CN101127089A - Implement method for embedding large amount of information on printing media - Google Patents
Implement method for embedding large amount of information on printing media Download PDFInfo
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- CN101127089A CN101127089A CNA2007100577983A CN200710057798A CN101127089A CN 101127089 A CN101127089 A CN 101127089A CN A2007100577983 A CNA2007100577983 A CN A2007100577983A CN 200710057798 A CN200710057798 A CN 200710057798A CN 101127089 A CN101127089 A CN 101127089A
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Abstract
The utility model relates a new implementation method for embedding large amount of information into the print media, belonging to the information processing field. The utility model provides a new composing method for marking screen coding with self-location function aiming to the information embedding method of print media. The novel marking screen coding adopts various geometry distribution comprising the lattice point displacement, the lattice point direction and the lattice point shape to record information directly, or various physics distribution comprising the phase modulation of two-dimensional spatial image and the propagation direction of lattice points to record information directly, and the segmentation method of the screen lattice points. The utility model has the advantages of uniform gray level of the lattice points and small size of lattice points, and is beneficial for code identification, besides, the influence on the image quality after information embedding is small and the information capacity is large, in addition, the utility model can rotate arbitrarily within 360 degrees, and is suitable for the information embedding of all printing images.
Description
Technical field
The invention belongs to field of information processing, the especially a kind of implementation method that can on print media, imbed the system of bulk information.
Background technology
In recent years, computer technology develops rapidly, and the medium as the data message record develop into light medium medium, memory medium etc. by initial magnetic medium medium.But the medium of common paper as the mass data storage are but seldom mentioned.
In addition, as a kind of easy method of supermarket clearing, the motion that proposed the one dimension bar code by U.S. Hough university in 1932 is widely used so far at first.The latter stage eighties, for satisfying the demand that industries such as jewel, semiconductor, pharmacy, Machinery Ministry product should be able to write down more information, developed Code49 by American I ntermec company in 1989, from then on two-dimensional bar code has been born.DataMatrix after this, MaxiCode, ArrayTag etc. come on stage in succession, have also developed CPCode in Japan, QRCode, and be put into international standard.
But two-dimensional bar code is to generate on the basis of bar code, therefore be difficult to jump out the limitation of bar code, the motion of at first all two-dimensional bar codes is still adopted black region is represented message code " 1 ", white portion is represented message code " 0 ", do not consider to utilize graphic change to represent that directly a complete message code is (as 0～9 and, A～F), cause the tediously long of information representation.Secondly, two-dimensional bar code equally must occur separately with bar code, has taken the space, and has been easy to be replicated poor stability.Moreover the correct deciphering that paper pollutes two-dimensional bar code is fatal problem.
Along with printing device, the scanning device precision improves constantly, and the hardware device condition ratio when two-dimensional bar code occurs before 15 years has together had very great development, and the high-precision printer of 1200dpi, 2400dpi, scanner be nothing to be surprised at.So in the banking and insurance business field, proposed on paper, to carry out mass data record and the meticulousr requirement of lettering.Particularly in Japanese financial industry, the data of computing machine regulation legally must be printed on the paper takes care of.At present because of not storing data on the paper, so also need to back up with hard disk.These information if can directly store on paper, no longer back up with hard disk, will be safer, convenient.Such demand obviously realizes it being the comparison difficulty with 2D bar code technology.
Current, along with popularizing of duplicating machine, printed text is by bootlegging, and the personal information losing issue has become the social concern that must solve.But, and add in the file and anti-ly duplicate code in case illegal the duplicating received sizable concern to the how encryption and decryption as e-file of the file of printing.Is indeterminable with two-dimensional bar code because of above-mentioned problem at such demand, and people urgently wish to obtain the method that the content of printing can be represented with the form of data code.
Have again, method with the identification of OCR literal, the Word message that is printed on the paper is read in database, such gimmick obtains sizable concern and expectation for the moment, yet in developing for a long time, it has been recognized that more than the quantity of Chinese character, will reach 100% degree as the precision of OCR literal identification and can realize hardly, so usage range is very little.
