigger circuit
Control button be depressed after, the bar code reading engine acquires image data, and sends image data to decoder module.
The beneficial effects of the present invention are:
Image-forming assembly integrated design is reduced bar code and known by one, the structure of bar code reading engine as a whole
The overall volume of read engine；
Secondly, using MTPT bridging chip, by the letter of the imaging sensor output based on complementary metal oxide semiconductor
It number is exported after MTPT bridging chip, reduce the compatibility issue of entire bar code reading engine and simplifies design, both increased
Bandwidth improves performance, while can reduce cost, complexity, power consumption and EMI again；
Thirdly, using global electronic shutter control circuit control image sensor array, can within the same time for exposure
Multiple images pixel is captured, keeps image quality higher；
In addition, each component of bar code reading engine passes through meticulous layout designs, space can be maximally reduced
Occupy, reduce the volume of the engine.
Detailed description of the invention
Fig. 1 show the schematic diagram of internal structure of image-forming assembly of the invention；
Fig. 2 show the embodiment structure signal of the bar code reading engine for obtaining image data of the invention
Figure；
Fig. 3 show another embodiment structure signal of the bar code reading engine for obtaining image data of the invention
Figure；Wherein, A is front view, and B is rear view；
Fig. 4 show another embodiment structure signal of the bar code reading engine for obtaining image data of the invention
Figure；Wherein, C is front view, and D is rear view；
Fig. 5 show the structural block diagram of the bar code reading engine for obtaining image data of the invention.
Label declaration:
1 image-forming assembly of metallic support, 2 lens, 201 pedestal, 202 first support plate 203 is based on complementary metal oxide half
204 board to board connector 3 of image sensor array of conductor aims at 45 second support plate of lighting source of light source, 6 input and output
7 decoding chip of module, 8 MTPT bridging chip 9
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.
As shown in fig.1, the invention discloses a kind of for obtaining the bar code reading engine of image data, including one is based on
The image sensor array 204 of complementary metal oxide semiconductor, decoding chip 8, aims at light source 4, shines MTPT bridging chip 9
Mingguang City source 5, global electronic shutter control circuit, the first support plate 203, the second support plate 6 and a pedestal 202；
In present embodiment, the image sensor array based on complementary metal oxide semiconductor is fixed on the first load
The one side of plate 203, the another side of the first support plate 203 are fixed on the second support plate 6, the figure based on complementary metal oxide semiconductor
As sensor array generates image data for receiving target area image；It can be global electronic shutter imaging sensor battle array
Column, the image sensor array can also encapsulate with an at least lens 201 and form an integrated image-forming assembly, which can
Digitized bar code image is generated according to the signal of incident light, image sensor array 204 can use CMOS integration module, can
It is small in size using dedicated integrated global electronic shutter image sensor array 204, and can be held in an exposure cycle
Continuous exposure multiple images pixel, provides the image being more clear, improves decoded feasibility.At least one described lens 201
Can include: positive lens combines with negative lens, double glued microscope groups are closed, positive lens combine with cemented doublet, double glued mirrors with it is just saturating
Microscope group is closed or two positive lens are combined with negative lens.The image-forming assembly 2 uses integrally formed component, facilitates the life of product
It produces, installation error, artificial the defects of relocating inaccuracy caused by reducing assembling product in the process, the precision of product is more
Good, performance is more preferably.
The 202 package image sensor array of pedestal；The shape phase of the shape of the pedestal 202 and image sensor array
Matching, pedestal 202 can be made of plastic material, and the material of black is preferably used to reduce stray light to image quality
It influences, light weight can be made of die sinking injection molding manner, and yield is high, uniform quality, so as to improve the quality of imaging.Base
The structure of fool proof can be set on seat 202 so as to prevent installation dislocation etc., the shape of pedestal 202 may be selected rectangular, round
It encapsulates described image sensor array Deng, pedestal 202 to be fixed on the first support plate 203, the pedestal 202 and the first support plate
203 connection can be used glue and fix, simple and convenient, and effect is preferable, and the connection of pedestal and the first support plate can also use
Screw is fixed, and anti-seismic performance is good, extends the service life of product.
