JP2003288558A - Method and device for displaying two-dimensional code, and method and device for reading two-dimensional code - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize both improvement of amusement by diversifying the pattern of a two-dimensional code displayed on a terminal device and improvement of the secrecy of data indicated by the two-dimensional code. <P>SOLUTION: A plurality of grid lines G (imaginary line) and a plurality of grid intersections for determining the display position of a binary signal corresponding to the two-dimensional code are set in a rectangular image area IE set on the display device. Binary signals of two-dimensional codes to be displayed are allocated to the grating intersections and at a grid intersection position on a display screen, a two-dimensional code display screen selectively displaying a shape image M as a 1st unit image in a state made to correspond to the logic value (0 or 1) of the allocated binary signal and a shape image H as a 2nd unit image is generated. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional code display method and device for displaying a two-dimensional code on a display device of a terminal device, and a two-dimensional code display device for displaying the two-dimensional code.
The present invention relates to a two-dimensional code reading method and device for optically reading a two-dimensional code.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 2001-31903.
As shown in 7, the authentication information for identifying the customer is two-dimensionally coded and displayed on the display screen of the mobile terminal device owned by the customer, and the shop side that supplies the service to the customer displays the authentication information on the mobile terminal device. There is provided a system for reading a displayed two-dimensional code and providing an appropriate service to a customer based on customer information acquired based on the read result.

[0003]

However, in the case of the above-mentioned conventional structure, since the two-dimensional code pattern corresponding to the authentication information is displayed on the mobile terminal device as it is, it gives an impression of being inorganic to the user. There was a drawback that it was poor in amusement.
In addition, since a third party can easily recognize the pattern of the two-dimensional code displayed on the mobile terminal device, the confidentiality of the data represented by the two-dimensional code is low.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a two-dimensional code display method capable of diversifying a two-dimensional code pattern displayed on a terminal device and improving amusement. A two-dimensional code display device, a two-dimensional code reading method, and a two-dimensional code reading device are provided, and further, a two-dimensional code display method capable of simultaneously improving confidentiality of data represented by a two-dimensional code, A two-dimensional code display device, a two-dimensional code reading method, and a two-dimensional code reading device are provided.

[0005]

According to the two-dimensional code display method of the first aspect, the display device included in the terminal device has two functions.
When displaying a two-dimensional code in which the value signals are combined, first, a plurality of grid intersections for determining the display position of the binary signal corresponding to the two-dimensional code are set on the display screen of the display device. Then, at these grid intersections, the above 2
The first unit image and the second unit image in which the value signal is assigned and the logical value (0 or 1) of the binary signal assigned as described above is associated with the grid intersection position on the display screen.
A two-dimensional code display screen that selectively displays the unit image of is generated. In this case, since each unit image is configured by a shape that represents one concept in a state where it is displayed on the display device, it is possible to diversify the pattern of the two-dimensional code displayed on the terminal device and improve the amusement property. be able to.

According to the two-dimensional code display method of the second aspect, a state in which the second unit image displayed at the grid intersection point on the display screen is melted into the background of the display screen, in other words, the display screen is displayed. In the above, the state where only the first unit image can be recognized is exhibited. Therefore, the display screen can be simplified.

According to the two-dimensional code display method of the third aspect, since an image showing a thing in the natural world or a geometrical image is displayed as the unit image, it is useful for improving the amusement property. Become.

According to the two-dimensional code display method of the fourth aspect, the screen for displaying the two-dimensional code is time-divided into a plurality of screens, and the contents of the two-dimensional code are displayed in each time-division screen. The first and second unit images shown are arranged in a dispersed manner. Therefore, it can be expected that the amusement property is improved with the increase in the number of display screens. In addition, since the two-dimensional code cannot be reproduced unless a plurality of time-division screens to be displayed for a predetermined time are combined, it is possible to improve the confidentiality of the data indicated by the two-dimensional code. .

According to the two-dimensional code display method of the fifth aspect, since the unit image displayed on the display screen appears displaced, the amusement property at the time of displaying the two-dimensional code can be further improved.

According to the two-dimensional code display method of claim 6, when a two-dimensional code in which a binary signal is combined is displayed on the display device of the terminal device, first, the two-dimensional code is displayed on the display screen of the display device. A plurality of grid intersections for setting the display position of the binary signal corresponding to the code are set. Then, the binary signal is assigned to these lattice intersections, and the lattice intersection to which one logical value of the binary signal is assigned is set as the image disappearance lattice intersection. That is, the normal grid intersections and the image disappearance grid intersections are present on the display screen in an arrangement pattern according to the content of the two-dimensional code to be displayed.

From this state, an image corresponding to a display image in which a region other than a predetermined range centered on the image vanishing grid intersection on the display screen is filled with the unit image group is generated, and is shown by the image. By time-sharing the displayed screens, a plurality of time-sharing screens in which a plurality of unit images are dispersed in different layouts in each screen are generated. Then, such a plurality of time-division screens are sequentially displayed on the display screen. Therefore, in the state where the time-division screens thus displayed are combined in an overlapping manner, the area where the unit image is displayed in the display screen (the area other than the predetermined range centered on the image vanishing grid intersection) A region where the unit image is not displayed (a region within a predetermined range centered on the image disappearance lattice intersection) is made to appear. Therefore, at the positions corresponding to the respective grid intersections in the composite screen, the area where the unit image is not displayed and the area where the unit image is displayed appear in the arrangement pattern according to the content of the two-dimensional code to be displayed. As a result, a two-dimensional code corresponding to the logical value (0 or 1) of the binary signal assigned to each lattice intersection is displayed.

In this case, in order to display the two-dimensional code,
Since a plurality of time-division screens in which unit images are arranged differently are displayed, improvement in amusement can be expected. In addition, the two-dimensional code cannot be reproduced unless a plurality of time-division screens that are to be displayed for a predetermined time are combined, and it is extremely difficult to specify the grid intersection from each time-division screen. Also, the confidentiality of the data represented by the two-dimensional code can be improved.

