KR101038198B1 - An Information Dot Pattern - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of printing a fine information dot pattern on a printed matter and deciphering the information dot pattern by optical technology, the information dot pattern suiting the purpose, flexibly designing, and a method of applying the same.

The unit information dot pattern according to the present invention is an information dot pattern representing one piece of information provided to a printable object, and is a center of a rectangular information cell to represent the piece of information. It is provided with a virtual rectangular central cell (Central Cell) of the size that can arrange one dot in the cell, and has a cell belt (Cell Belt) surrounding the central cell with cells of the same size as the central cell, the center A DL dot in the center of one or more of the cells at a certain distance on the diagonal line by selecting one of four diagonal directions from the center point, with the point where the diagonal lines connecting the vertices of the cell meet as a center point on the two-dimensional plane. This is done by arranging (Direction-Level Dot).

Unit information dot pattern, information cell, DL dot, center cell, cell belt, data block

Description

Unit Information Dot Pattern Structure

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of printing a fine information dot pattern on a printed matter and deciphering the information dot pattern by optical technology, the information dot pattern suiting the purpose, flexibly designing, and a method of applying the same.

In the conventional method of designing a dot pattern in this field, the criterion of whether the fine dot pattern form is visible or invisible to the human eye has become an important index.

First, how much information can be stored in a given size while making a two-dimensional dot pattern form visible? Can you recover from errors caused by distortion or substrate loss? Can you standardize in many business areas? Many inventions have been made in accordance with such standards. Typical examples in this area include Maxi Code, DataMatrix Code, PDF417 and QR Code.

Also, is it possible to contain a lot of information in a small area by making the two-dimensional dot pattern form invisible to the eye? Can you extract that information? Can you recover from errors caused by printing errors or distortion of the print media? Invention related to the above has been made. Representative examples of this field include an information input / output method using a dot pattern and a graphic indicator.

Dot pattern design is very important in the application technology of printing fine information dot pattern on printed matter and deciphering the information by optical technology. The design of such a dot pattern may be different depending on visibility, unit area, dot size, dot interval, information amount, error recovery, photographing range, application range, and the like. In addition, since these design variables are in conflict with each other, finding an optimal dot pattern design method requires a high level of skill.

In particular, it is necessary to devise an optimal dot pattern design method suitable for an application area by optimizing a trade-off between variables such as visibility, unit area, number of dots, information amount, error recovery, and application range. For example, in order to increase the amount of information using a dot pattern in a predetermined unit area, more dots representing information will be required, which results in many dots becoming more visible and deteriorating visibility. In addition, in order to make the dot pattern used for the unit area invisible, information must be represented with a small number of dots, so that the amount of information is relatively reduced. In addition, the optimal dot design for all applications can not be made in only one method, there is a need for a method that can change the optimal design method according to the application.

4 is a flowchart for explaining an example of one implementation of the present invention. Referring to FIG. 4, the application to be applied in the present invention is defined 41 and the variables and weights 42 to be determined in the defined application are determined. In this way, the unit information dot pattern can be generated 43 according to the design method of the dot pattern suitable for the application field, and the unit information dot patterns are printed 44 on the object 51 for application to the application field. The printed unit information dot patterns are extracted 45 through the optics 53, and the extracted images are interpreted through an image process algorithm 46. The analyzed unit information dot pattern image is informationized and transmitted to a wired or wirelessly connected output device 47, and the output device expresses 48 according to the received information. In order to display the information repeatedly, the pattern image extraction 45 is repeated 49.

5 shows an embodiment of an application field. According to FIG. 5, the unit information dot pattern 52 is printed on the object 51 together with the unit information dot pattern 52 which is invisible and the expression forms (for example, puzzle and puzzle picture) that can be interpreted by the eye. (52) The interpreted information is transmitted to various output devices 54 and 56 through the device 53 for extracting and interpreting an image, and each output device is applied in the form of a system that is output according to the input information signal.

2 is a modeling problem to be solved in the present invention (Modeling). According to FIG. 2, an object of the present invention is to provide a dot pattern design method capable of minimizing visibility, maximizing information amount, and arranging patterns to enable various applications. In order to reduce the complexity of the problem and solve it in a realistic manner, constraints are assumed.

