CN102004929A - Method for embedding and identifying information in print image - Google Patents

Abstract

A method for embedding and identifying information in a print image is disclosed, which includes following steps: inputting an image information data and an additional information; converting the additional information to a screen code module group of an identifiable geometry or physics information buried-in code; constituting a shading image data by the information module group; and outputting in superposing of the input image data and the shading image data or only outputting of the shading image data. The method has the advantage that the conventional low precision printer realizes a high efficiency for information burying; additionally, the components of the information module fully considers the print screen characteristic, thus the quality of the print image with buried-in information is not destroyed.

Description

Information is imbedded method and information identifying method

Technical field

The invention relates to information flush mounting, information recognition device, information imbeds method, information identifying method, information and imbeds the invention that program, information recognition program and information are imbedded print media.

Background technology

In recent years, be accompanied by the develop rapidly of paper medium publication,, also change to the SD card from tape, CD-ROM as carrier to electronic publishing.Though the quantity that the paper medium is published day by day reduces, the paper medium publication that is celebrated with advantages such as intuitive, evidence, cheapnesss can not thoroughly do away with.Be accompanied by the development of publishing business and the development of recording medium, promoted technology flourish of the information of on print media, imbedding greatly, a kind of technology that the publication of paper medium is combined with electronic publishing is received great concern, can conclude that the multimedia printing technology of representing this trend will be to make printing industry produce the gordian technique of another revolution in next century.

Relevant multimedia printing technology, one of representative method is: day the disclosure be entitled as: the patent of " game data input media [ゲ one system デ one タ goes into power apparatus (special permission open 2005-124713)] ".Propose in this invention in the 0.5mm scope, the two-dimensional bar code of 6 * 6 dot matrix to be overlapped, print out the printed article that can realize the reading function with printed images, can use special-purpose playing device to identify the code value of the two-dimensional bar code of 6 * 6 dot matrix then, play out corresponding sound according to the pairing audio files of code value.

Relevant multimedia printing technology, two of representative method is: also disclose in Japan and be entitled as: " with the method [De Star ト パ タ one Application The is gone into out method (International PCT publication number WO2004/084125) with い て feelings Reported] of dot pattern input/output information " reach " become the printing structure of media surface by the printing points formation; printing process; and read method [De Star ト パ タ one Application The printing forms medium face printing Agencies and makes; printing process; and び Reading access method (the open 2007-282272 of special permission)] " this invention proposes to be placed in an information dot matrix of 4 benchmark dot matrix correspondences at foursquare 4 angles, constitute 8 different angles respectively as the riding position of information dot matrix with 4 angle point battle array centers, can write down i.e. 3 bit informations of 8 numerical informations respectively.

In 6 * 6 dot matrix two-dimensional bar codes of said method one, be a method of dwindling the dot matrix size of two-dimension code, because the high problem of the shading gray-scale value of formation is arranged, so concerning printed article, inharmonious sense can occur.In addition, quantity of information is low, the size of dot pattern is bigger than normal, so be difficult to be applied to normal printer.

In said method two disclosed contents, with 4 angle point battle arrays during as the position reference identifying information point of information point, because each information point needs two above benchmark dot matrix at least relatively, therefore still exist the efficient of recorded information low, for example, during information point 4 row * 4 column distributions, 9 row * 9 row sites that then need to distribute are so the low problem of information record efficiency will occur.Up to the present various motions nearly all are that the angle of the recorded information from how is considered, yet out in the cold as the characteristic of most important printing screen in printed images.Such as, the site dimensional characteristic of printing screen, the site interval characteristics of printing screen, the network point distribution characteristic of printing screen etc.Cause these methods after printing, the phenomenons such as stochastic distribution of information site inevitably occur, and influence the quality of printed images.

In addition, in said method, for 4 angle point battle arrays of symmetry, because do not have the directional information of information module, so identification error can take place the rotation recognition device.

The printing interference problem during for usefulness printer prints shading, takes place through regular meeting in above-described classic method, how to address this problem well then not mentioned.

In addition, in method two, because do not consider the characteristic of printing screen, so but just can not provide each information point distribution range and network point distribution correct corresponding result at interval clearly.

Summary of the invention

The purpose of this invention is to provide a kind of at printed images the information record and the information constructive method of imbedding code writes down with information and information is imbedded the recognition methods of code, when this method is imbedded for the low normal printer information of carrying out of use printing precision, information record efficiency height, the area that reads of recognition device minimizes, and the characteristic of considering the printing screen, have the constructive method that does not make the information module group that the printed images image quality of imbedding additional information reduces.

Another technical matters that the present invention will solve is when using normal printer to print shading, and the method for solution is provided for recurrent interference check problem.

For achieving the above object, the technical scheme taked of the present invention provides that a kind of constructive method of imbedding code at the information record and the information of printed images writes down with information and information is imbedded the recognition methods of code.

The implementation method that a kind of information is imbedded is characterized in that being being realized by following step:

Input becomes the view data acquisition step that information is imbedded the view data of object; And the additional information of will the information of carrying out imbedding obtains step;

Additional information is transformed into the half-tone screen code shift step that the possible geometric or physical information of pattern-recognition that possesses printing screen characteristic is simultaneously imbedded the half-tone screen code information module group of code;

Above-mentioned information module group is arranged the shading image data that constitute the shading image data constitute step;

Among output step that the view data of above-mentioned input is overlapped with the shading image data or the step of only exporting the shading image data, the new image data output step that is made of one of them step is that the information of feature is imbedded method at least.

A kind of implementation method of information Recognition is characterized in that being being realized by following step:

Be embedded with a certain position of the printed images of information by the imageing sensor reading of talking pen, read the information of imbedding printed image data read the printed images step;

The code identification step that the possible geometric or physical information of pattern-recognition of printing the screen characteristic is imbedded code value that possesses in the view data is imbedded in identification;

The result of the above-mentioned code value output that identifies is exported step.

The characteristic of described printing screen is meant the site interval characteristics of the interval, site of half-tone screen code more than or equal to the displacement field of half-tone screen code site; Carry out arrangement of AM screen or the arrangement of FM screen, at least a site alignment characteristics in the site alignment characteristics that the modes that the arrangement of the site of described half-tone screen code is rotated by 45 degree are arranged respectively according to the site arrangement of printing precision half-tone screen code.

And the code value of the information module group code value of described identification half-tone screen code is the addition by the half-tone screen code value, or multiplication, the code check that at least a verification mode is carried out in same code verification or the parity check system.

And, the information module group's of described half-tone screen code information imbed method be the shading that constituted of the information module group by half-tone screen code with the method that printed images overlaps, in the gap of printed images, imbed at least a method in the method for information.

And, in the dot pattern of code constitutes, the distribution of its site dot matrix, it is location mode by diverse location, location mode by different directions, by difform location mode, the location mode of the centralization and decentralization of dot matrix, at least a location mode in the location mode of different dot matrix quantity.

And, in the dot pattern of half-tone screen code constitutes, the distribution of its site dot matrix, it is location mode by the out of phase modulation system, different modulating result's location mode, the location mode of different frequency, at least a location mode in the location mode by different direction of transfers.

And, the feature that the described possible geometric or physical information of pattern-recognition that possesses printing screen characteristic is imbedded code is by the 4*4 dot matrix, 4*5, the 5*5 dot matrix, 5*6, the 6*6 dot matrix, the 9*9 dot matrix, promptly horizontally rotate or the various latticed forms of 45 degree rotations in a kind of information module groups of composition constitute.

Effect of the present invention is not only to use common printed machine to carry out the printing that additional information is imbedded printed medium, also can use normal printer to carry out the printing that additional information is imbedded printed medium.In addition, the information embedded halftone screen code of institute's motion reads area and minimizes; Printing interferes the check phenomenon to be controlled in the minimum zone, the robustness height, and recognition speed is fast, and merchandise cost is low, can not make the features of being imbedded such as printed images image quality reduction.

