JP2010026665A - Two-dimensional code - Google Patents

Abstract

A QR code having high design properties is provided.
A two-dimensional code includes a data pattern 25 that expresses data represented by a binary code by shades of color for each divided cell, and a marker pattern 21 for specifying the position of the data pattern 25. A symbol area 23 generated by being arranged at a predetermined position on a three-dimensional matrix, a background pattern 27 drawn on the background side of the symbol area 23, a stroke pattern 29 drawn on the foreground side of the symbol area 23, and an arbitrary figure Alternatively, the data pattern 25 is generated by superimposing the logo image 15 on which the organization name is displayed, and the data pattern 25 is configured to include cells 4 in which the area colored in dark color is smaller than the area of a single cell, The marker pattern 21 is composed of an asymmetric figure.
[Selection] Figure 1

Description

  The present invention relates to a two-dimensional code having excellent design properties.

  2. Description of the Related Art Conventionally, two-dimensional codes are known that record data by arranging square cells (modules) colored in white or black in two dimensions based on predetermined format information. A two-dimensional code can increase the amount of information that can be recorded as compared to a one-dimensional code (for example, a barcode). QR code (registered trademark: DENSO WAVE) is known as such a two-dimensional code standard (see Patent Document 1 and Non-Patent Document 1).

  However, as shown in FIG. 7, a normal QR code records information by an array of modules (cells) colored in light color (white) or dark color (black). Can not do it. For this reason, there is a concern that the design quality of an advertisement medium or a product container attached with a QR code may be deteriorated by giving a tasteless and dry impression.

Therefore, the design of the QR code itself is improved without affecting the reading by the QR code scanner by superimposing an image such as a logo mark formed using only the chromatic color identified as a light color on the QR code. A technique is disclosed (for example, see Patent Document 2).
Also, a technique is disclosed in which an image is synthesized in a symbol area of a QR code by using a cell that is not used for recording QR code data to improve designability (see, for example, Patent Document 3). .

Japanese Patent No. 2938338 JP 2006-302050 A Japanese Patent No. 3957734 Japanese Industrial Standards JIS X0501: 2004

  However, in the technique of Patent Document 2, since the synthesized image is expressed in a light color, the shades colored in individual cells are conspicuous, and the impression received from the entire produced QR code is not necessarily a dry taste. Could not be wiped out. Further, in the technique of Patent Document 3, an image image can be expressed in a symbol area, but the size of an image image that can be synthesized to express using only cells that are not used for data recording is as follows. There are cases where it is difficult to add sufficient design properties due to limitations.

  In view of the above problems, an object of the present invention is to provide a two-dimensional code having higher designability and added value.

  According to the two-dimensional code according to claim 1, the problem is to specify a data pattern that expresses data represented by a binary code by coloring shades of each divided cell, and a position of the data pattern. Is a two-dimensional code generated by arranging the marker pattern at a predetermined position on a two-dimensional matrix, and the data pattern has a dark colored area smaller than the area of a single cell The marker pattern is solved by being composed of an asymmetric figure.

  In this way, the data pattern configured to have cells that are darker than the area of a single cell and the marker pattern configured of asymmetric figures are arranged at predetermined positions. The QR code can be composed of figures composed of curves or asymmetric diagrams instead of figures composed of straight lines. Thus, a tasteless and dry impression can be wiped off, and a two-dimensional code having higher design properties can be obtained.

  According to the two-dimensional code according to claim 2, the problem is to specify a data pattern that expresses data represented by a binary code by color shading of each divided cell, and a position of the data pattern. A two-dimensional code generated by superimposing a symbol area generated at a predetermined position on a two-dimensional matrix and a background pattern drawn on the background of the symbol area. The data pattern is configured so that a dark colored region has cells smaller than the area of a single cell, the marker pattern is configured by an asymmetric figure, and the background pattern is light colored. The problem is solved by being colored and arranged in a range overlapping at least a part of the symbol area.

