CN2556729Y - Scanner capable of eliminating interference - Google Patents
Scanner capable of eliminating interference Download PDFInfo
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- CN2556729Y CN2556729Y CN 02271664 CN02271664U CN2556729Y CN 2556729 Y CN2556729 Y CN 2556729Y CN 02271664 CN02271664 CN 02271664 CN 02271664 U CN02271664 U CN 02271664U CN 2556729 Y CN2556729 Y CN 2556729Y
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Abstract
The utility model relates to a scanner with the ability to eliminate interferences, can reach the aim of effectively getting rid of interferences of anti-counterfeiting reticulated patterns or other anti-counterfeiting marks by improving a light source of an optical image sensor, can effectively manifest invisible anti-counterfeiting marks by scanning, or can lead information to be easily identified and preserved by choosing to acquire certain image information from scanned objects. The scanner comprises a control module (10), a memory module (20), an optical image sensor module (30), a motor and a drive module (50) of the motor, wherein, the optical image sensor module (30) comprises at least one visible-light luminescent diode which can be used in an arbitrarily combined way or be used alone in one scanning task, and an infrared luminescent diode or an ultraviolet luminescent diode.
Description
Technical field the utility model relates to a kind of scanner, relates in particular to the improvement of optical imagery scanner light source.
Background technology is along with the development of computer technology and optical image sensor technology, document scanner done more and smaller and more exquisite practicality, increasing people uses scanner in growing field.The business card scanner of Chinese patent ZL 01226070 disclosed a kind of delicate structure for example.On the other hand along with the progress of society, increasing certificate, file are for purposes such as false proof, anti-copys, design false proof reticulate pattern or other anti-fake mark, useful information on these false proof reticulate patterns or anti-fake mark and the certificate (for example name, number, photograph etc.) superposition together, human eye can be distinguished easily.Need the department of registration certificate at some, people wish to use scanner read in, file I.D., passport etc. to have the certificate of false proof reticulate pattern or other anti-fake mark, but existing black and white or color scanner can not be distinguished false proof reticulate pattern or other anti-fake mark and useful information, so also just can not on computers Useful Information be extracted, more be difficult to carry out optical identification, and take too many computer storage resources.Utilize same principle can adopt the light source of different wave length and optical image sensor to select to obtain the scanned character image information that goes up different color.In addition, if certain uses repeatedly, the specification form of acquisition of information, for example the answer sheet, post office of examination or the bank user profile of collecting etc. once wishes to use scanner to extract the information of wherein filling in selectively, will be very beneficial for the identification and the storage of handwritten text message.
The summary of the invention the purpose of this utility model is to provide a kind of scanner of getting rid of interference, can effectively remove the interference of false proof reticulate pattern or other anti-fake mark, extracts useful information, perhaps extracts scanned partial information as required.
The disclosed a kind of scanner of removing scanned anti-fake mark of the utility model, comprise control module, memory module, optical image sensor module, motor and driver module thereof, it is characterized in that at least one visible light emitting diode and the infrared or ultraviolet light-emitting diode that use capable of being combined are arranged in the described optical image sensor module or use separately.Described at least one visible light emitting diode can be redness, green and blue LED.
Light source setting of the present utility model can have two kinds: described at least one visible light emitting diode of the first and light infrared or that ultraviolet light-emitting diode is sent enter lamp guide and by having uniform brightness on the scanned scan line of acting on of lamp guide.It two is that described infrarede emitting diode or ultraviolet light-emitting diode are one to come the light emitting diode matrix of arranging on the scanned scan line direction; The light that described at least one visible light emitting diode or redness, green, blue LED send enters lamp guide by having uniform brightness on the scanned scan line of acting on of lamp guide.
Described optical image sensor module of the present utility model comprises the imageing sensor module, also comprises the optical filter that can filter out ultraviolet light in the described imageing sensor module; The described optical filter that can cross filtering ultraviolet described column lens array and described scanned between or between described column lens array and described image sensor array.