Description of drawings

Fig. 1 represents the formation illustration of information flush mounting;

Fig. 2 represents the formation illustration of information read device;

Fig. 3 represents that net number is the performance illustration of 1 half-tone screen code;

Fig. 4 represents the performance illustration of physical half-tone screen code by phase modulation (PM);

Fig. 5 represents the performance illustration of half-tone screen code information module group form;

Fig. 6 represents fresh information module group's formation performance illustration by phase modulation (PM);

Fig. 7 represents to solve the half-tone screen code performance illustration of interfering the check problem;

Fig. 8 represents to solve the half-tone screen code phase modulation (PM) performance illustration of interfering the check problem;

Fig. 9 represents that the half-tone screen code information module group that can solve interference check problem constitutes illustration;

Figure 10 represents to take place printing and interferes check phenomenon illustration;

Figure 11 does not interfere check phenomenon illustration because printing takes place in the present invention;

Figure 12 represents information flush mounting processing flow chart;

Figure 13 handle of the present invention is imbedded the illustration of the sequence information in zone as the broadcast value;

Figure 14 is of the present invention the illustration of additional information as the coordinate time of print media;

Figure 15 is of the present invention to be embedded to illustration in the document gap to additional information;

Figure 16 represents the processing flow chart of information recognition device;

Figure 17 represents that the electronic loop of information recognition device constitutes illustration;

The imageing sensor section construction illustration of Figure 18 information recognition device;

Figure 19 represents that information imbeds the formation illustration of printed medium;

The structure illustration of the LED display part of Figure 20 information recognition device;

Figure 21 represents the concept map of the application examples of multimedia printed article;

Figure 22 represents the concept map of the Another Application example of multimedia printed article;

The illustration of the another kind of dot pattern of Figure 23;

The illustration of the dot pattern of Figure 24 different directions;

Figure 25 is utilization is made of the information module group of 4*4 dot matrix the feature of the phase modulation recording information of site a example;

Figure 26 is the example with many bits screen coding mode group of the 4*4 dot matrix that rotates 45 degree.

Embodiment

At first term involved in the present invention is carried out following definition:

In the present embodiment, described " pixel " is the least unit of composing images, and " site is and the pairing screen least unit of pixel of the least unit of composing images that " point of site " is the least unit that constitutes the site.The least unit " printing points " that " point of site " can be printed by printing equipment is formed.

Described " geometric information is imbedded code " is meant the distribution of its dot pattern, distribution by its different position, the distribution of different directions, difform distribution, the distribution modes such as concentrated and dispersion of the point of different big or small sites, the point of varying number site, point are come the dot pattern of recorded information, are called geometric information and imbed code.

Described " physical information is imbedded code " is meant the distribution of its dot pattern, distribution by its different modulating mode, the distribution of phase modulation method, the distribution of the different directions of propagation, the distribution of different frequency, the distribution of different colours, the distribution modes such as distribution of different gray scales are come the dot pattern of recorded information, are called physical information and imbed code.

Described " gamma characteristic of screen site " is the characteristic of gray scale homogenization of instigating the site of screen, the printing of screen site is counted have the characteristic of identical formation, and the minimized characteristic of the gray-scale value of screen site.

Described " size property of screen site " is meant that the point of whole sites of screen site is the characteristic that constitutes with counting of minimized printing points, and the size of screen site minimize characteristic.

Described " interval characteristics of screen site " is meant the characteristic that the site of screen is arranged according to certain spacing distance, and the interval of screen site is greater than the characteristic of the size of screen site.

Described " alignment characteristics of screen site " is meant the two-dimensional matrix of the site of screen arranged the alignment characteristics of rotating according to 45 degree.

Described " information embedded mode " thus be meant half-tone screen code arrange constituted shading according to the two-dimensional matrix form, shading and the printed image data that constitutes overlapped, can in the zone of this printed images, imbed the mode of information.Here be divided into 3 kinds of modes according to concrete requirement of using: a kind of is the color differentiating embedded mode, the color that is half-tone screen code is different with the color of printed images, for example half-tone screen code is the black K version, printed images is C, M, the Y version is because half-tone screen code is an independent color, even therefore overlap fully, still can correctly discern the code value of half-tone screen code with printed images.Another kind is the preferential embedded mode of half-tone screen code, promptly when the site of some site of half-tone screen code and printed images overlaps, because the site of half-tone screen code has priority, then the site of printed images is moved near the of screen code, even half-tone screen code is identical with the color of the site of printed images like this, spatially can distinguish, therefore can correctly discern the code value of half-tone screen code.Another is the preferential embedded mode in printed images site, promptly when the site of some site of half-tone screen code and printed images overlaps, because the site of printed images has priority, then the site of half-tone screen code is moved near the site of printed images, even same half-tone screen code is identical with the color of the site of printed images, spatially also can distinguish, therefore can correctly discern the code value of half-tone screen code.

Described " half-tone screen code " is meant that the possible information of the pattern-recognition with geometric or physical distribution of having considered printing screen characteristic writes down the code of imbedding with information.

Described " vision mode " is meant the visual characteristic of people's eyes, comprise that human eye mixes the visual characteristic that exists, the visual characteristic of site size, the visual characteristic of network point distribution direction etc. to different colours, vision mode is the theoretical foundation of printing screen characteristic, matches with printing screen characteristic.

Described " different colours mix exist visual characteristic " is meant near a kind of when adding the color of another kind of very small size the large tracts of land print color on print media, and human eye is to the very very difficult identification of the color of small size.

Described " visual characteristic of site size " is meant the result calculated according to Rayleigh criterion, and the size of the site of diameter below 0.1mm or site are the size or the interval, site of the sightless site of naked eyes at interval.

Described " visual characteristic of network point distribution direction " is meant the arrangement for the site, if file is set at 90 degree, walks crosswise and be set at 0 degree, to be that human eye is the easiest feel in the arrangement of its site, but if with ranks rotation 45 degree, human eye just is difficult to the characteristic of sensation.

Described " point or the site of distribution baseline network " is meant in constituting half-tone screen code or half-tone screen code information module, the point that has a site or site at least has more than one geometry distribution reference informations or the site of physics distribution reference information or the point of site in position distribution reference information, direction distribution reference information, site size reference information, PHASE DISTRIBUTION reference information or the direction of propagation distributed intelligence of half-tone screen code or half-tone screen code information module.

Described " information of different modulating mode is imbedded method " is meant that the method for representing to print the gray scale of screen site by the size that changes different screen sites is the AM screen for the amplitude modulation screen.The method of printing the gray scale of screen site by the quantitaes that changes different screen sites is the FM screen for the frequency modulation screen.For the screen site of same gray-scale value, can be by different modulation system recorded informations, its as a result the screen characteristic of site do not change, the mode that this information record and information are imbedded is called the information record of different modulating mode and imbeds method with information.

Constitute dot pattern according to the different modulating mode, also can regard as and constitute dot pattern by a plurality of frequency contents.The form that its dot matrix distributes be identical be the equal meaning can be considered low-frequency dot pattern because the dot matrix of AM screen distributes, the dot matrix of FM screen distributes and can be considered high-frequency dot pattern.

Constitute dot pattern according to different modulation systems, distribute because the point of the site of the dot pattern of AM screen is concentrated by a plurality of points, so the quantity of the point of the site of AM screen is fewer, and the gray-scale value of point is bigger.On the other hand, because the point of the site of the dot pattern of FM screen is disperseed to distribute by a plurality of points, so the quantity of the point of the site of FM screen is many, the gray-scale value of each point is less.For the above reasons, constitute dot pattern according to the different modulating mode and also can be described as the dot pattern that the point according to the site of varying number constitutes, the dot pattern that constitutes according to the point of the site of different gray-scale values in other words conj.or perhaps is in other words conj.or perhaps according to the concentrated distribution of the point of site and the dot pattern of the different formations of disperseing distribution.Whatsoever the saying of sample its as a result the form of dot matrix mode profile be identical, therefore all belong within the scope of the present invention.