It aims at light source 4 and lighting source 5 is arranged in around image sensor array；The aiming light source 4 is for aiming at
Target area forms the naked eyes visible light spot of geometry in reflecting surface, which can use such as feux rouges, green light
The light that can be significantly identified Deng naked eyes.In a preferred embodiment, the angle of divergence for aiming at light source 4 is equal to greatly 15 °.
The lighting source 5 can use LED light source, and wavelength can be 380-750nm, the lighting source of different wave length
5 are able to satisfy different demands, can be set according to specific service condition.The angle of divergence of lighting source 5 be 120 ° or its
He, the angle of divergence is suitable for greatly the big camera of field angle, is conducive to cover field range.LED illumination light source 5 can also be that band is poly-
Photosphere cover or without, the LED light source with ball cover have the lesser angle of divergence, be conducive to long distance illumination, without ball cover
LED illumination light source 5 is conducive to the big lighting apparatus of field of view angle.
The decoding chip 8 is fixed on the back side of the second support plate 6；The decoding chip 8 uses programmable logic circuit,
It can be run by single ASIC integrated circuit, realize hardware decoding, be different from traditional software decoding, traditional decoding process uses
Software decoding, error correction, graphics process scheduling algorithm need three integrated circuits.The decodable code system of decoding chip 8 includes
Very big extremely extra small code 128, Codabar, code 93, code 11, code 39, UPC, ENC, MSI etc., at least one bar code
The type of symbol can be the combination of identical or a variety of different bar codes, specific barcode types can include: PDF417,
2D bar code symbol such as DataMatrix, QR code, Maxicode, Aztec etc..
MTPT bridging chip 9, global electronic shutter control circuit are fixed on the front or the back side of the second support plate 6；Pass through
MTPT bridging chip 9 is communicated with the external world, and the nuclear interface standardizing inside mobile communication equipment is reduced compatibility issue
And simplify the whole design of product, make the interface of the product not only can increase bandwidth, improve performance, but also can reduce cost,
Complexity, power consumption and EMI, MTPT interface are only connected on the two physical layers of D-PHY or M-PHY when needed, D-
PHY is carried out data transmission using the synchronous differential clocks in 1 pair of source and 1~4 pair of differential data line.Data transmission uses the side DDR
Formula has data transmission in the lower edges of clock, the physical layer of D-PHY supports HS (high speed) and LP (low
Power) 2 kinds of operating modes use Low Voltage Differential Signal under HS mode, and power consumption is larger, but can transmit very high data speed
Rate (data rate is 80M~1Gbps)；Single-ended signal is used under LP mode, data rate is very low (< 10Mbps), but corresponding
Power consumption it is also very low.The combination of 2 kinds of modes ensure that MTPT bus can high speed when needing to transmit mass data (such as image)
Transmission, and power consumption can be reduced when not needing big data quantity transmission；
The global electronic shutter control circuit and the image sensor array 204 based on complementary metal oxide semiconductor
Electrical connection；Global electronic shutter control circuit can control the image sensor array based on complementary metal oxide semiconductor
204 expose multiple images pixel within same exposure period.The global electronic shutter control circuit can be with described based on complementary
The image sensor array 204 of metal-oxide semiconductor (MOS) is integrated or first support plate 203 is fixed on independent module
Or second on support plate 6.
The decoding chip 8 is electrically connected with lighting source 5, aiming light source 4, global electronic shutter control circuit, decodes core
Piece 8 is electrically connected by MTPT bridging chip 9 with the image sensor array 204 based on complementary metal oxide semiconductor.Decoding
The control instruction that chip 8 is sent by receiving control module/equipment/device/software of bar code reading engine internal or outside
Recognition and decoded function are opened, the module etc. that the internal control instruction is sent can be integrated in inside decoding chip 8, distinguish
Engine enters preparation state after working on power, and carries out barcode scanning decoding at any time.External control instruction can be defeated by an input
Module 7 receives external control signal, data of the input/output module 7 for the input of control instruction or with the external world out
Transmission controlled after can receiving the instruction for reading bar code from switch control module to decoding chip 8 and global electronic shutter
Circuit, imaging sensor send job control instruction, and control lighting source 5 and aim at light source 4 and start.The input/output module
7 can be used FPC connector, and flexible winding displacement or other connecting lines can be used to be attached and pass with external equipment for FPC connector
Defeated control signal, image data etc..Control signal is such as received by input/output module 7, control imaging sensor obtains image
And it triggers decoding chip 8 and attempts decoding.