The utility model utilizes infrared light supply or ultraviolet source in optical scanner, the interference that the image that scanning is obtained can effectively be removed false proof reticulate pattern or other anti-fake mark, perhaps effectively manifest sightless anti-fake mark by scanning, perhaps utilize monochromatic source from the scanned image information of selecting to obtain certain color, make information be convenient to identification and preservation.
Description of drawings the utility model comprises following accompanying drawing:
Fig. 1 is the schematic block circuit diagram of optical imagery scanner;
Fig. 2 is a kind of structural representation of flat optical imagery scanner;
Fig. 3 is the structural representation of paper feed type optical imagery scanner;
Fig. 4 is the inner scheme of installation of paper feed type optical imagery scanner;
Fig. 5 is the composition synoptic diagram of imageing sensor of the present utility model;
Fig. 6 is the structural representation of imageing sensor of the present utility model;
Fig. 7 is another structural representation of imageing sensor of the present utility model;
Fig. 8 is a kind of workflow diagram of Certificate scanner.
Embodiment also is described in further detail the utility model in conjunction with the accompanying drawings below by specific embodiment.
As everyone knows, various materials have different reflectivity and absorptivity to the light of different wave length, and the chromatogram of surface color has higher reflectivity to the material between the blueness to infrared light in redness, and black material has higher absorptivity to infrared light.If have on a kind of printed matter chromatogram in redness to the colored reticulate pattern background between the blueness, have simultaneously the Word message of black again, under the infrared light irradiation, just background and Word message can be distinguished and come with imageing sensor scanning.Utilize same principle can adopt the light source of different wave length and optical image sensor to select to obtain the scanned character image information that goes up different color.For example, if certain form adopts green the printing, adopt black pen to fill in again, then scanner uses monochromatic green light source scanning, can extract the information that black pen is filled in, and is very beneficial for the identification and the storage of handwritten text message.
As shown in Figure 1 be the schematic block circuit diagram of optical imagery scanner, comprise control module 10, memory module 20, optical image sensor module 30, interface module 40, motor and driver module 50 thereof and control panel module 60.
Control module 10 is main control chips of scanner, is responsible for and main-machine communication, produces the needed control signal of each module, and the data that the reception imageing sensor transmits are also handled, and are uploaded to host computer then.
Memory module 20 is as the interim storage space of the buffering in the data processing transfer process, and it is very big that this carries out the data volume that treatment conversion, imageing sensor transmit because of main control chip.Memory module also can be deposited the cognizance code of some scanners, as the type of scanner, and rank, version number and manufacturer's ID etc.
Optical image sensor 30, according to the control signal of main control chip select and put in order azarin, green, blue, infrared or ultraviolet lamp tube scans, and passes to main control chip scanning a gained signal.
Interface module 40 is interface circuits, and it is an interface of two-way communication between main control chip and computer.
Motor and driver module 50 thereof can produce enough big driving force by the motor driven paper feed according to four phase input signals of main control chip, perhaps drive optical image sensor 30 scannings.
Control panel module 60 is provided with keying circuit, working station indicator etc., and performance that can the enhanced ct scans instrument makes it more humane, operates more flexibly, uses more convenient.
As an embodiment of the present utility model, be a kind of structural representation of Certificate scanner as shown in Figure 2, comprise loam cake 1, middle cover 2, lower cover 5; Optical image sensor module 3 and moving track and making-up unit are arranged between middle cover 2 and lower cover 5, also have motor 4 and gear train thereof.Shown in Figure 2 is a kind of plate scanner, and those skilled in the art can both understand, and according to principle of the present utility model, also can be designed to paper feeding scanner.