Recently, be that the research of Digital Watermarking Theory of core is very in vogue particularly with the researcher of the U.S., there is a large amount of papers to be delivered.But the overwhelming majority is for solving anti-duplicating or anti-tamper etc. safety problem, only is to imbed specific mark or figure at a certain image.As the representational achievement of Japan, " utilize digital watermarking to realize the recognition technology of distorting of printed text " and delivered [the open 2003-209676 of special permission], be not discussed in the printed matter and a large amount of computer data codes are directly imbedded, moreover this technical finesse coloured image is just more difficult.The Steganography technology of " the imbedding invisible data message in printed images " that takes a step forward than digital watermark technology is just delivered [the open 2004-96405 of special permission].But similar with digital watermark technology basically, owing to be that therefore, the quantity of information of imbedding is fewer, can only imbed 12 line number words now in the processing of printing before the screen.
Recently, in day inventor wood and Teng Jing proposed about " the personally identifiable information system that is formed by personally identifiable information's generating apparatus and personally identifiable information's reading device " [patent publication No.: the open 2000-79782 of special permission].Promptly at the background of my photo such as personal identity card, with " specific ID " of different screen forms as me.This on the purpose of solution and aspect such as the gimmick that realizes with at the paper record and to read the mass data information gap very far away.
By being entitled as that famous O commercial firm of Japanese Optical Co., Ltd delivers: " be used for the printed matter [Wai Guo Language that has the sound code of foreign language session and can the utilization of Words To may な sound sound コ one De pay I printed article (the open 2002-82601 of special permission)] ".This patent proposes in the literal of first kind of language of printing, sound code with the pronunciation of second kind of language of this literal, be transformed into the similar miniature two-dimensional bar code that is called as DotCode, and be printed on literal near, when reading DotCode, the pronunciation of second kind of language of this literal can be played back with method of optics.At first, need take very big space as the printing of the DotCode code of the irregular distribution of recording voice, dot matrix maldistribution at random the quality of printed picture, and DotCode needs common location dot matrix, any direction read the comparison difficulty.
Above-mentioned patent does not all relate to solution and imbed information in a large number on print media, and does not reduce the problem of printing quality.
Summary of the invention
First purpose of the present invention is at imbedding information in a large number on print media, solves printing equipments such as printer integral machine at low resolution when the information of carrying out the shading mode is imbedded, and the dot matrix number of screen site can not too big problem.Otherwise influence the quality of printed images.
Second purpose of the present invention is at imbedding information in a large number on print media, can arbitrarily angled down, the constructive method and the information of Shi Bie sign half-tone screen code are imbedded method quickly and accurately.
The present invention is directed to above-mentioned purpose solves its technical matters and takes following technical scheme to realize:
The implementation method that can on print media, imbed the system of bulk information that this is new, it is characterized in that: this system has by intercepting and capturing printed images unit 100, data-reading unit 200, code conversion unit 300, information imbeds unit 400 and printing output unit 500 is formed; Intercept and capture printed images unit 100, intercept and capture the literal that comprises that will print by the driver of printer, mark, figure, image be in interior printable data, or directly read and comprise literal, mark, and figure, image is in interior printable data; Data-reading unit 200 reads the literal that comprises that will imbed, mark, and figure, image can be by the data of computer generation representation at interior; Code conversion unit 300, with above-mentioned read will imbed comprise literal, mark, figure, image can be become optical readable screen site fotmat code by the data conversion of computer generation representation at interior; Information is imbedded unit 400, optical readable screen site fotmat code after the above-mentioned data conversion is arranged at regular intervals the printed images of the shading form of Two dimensional Distribution, the printed images that intercepts with intercepting and capturing printed images unit overlaps again, constitute the printed images of the information of imbedding, printed images is avoided the employed color of optical readable screen site fotmat code automatically, or avoids the employed color of optical readable screen site fotmat code automatically near the fotmat code of optical readable screen site; Printing output unit 500 will be imbedded the printed images printout of information, or output plate making data are for common printed machine plate making; The formation of above-mentioned optical readable screen site fotmat code is to consider the characteristic of structural property with the printing screen of optical readable code simultaneously, and the structural property of the optical readable code characteristic with the printing screen combined, constitute the means of sign property half-tone screen code.