When forming a single unit information dot pattern using fine dots, the visibility is more noticeable when there are more dots in a predetermined area, when the dots are adjacent to each other, when they have a constant pattern, and when the size of the dots is larger. It is common for the visibility to increase.

The amount of information that can be expressed in the unit information dot pattern can represent more information in a predetermined area according to the number of dots used in the unit information dot pattern, a meaningful arrangement of one dot, and the relationship between the dots.

According to the design method of the unit information dot pattern, when the area of the unit information dot pattern to be expressed is enlarged, only the expanded portion can be easily extended by giving the relationship of the new dots, or the information can be created in various forms of hierarchies. In addition, it should be possible to apply both visible and invisible dot patterns at the same time to be applied to more applications.

Since the three individual objective functions are in conflict with each other, it is possible to derive an optimization of the overall objective function by giving a weight according to the purpose and characteristic of the application field.

In addition, it should be possible to recover the errors due to the elasticity of the object printing a fine dot pattern, bending and distortion of the optics and printing errors.

The unit information dot pattern according to the present invention is an information dot pattern representing one piece of information provided to a printable object, and is a center of a rectangular information cell to represent the piece of information. It is provided with a virtual rectangular central cell (Central Cell) of the size that can arrange one dot in the cell, and has a cell belt (Cell Belt) surrounding the central cell with cells of the same size as the central cell, the center A DL dot in the center of one or more of the cells at a certain distance on the diagonal line by selecting one of four diagonal directions from the center point, with the point where the diagonal lines connecting the vertices of the cell meet as a center point on the two-dimensional plane. This is done by arranging (Direction-Level Dot).
Here, the selbelts form another helical belt that continuously surrounds the selbelts radially extending to the entire information cell, and the unit information dot pattern is arranged by arranging dots according to a predetermined rule in a specific cell or a cell in the selbelt. It is made, and characterized in that for determining the direction and location of all the cells and dots in the two-dimensional unit information dot pattern using the center point and the DL dot provided in this way.
Here, the cell belt has 8 * n (n is a positive integer) based on the cell belt surrounding the center cell, and has the characteristic of arranging dots to extend the entire information cell.
Here, the unit information dot pattern has a predetermined rule for cells constituting the cell belt provided in the outermost part of the information cell to distinguish each unit information dot pattern when a plurality of neighboring unit information dot patterns are gathered. It is desirable to arrange identification dots at intervals.
Here, the DL dot is preferably implemented so that one or more DL dots can be arranged in an empty cell without the cell in which the DL dot is arranged among the diagonal cells leading to the vertex of the information cell.
Here, it is preferable that the DL dots do not arrange additional dots other than DL dots other than the DL dots in the cells forming the diagonal of the information cell.
The cell belt is divided into data blocks with a predetermined rule, and the dots for representing information or data are arranged in units of the cell belt or data block.
In this case, it is preferable that the cells in the cell belt or data block are determined in order and position, and that the order and position are also determined among several cell belts or data blocks.
Here, the selbelts or datablocks may be merged with two or more selbelts or datablocks, which may be neighboring and ordered to each other, into a single celbelt or datablock, and the merged selbelts or datablocks are in turn selbelts or data. It has a feature that can be divided into blocks.

Through the method of designing the unit information dot pattern representing the unit information of the present invention, simultaneously considering the visibility, the amount of information and the flexibility of application, and changing the importance according to the importance of individual factors, the optimum unit according to the needs and demands of the industry You can now create information dot patterns.

In addition, errors due to optical distortion, bending and stretching of the object can be easily and quickly corrected without using additional dots.

In addition, the same design method and analysis algorithm can be used even when the unit information dot pattern, which must be visible or invisible, can be easily applied to various applications.

The present invention overcomes the limitations of the prior art and relates to a design method and application of a two-dimensional dot pattern that can be applied to more applications. FIG. 1 schematically shows a plurality of unit information dot patterns 11 arranged in accordance with one embodiment of the present invention. 3 is an enlarged view for explaining in detail the design of the unit information dot pattern 11 proposed in the present invention.

Referring to FIG. 3, an information dot pattern 11 design representing an information provided to the printable object 52 is defined by a rectangular information set to represent the information. A central square cell 31 having a size of a single dot can be arranged in the center of an information cell 30, and the center cell is formed of cells having the same size as the center cell. With a cell belt (33, 38) surrounding, and continuously with the cell belt surrounding the belt, the cell belts radially extend throughout the information cell (30), The information cell is divided into a center cell and cell belts, and each unit information dot pattern is made by arranging dots according to a predetermined rule in a specific cell or a cell in the cell belt.