Described " sign property half-tone screen code " is with the self-existent a kind of code form of imbedding at the printed images information of carrying out of certain code form.

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.

Embodiment

Below, with reference to accompanying drawing the embodiment of the invention is further described, but embodiment of the present invention is illustrative rather than determinate.

The present invention at first provides the screen coding embedded new topic case in printed image data as additional information.

Fig. 1 is the processing flow chart of information flush mounting.As shown in Figure 1, image information obtains step, reads the printed image data of imbedding print media.Read method can directly read from recording mediums such as storer and hard disk, and also the method that can print by emulation from printer driver extracts.

The half-tone screen code shift step is transformed into the information record of the possible geometric or physical distribution of the pattern-recognition that possesses printing screen characteristic simultaneously or the half-tone screen code information module group that information is imbedded code to the additional information of imbedding printed images.At this, minimize in order to make the net number that constitutes half-tone screen code, the half-tone screen code net number is set at 1.Thus, the site gray-scale value also minimizes, and can not reduce the quality of the printed images of the information of being embedded with like this.

Setting about the interval of half-tone screen code site, arrange the site of the half-tone screen code of the printing precision below 1200dpi, because the size of each site is more than 0.42mm, near the discernible size of Ruili criterion human eye, therefore half-tone screen code information module group's arrangement, should consider the form of AM vertically hung scroll screen, i.e. each site proper alignment as much as possible.At this moment, the interval of half-tone screen code site, be set at greater than half-tone screen code site size, during according to the diverse location recorded information of half-tone screen code site, because the half-tone screen code network point distribution is a randomness, according to the information content, the interval of half-tone screen code site is bigger more than stochastic distribution field, half-tone screen code site, the distribution chance phenomenon of the shading site that is constituted is more little, and the site of half-tone screen code is arranged and seen that its row are neat more.Thus, the advantage that can not reduce the print image quality after the information of imbedding is arranged.

During arrange the site of the half-tone screen code of the printing precision more than 1200dpi, because the size of each site is below 0.42mm, the size of its point and the spacing of dot matrix, according to the Ruili criterion is the unrecognizable size of human eye, therefore half-tone screen code information module group's arrangement, should consider the form of FM frequency modulation screen, at this moment, the interval of half-tone screen code site, can be set at less than half-tone screen code site size, during according to the diverse location recorded information of half-tone screen code site, though the half-tone screen code network point distribution is a randomness, according to the information content, even the interval of half-tone screen code site is more littler than stochastic distribution field, half-tone screen code site, though the distribution chance phenomenon of the shading site that is constituted is bigger,, uncomfortable sensation can not appear from whole screen effect.Thus, the advantage that can not reduce the print image quality after the information of imbedding is still arranged.

Described shading image data constitute step, constitute the shading image data by above information module group.At this, in the printed image data corresponding to the every field of multi-medium data, constitute the shading image data by arrangement information module group in order; Part beyond the corresponding field is perhaps imbedded irrelevant half-tone screen code or is not imbedded whatever, selects wherein any processing.

New image data output step, perhaps image information and the shading image data with above-mentioned input overlap output, perhaps only export the shading image data, and any new image data is wherein exported.

Fig. 2 is the processing flow chart of information recognition device.In Fig. 2, the image information read step reads the view data that is embedded with the additional information print media with imageing sensors such as image reading apparatus or cmos sensors.

Image processing step is that the brightness value by computed image carries out the brightness of image that the illumination of control chart image-position sensor comes brightness of image to be controlled to be certain value and handles, and carries out binarization processing of images.

The code value identification step is extracted the site of describing additional information and the code value that identifies code out.

Recognition result output step is exported above recognition result.

The present invention, number based on the site is few more good more, the gray-scale value of site is the smaller the better, it imbeds the result influences just more little printing screen characteristic to printed images, as shown in Figure 3, by the inner shared distribution reference point of information module group, perhaps by distribution reference point siteization is carried out motion to the constructive method that the site is decided to be 4 many bits of system half-tone screen codes of 1.

1 half-tone screen code that the half-tone screen code net number is made as shown in Figure 3.In Fig. 3, be made as information point to 301; Being made as net number to 302 is 4 many bits of system half-tone screen codes of 1; But 303 distributed areas that are decided to be information point 301.But information point 301 is to distribute recorded information by geometric diverse location distribution or by the formed different angles in the center of distributed areas 303.It is also conceivable that by difformity in addition and come recorded information.

For example, in Fig. 3, dot pattern (a) can be set at many bit values 0; (b) dot pattern can be set at many bit values 1; (c) dot pattern can be set at many bit values 2; (d) dot pattern can be set at many bit values 3; (e) can be set at the position reference dot pattern that constitutes positional information with (f) dot pattern.

According to a site can recorded information the definition of information record efficiency of bit number, half-tone screen code information record efficiency as shown in Figure 3 is 2, promptly dot matrix can write down the information of 2 bits.

In the present embodiment, as shown in Figure 3, for the example that net number is set at 1 half-tone screen code, as shown in Figure 4, about the distribution of the information point 301 of half-tone screen code, also can be considered to is that the physical different distribution pattern of the phase modulation (PM) by being included in two-dimensional space is come logger computer information.

The view data of the square standardization grid of the interval T that is constituted by a plurality of screens site information point 301 of matrix distribution be set at the phase modulation method of half-tone screen code is as follows so for ζ m, n}:

Formula 1

Here, by change ε (m, n) and δ (m, n), realization is to transmitting signal { ζ m, the phase modulation (PM) of n}.

According to top formula, information point 301 coordinates that convert half-tone screen code to are made as (m, n); With computerized information be set at ω (ω ∈ 0,1 ..., k).So as shown in Figure 4: 401 is m=-1, n=1; 402 is m=1, n=1; 403 is m=1, n=-1; 404 is m=-1, n=-1.

Dot pattern as shown in Figure 3, can regard as by come logger computer information in the physical different distribution pattern of the phase modulation (PM) of two-dimensional space, the advantage of this method is exactly, because the physics method of phase modulation (PM), as long as there is initial location point just can extrapolate the phase relation of all dot matrix, therefore can save the number of position reference point.

In like manner, for dot pattern shown in Figure 3, also can be considered to is by coming logger computer information in this physical diverse location pattern of the electric wave direction of transfer of two-dimensional space.

Dot pattern as shown in Figure 3, but for the distributed areas 303 of information point 301, but because 10 distributed areas are arranged, so can write down 0 to 78 binary information at least.Because consider the processing power of the microprocessor of playing device, and merchandise cost and function two aspects can both satisfy, 4 diverse locations of dot pattern write down 0 to 3 message block so generally use as shown in Figure 3, can satisfy the needs in the use, and can obtain higher accuracy of identification.

With reference to the example of figure 3, but, use more diverse location, angle, phase modulation (PM) and the direction of propagation etc. of distributed intelligence point 301 can also constitute 16 systems or the above many bits half-tone screen code of 32 systems by enlarging distributed areas 303.

The information module group form of half-tone screen code shown in Figure 5.As shown in Figure 5, based on the screen characteristic a plurality of half-tone screen codes as information module group, carry out the half-tone screen code network point distribution example that matrix distribution constitutes shading by net number shown in Figure 3 being set at 4 many bits of system half-tone screen codes of 1.Be set at information point to 501; 502 are set at the half-tone screen code of net number 1; 503 are set at the position that information point 501 can be set.