According to the two-dimensional code display method of the seventh aspect, since an image showing a thing in the natural world or a geometrical image is displayed as the unit image, it is useful in improving the amusement property. Become.

According to the two-dimensional code display method of the eighth aspect, since the unit image displayed on the display screen appears displaced, the amusement property at the time of displaying the two-dimensional code can be further improved.

According to the two-dimensional code display method of the ninth aspect, since the displacement amount and the displacement direction of the unit image which is displaced on the display screen are varied, further improvement of the amusement property can be expected.

According to the two-dimensional code display method of the tenth aspect, a two-dimensional code (QR having a position detection pattern is provided.
When the code (R), the data matrix (R), etc. are displayed, the position detection pattern can be surely displayed using the image vanishing grid intersections, so that the code can be read accurately.

According to the two-dimensional code display method of the eleventh and twelfth aspects, the position of the grid intersection can be specified easily and accurately based on the position reference still image displayed on the display screen. This is useful in simplifying the procedure for reading the generated two-dimensional code with reference to the lattice intersection position.

According to the two-dimensional code display device of the thirteenth to twenty-fourth aspects, the control device provided in the display device performs control for realizing the two-dimensional code display method of the first to twelfth aspects. The same actions and effects as those of the two-dimensional code display method according to claims 1 to 12 can be obtained.

According to the two-dimensional code reading method of the twenty-fifth aspect, the two-dimensional code displayed by the two-dimensional code displaying method of any one of the first to third aspects, or the two-dimensional code of the thirteenth to fifteenth aspects. The two-dimensional code displayed by any one of the two-dimensional code display devices can be read by an optical reading means. In this method, first, the two-dimensional code screen displayed on the display device is read and temporarily stored, and the characteristics of the unit image in the two-dimensional code screen are detected. Then, the detected feature of the unit image is compared with the sample data, and the detected feature is associated with the unit image.
The logical value of the value signal is specified, and the array of the unit images in the stored two-dimensional code screen is converted into a two-dimensional code of a data array consisting of a combination of binary signals according to the specified logical value of the binary signal. Therefore, it is possible to accurately read the two-dimensional code composed of the first unit image and the second unit image selectively displayed at the position corresponding to the grid intersection on the display screen.

According to the two-dimensional code reading method of claim 26, the two-dimensional code displayed by the two-dimensional code display method of claim 4 or 5, or the two-dimensional code of claim 16 or 17, The two-dimensional code displayed by the display device can be read by the optical reading means. In this method, first, a plurality of time-division screens displayed on the display device are read, and the characteristics of the unit image in each time-division screen are detected. Next, the feature of the unit image detected for each time-division screen is compared with the sample data to specify the logical value of the binary signal assigned to each lattice intersection. Furthermore, 2 specified for each time-sharing screen
A two-dimensional code of a data array consisting of a combination of binary signals is used for the array of unit images in the two-dimensional code display screen before time division by performing a logical operation for each same grid intersection in each time-division screen for the value signal. Convert to. Therefore,
Even if a two-dimensional code composed of a combination of the first unit image and the second unit image is displayed in a state of being divided into a plurality of time-division screens, the two-dimensional code can be accurately read. You can

According to the two-dimensional code reading method of the twenty-seventh aspect, the two-dimensional code displayed by the two-dimensional code displaying method of any one of the sixth to tenth aspects or the eighteenth to the twenty-second aspect of the invention. The two-dimensional code displayed by any one of the two-dimensional code display devices can be read by an optical reading means. In this method,
A plurality of time-division screens displayed on the display device are read, and a composite image is created by superimposing the time-division screens on top of each other. Next, the center position of the area where the unit image is not displayed in the composite image (this corresponds to the position of the image disappearing grid intersection) is specified, and the position of the grid intersection in the composite image is specified based on the specific center position. Specify. Then, the logical value of the binary signal assigned to the lattice intersection is determined based on the presence / absence of the unit image displayed at the specified lattice intersection, and 2 is determined based on the determination result for each lattice intersection. A two-dimensional code of a data array composed of a combination of value signals is reproduced. Therefore, it is possible to accurately read the two-dimensional code represented by a plurality of time-division screens in which a plurality of unit images are dispersed in different arrangement states.

According to the two-dimensional code reading method of claim 28, the two-dimensional code displayed by the two-dimensional code display method of claim 11 or 12, or the two-dimensional code of claim 23 or 24. The two-dimensional code displayed by the display device can be read by the optical reading means. In this method, first, a plurality of time-division screens displayed on the display device are read, and a composite image is created by superimposing the time-division screens in a superimposed manner. Next, the position of the grid intersection in the composite image is specified based on the position reference still image displayed in the composite image. Then, the logical value of the binary signal assigned to the lattice intersection is determined based on the presence / absence of the unit image displayed at the specified lattice intersection, and 2 is determined based on the determination result for each lattice intersection. A two-dimensional code of a data array composed of a combination of value signals is reproduced. Therefore, it is possible to accurately read the two-dimensional code represented by a plurality of time-division screens in which a plurality of unit images are dispersed in different arrangement states. In particular, the position of the grid intersection can be easily and accurately specified based on the position reference still image.

According to the two-dimensional code reader of the twenty-ninth to thirty-second aspects, the control device provided in the display device includes:
Since the control for realizing the two-dimensional code reading method according to any of claims 25 to 28 is performed based on the read data by the optical reading means, the same operation as the two-dimensional code displaying method according to any one of claims 25 to 28 is performed. -The effect can be achieved.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. FIG. 2 schematically shows a front view of a portable terminal device having a two-dimensional code display function, and FIG. 3 shows a schematic electrical configuration of the terminal device by combining functional blocks. There is. In FIG. 2, a terminal device 1 made of, for example, a PDA has a configuration in which a display device 3 capable of graphic display and an operation switch group 4 are arranged on a front surface of a main body case 2, and the display device 3 has a format as described later. The two-dimensional code of can be displayed. Further, the main body case 2 is provided with an antenna 5 for performing data communication with an external communication terminal or the like through a wireless line.