In addition, the size or area of the information cell may be represented by an array of nxn (n is odd and the number of cells), and the size or area of one cell may be represented by ixj (i, j is length). The center of each cell is the point where the diagonal lines connecting the vertices of the cell meet, and the dots of a certain size arranged in each cell are arranged in the center of the cell 32, so that the position of the dot can be known by knowing the position of the cell. Once the dot location is determined, the cell location is known.

Further, the unit information dot patterns are displayed on the two-dimensional plane, and in order to determine the direction and position of each dot arranged in the unit information dot pattern, the center point of the center cell is defined as the center of the two-dimensional plane coordinates (0,0) (32). ), Select one of four diagonal directions from the center point, arrange dots at the center of one or more cells among cells at a certain distance on the diagonal line, and convert the dot or dot set to It is defined as -Level Dot 36 or DL Dot Set.
As a result, when the center point (0,0) of the two-dimensional plane and the DL dot direction are used as the reference direction, the positions and directions of all the dots or cells for representing the unit information dot pattern can be determined.

In addition, when there are neighboring unit information dot patterns (refer to FIG. 1), the unit information dot pattern indicating one information should be distinguishable. To this end, the DL dot 36 'of the cell belt (that is, the cell belt forming the outline of the information cell) to which the DL dot 36' farthest from the center point among the group of the DL dots 36 defined above is included. As a reference, the identification dots 35 are arranged in a certain rule, in a clockwise direction, along the cells in the cell belt. 3 shows an example in which eight identification dots 35 are arranged, and the number of dots may vary depending on the purpose.

In addition, in the unit information dot pattern 11 representing an information provided to the printable object 52, each data provided to represent information generated by gathering data or data is collected. The cell belts 33 and 38 may be divided into data blocks 34 with a predetermined rule, and are used to represent data or information in units of the cell belts 33 and 38 or data blocks 34. One dot 37 is arranged. The cell belts 33 and 38 are arranged radially with respect to the center cell 31, in which the cell belts 33 and 38 collectively refer to both the nearest cell belt and the outermost cell belt of the center cell 31.

In addition, the cells in the cell belts 33 and 38 or the data block 34 are ordered and positioned (see numbers in the cells in FIG. 3), and also several cell belts 33 and 38 or data blocks ( The order and the position are also defined between the 34 and the single points are arranged in the cells of each of the cell belts 33 and 38 or the data block 34 to represent meaningful data or information.

Referring to FIG. 7, it is possible to combine (71) and divide (72) selbelts or data blocks, and to show how a sequence (72, 73) of selbelts and data blocks after combining and dividing selbelts is determined. Giving. That is, two or more selbelts or data blocks that are neighboring and can be ordered with each other may be combined into one selbelt or data blocks 71 and 72, and the merged selbelts or datablocks may be combined with existing selbelts or data blocks. The data block, the order 73, and the position can be determined, and dots can be arranged in the cell belt or data block to represent another data or information.

In designing such a unit information dot pattern, when the photographing area of the optical device changes large or small, the size of the information cell can be changed at the same time. In this case, one cell is provided at the center of the information cell in the same manner. The cell belt surrounding the cell may be radially extended to include a candidate cell belt for arranging dots. In this case, the cell belt may be one of the design features of the present invention, in which cells constituting the cell belt are expanded to a size of 8 n (n is a positive integer) such as 8, 16, 32, and FIG. The example shows a cell expanded to 21x21.

Referring back to FIG. 3, when describing the unit information dot pattern which is a preferred embodiment of the present invention, in order to represent one unit information dot pattern, an array of 15x15 cells (or unit areas) has a total number of used dots of 20 Nine dots are auxiliary dots, which are used to distinguish individual patterns when neighboring unit information dot patterns are gathered, or to determine the position and direction of dots. Eleven dots were used to represent data to be expressed by the unit information dot pattern or information gathered from the data.
That is, nine auxiliary dots are eight dots (35, 36 ') and one DL dot (36) located at the outermost part of the information cell (30), and eleven dots are patterns in the cells inside the information cell (30). Information is also referred to.