As shown in Figure 5, in information module group, S ₁₁, S ₁₂, S ₁₃, S ₁₄, S ₁₅And S ₁₆As main vertical reference point row; S ₂₁, S ₃₁, S ₄₁, S ₅₁And S ₆₁As the principal datum point range; S ₄₂, S ₄₃, S ₄₅And S ₄₆As secondary vertical reference point row; S ₂₄, S ₃₄, S ₄₄, S ₅₄And S ₆₄As secondary horizontal reference point range.

At this, main vertical reference point row S ₁₁, S ₁₂, S ₁₃, S ₁₄, S ₁₅And S ₁₆With the capable S of secondary vertical reference ₄₂, S ₄₃, S ₄₅And S ₄₆Make comparisons S ₁₁Network point distribution is in the middle; S ₄₁Network point distribution is in the rightmost side; S ₄₄Network point distribution is in the leftmost side.In addition, principal datum point range S ₂₁, S ₃₁, S ₄₁, S ₅₁And S ₆₁With secondary horizontal reference point range S ₂₄, S ₃₄, S ₅₄And S ₆₄Relatively, principal datum point range S ₂₁, S ₃₁, S ₅₁And S _{6 1}Be distributed in the leftmost side of site; Secondary horizontal reference point range S ₂₄And S ₃₄Network point distribution is in the middle; S ₅₄And S ₆₄Network point distribution is in the rightmost side.And principal datum point range and secondary horizontal reference point range capable different with secondary vertical reference point is different by above main vertical reference point row, and the directional information that can be used as information module group is discerned.

S ₂₂, S ₂₃, S ₂₅, S ₂₆, S ₃₂, S ₃₃, S ₃₅, S ₃₆, S ₅₂, S ₅₃, S ₅₅, S ₅₆, S _{6 2}, S ₆₃, S ₆₅And S ₆₆Be set at the half-tone screen code of each 2 bit information, use these 16 half-tone screen codes can write down 32 bit informations.

When the form of additional information as the print media coordinate time, the expression S ₂₂, S ₂₃, S ₂₅, S ₂₆, S _{3 2}, S ₃₃, S ₃₅, S ₃₆, S ₅₂, S ₅₃, S ₅₅, S ₅₆, S ₆₂, S ₆₃, S ₆₅And S ₆₆The coordinate figure of each multimedia printed article.Utilize site coordinate figure on every side can carry out error correction or checking treatment for the feature of certain numerical value.

When the form of additional information during as the sequence information of print media play area, S ₂₂And S ₂₃, S ₂₅And S ₂₆, S ₃₂And S ₃₃, S ₃₅And S ₃₆, S ₅₂And S ₅₃, S ₅₅And S ₅₆, S ₆₂And S ₆₃And S ₆₅And S ₆₆The sequential value that shows respective regions as identical numerical value separately.Utilize two identical features of corresponding site numerical value can carry out error correction or checking treatment.

Always, for correct identification site, the size of site based on sampling theory, needs the size of printing points more than 2 times.As shown in Figure 5, the information module group's who is constituted S ₂₂And S ₂₃, S ₂₅And S ₂₆, S ₃₂And S ₃₃, S ₃₅And S ₃₆, S ₅₂And S ₅₃, S ₅₅And S ₅₆, S ₆₂And S ₆₃And S ₆₅And S ₆₆Even each numerical value is identical, so the size of the size of each site as printing points, based on sampling theory, can correctly discern the code value of half-tone screen code by half-tone screen code.

As shown in Figure 5, information module group is made of 6 row * 6 row, initial and the capable or benchmark point range of each two reference point of center of each 6 row * 6 row because distributed, if, just can identify the code value of information module group's code so detect the halftone dot image of half-tone screen codes of any 6 row * 6 row by imageing sensor.

During identifying information point, because both sides must need two reference points, institute's image taking sensor can discern any decide x capable * x is listed as (x=1,2,3 ... the condition of half-tone screen code n) is the width that diameter that imageing sensor detects the zone needs the capable or benchmark point range of reference point more than two times.

Therefore, if be provided with x capable * the initial and middle of the half-tone screen code matrix of x row respectively two reference row or benchmark point range, read area and minimize.

Information module group as shown in Figure 5 reads minimizing of area.To the zone of 2mm * 2mm only writing down maximum 32 bit informations.In addition, for per 1 information dot matrix, can write down the above information of 2 bits.

Have again, when traditional method information point is set to 4 row x4 row, add that the position reference dot matrix of 5 row x5 row need be provided with 9 row x9 row points altogether.The present invention, if with the same terms, the dot matrix that 6 row x6 row only are set according to the site gamma characteristic of the communization of reference point and printing screen is just passable.Therefore the overall gray value of the shading that is made of information module group shown in Figure 5 is lower, so can not produce inharmonious sense for printed article.

And then information module group's shown in Figure 5 reference point is based on the site interval characteristics of printing screen, for the S of principal datum point range ₁₁, S ₁₂, S ₁₃, S ₁₄, S ₁₅And S ₁₆, the principal datum point range S ₂₁, S ₃₁, S ₄₁, S ₅₁And S ₆₁, secondary vertical reference point row S ₄₂, S ₄₃, S ₄₅And S ₄₆, secondary horizontal reference point range S ₂₄, S ₃₄, S ₄₄, S ₅₄And S ₆₄All be provided with as printing screen siteization.Its advantage, the shading image quality that is made of information module group is better than classic method.

In addition, in being provided with of information module group as shown in Figure 5, consider that according to Ruili criterion theory, the dot matrix of site is easy to be gone out soon when the printer prints printed article of 600dpi, therefore printing screen, to present the amplitude modulation screen relatively good, i.e. the AM screen.Based on printing AM screen site interval characteristics, but the site is bigger than the site size that is made of the setting area, site at interval, i.e. I ₄₀₁=I ₄₀₂＞1/2 (W ₄₀₁+ W ₄₀₂).Its advantage is that the phenomenon of the shading stochastic distribution that is made of information module group is few, so the image quality of shading is better than traditional location mode.

In addition, half-tone screen code shown in Figure 3, distribution about the information point 201 of half-tone screen code, come the progressive of this consideration method of logger computer information to be by the physical different distributions pattern that is included in the two-dimensional space phase modulation (PM): for site shown in Figure 5, because if provide the initial coordinate values of a pair of site, just can obtain other sites phase modulation (PM) result, thus as the information module group of Fig. 5 according to shown in Figure 6, count and can raising information imbed efficient by reducing reference net.

As shown in Figure 6, utilize feature, when the code value of identification half-tone screen code, can constitute new information module group by the phase modulation recording information of site.In Fig. 6, among the information module group, S ₃₁, S ₃₂, S ₃₃, S ₃₄And S ₁₅Be vertical reference point row, S ₁₃, S ₂₃, S ₄₃And S ₅₃Be the horizontal reference point range.Same with group of pictures shown in Figure 4, S ₁₁, S ₁₂, S ₁₄, S ₁₅, S ₂₁, S ₂₂, S ₂₄, S ₂₅, S ₄₁, S ₄₂, S ₄₄, S ₄₅, S ₅₁, S ₅₂, S ₅₄And S ₅₅As the half-tone screen code of representing 2 bit informations separately.Use this 16 half-tone screen codes, can write down 32 bit informations.

At this, go in order to distinguish horizontal reference point range and vertical reference point, and information module group's direction, S ₃₃The distribution reference point distribute as the right side.

In addition, because utilized feature, so can use a horizontal reference point range and vertical reference point row just can identify the code value of each half-tone screen code by site phase modulation recording information.

Secondly, the present invention can solve the method for the printing interference check problem of dot pattern.

At first, check is interfered in so-called printing, when the pattern of a plurality of rules coincides together exactly, and the interference pattern that is taken place.At this, considered by the printing that difference caused of the track number of the line number of dot pattern and printer and printing machine etc. and interfered the check phenomenon.