In FIG. 3, the terminal device 1 includes a CPU 6
(Corresponding to the control device in the present invention), and the CPU 6 includes a wireless communication unit 7 including the antenna 5 and an operation unit including the operation switch group 4. 8, a display unit 9 including the display device 3 and a drive circuit (not shown) for driving the display device 3, an input / output interface unit 10 for exchanging data with an external device, and a memory unit 11 are connected. There is. Further, in the terminal device 1, a power supply unit 12 for supplying power to a CPU 6 and the like from a battery (not shown) is provided.

FIG. 1 shows an example of a two-dimensional code displayed on the display device 3 of the terminal device 1. In FIG. 1, a two-dimensional code having a relatively small amount of information (4 × 4 bits in this example) is shown for simplification of the description, but actually, a two-dimensional code having a relatively large amount of information is shown. The code can be displayed.

FIG. 1A shows an example of a data array of a two-dimensional code, and FIG. 1B shows an example in which the two-dimensional code is displayed as a pattern on the display device 3. Figure 1
In (a), the two-dimensional code to be displayed is expressed as a binary signal (0, 1) of 4 bits each in the vertical and horizontal directions, which is a combination of unit figures (squares) in a matrix. The portion has a logical value "1" and the black portion has a logical value "0".

In FIG. 1B, the two-dimensional code is displayed in the rectangular image area IE set in a predetermined range on the display device 3. In this image area IE, four vertical and horizontal lattice lines G (however, imaginary lines not displayed on the screen)
Are set at equal intervals, and the grid line G
A shape M (for example, “Mogura”: corresponding to the first unit image referred to in the present invention) indicating a logical value “1” at a position corresponding to the grid intersection point and a shape H (for example, “excavated on the ground) "Hole": corresponding to the second unit image) is displayed.
Although not shown, an image representing a field is displayed as the background of the screen. The grid line G is
It is not necessary to set them at equal intervals, and they can be changed appropriately according to the design of the display image.

FIG. 4 shows a processing procedure for performing the display as shown in FIG. 1A among the control contents by the CPU 6 of the terminal device 1. That is, in the processing procedure of FIG. 4, first, a rectangular image area IE is set in a predetermined range on the display device 3 (step A1), and four grid lines G are set in each of the vertical and horizontal directions in the image area IE (step A1). Step A2). Next, unit data of two-dimensional code (that is, binary signal)
A unit image corresponding to is set (step A3). In the case of the present embodiment, as the unit images respectively corresponding to the logical values "1" and "0" of the binary signal, the shapes M and H indicating the things in the natural world as shown in FIG. 1A are set. For such a unit image, the corresponding image data is stored in the memory unit 1.
However, it is also possible to store various types of image data including other shapes and set image data randomly selected from them. Further, in this embodiment, the image data is stored in the memory unit 11, but in the CPU 6,
A configuration may be adopted in which image data corresponding to a unit image is generated from various parts data stored in advance in the memory unit 11.

After this, a plurality of grid lines G (4 × 4)
Binary signals, which are unit data corresponding to the two-dimensional code to be displayed, are assigned to the grid intersection points of (step A4), and the image data for the background screen (field in the case of this embodiment) to be displayed is stored in advance. It is created based on the part data (step A5). Next, the timekeeping operation of the preset display time T is started (step A6), and the display device 3
The background screen created in step A5 is displayed on the screen (step A7). Further, a unit image (figures M and H shown in FIG. 1A) corresponding to the unit data (binary signal) assigned to each lattice intersection in step A4 is displayed on the displayed background (step S4). A8), and waits until the display time T elapses (step A9). Then, when the display time T has elapsed, the screen display on the display device 3 is cleared (step A10), thus ending a series of display operations for displaying the two-dimensional code in the form as shown in FIG. To do.

On the other hand, FIG. 5 shows the display device 3 of the terminal device 1.
FIG. 6 schematically shows the configuration of a code reading device for optically reading a two-dimensional code displayed in a stylized state. FIG. 6 shows an outline of the electrical configuration of the reading device in which functional blocks are combined. , Which will be described below.

In FIG. 5, the code reading device 13 (corresponding to the reading means) includes a plurality of LEDs in the main body case 14.
15 and a light receiving sensor 16 are housed as an optical system for projecting and receiving light, and the light transmitted from the group of LEDs 15 is diffused through the diffusion plate 17 and then projected onto the display device 3 of the terminal device 1 which is the code reading target surface. It is configured to be. Then, the light reflected on the display device 3 is reflected by the optical lens 1
The light is incident on the light receiving sensor 16 via the light source 8.

In FIG. 6, the code reading device 13 has a C
A PU 19 (corresponding to the control means in the present invention) is mainly configured, and the CPU 19 includes the light receiving sensor 16
A light receiving section 20 including the light receiving section 20, a lighting section 21 including the LED 15 group, and a light receiving signal of the light receiving section 20
An image memory unit 23 received through the D conversion unit 22, an input / output interface unit 24 for exchanging data with an external device, and a memory unit 25 are connected. Further, in the code reading device 13, a power supply unit 26 for supplying power to a CPU 19 and the like from a battery (not shown) is provided.

In FIG. 7, C of the code reading device 13 is provided.
Of the control contents by the PU 19, the two-dimensional code displayed in a stylized state on the terminal device 1 (see FIG. 1A)
The procedure for reading the is shown. That is, FIG.
In the processing procedure, first, the image read through the light receiving unit 20 is captured through the AD conversion unit 22 and temporarily stored in the image memory unit 23 (step B1), and the unit images (images M and H) are selected from the stored images. ) Is detected and the features of the unit image are extracted and classified (step B).
2).

Next, the characteristics of the classified unit images are compared with prestored unit image sample data (image data corresponding to the shapes M and H) to specify the type of the detected unit image (step B3). The correspondence with the unit data (binary signal) is determined from the identified type of unit image (step B4), and the logical value of the binary signal corresponding to the unit image is identified.