And the characteristic of screen is printed in above-mentioned consideration, or refers to will form according to Rayleigh criterion the minimized in size of the site of printing screen; When the low for example 600dpi of the ratio of precision of the printing equipment that comprises the printer integral machine, the site dot matrix of sign property half-tone screen code is divided into the means of a plurality of screens site, constitutes the means of more than one half-tone screen code message code numerical value by a plurality of screens site; When the higher for example 2400dpi of the ratio of precision of the printing equipment that comprises the printer integral machine, be the means that a plurality of sign half-tone screen codes are merged into the sign half-tone screen code of a screen site with a plurality of message codes.
And a plurality of screens site constitutes each networking screen coding of more than one half-tone screen code message code numerical value, or the form means of the half-tone screen code message code of the screen site in representing to belong to mutually on the same group with the difference of the orientation of screen site.
And the characteristic of above-mentioned consideration printing screen, or refer to comprise the dot matrix number that adopts identical screen site constitutes the means of printing screen of the poster edge of even gray scale; The gray-scale value of screen site minimizes, i.e. the minimized means of site dot matrix number of sign property half-tone screen code; The spacing of the screen site arranged evenly of the sign half-tone screen code of expression screen site greater than the means of the size of self size of site in interior one or more or whole means.
And, the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or the dot matrix number that comprises the site of sign property half-tone screen code is identical means, the number and the different means of locative location dot matrix number of dot matrix of expression code information, locative location dot matrix are to be in means on the given fixed position at interior one or more or whole geometric form meanses.
And, the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise that the diverse location with the dot matrix of sign property half-tone screen code distributes, different directions distributes, and difformity distributes and represents that different message codes are at interior one or more or whole geometric form meanses.
And, the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise the phase modulation (PM) of dot matrix in two-dimensional space of sign property half-tone screen code, or the different distributions of the direction of propagation in two-dimensional space and the numerical value of representing message code are at interior one or more or whole physical form meanses.
Description of drawings
Fig. 1 is a kind of synoptic diagram that can imbed the system of bulk information on print media of the present invention;
Fig. 2 is that screen site dot matrix number that the present invention proposes is the synoptic diagram of 3 sign half-tone screen code;
Fig. 3 is the synoptic diagram that the dot matrix of screen site is carried out the space phase modulation;
Fig. 4 is the synoptic diagram that sign property half-tone screen code can be cut apart;
The two-dimensional bar code traditionally of Fig. 5 design sketch overlapping of lining up with printed images;
Fig. 6 is sign half-tone screen code and the overlapping design sketch of printed images that present embodiment provides;
Fig. 7 is the synoptic diagram that is made of sets of computer data a plurality of sign half-tone screen codes;
Fig. 8 is that the dot matrix number of screen site is the synoptic diagram of another example of 3 sign half-tone screen code;
Fig. 9 is that screen site dot matrix number that the present invention proposes is the synoptic diagram of 2 sign half-tone screen code;
Figure 10 is that the screen dot matrix can be with the synoptic diagram of the physical arrangement recorded information of the different directions of propagation;
Figure 11 is that this screen site dot matrix number is the synoptic diagram that 2 sign half-tone screen code constitutes sets of computer data;
Figure 12 is that screen site dot matrix number that the present invention proposes is the synoptic diagram of 4 sign half-tone screen code;
Figure 13 is the synoptic diagram that sign property half-tone screen code information is imbedded;
In the accompanying drawing:
The 100th, intercept and capture the printed data elementary area;
The 200th, data-reading unit;
The 300th, the code conversion unit;
The 400th, information is imbedded the unit;
The 500th, the printing output unit
201 expression location dot matrix;
202 expression location dot matrix;
203 expression information dot matrix;
301 is x=0, y=0;
302 is x=-3, y=3;
303 is x=0, y=3;
304 is x=3, y=3;
305 is x=-0, y=5;