In above embodiment:
The ipsilateral or different of image-forming assembly 2 can be arranged in lighting source 5 in the aiming light source 4 according to the demand of actual use
Side, and the quantity for aiming at light source 4 and lighting source 5 can be set as needed.As shown in fig.2, a specific implementation of the invention
In mode, the fixed image-forming assembly 2, is symmetrically arranged in the two sides of image-forming assembly 2 on 6 front of the second support plate of a strip
It is furnished with and aims at light source 4 and lighting source 5, input/output module 7 is arranged in another end of second support plate 6；Second support plate 6
The back side fixed decoding chip 8 and MTPT bridging chip 9.It is as shown in fig.3, being different from above embodiment,
The fixed image-forming assembly 2 on the front of the second support plate 6 is distributed 2 or more illuminations on the both sides of photographing module
Light source 5,1 or more aiming light source 4 is placed on the both sides up and down of the image-forming assembly 2 respectively, and the MTPT is bridged
Chip 9 is fixed on the lower section (front of the second support plate 6) of image-forming assembly 2, and decoding chip 8 is arranged in the back side of second support plate 6
And input/output module 7.As shown in fig.4, image-forming assembly 2 is set on the front of second support plate 6, image-forming assembly 2
The distribution of two sides up and down of the symmetrical lighting source 5 in two sides, image-forming assembly 2 aims at light source 4, places in the another side of the second support plate
Decoding chip 8, MTPT bridging chip 9 and input/output module 7.Specifically, in order to which maximum use space is arranged
Cloth, the decoding chip 8, MTPT bridging chip 9 can be rotated by 90 ° around respective center, and the setting of input/output module 7 is existed
The vacant position in the centre of decoding chip 8 and MTPT bridging chip 9 reduces entire to greatest extent so as to save space
The volume of component.
Embodiment listed above is only some of specific embodiments of the invention for example, therefore not limiting
The specific structure of the system reading engine, other arrangement modes of all parts of the bar code reading engine are equally applicable to
The present invention, details are not described herein.
In a preferred embodiment, a settable metallic support 1 is with the difference of above embodiment, is socketed
It is fixed on the second support plate 6 in the outside of pedestal 202, and by image-forming assembly 2, image-forming assembly 2 is made more using metallic support 1
It is firm, and play the purpose of protection image-forming assembly 2.Welding or limit can be used in the fixed form of metallic support 1 and the second support plate 6
The fixed mode etc. in position hole.The feature of error-proof structure can also be arranged in the metallic support 1, facilitate installation to position, prevent from pacifying
Wrongly installed mistake, protrusion or recess or notch etc. can be arranged in the bracket shell in error-proof structure feature, such as in the boss
202 lateral wall is equipped with lug, and the corresponding position of metallic support 1 is equipped with notch, and lug is limited in the indentation, there of metallic support 1.
In another preferred embodiment, the image-forming assembly 2 in above embodiment can also pass through with the second support plate 6
Board to board connector 3 connects, and board to board connector 3 and the interface of image-forming assembly 2 are mutually matched.In actual operation, plate is to plate
The quantity of 3 pin of connector can be selected 20 or greater than 20.
In another preferred embodiment, the first support plate 203 and the second support plate 6 of above embodiment can be flexible electrical
Road plate or hard circuit board.Using flexible circuit board, material is slim and graceful, is able to satisfy different installation needs；Using rigid circuit
Plate, stability is more preferably.