Rather than arranging 11 dots in one unit information dot pattern to represent data or information, 5 can be arranged in units of selbelts (without dividing selbelts into cell blocks) and farthest from the center. Eight data dots can be arranged by dividing only the last selbelt that represents data into four data blocks, or multiple dots can be arranged by dividing the neighboring selbelts into multiple cell blocks. For example, the number of dots for representing data or information may be variously modified to optimize the objective function (FIG. 2). At this time, the basic algorithm (Algorithm) to retrieve the data or information dot to derive the information does not change. However, as the number of data or information dots decreases, the amount of information to be expressed will decrease and increase as it increases.
4 is a flowchart for explaining an example of one implementation of the present invention. Referring to FIG. 4, an application to be applied in the present invention is defined (S41), and variables and weights (S42) to be determined in the defined application are determined. By doing so, the unit information dot pattern can be generated according to the design method of the dot pattern suitable for the application field (S43), and the unit information dot patterns are printed on the object 51 (S44) for application to the application field. The printed unit information dot patterns are extracted through the optical unit 53 (S45), and the extracted images are interpreted through an image process algorithm (S46). The analyzed unit information dot pattern image is informed and transmitted to an output device connected by wire or wirelessly (S47), and the output device expresses (S48) according to the received information. Repeating (S49) is performed from the pattern image extraction (S45) step for the repeated information expression.

A method of retrieving the arranged dots and expressing the information with reference to FIG. 6 will be described. In FIG. 6A, the unit information dot pattern is interpreted in cell belt units from the center of the center cell (0,0). Or by searching 61 for dots arranged sequentially from the center to the outside and clockwise in units of data blocks in the cell belt. According to this search method, data dots were arranged in the second cell (cell number recorded in the cell in each cell belt in FIG. 6) in the first cell belt, and data dots were arranged in the 7th cell in the second cell belt. In the third cell belt, the second cell, the fourth cell belt, and the DL dot 63a are arranged and not searched, the fifth cell belt is composed of four data blocks (one data block consists of nine cells). In the first data block 64a in the eighth cell, in the second data block 64b in the fifth cell, in the third data block 64c in the second cell, and in the fourth data block 64d. ), Data dots are arranged in the 7th cell, and the last cell belt representing data or information is divided into 4 data blocks (each consisting of 11 cells), and in the first data block, in the third cell. .., Yeah In the second data block can be seen that an arrangement of dot data in the third cell. When the dots retrieved in this way are represented by information, 2x7x2x8x5x2x7x3x9x8x3 = 10,160,604.

In the unit information dot pattern of the present invention, when the area (number of horizontal cells x number of vertical cells) is 15x15, and the total number of used dots is 20 (9 auxiliary dots, 11 information dots), 11 data dots The total number of data or information that can be represented by (or the number of cases) is 92,217,216,960 (= 4x12x20x9x9x9x9x11x11x11x11) (one dot is arranged in the cell belt around the center of 11 datadots, which is one of four candidate cells Can be generated in four cases.), So that the information 10,160,604 is one of 92,217,216,960 information.

In addition, in FIG. 6B, the position of the DL dot 63b in the unit information dot pattern may be changed and expressed as another information type. Compared to 6a of FIG. 6, the total number of used dots is equal to 20, and only the positions of the DL dots are changed. In this case, the total number of data or information that can be represented is 129,104,103,744 (= 4x12x28x9x9x9x9x11x11x11x11), and the information represented by 6b is 15,240,960 (= 2x7x3x8x5x2x7x3x9x8x3).

6a of FIG. 6 may represent information consisting of 9x9x9x9x11x11x11x11 (= 96,059,601) members in 4x12x20 (= 960) classes, and 6b may represent 9x9x9x9x11x11x11x11 (= 96,059,601) members in 4x12x28 (1,344) classes. In fact, these two forms can be represented by different information. Therefore, by using the same number of dots, changing the positions of the DL dots 63a and 63b between the center cell and the vertex cells forming one diagonal line can be expressed in different information forms, thereby providing more information. I can express it.