The line number of parallel lines is defined as L _n, when line is counted L _N1With L _N2When any two parallel lines overlap, interfere the frequency P of check _m

Formula 2

P _m＝|L _n1-L _n2|

Can derive by this formula.According to above formula, interfere the check period T _mFormula is as follows, for interfering the inverse of check frequency.

Formula 3

$T_m=\frac{1}{|L_{n1}-{\mathrm{<figure-callout\; id="2"\; label="L\; n"\; filenames="HSA00000045677700082.png"\; state="\{\{state\}\}">L</figure-callout>}}_n|}$

The conclusion of above-mentioned formula is exactly, and when two of parallel lines patterns overlap, in order check not occur interfering, must be 0 interfering the check frequency setting.Be that line is counted difference very hour, interfere the check frequency just low more, so interfere the check cycle elongated, its result interferes check not clearly.

Also have a kind of viewpoint to be in addition, interfere the check state by forming stable nothing to the angle of site rotation 45 degree.

Why difference between the track number of the line number of dot pattern and printer and printing machine etc. appears in traditional method, is the result who is based on the spacing of the dot pattern that the desirable line number of printing machine calculates owing to dot pattern.But reality is, because error can appear in the printing machine line number of printer and printing machine etc., so when by dot pattern printing shading, the check phenomenon occurs interfering through regular meeting.

In the present embodiment, at when using the normal printer printing, recurrent interference check problem provides in order to control interference in minimum zone, the distribution arrangement of site rotation 45 degree backs is constituted the example of the half-tone screen code of new dot pattern.

As shown in Figure 7, but 701 as information point, 702 as net number be distributed as many bits half-tone screen code of 1 45 degree rotations, 4 systems, 703 distributed areas as information point 701.In Fig. 7, dot pattern (a) as the dot pattern of many bit values 0, (b) as the dot pattern of many bit values 1, (c) as the dot pattern of many bit values 2, (d) as the dot pattern of many bit values 3, (e) as the dot pattern of the dot pattern that constitutes the positional information row, (f) as the dot pattern that constitutes the positional information row.

Equally, according to the definition of information record efficiency, the information record efficiency of half-tone screen code can calculate 2 as shown in Figure 7.

Equally, but Fig. 7 information point 701 is to come recorded information by the distribution of geometric diverse location or with the center of distributed areas 703 and the different angles of information point 701 connecting lines.

In addition, also can consider information point 701 to other information points by different shape recorded informations.

In addition, identical with half-tone screen code shown in Figure 3, in Fig. 7, but the connecting line of the center of 703 sites, 701 pairs of distributed areas of information point and information point 701 is by geometric different angles recorded information.

In the present embodiment, identical with half-tone screen code shown in Figure 3, net number shown in Figure 7 is the example of 1 half-tone screen code, as shown in Figure 8, about the distribution of information point 701 of the half-tone screen codes that rotate 45 degree, also can be considered to is that the physical different distributions pattern of the phase modulation (PM) by two-dimensional space is come logger computer information.

By formula 1, in the half-tone screen code of 45 degree rotations, be information point 701 setting coordinates (m, n), computerized information be set at ω (ω ∈ 0,1 ..., k), as shown in Figure 8,801 is m=0, n=1; 802 is m=1, n=0; 803 is m=0, n=-1; 804 is m=-1, n=0.

Identical with half-tone screen code shown in Figure 3, for dot pattern shown in Figure 7, the physical different distributions pattern of the phase modulation (PM) by being included in two-dimensional space comes the advantage of this method of logger computer information to be, when when identification so long as utilize the initial state information of site, just can identify the phase value of each site, therefore can reduce counting of distribution reference point.

Equally, to dot pattern shown in Figure 7, also can be considered to is that physics different distributions pattern by at the electric wave direction of transfer of two-dimensional space is come logger computer information.

Same with half-tone screen code shown in Figure 3, example with reference to half-tone screen code shown in Figure 7, but enlarge distributed areas 703, each diverse location, direction and phase modulation (PM) etc. by distributed intelligence point 701 also can constitute 16 systems or the many bits half-tone screen code more than 32 systems.

In addition,, half-tone screen code shown in Figure 7 distributes, so can interfere printing the check phenomenon to be controlled in the minimum zone with 45 degree because being the site.

What Fig. 9 represented is, based on the screen characteristic a plurality of half-tone screen codes as information module group, carry out the example that matrix distribution constitutes the half-tone screen code network point distribution of shading by the half-tone screen code that net number shown in Figure 7 is made as the many bits 45 degree rotations of 14 systems then.901 as information point, 902 positions that can distribute as information point 901, and 903 is 1 45 degree half-tone screen codes as counting.

As shown in Figure 9, in information module group, S ₃₁, S ₃₂, S ₃₃, S ₃₄And S ₃₅As vertical reference point row, S ₁₃, S ₂₃, S ₄₃And S ₅₃As the horizontal reference point range.

At this, same with information module group shown in Figure 5, vertical reference point S ₃₁, S ₃₂, S ₃₃, S ₃₄And S ₃₅With horizontal reference point row S ₁₃, S ₂₃, S ₄₃And S ₅₃After comparing as can be seen, S ₃₃Network point distribution in the lower left corner, in order to distinguish main vertical reference point row and the different of principal datum point range and as information module group's directional information.

In addition, for each site S ₁₁, S ₁₂, S ₁₄, S ₁₅, S ₂₁, S ₂₂, S ₂₄, S ₂₅, S ₄₁, S ₄₂, S ₄₄, S ₄₅, S ₅₁, S ₅₂, S ₅₄And S ₅₅All can write down 2 bit informations, therefore an information module group is same with information module group shown in Figure 5, can write down 32 bit informations.

Same with information module group shown in Figure 5, when the coordinate time of the form of additional information, represent S as printed medium ₁₁, S ₁₂, S ₁₄, S ₁₅, S ₂₁, S ₂₂, S ₂₄, S ₂₅, S ₄₁, S ₄₂, S ₄₄, S ₄₅, S ₅₁, S ₅₂, S ₅₄And S ₅₅The coordinate figure of the respective regions of each print media.Can utilize near the coordinate figure in site to carry out error correction or checking treatment for the feature of certain numerical value.

Same with information module group shown in Figure 5, when the form of additional information during as the sequence of the play area of printed medium, as S ₁₁And S ₁₂, S ₁₄And S ₁₅, S ₂₁And S ₂₂, S ₂₄And S ₂₅, S ₄₁And S ₄₂, S ₄₄And S ₄₅, S ₅₁And S ₅₂And S ₅₄And S ₅₅Each corresponding site numerical value be identical, can utilize numerical value identical feature in site to carry out error correction or checking treatment.

According to sampling theory, must be the size of printing points more than 2 times, but as shown in Figure 9, can make the configuration information module group S of institute by half-tone screen code ₂₂And S ₂₃, S ₂₅And S ₂₆, S ₃₂And S ₃₃, S ₃₅And S ₃₆, S ₅₂And S ₅₃, S ₅₅And S ₅₆, S ₆₂And S ₆₃And S ₆₅And S ₆₆Each corresponding site numerical value be identical, so, still can correctly discern the code value of half-tone screen code according to sampling theory even the size of the size of each site as printing points.

As shown in Figure 9, a figure model group constituted by 5 row * 5 row originally, but because make it rotate 45 degree, so just become 9 row * 9 row.

Information module group as shown in Figure 9 and information module group shown in Figure 5 are same, read minimizing of area.For the zone of 2.12mm * 2.12mm only, just can write down 32 information.

In addition, in information module group's shown in Figure 9 distribution, according to the site interval characteristics of printing screen, but the interval of site is bigger than the site size that is made of the distributed areas, site, promptly

(I ₉₀₁ ²/2) ^1/2＞(W ₉₀₁ ²+W ₉₀₂ ²) ^1/2

At this, set I ₉₀₁=I ₉₀₂

Its advantage is that the shading stochastic distribution phenomenon that is made of information module group is few, so the image quality of shading is better than traditional location mode.