306 is x=-3, y=5;
307 is x=3, y=5;
701 expression codes " 0 ";
702 expression codes " 2 ";
703 expression codes " 1 ";
704 expression codes " 3 ";
801 expression location dot matrix;
802 expression location dot matrix;
803 expression information dot matrix;
901 expression information dot matrix;
902 expression information dot matrix;
1001 expression information dot matrix;
1002 expression information dot matrix;
1101 expression message codes " 0 ";
1102 expression message codes " 1 ";
1103 expression message codes " 2 ";
1104 expression message codes " 0 ";
1105 expression message codes " 1 ";
1106 expression message codes " 2 ";
The location dot matrix of 1107 expression directions;
The location dot matrix of 1108 expression directions;
The location dot matrix of 1109 expression directions;
1201 expression message codes " 0 ";
1202 expression message codes " 1 ";
1203 expression message codes " 2 ";
1204 expression message codes " 3 ";
1205 expression message codes " 4 ";
1206 expression message codes " 5 ";
1207 expression message codes " 6 ";
1208 expression message codes " 7 ";
The printed images that 1301 expressions are intercepted and captured;
The printed images of 1302 expression shading forms;
The printed images of bulk information has been imbedded in 1303 expressions;
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described, but embodiment of the present invention is illustrative, rather than determinate.
The present invention is at first at the positional information that comprises printed images, and sequence information, content information propose the novel code of description method in the information of the interior printed images described feature.
Below in the present embodiment, described pixel is the least unit of composing images, the site is the pairing screen least unit of pixel with the least unit of composing images, and the dot matrix number of site is the sum of point that constitutes the dot matrix least unit of arranging by certain rule of site.The least unit " printing points " that point can be printed by printing equipment is formed, but half-tone screen code is the screen site of recall info.
The definition of the novel sign half-tone screen code described in the present invention: independently existing with certain code form, is a kind of code form of imbedding at the printed images information of carrying out that constitutes the least unit of screen.
Sign property half-tone screen code is different from bar shaped half-tone screen code and two-dimentional half-tone screen code, the former is a self-existent code, bar codes or two-dimensional bar code as a large amount of uses at present all belong to sign property code, as long as this code is identified, just can carry out an operation.And the latter just carries out an operation after entire image or whole page or leaf printed matter are discerned.Both are very approaching again aspect a lot, and sign property half-tone screen code also can be the same with bar shaped half-tone screen code and two-dimentional half-tone screen code, can be used for imbedding at the bulk information of printed medium.
The important sign that sign property half-tone screen code is different from two-dimensional bar code is: sign property half-tone screen code is with the node record information of printing screen, can be printed on the printed images, to reach together with image co-registration, i.e. the effect that the information of carrying out is imbedded under the prerequisite that the quality of image can not reduce.Sign property half-tone screen code has the effect that can constitute the printing screen.
The definition of location dot matrix, with a kind of spread pattern that is different from the information dot matrix, when distortion appearred in print media, the dot matrix that is printed on each lattice position of sign half-tone screen code on the print media as quantification was called the location dot matrix.
Fig. 2 is that to adopt the dot matrix number be the example of 3 sign half-tone screen code to the present embodiment.As shown in Figure 2: 201 and 202 dot matrix is the location dot matrix.203 is the information dot matrix.The network point distribution of a form can be represented code " 0 " among Fig. 2, the network point distribution of b form can be represented code " 1 ", the network point distribution of c form can be represented code " 2 ", the network point distribution of d form can be represented code " 3 ", the network point distribution of e form can be represented code " 4 ", and f and g represent two special codes.The change of the position relation of information dot matrix 203 and location dot matrix, the different code value of decision message code that is to say that the different geometric arrangement that comprises the position of the dot matrix by changing the screen site can be represented the code value that sign property half-tone screen code is different.