As shown in fig.5, the present invention also provides a kind of for obtaining the bar code reading engine of image data, including one is based on
The image sensor array 204 of complementary metal oxide semiconductor, decoding chip 8, aims at light source 4, shines MTPT bridging chip 9
Mingguang City source 5 and global electronic shutter control circuit；The installation fixation side of the bar code reading engine for being used to obtain image data
Formula can use the first support plate 203, the second support plate 6 carrying various components as described above.The global electronic shutter control circuit
It is electrically connected with the image sensor array 204 based on complementary metal oxide semiconductor, sends a control signal to imaging sensor
Array；The decoding chip 8 passes through MTPT bridging chip 9 and the image sensor array based on complementary metal oxide semiconductor
204 electrical connections, obtain the image data of image sensor array；The decoding chip 8 also with aim at light source 4 and lighting source 5,
The electrical connection of global electronic shutter control circuit.In this embodiment, the figure based on complementary metal oxide semiconductor
As sensor array 204 can form an integrated image-forming assembly 2 by the lens combination of target area reflection light with for receiving
Data used to capture images, such as capture paper document, packaging body case, the one-dimension code for adhering to or printing on machine surface,
The data symbols such as two dimensional code.The mode of the capture can be continuous capturing or high shock capturing.The image-forming assembly 2 may include being used for
Receive the lens group of the light reflected by target area, the image sensor array 204 based on complementary metal oxide semiconductor
204, receive the light of lens group reflection, transmission image pixel to MTPT bridging chip.The lens group of the image-forming assembly 2 with
And the technique of integrated molding can be used in image sensor array 204, to keep the quality of product more preferable, performance is more preferable, and
Reduce the volume of whole part.The integrated image sensor array 204 with global electronic shutter control circuit can be
Multiple images pixel is exposed simultaneously in same exposure cycle, so as to acquire the bar code image being more clear；The image passes
CCD or CMOS etc. can be used in sensor array 204.This is used to obtain the MTPT interface of the bar code reading engine of image data
The signal of image-forming assembly is simultaneously transferred to decoder module, connects decoder module and image-forming assembly by MTPT interface, can extend this
The communication function of bar code reading engine keeps the hardware compatibility performance more preferable.Dedicated MTPT bridging chip 9 can be used in MTPT interface
Or other have the interface equipment of MTPT function, keep the versatility of entire bar code reading engine, compatibility preferable.
In present embodiment, decoder module can be used any one following mode and realize, including but not limited to dedicated collection
At circuit, dedicated decoding chip 8, fpga chip, then having can also be using software decoding mould group, and preferred software decoding mould group can
Including mould group made of the modules such as microprocessor, digital signal processing chip and micro-control unit and its peripheral circuit set.
At least one aim at light source 4 at least a lighting source 5 is arranged in around decoder module, aiming light source 4 in target
Region forms the naked eyes visible light spot of geometry, which can be used the naked eyes such as feux rouges, green light and can significantly identify
Light.Also it can arrange that lighting source 5, lighting source 5 can be used patch type or pinned, can be in the surrounding of image-forming assembly
LED light etc..The size of the angle of divergence of lighting source 5 can be set according to the demand of actual use, be best choosing to cover field range
It selects.Preferred lighting source 5 can also be that, with optically focused ball cover or without optically focused ball cover, the LED light source with ball cover has smaller
The angle of divergence, be conducive to long distance illumination, be conducive to the big lighting apparatus of field of view angle without the lighting source 5 of ball cover.
Described further includes a manual trigger circuit, the manual triggering for obtaining the bar code reading engine of image data
Circuit includes control button and control circuit, and the control button connects control circuit, 8 electricity of the control circuit and decoding chip
Connection；After the control button of the manual trigger circuit is depressed, the bar code reading engine is by being based on complementary metal oxygen
The image sensor array 204 of compound semiconductor acquires image data, and sends image data to decoder module.The item
Code reading engine can also open the function of image data acquiring by internal automatic identification, and then carry out trial decoding.This
Trigger circuit in embodiment is used to control the work of decoding chip and image-forming assembly, enables image-forming assembly at one
Continuous exposure multiple images pixel in exposure period, and image pixel is sent to decoding chip by MTPT interface and is decoded
Processing, trigger circuit, which is also used to control, aims at light source 4 and the starting work of lighting source 5.
The embodiment of bar code reading engine of the upper only present invention for obtaining image data, is not intended to limit this
The scope of the patents of invention, it is all using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, or
Other related technical areas directly or indirectly are used in, are included within the scope of the present invention.