After that, the unit image is displayed in accordance with the correspondence between the type of the unit image and the specified unit data type (logical values "1" and "0") and the display arrangement of the unit images in the read two-dimensional code screen. Is converted into a two-dimensional code of a data array composed of a combination of binary signals (step B
5). Next, the error check code (parity bit, checksum, CR, etc.) included in the converted two-dimensional code
The presence or absence of an error in the two-dimensional code is checked using C (cyclic redundancy check) bit string (step B6), and the data indicating the two-dimensional code and the error check result are output (step B7).

In short, according to the above-described embodiment, when displaying the two-dimensional code in which the binary signal is combined on the display device 3 of the terminal device 1, first, the two-dimensional code is displayed on the display screen of the display device 3. A plurality of grid intersections for setting the display position of the binary signal corresponding to the code are set. The binary signals corresponding to the two-dimensional code to be displayed are assigned to these grid intersections, and at the same time, on the display screen. As shown in FIG. 1B, the images M and H, which are unit images, are selectively displayed at the grid intersection point position in association with the logical value (0 or 1) of the binary signal assigned as described above. 2D code display screen is generated. In this case, since each figure M and H is composed of a figure that represents one concept (animal and its habitat) in the state displayed on the display device 3, the two-dimensional code of the terminal device 1 is displayed. It is possible to diversify patterns and improve amusement.

When the above-mentioned two-dimensional code displayed on the terminal device 1 is read by the code reading device 13, the two-dimensional code screen as shown in FIG. And the features of the unit images (shapes M and H) in the two-dimensional code screen are detected. Next, the detected feature of the unit image is compared with the unit image sample data prepared in advance to identify the logical value of the binary signal corresponding to the unit image, and according to the identified logical value of the binary signal, as described above. The array of unit images in the two-dimensional code screen temporarily stored in is converted into a two-dimensional code of a data array composed of a combination of binary signals. Therefore,
It is possible to accurately read the two-dimensional code composed of the shapes M and H selectively displayed at the position corresponding to the grid intersection on the display screen by the display device 3.

(Second Embodiment) FIG. 8 shows the first embodiment.
A second embodiment of the present invention, which is a modification of the embodiment, is shown, and only the parts different from the first embodiment will be described below. That is, the second embodiment is adapted to a state in which the two-dimensional code to be displayed cannot be displayed on the screen of one frame (a state in which there is a large amount of information), and the two-dimensional code is shown in FIG. An example of the data array is shown, and FIGS. 2B and 2C show examples in which the two-dimensional code is displayed as a pattern on the display device 3.

In FIG. 8A, the two-dimensional code to be displayed is expressed as a binary signal (0, 1) of vertical 8 bits and horizontal 4 bits in which unit figures (squares) are combined in a matrix. Since such a two-dimensional code cannot be displayed on a one-frame screen, the two-dimensional code to be displayed is divided into two blocks, and the screen corresponding to each block is displayed as shown in FIGS. 8B and 8C. It will be displayed in 2 frames. The screen display corresponding to each block can be realized by executing the display procedure shown in FIG. 4 for each block. Incidentally, when the information amount of the two-dimensional code is further increased, the two-dimensional code is divided and displayed on the screen of three frames or more. Further, the reading of the two-dimensional code divided into two or more frames in this way can be realized by executing the reading procedure shown in FIG. 7 for each display screen of each frame.

(Third Embodiment) FIG. 9 shows a third embodiment of the present invention, and only the parts different from the first embodiment will be described below. In the third embodiment, as shown in FIGS. 9A to 9C, the two-dimensional code display screen for one frame (see FIG. 1B) is time-divided into, for example, three screens. , The characteristic M showing the logical value “1” is dispersed and displayed in each time division screen.
In each time-division screen, the shape H indicating the logical value "0" is displayed at the grid intersection where the shape M should originally exist. In this case, the shape M is a logical value "1", the shape H
Is a unit image corresponding to the logical value “0”, and therefore, in the state where all the time-division screens are superimposed and combined, for example, the logic corresponding to the unit image (figure M or H) displayed at the grid intersection point. If the logical operation of acquiring the logical sum output of the values is performed, the two-dimensional code to be displayed is displayed in the composite screen. It should be noted that, although the configuration is such that the logical sum output is taken here, it is also possible to display the two-dimensional code by performing another logical operation such as logical product or negative logical sum depending on the display form of the unit image.

According to the present embodiment having such a configuration, there is a display in which the number of display screens is increased and the shape M is displaced (moved) between the time division screens (display in which moles appear and disappear from the holes). It can be expected that the amusement property will be improved as a result of being performed. In addition, since the two-dimensional code cannot be reproduced unless a plurality of time-division screens to be displayed for a predetermined time are combined, it is possible to improve the confidentiality of the data indicated by the two-dimensional code. .

In order to read the two-dimensional code displayed in this way, first, the 3 code displayed on the display device 3 is displayed.
The code reading device 13 reads one sheet of time-division screen and detects the characteristics of the unit images (forms M and H) in each time-division screen. Next, the feature of the unit image detected for each time-division screen is compared with the sample data to specify the logical value of the binary signal assigned to each lattice intersection. Furthermore, for the binary signal specified for each of the plurality of time-division screens, for example, by performing a logical operation of taking a logical sum for each of the same lattice intersections in each time-division screen, the two-dimensional code display screen before time-division is displayed. The array of unit images is converted into a two-dimensional code of a data array composed of a combination of binary signals. Therefore, even when the two-dimensional code including the combination of the shapes M and H is displayed in a state of being divided into a plurality of time-division screens, the reading of the two-dimensional code can be performed accurately. In the third embodiment, the example in which the two-dimensional code display screen is time-divided into three frames has been described, but it is also possible to time-division into a larger number of frames. It is also possible to adopt a configuration in which another logical operation is performed when the array of unit images is converted into a two-dimensional code of a data array composed of a combination of binary signals.