  In this way, a data pattern composed of cells whose dark colored areas are smaller than the area of a single cell and a marker pattern composed of asymmetric figures are arranged at predetermined positions and generated. The two-dimensional code is generated by superimposing the symbol area to be colored and the background pattern arranged in a light color and overlapping with at least a part of the symbol area, so that data can be read, and The symbol area can be constituted by a figure composed of a curve or an asymmetric diagram, and an arbitrary image pattern can be drawn on the background of the symbol area. Therefore, it is possible to wipe off the tasteless dry impression from the entire two-dimensional code, and it is possible to add visual information by the background pattern, and to obtain a two-dimensional code having higher design properties.

  According to the two-dimensional code according to claim 3, the problem specifies a data pattern that expresses data represented by a binary code by color shading for each divided cell, and a position of the data pattern. A two-dimensional code generated by superimposing a symbol area generated by arranging a marker pattern at a predetermined position on a two-dimensional matrix and an image pattern not including data represented by a binary code The data pattern is configured so that a dark colored region has cells smaller than the area of a single cell, the marker pattern is configured with an asymmetric figure, and the image pattern is: It consists of a background pattern drawn on the background side of the symbol area and a stroke pattern drawn on the foreground side of the symbol area, and the background pattern is The stroke pattern is arranged in a range that overlaps at least a part of the symbol area, and is disposed in a range that overlaps at least a part of the symbol area. Is solved.

  In this way, a data pattern composed of cells whose dark colored areas are smaller than the area of a single cell and a marker pattern composed of asymmetric figures are arranged at predetermined positions and generated. And a background pattern arranged in a range that overlaps at least a part of the symbol area and is colored in a light color or a dark color and that overlaps at least a part of the symbol area. The two-dimensional code is generated by superimposing the arranged stroke pattern, so that the data can be read, and the symbol area can be constituted by a figure composed of a curve or an asymmetric diagram. Any image can be drawn on the background and foreground of the symbol area. Therefore, it is possible to wipe off a dry and dry impression from the entire two-dimensional code, and it is possible to add visual information by the background pattern and the stroke pattern, and to obtain a two-dimensional code having higher design properties. .

  According to the two-dimensional code according to claim 4, the problem specifies a data pattern that expresses data represented by a binary code by color shading of each divided cell, and a position of the data pattern A symbol area generated by placing a marker pattern at a predetermined position on a two-dimensional matrix, an image pattern not including data represented by a binary code, and an arbitrary figure or group name are displayed A two-dimensional code generated by superimposing a logo image on the data pattern, wherein the data pattern is configured to include a cell whose dark colored area is smaller than the area of a single cell, and the marker The pattern is composed of asymmetric figures, and the image pattern is drawn on the background side of the symbol area and on the foreground side of the symbol area. The background pattern is colored in a light color and is disposed in a range overlapping at least a part of the symbol area or the logo image, and the stroke pattern is colored in a light color or a dark color. In addition, the problem is solved by being arranged in a range overlapping at least a part of the symbol area or the logo image.

  In this way, a data pattern composed of cells with darker colored areas smaller than the area of a single cell and a marker pattern composed of asymmetric figures are placed at predetermined positions and generated. And a background pattern arranged in a range that overlaps at least a part of the symbol area and is colored in a light color or a dark color and that overlaps at least a part of the symbol area. A two-dimensional code is generated by superimposing a stroke pattern to be placed and a logo image on which an arbitrary figure or group name is displayed, so that data can be read, and from a curve or an asymmetric diagram The symbol area can be configured by the configured figure, and any image can be drawn on the background and foreground of the symbol area. Kill. Therefore, it is possible to wipe off the tasteless dry impression from the whole two-dimensional code, and it is possible to add visual information by the background pattern, stroke pattern and logo image, and to obtain a two-dimensional code having higher design properties be able to.