For example Fig. 3 is such, the dot matrix number that the present embodiment proposes is the example of 3 sign half-tone screen code, also can regard the method that comprises that employing is carried out the space phase modulation with the dot matrix of screen site as, according to the space bit phase change of the dot matrix of screen site in interior physical method logger computer information.As shown in Figure 3,301 is x=0, y=0; 302 is x=-3, y=3; 303 is x=0, y=3; 304 is x=3, y=3; 305 is x=-0, y=5; 306 is x=-3, y=5; 307 is x=3, y=5.
The sign half-tone screen code that Fig. 2 provides can be regarded as shown in Figure 4: a big sign half-tone screen code is divided into the result behind several little sign half-tone screen codes.When the printing equipment ratio of precision higher, when for example resolution is 2400dpi, can adopt the big sign half-tone screen code code in Fig. 4 left side, site as the shading screen, though the dot matrix number of site is many, but because of printing precision than higher, so the size of site is smaller, little to the influence of printed images.When the printing equipment ratio of precision is low, when for example resolution is 600dpi, can adopt the little sign half-tone screen code code in Fig. 4 the right, site as the shading screen, because the information of little sign half-tone screen code code record is fewer, can consider to constitute a message code value by a plurality of little sign half-tone screen code codes.
Realization can soniferous books as a kind of form of multimedia printing, adopt invisible 2D bar code technology as shown in Figure 5 traditionally, are about to very little two-dimensional bar code and line up overlapping with printed images.This method does not consider to print the effect of screen, even the therefore form of peer code, the quality of the effect printed images after information is imbedded seriously is affected.
The optical readable code that the present embodiment adopts is sign property half-tone screen code, as shown in Figure 6: because of sign property half-tone screen code is the least unit of printing screen, sign property half-tone screen code is lined up and is constituted the homogeneous gray-scale value, and has the minimized shading of gray-scale value again, this homogeneous gray-scale value have the overlapping effect of can realization information imbedding of the minimized shading of gray-scale value and printed images again, do not cause print image quality to be damaged simultaneously.
Fig. 7 is the example that is made of sets of computer data a plurality of sign half-tone screen codes as shown in Figure 2.As shown in Figure 7: sign property half-tone screen code 701 be vertical with 702 location dot matrix, and sign property half-tone screen code 703 and 704 location dot matrix are horizontal.701 half-tone screen codes are represented code " 0 ", and 703 half-tone screen codes are represented code " 1 ", and 702 half-tone screen codes are represented code " 2 ", and 704 half-tone screen codes are represented code " 3 ".Sign property half-tone screen code 701,702,702,704 can be represented 4 independently message codes.Each sign property half-tone screen code can be represented 5 different codes among Fig. 2, therefore 625 different codes of 4 code one-tenth capable of being combined.When constituting sets of computer data by a plurality of sign half-tone screen codes, can be by the arrangement of the different directions of each sign property half-tone screen code in the group, realization comprises the determining of sign property half-tone screen code direction, and the sign half-tone screen code that belongs in this group fixes on interior geometry of space or physical judgement really.In addition, can prove that by the arrangement of N sign property half-tone screen code, can write down the data of M byte, wherein N and M are enough big integer, therefore adopt sign property half-tone screen code can imbed a large amount of information equally in printed medium.
Fig. 8 is that the dot matrix number of the screen site that proposes of the present embodiment is another example of 3 sign half-tone screen code.As shown in Figure 8: 801 and 802 dot matrix is the location dot matrix.803 is the information dot matrix, can represent code " 0 " as the network point distribution of a form among Fig. 8, the network point distribution of b form can be represented code " 1 ", the network point distribution of c form can be represented code " 2 ", the network point distribution of d form can be represented code " 3 ", the network point distribution of e form can be represented code " 4 ", and the network point distribution of f form can be represented code " 5 ", and the network point distribution of g form can be represented code " 6 ".Compare with Fig. 2, the recordable quantity of information of this code form has increased by one times degree nearly, and, 4 independently sign property half-tone screen code can be combined into 2401 different codes.Shortcoming is when allowing imageing sensor 360 degree rotations, correctly discerns the sign half-tone screen code of this form, and the direction of anchor point that need be by the sign half-tone screen code around the identification just can obtain correct result.