(Fourth Embodiment) FIGS. 10 and 11 show a fourth embodiment of the present invention, and only the portions different from the above-mentioned embodiments will be described below. Figure 10
Shows an example of a two-dimensional code displayed on the display device 3 of the terminal device 1. This is shown in FIG.
An example of a data array of a two-dimensional code of × 6 bits is shown, and an example in which the two-dimensional code is designed and displayed on the display device 3 is shown in FIG. In FIG. 10A, the two-dimensional code to be displayed is expressed as matrix data that is a combination of binary signals (0, 1) of 6 bits each in the vertical and horizontal directions. 1 ”, and the black portion is a logical value“ 0 ”.

In FIG. 10B, the two-dimensional code is displayed in the rectangular image area IE set in a predetermined range on the display device 3. In the image area IE, for example, the night sky N and the shape B of the building are displayed as background images, and grid lines (not shown: imaginary lines not shown on the screen) of 6 lines each are set. Yes, there is a shape S indicating the logical value "1" at the position corresponding to the grid intersection of the grid line.
(For example, “star”: equivalent to the first unit image in the present invention)
And a figure showing the logical value "0" (the same figure as the background image "night sky N" (no code): corresponding to the second unit image).

As in the third embodiment, such a two-dimensional code display screen is displayed in a time-divisional manner on four screens as shown in FIGS. 11 (a) to 11 (d). And the shapes S indicating the logical value “1” are displayed in a dispersed state in each time division screen. In each time-division screen, a figure showing the logical value "0" (the same figure as the background image) is displayed at the grid intersection where the figure S should originally exist. Therefore, in the case of this example as well, in the state where all the time-division screens are combined in an overlapping manner, the logical sum output of logical values corresponding to the unit image (figure S or background image) displayed at the grid intersection is obtained. If the logical operation is performed, the two-dimensional code to be displayed is displayed in the composite screen. still,
The two-dimensional code displayed in this way can be read by the code reading method for performing the logical operation as described in the third embodiment.

According to this embodiment thus constructed, the same effects as those of the first to third embodiments are obtained, and in addition, the logical value "0" displayed at the grid intersection position on the display screen is dealt with. The unit image that has been blended into the background of the display screen, in other words, the state in which only the image S that is one of the unit images can be recognized on the display screen, can be simplified. become.

(Fifth Embodiment) FIGS. 12 to 19 show a fifth embodiment of the present invention, and only the portions different from the respective embodiments will be described below. 12 to 1
FIG. 4 is a diagram for explaining the display principle of the two-dimensional code in this embodiment, which will be described first. In FIG. 12 for explaining the basic principle, a rectangular image area IE set in a predetermined range on the display device 3 has 9 vertical lines × 8 horizontal lines.
For example, the grid lines G (imaginary lines that are not displayed on the screen) of the book are set at equal intervals, and a region having a predetermined area centering on the grid intersection of the grid line G (in the embodiment, having a predetermined radius centering on the grid intersection). The circular area) is set as the display position of the binary signal corresponding to the two-dimensional code (9 × 8 = 72-bit code in this example) to be displayed. 9x set like this
2 corresponding to the 2D code to be displayed at 8 grid intersections
A value signal is assigned and a lattice intersection to which one of the binary signals, for example, "1" is assigned, is set as an image disappearance lattice intersection. Note that, in FIG. 13, the image disappearance grid intersection marked with the symbol P1 is represented by a circle with a hatched band, and the normal grid intersection identified with the symbol P0 is represented by a white circle.

In the image area IE, as shown in FIG. 12 and FIG. 13 showing an example of the display screen, a figure SM imitating a snowman is displayed as a background image. In the case of this embodiment, for example, eight time-division screens are used to display the two-dimensional code, and FIG. 13 is an example of the time-division screen. On each time-division screen, a figure SP (corresponding to a unit image) showing a large number of snowflakes is dispersedly displayed.
In this case, the shape SP is a region having a predetermined area centered on the image vanishing grid intersection P1 set according to the two-dimensional code to be displayed as described above (in this example, 3 × 3 shape SPs are formed). It is displayed in a position that does not overlap with the displayable area), and when the above 8 time-division screens are overlapped,
As shown in FIG. 14, the image disappearance lattice intersection P1 (only one is shown in FIG. 14) is displayed so as to be filled in a state where it is aligned in the vertical and horizontal directions in a portion that does not overlap a region in a predetermined range. It Therefore, as is clear from FIG. 14, the image disappearing grid intersection P1 which is an area where the shape SP does not exist (area where 3 × 3 shape SPs can be displayed) and the normal grid intersection P0 filled with the shape SP. (See FIG. 1) can be recognized based on the image data,
The two-dimensional code to be displayed can be decoded based on the recognition result. The area where the image SP does not exist (area having a predetermined area centered on the image disappearance grid intersection P1) is 2 × 2.
It may be a range in which one or 1 × 1 figure SP can be displayed.

In this embodiment, the eight time-division images are displayed in a predetermined order so that the snowflakes indicated by the symbol SP appear to be displaced (fall) from the upper side to the lower side of the screen. A method for such display will be described with reference to FIG. That is, when one snowflake corresponding to the shape SP is displayed so as to fall on the path shown in FIG. 12, the shape S displayed on the first time division screen is displayed.
The image SP () displayed on the second time-division screen is positioned below P (), and the images SP (-) displayed on the third and subsequent time-division screens are sequentially positioned below.
However, when the figure SP to be displayed is located at the image disappearing lattice intersection P1 portion, the figure SP is not displayed. The setting of the display position of such a figure SP is performed for all the figure SPs displayed on the time division screen.
By cyclically performing control for sequentially displaying eight time-division screens for about 50 msec, it appears that snowflakes indicated by the symbol SP are falling. If the ability of the CPU (see FIG. 6) to perform such display control is high, the number of time-division screens is increased and the screen sequential display cycle is shortened to display the falling state of snowflakes. Can be done more smoothly.