Specifically, as in claim 5, in the data pattern, a part of the cells colored in light color is colored in dark color, and a boundary portion between regions colored in dark color is colored in dark color. It is preferable to have a colored part.
In this way, the two-dimensional code has a data pattern in which a part of the cells that are colored in light color is colored in dark color, and a boundary part between regions that are colored in dark color has a part that is colored in dark color. By being configured, it is possible to visually give an impression different from the conventional one to the two-dimensional code, and it is possible to obtain a two-dimensional code having higher design properties and added value.

According to a sixth aspect of the present invention, it is preferable that the marker pattern has a graphic included in the logo image.
With the above configuration, since a marker pattern having a logo image can be used as a component of a two-dimensional code, a two-dimensional code having higher design and added value can be obtained.

Specifically, as in claim 7, in the data pattern or the marker pattern, the brightness of the color colored at the boundary between the lightly colored region and the darkly colored region is continuous. It is preferable to change.
With the above configuration, the boundary between the lightly colored region and the darkly colored region can be made unclear, so it is possible to visually give a different impression to the two-dimensional code, and a higher design. A two-dimensional code having sex and added value can be obtained.

According to the first to fourth aspects, since it is possible to wipe off a dry and dry impression from the entire two-dimensional code and to add visual information, it is possible to obtain a two-dimensional code having higher design properties. it can.
According to the fifth aspect, a visually soft impression can be given to the two-dimensional code, and a two-dimensional code having higher design and added value can be obtained.
According to the sixth aspect, since information such as a group name can be visually added, a two-dimensional code having higher designability and added value can be obtained.
According to the seventh aspect, a visually soft impression can be given to the two-dimensional code by blurring the boundary between the lightly colored region and the darkly colored region. Can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the gist of the present invention.

  1 to 6 show an embodiment according to the present invention, FIG. 1 is an explanatory diagram showing a QR code, FIG. 2 is an exploded view of a pattern constituting the QR code, and FIG. 3 is another configuration example of a background pattern, FIG. 4 is another configuration example of the data pattern, FIG. 5 is another configuration example of the marker pattern, and FIG. 6 is another configuration example of the stroke pattern. FIG. 7 is an explanatory diagram showing an example of a conventional type 1 QR code.

First, based on FIG.1 and FIG.2, the structure of QR Code 1 which concerns on embodiment of this invention is demonstrated.
The QR code 1 is formed as a single piece by superimposing a data pattern 25, three marker patterns 21, an image pattern, and a logo image 15. The image pattern includes a background pattern 27 and a stroke pattern 29.
The QR code 1 according to the present embodiment is configured as a 1-type QR code whose symbol area is composed of 21 × 21 cells, but it is needless to say that the QR code 1 can be applied to other types.

Here, the configuration of the conventional type 1 QR code 101 will be described (see FIG. 7 and JIS X0501: 2004).
A typical QR code has a symbol area 3, which includes a coding area 5 and a functional pattern in which square cells 4 are arranged in an intrinsic square array, and a quiet zone surrounding them. 9.

The functionalization pattern is configured as a combination of the position detection pattern 11 and the separation pattern 12.
The encoding area 5 is used for encoding data other than the functional pattern and for error correction codewords.
As described above, the quiet zone 9 is a white or light-colored area surrounding the four sides of the area composed of the coding area 5 and the functionalized pattern 7, and distinguishes the type 1 QR code 101 from the surrounding pattern. .
The cell 4 is a unit cell constituting the symbol area 3, and one bit corresponds to one cell.

The position detection pattern 11 is a pattern composed of predetermined figures arranged at three of the four corners of the symbol area 3, and as shown in FIG. 7, the module width of each position detection pattern 11 is in the X direction. , And Y direction are typically composed of dark-light-dark-light-dark rows having a ratio of 1: 1: 3: 1: 1.
Further, the periphery of the position detection pattern 11 is surrounded by a white (light color) separation pattern for distinguishing from the encoding region.