The embodiment of paper feeding scanner of the present utility model sees Fig. 3 and Fig. 4.As shown in Figure 3, paper feeding scanner comprises housing 101, driving and scanister 102 and circuit board 103.Its middle shell 101 comprises loam cake 11 and lower cover 12, and its inner cavity that forms of combination back is provided with certificate inlet 111 on loam cake 11, and the intersection of loam cake 11 and lower cover 12 is located in the certificate outlet.Drive and scanister 102 comprises first support member 211 and second support member 212, also comprise imageing sensor module 3, roll bar 23, CD-ROM drive motor 24, train of reduction gears 25.First support member 211 and second support member 212 are individually fixed in the relative both sides of lower cover 12, on the opposite face of first support member 211 and second support member 212, respectively be provided with driving rod 2111,2121 and pivoted hole 2112,2122, position at the two ends of imageing sensor module 3 with respect to driving rod 2111,2121 respectively is provided with pivoted hole 221, and cooperating between driving rod 2111,2121 and its corresponding pivoted hole 221 makes imageing sensor module 3 be positioned between first support member 211 and second support member 212 and close on the certificate exit; Roll bar 23 two ends relative engagement simultaneously on first support member 211 and second support member 212 in the set pivoted hole 2112,2122, this project organization makes that rolling bar 23 and imageing sensor module 3 is parallel to each other and has certain intervals and be used for scanned passing through.CD-ROM drive motor 24 is assembled on first support member 211, and the train of reduction gears of being made up of gear not of uniform size 25 also is positioned on first support member 211, and train of reduction gears 25 is rolled bar 23 rotations with the transmission of power of CD-ROM drive motor 24 and the rear drive of slowing down.Circuit board 103 is positioned in the lower cover 12, and have with imageing sensor module 3 and CD-ROM drive motor 24 and to be electrically connected, circuit board 103 also connects the interface arrangement 131 that can be used for connecting host computer, this interface arrangement 131 not only can be used as data channel, still be power channel simultaneously, the power supply of CD-ROM drive motor 24 and imageing sensor module 3 is provided by circuit board 103.A side of certificate inlet 111 has infrared window 113 on loam cake 11, under these infrared window 113 positions infrared sensor 132 is arranged, and whether be used for perception has scanned insertion, and utilizes this signal to make scanner prepare scanning.
As shown in Figure 4, in the housing 1 imageing sensor module 3 with roll bar 23 and be close in the certificate outlet, when scanned by loam cake 11 on certificate inlet 111 insert, this is scanned will to enter housing 1 and from imageing sensor module 3 with roll between the bar 23 and pass through, imageing sensor module 3 and roll gap between the bar 23 and make the two sides scanning of a surface of contact image sensor module 3 and the surface of rolling bar 23 simultaneously of certificate.Because the scanned scanning of a surface of imageing sensor module 3 contacts is a shiny surface, so when scanning switch 132 starts CD-ROM drive motor 24 rotations, or when seeing through the external software instruction and start CD-ROM drive motor 24 rotations by interface arrangement 131, roll its surperficial friction force of bar 23 mats and drive scanned scanning of a surface by imageing sensor module 3, and be sent to outlet with scanned, this moment, imageing sensor module 3 was converted to electrical signal transfer to circuit board 103 with scanned optical image, was sent to host computer by coupling arrangement 131 again.Use screw fixing spring holding piece 222 respectively in the two sides of imageing sensor module 3, and the small embossment thing 2113 and 2123 that connects on this spring holding piece 222 and corresponding first support member 211 and second support member 212 with spring 223 respectively; This structure can make imageing sensor module 3 to do the rotation of limited angle around the axis that driving rod 2111,2121 constitutes, and provides certain elastic pressure to make the scanned scanning plane of pressing close to imageing sensor module 3; And can adapt to scanned different-thickness, and utilize the skin-friction force that rolls bar 23 to drive scanned process.
As shown in Figure 5 be the composition synoptic diagram of image sensor module 30 of the present utility model, comprise infrared diode array module 31, primaries source module 32, column lens array module 33, sensor assembly 34, gain and compensation control module 35; Infrared diode array module 31 comprises that one comes and is equivalent to be scanned the infrared light light emitting diode matrix of arranging on the part Width; Primaries source module 32 comprises redness, green, blue three kinds of light emitting diodes, and the light that Tricolor LED sends can make it have uniform brightness by the effect of light pipe on the length that is equivalent to the scanned document width; Column lens array 33 can focus on reflected light or the transmitted light that comes from scanned document on the optical image sensor; Image sensor module 34 receiving optical signals also become electric signal according to its intensity-conversion, and this electric signal is read and send to gain and compensation control module 35 by shift register; Gain and compensation control module 35 are handled sweep signal according to gain and penalty coefficient.