15 and 16 show the processing procedure for performing the display as described with reference to FIGS. 12 to 14 among the control contents of the CPU 6. That is, FIG.
A procedure for creating a screen is shown. First, a rectangular image area IE is set in a predetermined range on the display device 3 (step C
1), the grid lines G of 9 vertical × 8 horizontal are set in the image area IE (step C2). Then, for each grid intersection, unit data of the two-dimensional code to be displayed (binary signal)
And the lattice intersection to which the binary signal of the logical value “1” is assigned is set as the image disappearance lattice intersection P1 (step C3).

After this, the snowflakes images (figures SP) are set in alignment in the image area IE excluding the area of a predetermined area centered on the image vanishing grid intersection point P1 (step C4), and the falling path of the snowflakes is set. (Step C5). Then, a predetermined number of snowflakes on the set fall path are associated with each other along the fall path at substantially equal intervals (step C6). Furthermore, the falling paths of the snowflakes to be displayed on each time-sharing screen are assigned so that the number of snowflakes displayed on the eight time-sharing screens is approximately the same, and N (8) time-sharing screens are created. (Step C7). In addition, a SM that imitates a snowman
A background screen including is created (step C8).

FIG. 16 shows a screen display procedure for the image area IE. First, the background screen created in step C8 is displayed (step D1), and the screen number n is set to "1" which is an initial value. (Step D2). Then
The nth time-division screen is displayed in a state of being superimposed on the background screen (step D3), and a predetermined time T (for example, 50 m) is displayed.
Wait only for (seconds) (step D4). When the time T has elapsed, it is determined whether or not the screen number n is "N (= 8)" (step D5). If "NO", step D6 is executed to increment the screen number n by "1". After that, the process returns to step D3. On the other hand, if the screen number n is "N", the process returns to step D2 to initialize the image number n to "1", and step D3
Re-execute the subsequent processing. By performing such control, the operation of sequentially displaying every time T elapses from the first time-division screen to the N-th (eighth) time-division screen is cyclically performed. .

FIG. 17 shows a processing procedure for reading the two-dimensional code displayed by the eight time-division screens as described above among the control contents by the CPU 19 of the code reading device 13. That is, in the processing procedure of FIG. 17, first, the initial value “1” is set as the screen number n.
(Step E1), the image read through the light receiving section 20 is taken in through the AD conversion section 22 and temporarily stored in the image memory section 23 (step E2).

Next, it is judged whether or not the image thus stored is the same as the image previously captured and temporarily stored (step E3). If not, the process returns to step E2 and the image is stored. Perform the capture and temporary storage operations again. On the other hand, if the image captured this time is the same as the image captured last time and temporarily stored, whether all the images of the N time-division screens have been read (the captured image 1 described later). ~ Whether all N have been memorized)
Is determined (step E4). If the determination is “NO”, the temporarily stored image is stored in the memory unit 25 as the nth captured image (step E
5) After that, step E6 of incrementing the image number n by "1" is executed, and the process returns to step E2. Therefore, N time-division screens are captured and images 1 to N
Until it is stored as, the processing of steps E2 to E6 is repeatedly executed.

The control contents of steps E2 to E6 are summarized in FIG. That is, FIG.
Images 1 to N of each time division screen shown in (a) are shown in FIG.
As shown in FIG. 5, each image is captured at a predetermined image capture timing which is two or more times, and only when the continuously captured images match, the image is stored as a captured image. However, as shown in FIG. 19, when the capture timing of each screen is once per screen (when the image capture speed is slow), it is effective to use a screen that is neither discontinuous nor identical. It will be stored as a captured image. In any case, when the reading of the image at each image capturing timing fails, the image capturing process is performed again during the period when the image is displayed next.

On the other hand, when all N (8) time-division screen images have been read (“YES” in step E4), a composite image is created by superimposing the captured images 1-N. (Step E7). Next, the center position of the disappearing region of snowflakes (the region having a predetermined area corresponding to the image disappearing grid intersection P1) is detected in the composite image as described above, and the grid intersection in the composite screen is detected based on the center position. Specify (step E8). Then, the logical value of the binary signal assigned to each lattice intersection is determined based on the presence or absence of the image SP (snowflakes) displayed at the specified lattice intersection position (step E9). After that, the data array corresponding to the result of the determination of the logical value at each grid intersection is converted into a two-dimensional code composed of a combination of binary signals (step E10), and the series of reading processing is ended.

In summary, in the above-described embodiment, when displaying a two-dimensional code in which a binary signal is combined on the display device 3 of the terminal device 1, the two-dimensional code is first displayed on the display screen of the display device 3. Setting a plurality of grid intersections for determining the display position of the corresponding binary signal, assigning the binary signal to each grid intersection, and
The lattice intersection to which one logical value "1" of the value signal is assigned is set as the image disappearance lattice intersection P1. This allows
On the display screen, the normal lattice intersection P0 and the image disappearance lattice intersection P1 are present in the arrangement pattern according to the content of the two-dimensional code to be displayed. From this state, an image corresponding to the display screen in which a region other than a predetermined range centered on the image vanishing grid intersection point P1 on the display screen is filled with a group of image SP (unit images) representing snowflakes is generated, and By time-sharing the display screen shown by the image, a plurality of time-sharing screens in which a plurality of figure SPs are dispersed in different layouts in each screen are generated. Then, such a plurality of time division screens are sequentially displayed on the display screen at predetermined time intervals.

Therefore, in the state where the displayed time-division screens are combined in an overlapping manner, as shown in FIG. 14, the area where the image SP is displayed (image disappearing grid intersection P
A region other than the predetermined range centered at 1 and a region in which the unit image is not displayed (a region having a predetermined area including the image vanishing grid intersection) appear. For this reason, in the positions corresponding to the respective grid intersections P0 and P1 in the composite screen, a region where the figure SP is not displayed and a region where it is displayed appear in an arrangement pattern according to the contents of the two-dimensional code to be displayed. As a result, a two-dimensional code corresponding to the logical value (0 or 1) of the binary signal assigned to each lattice intersection P0 and P1 is displayed.