Next, the reading accuracy of the QR code 1 will be described.
In the algorithm for reading the position detection pattern 11, the allowable value of the codeword reading width is 0.5. That is, a range of 0.5 to 1.5 is allowed for a module composed of one cell 4, and a range of 2.5 to 3.5 is permitted for a module composed of three cells 4. Thus, even when a certain amount of distortion occurs in the image, the decoding software can reconstruct the coordinate map of the image at the time of reading.

Similarly, in the algorithm for reading the cell 4 in the coding area 5, the width and size of the readable cell 4 have an allowable value, and the coordinate map is used even when a certain amount of distortion occurs in the read image. It is possible to reconfigure.
In addition to the data block that displays the encoded data, the encoding area 5 is provided with an error correction block that displays data for correcting the reading error of the code word. By this error correction block, The codeword in the symbol area 3 can be restored up to 30%.

Below, each of the data pattern 25, the marker pattern 21, the background pattern 27, the stroke pattern 29, and the logo image 15 which comprise QR Code 1 in this embodiment is demonstrated.
A data pattern 25 shown in FIG. 2A corresponds to the encoding area 5 described above, and is an area in which data is encoded as an array of cells 4 colored light or dark. Here, since an allowable value is provided in the algorithm for reading the cell 4 array in the coding area 5 as described above, the cell 4 can be read without being colored. That is, it is not necessary to color each of the regular tetragonal cells 4 divided into 21 × 21 (in the case of 1-type QR code) sections. If the central portion of each cell 4 is colored in a dark color or a light color exceeding a predetermined threshold value, the encoded data can be read.
The central portion of each cell 4 is a region of about 30% with respect to the area of the cell 4 with the central portion of each cell 4 as the center, but the area of about 10% with respect to the area of the cell 4 Even if it is, reading may be possible.

In the present embodiment, at least the central portion of the predetermined cell 4 is colored in dark color, while the gap between the dark colored central portions of the cell 4 is similarly connected in dark color to form a geometric pattern is doing. At this time, even if the cell 4 is lightly colored, the pattern of the data pattern 25 is made continuous and designable with a sense of unity by coloring the edge portion excluding the central portion as dark as necessary. It is excellent. In addition, the dark color to be colored is applied to two different colors to further improve the design. Of course, if it is a dark color exceeding the threshold value at the time of reading, it can be colored using more colors.
Thus, by configuring the data pattern 25, the design of the coding area 5 is improved while the data can be read.

  Considering data restoration by error correction, it is possible to restore data codeword reading errors up to a predetermined rate. Therefore, in the production stage of the data pattern 25, the center portion of the cell 4 is colored up to a predetermined amount. Even if it is colored in an arbitrary color, accurate data can be read as the entire QR code, and the design can be further improved.

  The marker pattern 21 in the present embodiment shown in FIG. 2B corresponds to the position detection pattern 11 described above. Since the algorithm for reading the position detection pattern 11 has an allowable value of 0.5 for each pattern, the module width ratio of each position detection pattern 11 is 0.5 to 1.5: 0.5 to 1. .5: 2.5 to 3.5: 0.5 to 1.5: reading within the range of 0.5 to 1.5 can be normally read. Further, since the position detection pattern 11 is detected based on the module width ratio, the position information can be read even if the shape of the position detection pattern 11 is not an accurate square or similar figure.

  In the present embodiment, the marker pattern 21 is appropriately changed within the range of the module width ratio described above to improve the design. Specifically, the outer frame 21a (corresponding to the outer frame 11a of the position detection pattern 11) colored in the dark color of the marker pattern 21 is designed as a complex, refracted, substantially rectangular frame with a varying width. . Further, by changing the shape of the dark portion of the central portion 21b of the marker pattern 21 (corresponding to the central portion 11b of the position detection pattern 11), the marker pattern 21 as a whole does not form a concentric similar figure. It is composed of asymmetric figures. Specifically, it is configured as a figure that does not have line symmetry with respect to the X direction or the Y direction, or a figure that does not have rotational symmetry. In this way, by configuring the marker pattern 21 from an asymmetric figure, it is possible to wipe off the tasteless dry impression and to make more various expressions, and to improve the design.