Image sensor module 30 is a specific embodiment of the present utility model as shown in Figure 5, be not to restriction of the present utility model, the person skilled in art can both understand the specific design scheme can be had multiple, for example infrared diode array module 31 also can adopt lamp guide, and primaries source module 32 also can adopt light emitting diode matrix.
The utility model also can be designed to the combination of ultraviolet source and three primary colors light source.
Image sensor module of the present utility model has four kinds of light sources, can in scanning, select to adopt a kind of or multiple light source, for example select three-color light source, infrared source working, perhaps select ultraviolet source scanning, select the monochromatic visible light source to implement scanning according to concrete needs.Image sensor module also can include only a kind of visible light source and infrared or ultraviolet source.
Comprise imageing sensor module 3 in the image sensor module 30, as shown in Figure 6 be the structural representation of imageing sensor module 3 of the present utility model, the length of imageing sensor module 3 is equivalent to be scanned the width of part, walking abreast along its length on its end face is provided with infrared or ultraviolet diode array 301 and three primary colors light source lamp guide 302, between infrared or ultraviolet diode array 301 and three primary colors light source lamp guide 302, be provided with column lens array 33, bottom at imageing sensor module 3, there is image sensor array 304 at 33 places over against column lens array, bottom at imageing sensor module 3, the next door of image sensor array 304 also has printed circuit board (PCB) 309, also schematically shows the position that is scanned part 308 among the figure.
Fig. 7 is another structural representation of imageing sensor module of the present utility model, and the outline of imageing sensor module 3 is a rectangular parallelepiped, and its length is equivalent to be scanned the width of part, comprises glass 371; Lamp guide 372; Light source 373; Lens combination 374; Shell 375; Circuit board 376; Electric connector 378 and metal holder 377; On circuit board 376, also has image sensor array 304 over against lens combination 374 places.Have Red Green Blue light emitting diode and infrarede emitting diode or ultraviolet light-emitting diode in the light source 373; Also can have only a kind of light emitting diode in the light source 373; Have on the end face of lamp guide 372 on the light source 373 and can see through the optical window of various light and closely cooperate, be used for scanning on the glass 371 thereby light that light source 373 sends is radiated at through the even action of lamp guide 372 with lamp guide 372.Lens combination 374 is installed in the shell 375, and the light that is scanned the part reflection shines in lens combination 374 through glass 371, and is converged at image sensor array 304.Image sensor array 304 is converted to electric signal with this light signal, and this electric signal spreads out of by electric connector 378 through the back of the processing such as preposition amplification on the circuit board 376.Metal holder 377 is combined glass 371, shell 375 and circuit board 376 clampings of imageing sensor module 3.
For example on the bank note, have the anti-fake mark with the ultraviolet sensitivity material at some printed matter, this anti-fake mark is sightless under the environment of visible light, but under UV-irradiation, can be inspired visible light, thereby shows anti-fake mark.At this anti-fake mark, an embodiment of the present utility model is, a kind of scanner adopts ultraviolet and visible light source, and lens and scanned between or between lens and image sensor array, have can the mistake filtering ultraviolet optical filter.
The collaborative work under software control of the hardware of scanner is obtained the view data that is scanned part by the scan mode that the user is provided with, so that the user therefrom extracts required useful information.With host apparatus that scanner is connected in have the driver of scanner.As an embodiment of the present utility model, shown in Figure 8 is the workflow synoptic diagram with scanner of four kinds of light sources.
After scanner connects, at first answer initialization scan instrument 782, detect then and whether carried out overcorrect, as denying the correction data 784 that then obtains and preserve three primary colors light source and infrared light supply; After the user asked scanning, scanning operation and writing scan data 786 handled 787 with scan-data by user's request then, and the data after will handling are again submitted to user 788 by the mode of user's request.