In this embodiment, in order to display the two-dimensional code, a plurality of time-division screens in which the arrangement of a large number of figure SPs are different are displayed and the display figure SP is displaced. Since it looks like (snowflakes are falling), a great improvement in amusement performance can be expected. Further, the two-dimensional code cannot be reproduced unless the eight time-division screens that are to be displayed for a predetermined time are combined, and it is extremely difficult to specify the grid intersection points P0 and P1 from each time-division screen. Therefore, the confidentiality of the data represented by the two-dimensional code can be significantly improved.

In the present embodiment, when reading the two-dimensional code displayed as described above, first, the eight time-division screens displayed on the display device 1 are read and
A composite image is created by combining the time-division screens in an overlapping manner. Next, in the composite image, the center position of the area where the figure SP is not displayed (this is the image vanishing grid intersection P1
(Corresponding to the position of) and the positions of the grid intersections P0 and P1 in the composite image are specified based on the specific center position. Then, the identified grid intersections P0 and P
Based on the presence / absence of the image SP displayed at position 1, the logical value of the binary signal assigned to each of the grid intersections P0 and P1 is determined, and the data composed of the combination of the binary signals is determined based on the determination result. Play the two-dimensional code of the array. Therefore, it is represented by 8 time-division screens in which a plurality of figure SPs are dispersed in different arrangement states.
The dimension code can be read accurately.

In this embodiment, the plurality of images SP displayed in each of the eight time-division screens are
When the time-division screens are displayed in a predetermined order, the displacement amount and the displacement direction may be set to be nonuniform in at least one direction. According to this configuration, since the displacement amount and the displacement direction of the figure SP that appears displaced on the display screen are varied, further improvement in amusement property can be expected.

Further, on the display screen, grid intersections P0 and P
It is also possible to display the position reference still image set in a predetermined positional relationship with 1 (or the grid line G). In the case of the above-described embodiment, as shown in FIGS. 12 and 13, the figure showing the “mouth” and the “nose” and the “eye” displayed in the figure SM (corresponding to a snowman) serving as the background image are shown. The image can be used as a still image for position reference. In the case of such a configuration, the grid intersections P0 and P are based on the position reference still image.
The position of 1 can be specified easily and accurately, which is useful in simplifying the procedure of reading the displayed two-dimensional code with reference to the position of the grid intersection.

(Sixth Embodiment) FIG. 20 shows a sixth embodiment of the present invention, which is a modification of the fifth embodiment, and only different portions will be described below. That is, FIG. 20 corresponds to FIG. 14, and in the state where eight time-division screens are overlapped with each other, outside the figure SP group which is arranged in an array and has a rectangular shape as a whole, The images of the respective time-division screens are configured so that the image SP '(unit image) indicating the position of the grid line G exists. With such a configuration, the positions of the grid intersections P0 and P1 can be easily and accurately specified based on the position of the shape SP '. Therefore, the displayed two-dimensional code is referred to the position of the grid intersection. It is useful for simplifying the reading procedure.

(Seventh Embodiment) FIG. 21 is a seventh embodiment of the present invention in which a two-dimensional code having a position detection pattern is displayed by utilizing the configuration of the fifth embodiment. It is shown. In FIG. 21, when a standardized two-dimensional code as shown in (a) (data matrix (R) in this example) is displayed, the two-dimensional code is provided as shown in (b). Position detection pattern w
1 (an L-shaped portion composed of one row on the left side and one row on the lower side) is the image vanishing grid intersection P1 (in the example of FIG. 21,
A space for displaying one figure SP is arranged in an L-shape). According to this configuration, the position detection pattern w1 is set to the image vanishing grid intersection point P.
Since 1 can be surely displayed by using 1, the two-dimensional code having the position detection pattern can be accurately read. Other standardized two-dimensional code such as QR code (R) can be similarly displayed.

(Other Embodiments) The present invention is not limited to the above-described embodiments, but can be modified or expanded as described below. The image displayed as a unit image is not limited to each of the above-described examples, but an image showing a thing in the natural world (raindrops, petals, fallen leaves,
It is possible to widely adopt ants, small fish, etc.) or geometrical images (○, Δ, ◇, etc.), which can improve the amusement property. Although the PDA is mentioned as an example of the terminal device, it can be widely applied to general terminal devices including a display device such as a mobile phone and a personal computer.

[Brief description of drawings]

FIG. 1 is a diagram showing a display example of a two-dimensional code in the first embodiment of the present invention.

FIG. 2 is a schematic front view of a terminal device.

FIG. 3 is a functional block diagram schematically showing an electrical configuration of a terminal device.

FIG. 4 is a flowchart showing a procedure for displaying a two-dimensional code by the terminal device.

FIG. 5 is a schematic cross-sectional view of a reading device.

FIG. 6 is a functional block diagram schematically showing an electrical configuration of a reading device.

FIG. 7 is a flowchart showing a procedure for reading a two-dimensional code by the reading device.

FIG. 8 is a diagram showing a display example of a two-dimensional code in the second embodiment of the present invention.

FIG. 9 is a diagram showing a display example of a time division screen in the third embodiment of the invention.

FIG. 10 is a diagram showing a display example of a two-dimensional code in the fourth embodiment of the present invention.

FIG. 11 is a diagram showing a display example of a time division screen.

FIG. 12 is a view for explaining the principle of the fifth embodiment of the present invention.

FIG. 13 is a diagram showing an example of a display screen.

FIG. 14 is a diagram showing an example of a screen synthesis result.

FIG. 15 is a flowchart showing a procedure for creating a two-dimensional code display screen by the terminal device.

FIG. 16 is a flowchart showing a procedure for displaying a two-dimensional code by the terminal device.

FIG. 17 is a flowchart showing a procedure for reading a two-dimensional code by the reading device.

FIG. 18 is a diagram showing an example of image reading timing 1

FIG. 19 is a diagram showing an image reading timing example 2

FIG. 20 is a view corresponding to FIG. 14 showing a sixth embodiment of the present invention.

FIG. 21 is a view for explaining the principle of the seventh embodiment of the present invention.