  The background pattern 27 in the present embodiment shown in FIG. 2C is an image colored by a light color that does not exceed a threshold value at the time of reading, and an arbitrary image is drawn. Since the drawing is performed using only light colors that do not exceed the threshold value at the time of reading, there is no influence on reading of the encoding region 5 and the position detection pattern 11. Since there is no restriction on the range in which the background pattern 27 can be superimposed, the background pattern 27 can also be superimposed on the quiet zone 9. Therefore, it is possible to select a background pattern that is integrated with the design of the advertising medium, the product, or the product container on which the QR code 1 is displayed. Of course, a plurality of colors may be used as long as the color is light.

  The stroke pattern 29 in this embodiment shown in FIG. 2D is a pattern that is superimposed as a foreground of the data pattern 25 and the marker pattern 21, and is drawn using a light color or a dark color. Specifically, it is a thin linear or spotted pattern drawn meandering. By arranging so as not to affect the reading of the data pattern 25 and the marker pattern 21, it is possible to add an accent to the design of the QR code 1, thereby further improving the freedom of design and expressive power. .

  Further, the logo image 15 in the present embodiment is composed of a logo mark 15 a and a logo type 15 b as figures arranged on the upper side of the QR code 1. Since it is arranged above the symbol area 3 with the quiet zone 9 in between, it does not affect the reading of the data of the QR code 1, but affects the design of the QR code 1. For example, a logo mark 15a such as a mark or a character and a logo type 15b representing a group name can be arranged in combination. Note that a portion of the logo image 15 that is configured in a light color does not affect the reading accuracy, and therefore may be disposed in the quiet zone 9.

The QR code 1 is generated by superimposing each of the data pattern 25, the marker pattern 21, the background pattern 27, the stroke pattern 29, and the logo image 15 produced as described above.
At this time, a symbol area 23 composed of the data pattern 25 and the marker pattern 21 is arranged on the front side of the background pattern 27, and a stroke pattern 29 is arranged on the front side thereof, and an arbitrary logo is arranged on the upper side of the symbol area 23. The QR code 1 is completed by arranging the image 15.

  As described above, by configuring the QR code 1, data can be read without hindrance, and a symbol area can be configured around a figure composed of curves, and the background and foreground of the symbol area can be used. An image pattern such as an arbitrary background pattern 27 or stroke pattern 29 can be drawn. Therefore, it is possible to wipe off the tasteless dry impression from the entire two-dimensional code, and it is possible to add information that can be conceived through human vision by the background pattern 27, the stroke pattern 29, and the logo image 15. Design information is improved by visual information, and added value can be improved.

3 to 6 show other configuration examples of the background pattern 27, the data pattern 25, the marker pattern 21, and the stroke pattern 29 that constitute the QR code 1 described above.
The QR code 2 can be configured by selecting and overlaying an arbitrary data pattern 26, marker pattern 22, background pattern 28, and stroke pattern 30 from the respective configuration examples shown below. As for the background pattern 28 and the stroke pattern 30, a plurality of patterns may be selected and superimposed. Of course, an arbitrary logo image 15 may be arranged.

  FIGS. 3A to 3D show other configuration examples of the background pattern 28. If the background pattern 28 is colored only by a light color that does not exceed the threshold value for reading, it does not affect the reading of data. For this reason, it can be configured in an arbitrary size and shape regardless of the size of the symbol area 24. For example, it can be a circular shape, a star shape, an indeterminate shape, a character, a character, etc. Any color can be used as long as it does not exceed the threshold value for reading. Further, if the product or the packaging container is light color, the product or the packaging container may be used as it is as a background.