Secondly, can tackle printing about the half-tone screen code of rotation 45 degree of confirming motion of the present invention interferes the embodiment of the effect of check problem to describe.

Figure 10, printing equipment use Canon C1 (Canon of Co., Ltd. system), paper to use Nippon Paper 128g/m ²With Nippon Paper 81.4g/m ², the half-tone screen code mode uses Fig. 3 or dot pattern shown in Figure 5, its result separately as shown in figure 10, printing occurred and has interfered the check phenomenon, so the appearance of printed article is bad.

Figure 11 uses and above same printing equipment, Nippon Paper 128g/m ²With Nippon Paper 81.4g/m ²And the dot pattern of the half-tone screen code of Fig. 7 or rotation shown in Figure 9 45 degree, its separately print result printing occurs and interfere the check phenomenon as shown in figure 11, the outward appearance of printed article is also fine.

Below, be example with the multimedia printing system, imbed method, information recognition device, information identifying method, information with regard to information flush mounting, information and imbed program, information and imbed program and information and imbed the relevant treatment scheme of printed medium and be introduced.

About the concrete treatment scheme of information flush mounting, contrast Figure 12 describes.

In input step S1, input printed image data and the additional information of imbedding print media.Therefore, the input method of printed image data can directly read from the electronic data pen recorder of internal memory and hardware etc., also can read printed image data from the driving of printer.

In half-tone screen code shift step S2, the additional information in the print media of will being embedded to above-mentioned input, be transformed into work according at least a printing screen characteristic in the interval characteristics of the dimensional characteristic of the gamma characteristic of printing screen site, printing screen site or printing screen site, the possible geometric or physical information record of pattern-recognition and information are imbedded the half-tone screen code of code.

At this, can also imbed the possible information of pattern-recognition that code is referred to as to have simultaneously the screen characteristic again to the information that the optical readable that has the screen characteristic is simultaneously got and imbed code.To be the possible information of the pattern-recognition meaning of imbedding code with optical readable get, and to imbed sign indicating number be the identical meaning.

And then in this step, for the half-tone screen code of imbedding code as the possible information of the pattern-recognition that has the screen characteristic simultaneously, the gray scale according to printing screen characteristic all minimizes the gray scale of the net number of half-tone screen code or site and homogenization.

Information module group constitutes step S3, the method by matrix distribution with above-mentioned conversion half-tone screen code configuration information module group.Use information module group can imbed the coordinate information of printed medium, also can imbed the sequence information of the corresponding play area of printed medium, so in printed medium, also can imbed exercise question, the author who comprises document and make the tracked information of time etc. and the e-file of document this read information etc. automatically.

Above-mentioned information module group's distribution is for the site of each half-tone screen code with same grayscale, utilize site shallow more this screen characteristic of overall intensity of big more printing screen at interval, consider the restriction of reading area in the practical application, can be set at the site of each half-tone screen code at interval the value more than 2 times of site size.At this, the site size value is to be defined as the regional extent that information point can distribute.

Imbed the zone and extract step (S4) out, for the printed image data of being imported, as shown in figure 13, when additional information as printed medium in during the sequence information of corresponding play area; It is imbedded scope and should be defined as each image-region of multi-medium data in requisition for broadcast; Can extract phase should each regional image profile.For example in Figure 13, for printed medium 1301, want each image-region of the multi-medium data play as reply (1), (2), (3), (4), (5) and (6) separately, imbed and want in each image-region, to play pairing each image sequence value of various multimedias as the multimedia value.That is, with the sequential value of each play area in the printed medium additional information as multimedia broadcast value.

As shown in figure 14, when the coordinate time of additional information, can extract the information module group's of each printed medium coordinate of record matrix distribution zone out as printed medium.For example shown in Figure 14, each coordinate information 1402 of printed medium 1401 is embedded in the play area 1403 in the printed medium.

In addition, as shown in figure 15, for printed image data as document and so on, can first extract phase should each document gap area, and additional information is imbedded in the gap of document.For example in Figure 15, for printed medium 1501, can be (1), (2), (3), (4), (5) and (6) as the gap area of document separately.

Information is imbedded step S5, by the difference of Figure 13, Figure 14 and three kinds of purposes of Figure 15, carries out following different separately information and imbeds method.

Want each image-region of playing for shown in Figure 13, can be in order conversion be distributed to respective regions as the half-tone screen code information module group of the image sequence information of broadcast value.Method with the reflected code of identical numerical value is embedded in the respective regions.

For the zone beyond the play area,, can consider to imbed by the sign indicating number of half-tone screen code beyond the multimedia value because the balance of shading integral body is fine.In addition, for the zone beyond the respective regions, also can imbed half-tone screen code.

When the information of imbedding object as shown in figure 14 as the print media coordinate time, can be distributed as respective regions to the x of record printed medium coordinate or the half-tone screen code information module group of y information.

In the time of in additional information being embedded to as shown in figure 15 the document gap, the e-file of the formation tracked information that can specify file or the document is transformed into half-tone screen code information module group as reading information etc. automatically, is embedded in the document gap by shading image data then with the same size in respective document gap.

For the matrix distribution of half-tone screen code, when the color of half-tone screen code was set to black and white, the shading setting that is constituted also was black.Black to original C, M, Y, K printed image data is the K version, by C, M, Y colour specification black, the shading of half-tone screen code is handled as the black K version.

When half-tone screen code was imbedded as chromatic information, based on vision mode, the color of each half-tone screen code of the shading that (S5) constituted in above-mentioned steps was to decide according to the color around the half-tone screen code.For example, when the color around the half-tone screen code is white, can be the color settings of half-tone screen code yellow.

The advantage that half-tone screen code is imbedded as chromatic information is, and is minimum to the image quality influence of printed image data.

Output step S6 can overlap above-mentioned shading image with the printed images that carried out color treatments, constitute the plate-making data output of new printed image data by common printed machine; Perhaps also can directly use printer or common printed machine printing to imbed printed medium.

In addition, can also only the shading that is constituted with above-mentioned half-tone screen code group of pictures be exported or above-mentioned shading image is overlapped with the printed images that carried out color treatments, constitute new printed image data, plate-making data output by common printed machine, the printing of perhaps directly using printer or common printed machine to print out the formation shading is pasted, and this printing is attached to constitute the multimedia printed article on the existing printed article.

Secondly, with reference to the detailed process content of Figure 16 explanation about the half-tone screen code recognition device.The half-tone screen code recognition device relevant with present embodiment

View data read step S1 uses imageing sensor, and the information of reading is imbedded the whole or partial image data of printed medium.

In binaryzation step S2, carry out binary conversion treatment for the above image that reads.

At this, in order to improve the processing speed of program, the illumination section of imageing sensor module, be in uniform illumination condition as far as possible, in addition, by detecting the brightness of illumination of CMOS sensing recognition image sensor, be fixed value according to the brightness of illumination of its brightness value control chart image-position sensor.

Extract out among the step S3 at reference point, the ranks that at first will extract reference point out be listed as the center reference point that intersects, the composition rule of capable according to reference point then or benchmark point range is extracted the dot matrix of the capable or benchmark point range of each reference point out.

In calculating half-tone screen code value step S4, by the dependency basis positional information of row or benchmark point range on schedule, the code value of calculating each information point is obtained half-tone screen code information module group's code value then.Or, going out the phase modulation (PM) result of each information dot matrix with the phase modulation (PM) algorithm computation with the initial value of reference point as phase modulation (PM), and the code value that calculates each half-tone screen code calculates half-tone screen code information module group's code value.

In code value output step S5, the half-tone screen code information module group's who calculates more than the output code value.