Fig. 9 is that screen site dot matrix number that the present embodiment proposes is the example of 2 sign half-tone screen code.As shown in Figure 9: the geometric arrangement record information that comprises different directions of dot matrix by 901 and 902.Can represent code " 0 " as the network point distribution of a form among Fig. 9, the network point distribution of b form can be represented code " 1 ", and the network point distribution of c form can be represented code " 2 ", and the network point distribution of d form can be represented the location dot matrix of direction.Compare with Fig. 2, the site dot matrix number of this code form only is 2, and the site gray-scale value has reduced one-level, the quality of the printed images after can raising information imbedding.Shortcoming is that recordable quantity of information has reduced one times.
The dot matrix number of Fig. 9 is 2 sign half-tone screen code, also can regard as shown in figure 10 be with the physical arrangement recorded information that comprises the different directions of propagation of 1002 screen dot matrix by 1001.The network point distribution direction of propagation as a form among Figure 10 is d
1, the network point distribution direction of propagation of b form is d
2, the network point distribution direction of propagation of c form is d
3, the network point distribution direction of propagation of d form is d
4
Figure 11 is that screen site dot matrix number that the present embodiment proposes is the example that 2 sign half-tone screen code constitutes sets of computer data.As shown in figure 11: sign property half- tone screen code 1101,1104 expression message codes " 0 ", 1102,1105 expression message codes " 1 ", 1103,1106 expression message codes " 2 ".Sign property half- tone screen code 1101,1102,1103,1104,1105,1106 is 6 independently message codes, and each sign property half-tone screen code can be represented 3 codings, 729 different codes of one-tenth capable of being combined.Be decided to be dot matrix 1107,1108, the sign half-tone screen code that the direction of 1109 these groups of expression reaches affiliated this group carries out mark.In actual applications, the distribution between also can considering to organize and to organize should be staggered, and when preventing to discern, the mistake of grouping occurs.
Figure 12 is that screen site dot matrix number that the present embodiment proposes is the example of 4 sign half-tone screen code.As shown in figure 12: screen site dot matrix number is 4 o'clock, can be by the spread geometry recorded information of site, for example 1201 represent message codes " 0 ", 1202 expression message codes " 1 ", 1203 expression message codes " 2 ", 1204 expression message codes " 3 ", 1205 expression message codes " 4 ", 1206 expression message codes " 5 ", 1207 expression message codes " 6 ", 1208 expression message codes " 7 ".
Below just provided the dot matrix of code self example as the sign half-tone screen code of location dot matrix, these several half-tone screen codes not only, copy said method, can constitute and comprise 1 dot matrix, 2 dot matrix, 3 dot matrix, 4 dot matrix, and N dot matrix is at interior various sign half-tone screen codes.So long as carry out the information record, all belong within the invention scope of the present embodiment with printing screen site.
Embodiment
Be described in detail the process of the implementation method of the system that can on print media, imbed bulk information below in conjunction with Fig. 1:
This system has by intercepting and capturing printed images unit 100, data-reading unit 200, and code conversion unit 300, information imbeds unit 400 and printing output unit 500 is formed.Concrete operations are as follows:
1. intercept and capture printed images unit 100, when imbedding, adopt the virtual printing technology at the printer integral machine information of carrying out, driver by printer intercept and capture will print comprise literal, mark, figure, image is in interior printable data, the carrier of imbedding as information.When the common printed machine information of carrying out was imbedded, this unit directly read and comprises literal, and mark, figure, image be in interior printable data, the carrier of imbedding as information.
2. data-reading unit 200, read the literal that comprises that will imbed, mark, and figure, image can be by the data of computer generation representation, as the information that is about to be embedded at interior.