In initialization scan instrument 782 steps, finish being connected and the initialization of scanner self of scanner and host computer.
In correction data 784 steps of acquisition and preservation three primary colors light source and infrared light supply, can obtain various correction datas, be used in real image acquisition procedures, going to improve the raw data of image, so that offer the scan-data of user's the best.This is the consistency problem in order to solve different scanners and to be scanned difference on the part, because under the situation of various reality, the signal that image sensing module obtains can not produce identical output to different scanners, and the output reference difference that produces at the difference of full line.In this step, obtain the optimal gain and the compensation of full line from actual signal, and the optimal time shutter of obtaining full line.Under the condition of not having illumination, actual scanning obtains the signal of delegation, and service routine is calculated the gain of full line data.Under the condition of illumination fully, adjust the time shutter, make output reach optimal predetermined value, preserve this time shutter; And under this time shutter, actual scanning obtains the signal of delegation, and service routine is calculated the compensation of full line data.Obtain the optimal gain and the compensation of difference the full line then from actual signal.Under the condition of not having illumination, actual scanning obtains the multirow signal, the gain of each point behind average each line data of service routine calculating.Under the optimal time shutter, actual scanning obtains the multirow signal, the compensation of each point behind average each line data of service routine calculating.
In scanning operation and writing scan data 786 steps, at first carry out hardware setting, the resolution of motor rotary speed, optical image sensor etc. for example is set.After obtaining digital signal, digital signal must be proofreaied and correct according to the gain of proofreading and correct and the data of compensation.Digital signal after this correction (image pixel) can be reappeared the image of scanned document fully.In when operation scanning, according to the user both be provided with can infrared scan and the scanning of three primary colors light source carry out respectively, promptly earlier will be scanned part and sweep one time with infrared light supply, sweep one time with the three primary colors light source again; Also can infrared scan and the scanning of three primary colors light source carry out simultaneously, can also select a kind of light source to work independently and finish being scanned the scanning of part.
In that scan-data is handled by user's request in 787 steps, scan-data can be organized into piece image, perhaps be organized into two width of cloth images that contain different information respectively.
Data after will handling are submitted in user's 788 steps by the mode of user's request, and the data that scanning is obtained offer the user by the mode that shows, prints or fax.
Claims (9)
1. the scanner that can get rid of interference, comprise control module (10), memory module (20), optical image sensor module (30), motor and driver module (50) thereof, it is characterized in that at least one visible light emitting diode and the infrared or ultraviolet light-emitting diode that can be used singly or in combination are arranged in the described optical image sensor module (30).
2. the scanner of getting rid of interference according to claim 1, it is characterized in that described at least one visible light emitting diode and light infrared or that ultraviolet light-emitting diode is sent enter lamp guide and by having uniform brightness on the scanned scan line of acting on of lamp guide.
3. the scanner of getting rid of interference according to claim 1 is characterized in that, described infrarede emitting diode or ultraviolet light-emitting diode are one to come the light emitting diode matrix of arranging on the scanned scan line direction; The light that described at least one visible light emitting diode sends enters lamp guide and by having uniform brightness on the scanned scan line of acting on of lamp guide.
4. the scanner of getting rid of interference according to claim 1 is characterized in that, described at least one visible light emitting diode is redness, green and blue LED.
5. according to claim 1, the 2 or 4 described scanners of getting rid of interference, it is characterized in that, described optical image sensor module (30) comprises imageing sensor module (3), and this imageing sensor module (3) comprises infrared or ultraviolet diode array (301), lamp guide (302), column lens array (33), image sensor array (304) and printed circuit board (PCB) (309); Described infrared or ultraviolet diode array (301), lamp guide (302) and column lens array (33) on end face parallel side by side, described column lens array (33) is positioned between described infrared or ultraviolet diode array (301) and the described lamp guide (302); Described image sensor array (304) is positioned at the bottom with respect to end face of described imageing sensor module (3), over against described column lens array (33); Described printed circuit board (PCB) (309) is positioned at the bottom with respect to end face of described imageing sensor module (3), the next door of described image sensor array (304).