In addition, FIG. 7 extends the area of the unit information dot pattern to 21x21, arranges DL dots 74 in the seventh cell in the diagonal direction from the center cell, and surrounds the cell belts in which the DL dots 74 are arranged. An example of a unit information dot pattern having 24 data blocks 72 consisting of four cells after combining 71 cell belts (the 8th and 9th cell belts) into one is shown.
As shown in FIG. 6, the search method starts with the center cell rotated in the clockwise direction and searches for the cell belt in which the DL dot 74 is present and moves on to the next cell belt without searching. The DL dot 74 shown in FIG. ) From the time point of view, the eighth and ninth selbelts are merged into one selbelt and again have a data block 72 consisting of four cells. Search. In this example, the total number of dots used is 44 (9 subdots, 35 information dots), and the amount of information that can be represented is 3.E + 25.

FIG. 8 is a diagram illustrating a photographing range 81 of an optical device according to the present invention, in which two adjacent unit information dot patterns are represented by a rectangle 82, and one diagonal line 83 connecting vertices of the rectangle. ), The photographing range may be at least one unit information dot pattern included in the photographing range as long as the photographing range is larger than the size of the circle having the diagonal 83 as the diameter.

FIG. 9 illustrates the photographing of the object by using an optical device when there are several neighboring unit information dot patterns 11 provided to the printable object 52 and one of the photographed images 91. This figure explains how to find the unit information dot pattern. In the photographed image 91, in order to distinguish the neighboring pattern, the dot sets arranged in the outer side of the unit information dot pattern are divided and found in the horizontal and vertical directions. The vertical dot set thus found spans the (92) line and the horizontal dot set spans the (93) line. Among them, a rectangular dot set 94 which consists of eight dot pairs in the horizontal and vertical dot sets is found, starting at the same point as the starting point, which belongs to the horizontal and vertical dot sets at the same time. In addition, one or more DL dots 95 are necessarily present on the diagonal of the rectangle, and the DL dots can be used as a reference for determining the direction of the rectangle, so that data or information dots in the unit information dot pattern are fixed. Can be interpreted according to direction and order.

In addition, in the application of the present invention, an error may occur due to a photographing error due to the skew of the lens or an elasticity and curvature of the object. In the design method of the present invention, there may be a number of ways to solve such an error.

Referring to FIG. 10, one method may create a quadrangle 130 near a center point of a photographing area and having one vertex 101 as a vertex of dots of a unit information dot pattern. In this case, it is assumed that the dot position does not constitute a rectangle due to an error, and thus is located at an incorrect position 102. The dot 102 placed at an abnormal position in the conditions constituting the quadrangle is moved 106 to the normal position 103, and the movement distance thereof is moved by (104, 105) on the two-dimensional plane. This shifted result can be corrected by applying (137) all dots in the rectangle 100 in the direction of the dot facing diagonally and proportionally. In order to reduce the amount of calculation, each dot should be located at the center 108 of the predetermined candidate dot cell 109 and determine the moving distance about the rectangular boundary line of the candidate dot cell.

Alternatively, if the photographing area of the optical device is enlarged, a large number of unit information dot patterns can be included in the photographing area, and an error is discarded, and a method of accurately adopting the unit information dot pattern photographed is interpreted. You can also choose.

In addition, referring to FIG. 2, maximizing application flexibility of a partial object function, the unit information dot pattern 11 representing an information provided to the printable object 52 is described. The design may need to make the pattern visible or invisible, or both, depending on the application. In the prior art, the design method has been devised in one direction, but the present invention can be applied to an application in which two types coexist. Referring to FIG. 7, the information area is extended radially from the existing 15x15 array to the 21x21 array by expanding the selbelts, added DL dots, and added 24 data or information dots. Here, the method of adding 24 information dots had no effect on the method of designing and analyzing the unit information dot pattern formed by the 15x15 array. Also, the information amount (3.E + 25) can be increased in proportion to the 24 information dots added. This is a design method that can devise a method of arranging separate information dots for each additional information area, which can be applied to many fields because it can have flexibility in industrial applications.

The originality, progress, and industrial applicability of the unit information dot pattern design method of the present invention are described as follows.

With reference to FIG. 11, the present invention 11a is compared with the prior arts 11b and 11c by way of numerical examples.