4A to 4D show other configuration examples of the data pattern 26. FIG. Since the data encoded in the data pattern 26 can be read if the central portion of each cell 4 is colored in a dark or light color exceeding a predetermined threshold value, any design other than the central portion of each cell 4 can be read. Can be applied. For example, a colored deep color is connected to the central portion of the adjacent cell 4 to form a shape such as a needle shape, a bow shape, a circular shape, an elliptical shape, a rhombus shape, a flower shape, a star shape, an indefinite shape, or a geometric pattern Can be expressed.
Further, the brightness at the boundary between the dark color and the light color may be continuously changed. Since the boundary between the lightly colored area and the darkly colored area can be made unclear, a visually soft impression can be given to the two-dimensional code, and higher designability and added value can be improved. Can be achieved.

FIGS. 5A to 5H show other configuration examples of the marker pattern 22. The shape of the marker pattern 22 can be arbitrarily changed within the allowable range of the algorithm for performing position detection.
Further, since the position of the marker pattern 22 is detected at the center coordinates of the widths in the X and Y directions that satisfy a predetermined module width ratio, the marker pattern 22 is drawn in a dark color that satisfies the predetermined module width ratio. If the pattern is configured in each of the X direction and the Y direction, position detection is normally performed.

Specifically, in the marker pattern 22, the outer frame 22a colored in a dark color can be transformed into a frame having a shape other than a quadrangle, and can be a frame of a substantially rhombus, a substantially circle, an indefinite shape, or the like. it can.
Position detection can be normally performed even if the shape of the square dark color portion of the center portion 22b of the marker pattern 22 is deformed to a shape other than a quadrangle such as a substantially diamond shape, a substantially circular shape, or an indefinite shape.
In particular, as shown in FIGS. 5 (a) to 5 (c), the outer frame 22a and the central portion 22b of the marker pattern 22 do not form concentric similar figures but are asymmetric figures. It is preferable. Further, an organization logo mark as shown in FIG. 5D may be used as a part of the marker pattern. Specifically, a frame shape corresponding to the outer frame of the position detection pattern or a figure corresponding thereto may be drawn outside the logo mark. Here, the asymmetric graphic means, for example, a graphic having no line symmetry with respect to the X-axis and Y-axis directions or a graphic having no point symmetry with respect to the center of the marker pattern 22.

Of course, the brightness at the boundary between the dark color and the light color may be changed continuously.
By configuring the marker pattern 22 in this manner, it is possible to improve higher designability and added value that have not been achieved conventionally.
Further, if the display format does not tilt the QR code 1, the position can be drawn as a line divided into four lines or a pattern such as a plurality of substantially circular or substantially rectangular shapes instead of the outer square frame. Detection may be possible.

6A to 6D show other configuration examples of the stroke pattern 30. FIG. The stroke pattern 30 may be colored in either a dark color or a light color. However, the stroke pattern 30 needs to be arranged so as not to affect the reading of the data pattern 26 and the marker pattern 22, and is a thin linear or spotted pattern. It is preferable that it is configured as a character or the like. The shape and size of the stroke pattern 30 are not particularly limited, and can be arranged at an arbitrary position with respect to the symbol area 24, and can be partially or entirely overlapped.
By superimposing the stroke pattern 30 as the foreground of the QR code 2, it is possible to further improve the degree of freedom in design and expressive power.

  As described above, the background patterns 27 and 28, the data patterns 25 and 26, the marker patterns 21 and 22, the stroke patterns 29 and 30 and the arbitrary logo image 15 constituting the QR codes 1 and 2 are arbitrarily combined. Since the design freedom of the QR code 2 can be further improved and an unprecedented impression can be given, a two-dimensional code having higher design properties and added value can be provided.