Loop as the half-tone screen code recognition device constitutes an example, and as shown in figure 17, imageing sensor is connected to the multimedia microprocessor, and the multimedia microprocessor is connected respectively to SD card, action button, USB, sound input amplifier and sound amplifier with speaker.

In addition, power supply is connected respectively to imageing sensor, light fixture, multimedia microprocessor, SD card, action button, USB, sound input amplifier and sound amplifier with speaker.

The sound input amplifier connects microphone, and sound amplifier with speaker connects loudspeaker.

Here, at imageing sensor shown in Figure 17, as shown in figure 18, carry out following detailed description.

In Figure 18, cmos image sensor is placed on the imageing sensor substrate 1801, between cmos image sensor 1802 and printed medium 1806, lay camera lens 1803, re-use on the lid 1805 of the imageing sensor that optical material such as organic glass makes and press from both sides LED illumination 1804.On printed medium 1806, LED illumination 1804 directly is not subjected to light as far as possible, by accepting light between optical material.Its advantage is, can make printed medium be subjected to luminance brightness even as far as possible, so just can make that the image that reads is carried out the algorithm of binary conversion treatment is simple, and the image processing speed of microprocessor is improved.

The information relevant with present embodiment is imbedded printed medium, can use following two kinds of methods.Information is imbedded one of creating method of printed medium: use above-mentioned information flush mounting, with the printed image data of input with imbed the output that overlaps, prints or make a plate of shading that processing constitutes by the half-tone screen code information of carrying out, the print media of imbedding until the information of making.

Information imbed printed medium creating method two: as shown in figure 19, at the printed article that has printed out in advance, use above-mentioned information flush mounting, content with reference to the printed article that has printed out is in advance imbedded the shading of handling and constituting by the half-tone screen code information of carrying out, this shading is printed as paster, again paster is pasted on the respective regions of the printed article that prints out in advance the another kind of printed medium of also can the information of making imbedding.

Its advantage for the printed article of having published already, can the information of making be imbedded medium.

The LED display part of the information recognition device relevant with present embodiment in Figure 17 is considered from attractive in appearance and apparent this two aspect, proposes to increase the scheme of a display lamp light guide plate, as shown in figure 20.

In Figure 20, the right lateral surface 2002 of organic glass light guide plate 2001 and left-hand face 2003 are carried out the light reflection and are electroplated, coat fluorescent paint by lower surface 2004 then at organic glass light guide plate 2001, the light that is installed in the LED illuminating lamp 2005 on the printed circuit board (PCB) 2007 carries out reflection of light by the right side surface reflection face 2002 of organic glass leaded light version 2001 and the reflecting surface 2003 on the left side, and the luminous light guide plate that causes of fluorescent material that scribbles bottom organic glass is luminous comprehensively again.Be characterized in bigger, and brightness wants high than the irradiated area of LED illuminating lamp only.

Industry is utilized the possibility of aspect:

According to the present invention, utilize the information that makes above-mentioned motion to imbed the method for printed medium, following several application example is described.

In Figure 21, exemplify the example of the multimedia printed article that comprises photograph album and teaching material etc.Use above information flush mounting, screen coding embedded each relevant play area to the printed article view data that comprises description photograph album and teaching material etc. as the broadcast value.

In addition, be attached in the above information recognition device as database, constitute multimedia playing apparatus being worth corresponding multimedia data with each broadcast.

Use multimedia playing apparatus,, just can play respective regions multimedia data as long as click the specific region of multimedia printed article.

In the concept map of the Another Application example of multimedia printed article shown in Figure 22, to the printed article that comprises description photograph album and teaching material etc. that prints out in advance, use above-mentioned information flush mounting, on each play area that sets at the view data of printed articles such as description photograph album and teaching material, set corresponding pasting patterns, then decide on the corresponding pasting patterns, imbed method by the information of above-mentioned half-tone screen code, imbed the broadcast value, the stickup that will be embedded with information then prints out.

Each stickup of having imbedded information is attached in the above printed article respective regions, constitutes the multimedia printed article.

In addition, be worth pairing multimedia data with each broadcast value and with broadcast, by the method for downloading, the method for USB, the method for SD card are sent to above-mentioned information recognition device and constitute multimedia playing apparatus.

Utilize multimedia playing apparatus, if the stickup of click paste on the multimedia printed article, just can be to playing out corresponding to the multimedia data of imbedding the multimedia value in the stickup.

The handling procedure with record function of Fig. 1 is joined in the above-mentioned multimedia playing apparatus, also can constitute multimedia playing apparatus with record function, with this multimedia playing apparatus click paste with record function on the multimedia printed article stickup or be embedded with the printed images of multimedia value, just can repeat playing go out corresponding multimedia data.

Secondly, about the application of login automatically such as manual documentation and large-scale hand cartridge paper.

For example,, can on notebook, imbed the coordinate information of each page and the information of number of pages, make each page of notebook have coordinate information and number of pages information according to the method for above-mentioned Figure 14.Use has the pen of half-tone screen code information recognition device, and when writing on described notebook, the imageing sensor of half-tone screen code information recognition device reads the half-tone screen code image that has coordinate information on the nib, discerns by microprocessor then.The coordinate figure that its half-tone screen code value is a nib signs in in the internal memory, can carry out location tracking to nib, all tracked information are sent on the computing machine, utilize literal identification OCR engine to be transformed into literal code to the document that is handwritten on the notebook, can directly the literal of writing on notebook directly be entered in the computing machine.

About traditional parity check method is as the parity checking site with at least one site among the half-tone screen code information module group, when carrying out parity checking and judging, whether correct as long as the situation of the situation of the odd even of the code value of the code that will identify and parity checking site odd even is compared if just can judge the code that identifies.

Method about the addition data verification is described below:

If the data mould of the many bit code of half-tone screen code is A, data matrix is D and d _Ij=0,1 ..., A-1, (i=1,2 ..., m, j=1,2 ..., n), then:

Formula 4

d ₁₁，d ₁₂，…，d _1n

D＝d ₂₁，d ₂₂，…，d _2n

…

d _m1，d _m2，…，d _mn

The data value of data matrix D can be calculated by following formula:

Formula 5

V＝d ₁₁*A ⁰+d ₁₂*A ¹+…+d _1n*A ^n-1+d ₂₁*A ⁿ+d ₂₂*A ⁿ⁺¹+…+d _2n*A ^2n-1+…+d _m1*A ^(m-1)n+d _m2*A ^(m-1)n+1+…+d _mn*A ^mn-1

If γ _Ij' be initially 0, then addition removes mould code check value R ^aFor;

Formula 6

$R^a=\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_{\mathrm{ij}}$

Here,

γ _ij’＝γ _ij’+d _ij

${\mathrm{\&gamma;}}_{\mathrm{ij}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\&GreaterEqual;A;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}-A\\ {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}<A;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\end{array}\right.$

Go mould code check method to be described below about multiplication:

If the data mould of the many bit code of half-tone screen code is A, data matrix is D and d _Ij=0,1 ..., A-1, (i=1,2 ..., m, j=1,2 ..., n), γ _Ij' be initially 1, by following formula (7) then multiplication remove mould code check value R ^mFor;

Formula 7

$R^m=\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_{\mathrm{ij}}$

Here,

γ _ij’＝γ _ij’*d _ij

${\mathrm{\&gamma;}}_{\mathrm{ij}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\&GreaterEqual;A;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}={\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}-A\\ {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}<A;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\end{array}\right.$

Remove in the modulo check γ at multiplication _Ij' product might therefore as formula (7), need to deduct a plurality of digital-to-analogues sometimes greater than the value of several times digital-to-analogue A.γ in the formula (7) _Ij'=γ _Ij'-A represents γ _Ij' deduct digital-to-analogue A and get back to γ putting _Ij' in, up to γ _IjTill the '＜A.