For the present invention (11a):

Unit information area (number of horizontal cells x number of vertical cells): 15x15

Total dot count (20) = auxiliary dot (9) + data dot (11)

Volume of information (92,217,216,960) = 4x12x20x9x9x9x9x11x11x11x11

Effective data dot ratio (55%) = 11 / 21x100 (when using 21 dots)

Effective data dot ratio (64%) = 16 / 25x100 (when 4 dots of data are added to equal 11b and the total number of dots used)

In case of the prior art 11b:

Unit information area (number of horizontal cells x number of vertical cells): 15x15

Total Dots Used (25) = Secondary Dots (9) + Data Dots (16)

Volume of information (4,294,967,296) = 4 ¹⁶

Effective data dot ratio (64%) = 16 / 25x100

In case of the prior art 11c:

Unit information area (number of horizontal cells x number of vertical cells): 17x17

Total Dots Used (41) = Secondary Dots (25) + Data Dots (16)

Volume of information (4,294,967,296) = 4 ¹⁶

Effective data dot ratio (39%) = 16 / 41x100

With reference to these results, the unit area required to represent the unit information is 11a and 11b is equal to 15x15, 11c is 17x17 due to the characteristics of the prior art. This may be inferior in terms of unit area if 11c shows the same result in different variables as compared to 11a and 11b, since the area required for one unit dot pattern should be larger.

In addition, when comparing the total number of used dots, 11a is 20, 11b is 25, and 11c is 41. In general, the smaller the number of dots used in one unit information dot pattern, the more the visibility is generally minimized. In view of visibility, 11a is the best design method.

In addition, when comparing the amount of information, it can be seen that 11a is 92,217,216,960 pieces of information that can be represented, and 11b and 11c are 4,294,967,296 pieces, so that the present invention can express a lot of information. In addition, although the number of dots representing information in the total number of used dots is 11a, and 11b and 11c are 16, the prior art was more, but the amount of information was superior to the present invention. That is, more information can be expressed using fewer dots, and even when the same information is displayed, the number of dots to be used can be reduced, thereby reducing the visibility.

In addition, when the effective data dot ratio is compared, the effective data dot ratio is an index indicating a ratio of dots representing information or data to a total number of dots used to have one unit information dot pattern. The larger it is, the more efficient design method for expressing information or data, and 11a and 11b are the same as 64%, and 11c is 39%, and 11c is relatively inefficient design method for representing information. Further, when the size of the information cell is further expanded (example of 21x21 in FIG. 7), 11c is constant at 39%, 11a is 80% (= 35 / 44x100), and 11b is 73% (= 36 / 49x100), it can be seen that as the size increases, 11a is superior to the effective data dot ratio in terms of the effective data dot ratio. In this case, each of the information amount is 11E is 3.E + 25, 11b is 5.E + 21 it can be seen that the present invention is excellent.

In addition, the purpose of minimizing visibility is that the information to be transmitted to the printable object 51 is visible (the shape or color of the text or puzzle picture, such as Puzzle of (51)) and the invisible Things (the fine dot patterns 52) coexist, so that a fine dot pattern that is intended to be invisible may deteriorate visible information. The less the degree of deterioration, the better the dot pattern design, which is said to have low visibility. Factors affecting the visibility of the dot pattern include the number of dots used in the dot pattern, the affinity of the dot pattern (a degree of neighboring between the dots or a constant pattern formed by the dots), and the size (or thickness) of the dots. There may be.

In addition, the size of the dot among the three factors affecting the visibility is a factor that can be solved by an optical technique or a printing technique, rather than being solved by the design method, the size (or thickness) of the dot in the present invention is not considered. It is assumed to be constant.

In addition, with regard to the intimacy of the dot pattern, the dots used in one unit information dot pattern (or among all the dots in which several neighboring unit information dot patterns coexist together) are recognized as large chunk dots adjacent to each other, This phenomenon can also degrade the information that must be seen. In order to prevent such a phenomenon, the dots represented in the predetermined area as possible do not have a specific pattern, and the more uniformly distributed, the more minimized the visibility.

The dot arrangement method adopted in the design method of the present invention is to extend the area uniformly radially with respect to the center point of the information area representing one piece of information, and to divide each area evenly in all directions, Dots were arranged in proportion to the size of the area of the region. Therefore, in the design method of the present invention, it can be said that dots representing information are evenly distributed in the radial direction of the information area. For example, the cell belt surrounding the center cell has cells in which four information dots can be arranged, and dots are arranged only in one of them, and 44 information dots can be arranged in the sixth cell belt made from the center cell. There is a cell, and the cells are divided into 11 units in four directions and dots are arranged in one of the cells to prevent the information dots from being concentrated. In addition, by not arranging the information dots in the cell belt including the DL dots, the information dots can be alleviated from being concentrated in a straight line from the center.