It is explanatory drawing of the QR code which concerns on one Embodiment of this invention. It is an exploded view of the pattern which comprises QR Code concerning one embodiment of the present invention. It is another example of composition of a background pattern concerning one embodiment of the present invention. It is another example of composition of a data pattern concerning one embodiment of the present invention. It is another example of composition of a marker pattern concerning one embodiment of the present invention. It is another structural example of the stroke pattern which concerns on one Embodiment of this invention. It is explanatory drawing which shows the example of the conventional 1 type QR code.

Explanation of symbols

1, 2, 101 QR code 3, 23, 24 Symbol area 4 Cell 5 Coding area 9 Quiet zone 11 Position detection pattern 11a, 21a, 22a Outer frame 11b, 21b, 22b Center part 12 Separation pattern 15 Logo image 15a Logo mark 15b Logotype 21, 22 Marker pattern 25, 26 Data pattern 27, 28 Background pattern 29, 30 Stroke pattern

Claims (7)

A data pattern that expresses data represented by a binary code by shades of coloring for each divided cell;
A two-dimensional code generated by arranging a marker pattern for specifying the position of the data pattern at a predetermined position on a two-dimensional matrix,
The data pattern is configured to have a cell whose dark color area is smaller than the area of a single cell,
The two-dimensional code, wherein the marker pattern is composed of an asymmetric figure. A data pattern that expresses data represented by a binary code using shades of color for each divided cell, and a marker pattern for specifying the position of the data pattern are arranged at predetermined positions on a two-dimensional matrix. A symbol area generated by
A two-dimensional code generated by superimposing a background pattern drawn on the background side of the symbol area,
The data pattern is configured to have a cell whose dark color area is smaller than the area of a single cell,
The marker pattern is composed of an asymmetric figure,
The two-dimensional code is characterized in that the background pattern is colored in a light color and is arranged in a range overlapping at least a part of the symbol area. A data pattern that expresses data represented by a binary code using shades of color for each divided cell, and a marker pattern for specifying the position of the data pattern are arranged at predetermined positions on a two-dimensional matrix. A symbol area generated by
A two-dimensional code generated by superimposing an image pattern not including data represented by a binary code,
The data pattern is configured to have a cell whose dark color area is smaller than the area of a single cell,
The marker pattern is composed of an asymmetric figure,
The image pattern includes a background pattern drawn on the background side of the symbol area and a stroke pattern drawn on the foreground side of the symbol area,
The background pattern is colored in a light color and arranged in a range that overlaps at least a part of the symbol area, and the stroke pattern is colored in a light color or a dark color and overlaps at least a part of the symbol area. A two-dimensional code that is arranged in a range. A data pattern that expresses data represented by a binary code using shades of color for each divided cell, and a marker pattern for specifying the position of the data pattern are arranged at predetermined positions on a two-dimensional matrix. A symbol area generated by
An image pattern that does not contain data represented in binary code, and
A two-dimensional code generated by superimposing a logo image displaying an arbitrary figure or group name,
The data pattern is configured to have a cell whose dark color area is smaller than the area of a single cell,
The marker pattern is composed of an asymmetric figure,
The image pattern includes a background pattern drawn on the background side of the symbol area and a stroke pattern drawn on the foreground side of the symbol area. The background pattern is colored lightly and at least the symbol area Alternatively, the stroke pattern is arranged in a range that overlaps a part of the logo image, and the stroke pattern is colored in a light color or a dark color, and is arranged in a range that overlaps at least a part of the symbol area or the logo image. A two-dimensional code.   The data pattern is characterized in that a part of cells colored in light color is colored in dark color and a boundary part between regions colored in dark color has a part colored in dark color. Item 5. The two-dimensional code according to any one of items 1 to 4.   The two-dimensional code according to any one of claims 1 to 5, wherein the marker pattern has a figure included in the logo image.   7. The data pattern or the marker pattern is characterized in that the lightness of the color that is colored at the boundary between the lightly colored region and the darkly colored region changes continuously. Two-dimensional code given in any 1 paragraph.

Images