Go mould code check method to be described below about the addition multiplication:

According to the theory of conditional probability, establish the value that A is a digital-to-analogue, it is respectively 1/A that addition goes modulo check and multiplication to remove the probability of modulo check mistake verification ²If, adopt addition to go modulo check and multiplication to go these two kinds of verification modes of modulo check simultaneously, the probability of its mistake verification is respectively 1/A ⁴, improved checking precision greatly.

For example digital-to-analogue is the addition method of calibration of 8 half-tone screen code:

Remove mould code check value R by 5,6 additions of formula ^aFor;

$R^a=\underset{i=1}{\overset{4}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{4}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_{\mathrm{ij}}$

Here,

γ _ij’＝γ _ij’+d _ij

${\mathrm{\&gamma;}}_{\mathrm{ij}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\&GreaterEqual;A;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}-8\\ {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}<8;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\end{array}\right.$

For example digital-to-analogue is the multiplication method of calibration of 8 half-tone screen code:

Remove mould code check value R by 5,7 multiplication of formula ^mFor;

$R^m=\underset{i=1}{\overset{4}{\mathrm{\&Sigma;}}}\underset{j=1}{\overset{4}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_{\mathrm{ij}}$

Here,

γ _ij’＝γ _ij’*d _ij

${\mathrm{\&gamma;}}_{\mathrm{ij}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\&GreaterEqual;8;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}-8\&RightArrow;{\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\\ {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}<8;& {\mathrm{\&gamma;}}_{\mathrm{ij}}\text{'}\end{array}\right.$

Figure 23 is the illustration of another kind of dot pattern.As shown in figure 23: 2301 for concentrating the site, and 2302 for disperseing the site, and the distribution by different centralization and decentralization can logger computer information, and the gray-scale value of two kinds of sites is identical, therefore, can constitute equally distributed shading.2301 can also regard the site of different dot matrix numbers as with 2302 sites, also can regard the site that different frequency distributes as, different amplitude modulation site and frequency-modulation halftone dot.

The illustration of the dot pattern of Figure 24 different directions.As shown in figure 24: horizontal direction a can represent data 1, and left tilted direction b can represent data 2, and vertical direction c can represent data 3, and right tilted direction d can represent data 4.

As shown in figure 25, utilize feature, when the code value of identification half-tone screen code, can also constitute the information module group of 4*4 dot matrix by the phase modulation recording information of site.In Figure 25, among the information module group, S ₃₁, S ₃₂, S ₃₃, and S ₃₄Be vertical reference point row, S ₁₃, S ₂₃And S ₄₃Be the horizontal reference point range.Same with group of pictures shown in Figure 4, S ₁₁, S ₁₂, S ₁₄, S ₂₁, S ₂₂, S ₂₄, S ₄₁, S ₄₂, as the half-tone screen code site of representing 2 bit informations separately, S ₄₄As check bit, use this 8 half-tone screen codes, can write down 16 bit informations.If utilize 8 positions around each half-tone screen code site, write down 3 bit informations, so, 8 information dot matrix can write down 32 bit informations.

At this, go in order to distinguish horizontal reference point range and vertical reference point, and information module group's direction, S ₃₃The distribution reference point distribute as the right side.

In addition, because utilized feature, so can use a horizontal reference point range and vertical reference point row just can identify the code value of each half-tone screen code by site phase modulation recording information.

What Figure 26 represented is to have many bits screen coding mode group's of the 4*4 dot matrix that rotates 45 degree example.

As shown in figure 26, in information module group, S ₃₁, S ₃₂, S ₃₃, and S ₃₄As vertical reference point row, S ₁₃, S ₂₃, and S ₄₃As the horizontal reference point range.

At this, same with information module group shown in Figure 5, vertical reference point row S ₃₁, S ₃₂, S ₃₃, and S ₃₄With vertical horizontal reference point row S ₁₃, S ₂₃, S ₄₃And S ₅₃After comparing as can be seen, S ₃₃Network point distribution in the lower left corner, in order to distinguish main vertical reference point row and the different of principal datum point range and as information module group's directional information.

In addition, for each site S ₁₁, S ₁₂, S ₁₄, S ₂₁, S ₂₂, S ₂₄, S ₄₁And S ₄₂All can write down 2 bit informations, S ₄₄As the checking treatment position.Therefore 8 information dot matrix can write down 16 bit informations.

Have, information module group not only can be by the 4*4 dot matrix again, the 5*5 dot matrix, and the 6*6 dot matrix is formed, also can be by 4*5,5*6, the row of 9*9 dot matrix and any amount and the matrix of row are formed.The orientation of information module group site can be horizontal rotatio direction, also can be 45 degree sense of rotation, and the arrangement of the various latticed forms of any direction sense of rotation.

Claims (8)

1. implementation method that information is imbedded is characterized in that being being realized by following step:

(1) input becomes the view data acquisition step that information is imbedded the view data of object; And the additional information of will the information of carrying out imbedding obtains step;

(2) additional information is transformed into the half-tone screen code shift step that the possible geometric or physical information of pattern-recognition that possesses printing screen characteristic is simultaneously imbedded the half-tone screen code information module group of code;

(3) above-mentioned information module group is arranged the shading image data that constitute the shading image data and constitute step;

(4) among output step that the view data of above-mentioned input is overlapped with the shading image data or the step of only exporting the shading image data, the new image data output step that is made of one of them step is that the information of feature is imbedded method at least.

2. the implementation method of an information Recognition is characterized in that being being realized by following step:

(1) be embedded with a certain position of the printed images of information by the imageing sensor reading of talking pen, read the information of imbedding printed image data read the printed images step;

(2) the code identification step that the possible geometric or physical information of pattern-recognition of printing the screen characteristic is imbedded code value that possesses in the view data is imbedded in identification;

(3) result with the above-mentioned code value output that identifies exports step.

3. according to claim 1, the characteristic of 2 described printing screens, the characteristic of described printing screen are meant the site interval characteristics of the interval, site of half-tone screen code more than or equal to the displacement field of half-tone screen code site; Carry out arrangement of AM screen or the arrangement of FM screen, at least a site alignment characteristics in the site alignment characteristics that the modes that the arrangement of the site of described half-tone screen code is rotated by 45 degree are arranged respectively according to the site arrangement of printing precision half-tone screen code.

4. the information of the printed images of printed images according to claim 1 is imbedded and the method for information Recognition, it is characterized in that: the code value of the information module group code value of described identification half-tone screen code is the addition by the half-tone screen code value, or multiplication, the code check that at least a verification mode is carried out in same code verification or the parity check system.

5. the information of the printed images of printed images according to claim 1 is imbedded and the method for information Recognition, it is characterized in that: the information module group's of described half-tone screen code information imbed method be the shading that constituted of the information module group by half-tone screen code with the method that printed images overlaps, in the gap of printed images, imbed at least a method in the method for information.

6. the possible geometric information of pattern-recognition according to claim 1 is imbedded code and is meant: in the dot pattern of code constitutes, the distribution of its site dot matrix, it is location mode by diverse location, location mode by different directions, by difform location mode, the location mode of the centralization and decentralization of dot matrix, at least a location mode in the location mode of different dot matrix quantity.

7. the possible physical information of pattern-recognition according to claim 1 is imbedded code and is meant: in the dot pattern of half-tone screen code constitutes, the distribution of its site dot matrix, it is location mode by the out of phase modulation system, different modulating result's location mode, the location mode of different frequency, at least a location mode in the location mode by different direction of transfers.

8. the feature that the possible geometric or physical information of pattern-recognition that possesses printing screen characteristic according to claim 1 is imbedded code is by the 4*4 dot matrix, 4*5, the 5*5 dot matrix, 5*6, the 6*6 dot matrix, the 9*9 dot matrix, promptly horizontally rotate or the various latticed forms of 45 degree rotations in a kind of information module groups of composition constitute.

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