In addition, there is a need for a design method that can be applied to various industries and can be extended. For the present invention, when the unit information dot pattern is expanded, the contents before expansion are not changed, and thus, the method of adding only the extended portion can be taken. In other words, it was found that the more the unit information area is extended, the more advantageous it is than the prior art.

In the comparison between the present invention 11a and the prior arts 11b and 11c, comparison was made based on the unit information area, the number of dots, the amount of information, the effective data dot ratio, the intimacy and the application capability. As a result, the design method of the present invention was found to be the same or superior to the prior art.

In addition, in applying the present invention, an object of the present invention (see Fig. 2) is to minimize the visibility, to maximize the amount of information, to maximize the industrial applicability or expandability, and the three objectives are mutually conflicting In the relationship, after finding a way to optimize each individual objective, the conflict between the individual objective functions is analyzed by analyzing the industrial applications, and the importance of the three objective functions (P (V), P in Fig. 2). The value of (I) and P (A)) can be derived and trade-off to be applied in practice.

1 is an enlarged view illustrating an example of a unit information dot pattern of the present invention.

2 is a modeling problem to be solved in the present invention (Modeling).

3 is an enlarged view illustrating a unit information dot pattern of the present invention.

4 is a flowchart illustrating one implementation step of the present invention.

5 is a schematic view for explaining an embodiment of the present invention.

6 is an enlarged view for explaining a unit information dot pattern of the present invention.

7 is an enlarged view for explaining a unit information dot pattern of the present invention.

8 is an enlarged view for explaining the application of the present invention.

9 is an enlarged view for explaining the application of the present invention.

10 is an enlarged view for explaining the application of the present invention.

11 is an enlarged view for comparing the present invention with the prior art.

Claims (9)

A unit information dot pattern structure representing one piece of information provided to a printable object. A virtual square cell having a size capable of arranging one dot at the center of a rectangular information cell to represent one piece of information; It has a cell belt (Cell Belt) surrounding the central cell with cells of the same size as the central cell, With the point where the diagonal lines connecting the vertices of the center cell meet as the center point on the two-dimensional plane, one of the four diagonal directions from the center point is selected to select one of the cells at the center of one or more cells of a certain distance on the diagonal By arranging DL-dots (Direction-Level Dots), Search for data dots arranged from the center to the outward direction along the cell belt based on the center cell, and do not search the cell belt in which the DL dots are arranged, and calculate the cell number where the searched data dot is located and express the information. Unit information dot pattern structure. The method of claim 1, The selbelts continuously form other selbelts that surround them so that the selbelts extend radially throughout the information cell, thereby forming the unit information dot pattern by arranging dots according to a predetermined rule in a specific cell or a cell in the selbelt. And determining the direction and position of all cells and dots in the two-dimensional unit information dot pattern by using the center point and the DL dot. The method of claim 2, The cell belt is a unit information dot pattern structure that can be arranged to extend the whole of the information cell by 8 * n (n is a positive integer) on the basis of the cell belt surrounding the center cell. The method of claim 1, In the unit information dot pattern, when a plurality of neighboring unit information dot patterns are gathered, the unit information dot pattern has a predetermined rule and intervals in cells constituting the cell belt provided at the outermost side of the information cell to distinguish each unit information dot pattern. A unit information dot pattern structure in which identification dots are arranged. The method of claim 1, The DL dot structure unit pattern dot pattern structure that can arrange one or more DL dot in an empty cell without the cell in which the DL dot is arranged among the diagonal cells leading to the vertex of the information cell. The method of claim 5, And wherein the DL dots do not arrange additional dots other than DL dots in cells forming a diagonal of the information cell. The method of claim 1, The cell belt is divided into data blocks with a predetermined rule and arranges dots for representing information or data in units of the cell belt or data block. The method of claim 7, wherein The cells in the cell belt or data block are ordered and positioned, and the order and position are also determined between a plurality of cell belts or data blocks. The method of claim 8, The selbelts or datablocks may be merged into two selbelts or datablocks, which may be neighboring and ordered to each other, into a selbelt or datablock, and the merged selbelts or datablocks back into the selbelts or datablocks. A unit information dot pattern structure that can be divided.

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