Claims (10)
1. a kind of for obtaining the bar code reading engine of image data, it is characterised in that: be based on complementary metal oxide including one
The image sensor array of semiconductor, decoding chip, aims at light source, lighting source, global electronic shutter control at MIPI bridging chip
Circuit, the first support plate, the second support plate and a pedestal processed；
Described image sensor array is fixed on the one side of the first support plate, and the another side of the first support plate is fixed on the second support plate；
The pedestal package image sensor array；It aims at light source and lighting source is arranged in around image sensor array；
The decoding chip is fixed on the back side of the second support plate, and MIPI bridging chip, global electronic shutter control circuit are fixed on
The front or the back side of second support plate；
The global electronic shutter control circuit is electrically connected with the image sensor array based on complementary metal oxide semiconductor；
The decoding chip is electrically connected with lighting source, aiming light source, global electronic shutter control circuit, and decoding chip passes through
MIPI bridging chip is electrically connected with the image sensor array based on complementary metal oxide semiconductor；MIPI bridging chip passes through
MIPI interface is connected on D-PHY M-PHY physical layer, and D-PHY is using the synchronous differential clocks in 1 pair of source and 1~4 pair of difference
Divided data line carries out data transmission, and the data transmission of D-PHY uses DDR mode, and the physical layer of D-PHY supports HS mode and LP
Mode uses Low Voltage Differential Signal under HS mode, uses single-ended signal under LP mode.
2. according to claim 1 for obtaining the bar code reading engine of image data, it is characterised in that: a metal branch
Frame is socketed on the outside of pedestal, and the image sensor array based on complementary metal oxide semiconductor is fixed on the second support plate
On.
3. according to claim 2 for obtaining the bar code reading engine of image data, it is characterised in that:
First support plate is connect with the second support plate by board to board connector.
4. according to claim 3 for obtaining the bar code reading engine of image data, it is characterised in that: the illumination light
Source and aiming light source are based on the ipsilateral or heteropleural of the imaging sensor of complementary metal oxide semiconductor.
5. according to any one of claims 1-4 for obtaining the bar code reading engine of image data, it is characterised in that:
The wavelength of the lighting source is 380-70nm.
6. according to any one of claims 1-4 for obtaining the bar code reading engine of image data, it is characterised in that:
The angle of divergence for aiming at light source is greater than or equal to 15 °.
7. according to any one of claims 1-4 for obtaining the bar code reading engine of image data, it is characterised in that:
First support plate, the second support plate are flexible circuit board or hard circuit board.
8. according to claim 5 for obtaining the bar code reading engine of image data, it is characterised in that: the illumination light
Source is one or more light emitting diodes.
9. a kind of for obtaining the bar code reading engine of image data, it is characterised in that: be based on complementary metal oxide including one
The image sensor array of semiconductor, decoding chip, aims at light source, lighting source and global electronic shutter at MIPI bridging chip
Control circuit；
The global electronic shutter control circuit is electrically connected with the image sensor array based on complementary metal oxide semiconductor,
Send a control signal to image sensor array；
The decoding chip passes through MIPI bridging chip and the image sensor array electricity based on complementary metal oxide semiconductor
Connection, obtains the image data of image sensor array；
The decoding chip is also electrically connected with aiming light source, lighting source, global electronic shutter control circuit；
MIPI bridging chip is connected on D-PHY M-PHY physical layer by MIPI interface, and D-PHY is synchronous using 1 pair of source
Differential clocks and 1~4 pair of differential data line carry out data transmission, the data transmission of D-PHY uses DDR mode, D-PHY's
Physical layer supports HS mode and LP mode, and Low Voltage Differential Signal is used under HS mode, uses single-ended signal under LP mode.
10. according to claim 9 for obtaining the bar code reading engine of image data, it is characterised in that: the bar code
Reading engine further includes a manual trigger circuit, and the manual trigger circuit includes control button and control circuit, the control
By key connection control circuit, the control circuit and decoding chip；After the control button of the manual trigger circuit is depressed,
The bar code reading engine acquires image data, and sends image data to decoder module.
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| CN108416239B (en) * | 2018-01-31 | 2019-10-11 | 深圳盈达信息科技有限公司 | A kind of bar code identifies the control method of engine and its reduction power consumption |
| CN108416238B (en) * | 2018-01-31 | 2021-04-13 | 深圳盈达信息科技有限公司 | Laser scanning module and method for shielding laser interference |
| WO2019169515A1 (en) * | 2018-03-04 | 2019-09-12 | 深圳盈达信息科技有限公司 | Barcode recognition engine and power consumption reduction control method therefor |
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