3. the code conversion unit 300, with above-mentioned read will imbed comprise literal, mark, figure, image can be become fotmat code both sign property half-tone screen codes in optical readable screen site by the data conversion of computer generation representation at interior.The formation of this optical readable screen site fotmat code is to have considered the characteristic of structural property with the printing screen of optical readable code simultaneously, and the structural property of the optical readable code characteristic with the printing screen combined, constituted the sign half-tone screen code.Here, consider the characteristic of printing screen, be meant the minimized in size that will form the site of printing screen according to Rayleigh criterion; When the low for example 600dpi of the ratio of precision of the printing equipment that comprises the printer integral machine, the site dot matrix of sign property half-tone screen code is divided into the means of a plurality of screens site, constitutes the means of more than one half-tone screen code message code numerical value by a plurality of screens site; When the higher for example 2400dpi of the ratio of precision of the printing equipment that comprises the printer integral machine, a plurality of sign half-tone screen codes are merged into the means of the sign half-tone screen code of a screen site.A plurality of screens site constitutes each networking screen coding of more than one half-tone screen code message code numerical value, or the form means of the half-tone screen code message code of the screen site in representing to belong to mutually on the same group with the difference of the orientation of screen site.The characteristic of above-mentioned consideration printing screen also can refer to comprise the dot matrix number that adopts identical screen site, constitutes the means of printing screen of the poster edge of even gray scale; The gray-scale value of screen site minimizes, i.e. the minimized means of site dot matrix number of sign property half-tone screen code; The spacing of the screen site arranged evenly of the sign half-tone screen code of expression screen site greater than the means of the size of self size of site in interior one or more or whole means.Here, the code of the optical readable screen site form of the structural property of consideration optical readable code is the constructive method of sign property half-tone screen code both, the dot matrix number that is meant the site that comprises sign property half-tone screen code is identical means, the number and the different means of locative location dot matrix number of dot matrix of expression code information, locative location dot matrix are to be in means on the given fixed position at interior one or more or whole geometric form meanses.The code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise that the diverse location with the dot matrix of sign property half-tone screen code distributes, different directions distributes, and difformity distributes and represents that different message codes are at interior one or more or whole geometric form meanses.The code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise the phase modulation (PM) of dot matrix in two-dimensional space of sign property half-tone screen code, or the different distributions of the direction of propagation in two-dimensional space and the numerical value of representing message code are at interior one or more or whole physical form meanses.
4. information is imbedded unit 400, as shown in figure 13; Optical readable screen site fotmat code after the above-mentioned data conversion is arranged at regular intervals the printed images 1302 of the shading form with printing screen characteristic of Two dimensional Distribution, the printed images 1301 that intercepts with intercepting and capturing printed images unit overlaps again, constitutes the printed images 1303 of the information of imbedding.Printed images should be avoided the employed color of optical readable screen site fotmat code automatically, or avoids the employed color of optical readable screen site fotmat code automatically near the fotmat code of optical readable screen site.
5. printing output unit 500 will be imbedded the printed images printout of information, or output plate making data are for common printed machine plate making;
Below just provided example application of the implementation method of a system that can on print media, imbed bulk information.In fact, can carry out the system design of wide range of forms with reference to above-mentioned example, whatsoever the system of sample constitutes, as long as comprised that above-mentioned to imbed bulk information on the print media essential by intercepting and capturing printed images unit 100 in order to be implemented in, data-reading unit 200, code conversion unit 300, information are imbedded unit 400 and printing output unit and are formed 500 and all belong within the scope of authority of the present invention in part or all interior content.
Advantageous effect of the present invention is:
The present invention propose one can print media imbed bulk information system not only can Realize on the common printing machine, also can be in normal printer, realization information on duplicator or the integral machine Imbed, and the capacity that information is imbedded information is big, can be on arbitrarily angled reading information.
2. the identification half-tone screen code that can imbed at print media bulk information proposing of the present invention Dot matrix quantity is few, and the site diameter is little, uniform gray level, and easily identification is suitable for any black and white or colored seal The information of map brushing picture is imbedded, and the quality that is embedded to image in the printing images can obviously not descend.