According to claim 1,2 or 3 described get rid of interference scanner, it is characterized in that, described optical image sensor module (30) comprises imageing sensor module (3), and this imageing sensor module (3) comprises glass (371), lamp guide (372), light source (373), lens combination (374), circuit board (376), electric connector (378) and image sensor array (304); Have at least one visible light emitting diode and infrarede emitting diode or ultraviolet light-emitting diode in the described light source (373); Described light source (373) have on the end face of described lamp guide (372) optical window that can see through various light and with lamp guide (372) wringing fit, the light that described light source (373) sends is radiated on the described glass (371) through the even action of described lamp guide (372); The light of scanned reflection shines in lens combination (374) through glass (371), and is converged at described image sensor array (304), and described image sensor array (304) is positioned at circuit board (376) and upward locates over against lens combination (374); Described image sensor array (304) is converted to electric signal also through spreading out of by electric connector (378) after the preposition processing and amplifying on the circuit board (376) with this light signal.
7. the scanner of getting rid of interference according to claim 5 is characterized in that, also comprises the optical filter that can filter out ultraviolet light in the described imageing sensor module (3); The described optical filter that can cross filtering ultraviolet be positioned at described column lens array (33) and described scanned between or be positioned between described column lens array (33) and the described image sensor array (304).
8. the scanner of getting rid of interference according to claim 6 is characterized in that, also comprises the optical filter that can filter out ultraviolet light in the described imageing sensor module (3); The described optical filter that can filter out ultraviolet light be positioned at described lens combination (374) and described scanned between or be positioned between described lens combination (374) and the described image sensor array (304).
9. the scanner of getting rid of interference according to claim 5, it is characterized in that, the two sides of described imageing sensor module (3) are the fixing spring holding piece (222) of useful screw respectively, and this two springs holding piece (222) is respectively between the small embossment thing (2113) on its corresponding first support member (211) and connect with spring (223) between the small embossment thing (2123) on second support member (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02271664 CN2556729Y (en) | 2002-07-09 | 2002-07-09 | Scanner capable of eliminating interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02271664 CN2556729Y (en) | 2002-07-09 | 2002-07-09 | Scanner capable of eliminating interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556729Y true CN2556729Y (en) | 2003-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02271664 Expired - Lifetime CN2556729Y (en) | 2002-07-09 | 2002-07-09 | Scanner capable of eliminating interference |
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| Country | Link |
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| CN (1) | CN2556729Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564580A (en) * | 2012-02-24 | 2012-07-11 | 天津大学 | Device for improving sensitivity of image sensor and applying forming light |
| CN104036588A (en) * | 2014-05-23 | 2014-09-10 | 昆山古鳌电子机械有限公司 | Cash automatic transaction device for identifying sorts of paper currencies |
| CN110053930A (en) * | 2019-05-16 | 2019-07-26 | 河北威拓信息技术有限公司 | Bottle body label scanners |
| CN111417525A (en) * | 2017-12-01 | 2020-07-14 | 惠普发展公司，有限责任合伙企业 | Adaptive sampling |
-
2002
- 2002-07-09 CN CN 02271664 patent/CN2556729Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564580A (en) * | 2012-02-24 | 2012-07-11 | 天津大学 | Device for improving sensitivity of image sensor and applying forming light |
| CN104036588A (en) * | 2014-05-23 | 2014-09-10 | 昆山古鳌电子机械有限公司 | Cash automatic transaction device for identifying sorts of paper currencies |
| CN111417525A (en) * | 2017-12-01 | 2020-07-14 | 惠普发展公司，有限责任合伙企业 | Adaptive sampling |
| CN110053930A (en) * | 2019-05-16 | 2019-07-26 | 河北威拓信息技术有限公司 | Bottle body label scanners |
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