Claims (7)
1. the new implementation method that can on print media, imbed the system of bulk information, it is characterized in that: this system has by intercepting and capturing printed images unit (100), data-reading unit (200), code conversion unit (300), information imbed unit (400) and printing output unit (500) is formed; Intercept and capture printed images unit (100), intercept and capture the literal that comprises that will print by the driver of printer, mark, figure, image be in interior printable data, or directly read and comprise literal, mark, and figure, image is in interior printable data; Data-reading unit (200) reads the literal that comprises that will imbed, mark, and figure, image can be by the data of computer generation representation at interior; Code conversion unit (300), with above-mentioned read will imbed comprise literal, mark, figure, image can be become optical readable screen site fotmat code by the data conversion of computer generation representation at interior; Information is imbedded unit (400), optical readable screen site fotmat code after the above-mentioned data conversion is arranged at regular intervals the printed images of the shading form of Two dimensional Distribution, the printed images that intercepts with intercepting and capturing printed images unit overlaps again, constitute the printed images of the information of imbedding, printed images is avoided the employed color of optical readable screen site fotmat code automatically, or avoids the employed color of optical readable screen site fotmat code automatically near the fotmat code of optical readable screen site; Printing output unit (500) will be imbedded the printed images printout of information, or output plate making data are for common printed machine plate making; The formation of above-mentioned optical readable screen site fotmat code is to consider the characteristic of structural property with the printing screen of optical readable code simultaneously, and the structural property of the optical readable code characteristic with the printing screen combined, constitute the means of sign property half-tone screen code.
2. a kind of new implementation method that can on print media, imbed the system of bulk information according to claim 1, it is characterized in that: the characteristic of screen is printed in above-mentioned consideration, or refers to will form according to Rayleigh criterion the minimized in size of the site of printing screen; When the ratio of precision of the printing equipment that comprises the printer integral machine is hanged down, the site dot matrix of sign property half-tone screen code is divided into the means of a plurality of screens site, constitutes the means of more than one half-tone screen code message code numerical value by a plurality of screens site; When the ratio of precision of the printing equipment that comprises the printer integral machine is higher, be the means that a plurality of sign half-tone screen codes are merged into the sign half-tone screen code of a screen site with a plurality of message codes.
3. according to claim 1, the 2 described a kind of new implementation methods that can on print media, imbed the system of bulk information, it is characterized in that: a plurality of screens site constitutes each networking screen coding of more than one half-tone screen code message code numerical value, or the form means of the half-tone screen code message code of the screen site in representing to belong to mutually on the same group with the difference of the orientation of screen site.
4. according to claim 1, the 2 described a kind of new implementation methods that can on print media, imbed the system of bulk information, it is characterized in that: the characteristic of above-mentioned consideration printing screen, or refer to comprise the dot matrix number that adopts identical screen site, constitute the means of printing screen of the poster edge of even gray scale; The gray-scale value of screen site minimizes, i.e. the minimized means of site dot matrix number of sign property half-tone screen code; The spacing of the screen site arranged evenly of the sign half-tone screen code of expression screen site greater than the means of the size of self size of site in interior one or more or whole means.
5. a kind of new implementation method that can on print media, imbed the system of bulk information according to claim 1, it is characterized in that: the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or the dot matrix number that comprises the site of sign property half-tone screen code is identical means, the number and the different means of locative location dot matrix number of dot matrix of expression code information, locative location dot matrix are to be in means on the given fixed position at interior one or more or whole geometric form meanses.
6. according to claim 1, the 5 described a kind of new implementation methods that can on print media, imbed the system of bulk information, it is characterized in that: the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise that the diverse location with the dot matrix of sign property half-tone screen code distributes, different directions distributes, and difformity distributes and represents that different message codes are at interior one or more or whole geometric form meanses.
7. according to claim 1, the 5 described a kind of new implementation methods that can on print media, imbed the system of bulk information, it is characterized in that: the code of the optical readable screen site form of the structural property of above-mentioned consideration optical readable code i.e. the constructive method of sign property half-tone screen code, or comprise the phase modulation (PM) of dot matrix in two-dimensional space of sign property half-tone screen code, or the different distributions of the direction of propagation in two-dimensional space and the numerical value of representing message code are at interior one or more or whole physical form meanses.
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