[Explanation of symbols]

1 is a terminal device, 3 is a display device, 6 is a CPU (control device), 13 is a code reading device (reading means), and 19 is a CP.
U (control means), G indicates a grid line, M and S indicate a figure (first unit image), H indicates a figure (second unit image), and SP indicates a figure (unit image).

Claims (32)

[Claims] 1. A method of displaying a two-dimensional code in which a binary signal is combined on a display device included in a terminal device, the first device having a shape expressing one concept in a state of being displayed on the display device. Preparing a unit image and a second unit image, setting a plurality of grid intersections for determining the display position of the binary signal on the display screen of the display device, and displaying a plurality of grid intersections at the grid intersections. A step of assigning a binary signal corresponding to a two-dimensional code, the first unit in a state in which the position corresponding to the lattice intersection on the display screen is associated with the logical value of the binary signal assigned to the lattice intersection. And a step of generating a two-dimensional code display screen by selectively displaying the image and the second unit image. 2. The two-dimensional code display method according to claim 1, wherein the second unit image is the same as the background image displayed on the display screen. 3. The two-dimensional code display method according to claim 1, wherein the unit image is an image showing a thing in the natural world or a geometrical image. 4. The two-dimensional code display screen is composed of a plurality of time-divided screens, and at least one of the first and second unit images is dispersed and displayed in each time-divided screen. The two-dimensional code display method according to any one of claims 1 to 3, wherein the two-dimensional code is expressed in a state in which all the time-division screens are combined in an overlapping manner. 5. The two-dimensional code display method according to claim 4, wherein the plurality of time-division screens are displayed in a predetermined order so that the unit image displayed can be displaced. 2D code display method. 6. A method of displaying a two-dimensional code in which a binary signal is combined on a display device included in a terminal device, wherein a unit image to be displayed on the display device is prepared, and the unit image is displayed on the display screen of the display device. A step of setting a plurality of grid intersections for determining a display position of a binary signal; a step of assigning a binary signal corresponding to a two-dimensional code to be displayed to the plurality of grid intersections; A step of setting a grid intersection to which one logical value of the binary signal is assigned as an image disappearance grid intersection, and an area other than a predetermined range centered on the image disappearance grid intersection on the display screen in the unit image group An image corresponding to the filled display image is generated, and the display screen shown by the image is time-divided, so that a plurality of unit images are displayed in each screen. And a step of generating a plurality of time-division screens in a state in which they are dispersed in different arrangement states, and a step of sequentially displaying the plurality of time-division screens on the display screen. Two-dimensional code display method. 7. The two-dimensional code display method according to claim 6, wherein the unit image is an image showing a thing in the natural world or a geometric image. 8. The two-dimensional code display method according to claim 6 or 7, wherein the plurality of time-division screens are displayed in a predetermined order so that the displayed unit image is displaced. A two-dimensional code display method characterized by: 9. The two-dimensional code display method according to claim 8, wherein the plurality of unit images displayed in each of the plurality of time-division screens have the plurality of time-division screens in the predetermined order. A two-dimensional code display method characterized in that, when displayed, the displacement amount and the displacement direction are set to be nonuniform in at least one direction. 10. The method according to claim 6, wherein when a two-dimensional code having one detection pattern is displayed, the position detection pattern is displayed using the image vanishing grid intersection. The two-dimensional code display method described. 11. The position reference still image set in a predetermined positional relationship with the grid intersection is displayed on the display screen, according to any one of claims 6 to 10.
Dimension code display method. 12. The two-dimensional code display method according to claim 11, wherein the still image for position reference includes a line segment that displays the arrangement direction of the lattice intersections. 13. A two-dimensional code display device for displaying a two-dimensional code in which a binary signal is combined on a display device included in a terminal device, wherein the two-dimensional code display device is configured to represent one concept while being displayed on the display device. A control device having a function of storing or generating the first unit image and the second unit image is provided, and the control device determines a display position of the binary signal on a display screen of the display device. Setting a plurality of grid intersections, assigning a binary signal corresponding to the two-dimensional code to be displayed to the plurality of grid intersections, and assigning the grid intersections to the grid intersection corresponding positions on the display screen A two-dimensional code display screen is produced by selectively displaying the first unit image and the second unit image in a state associated with the logical value of the generated binary signal. 2-dimensional code display device for, characterized in that the steps of the execution. 14. The two-dimensional code display according to claim 13, wherein the control device stores or generates the same as the background image displayed on the display screen as the second unit image. apparatus. 15. The control device according to claim 13, wherein the control device has a function of storing or generating an image showing a thing in the natural world or a geometrical image as the unit image. Dimension code display device. 16. The control device is configured to generate the two-dimensional code display screen as a plurality of time-divided screens, and at least one of the first and second unit images is displayed in each time-division screen. All the time-division screens are combined and displayed in a superimposed manner by displaying them in a distributed manner.
13. A dimension code is expressed, and the dimension code is expressed as follows.
The two-dimensional code display device according to any one of 5 above. 17. The two-dimensional code display device according to claim 16, wherein the control device displays the plurality of time-division screens in a predetermined order so that the displayed unit image appears displaced. A two-dimensional code display device characterized by being controlled to 18. A two-dimensional code display device for displaying a two-dimensional code in which a binary signal is combined on a display device of a terminal device, wherein a control device having a function of storing or generating a predetermined unit image is provided. The control device sets a plurality of grid intersections for determining a display position of the binary signal on a display screen of the display device, and a binary value corresponding to a two-dimensional code to be displayed at the plurality of grid intersections. Assigning a signal, setting a grid intersection to which one logical value of the binary signal is allocated among the grid intersections as an image disappearance grid intersection, and a step other than the image disappearance grid intersection on the display screen. While generating an image corresponding to a display image in a state in which a region other than a predetermined range centered on the region or its grid intersection is filled with the unit image group, A step of generating a plurality of time-division screens in which a plurality of unit images are dispersed in different layouts in each screen by time-division of the display screen indicated by the image; And a step of sequentially displaying the plurality of time-division screens on the two-dimensional code display device. 19. The two-dimensional code according to claim 18, wherein the control device has a function of storing or generating an image showing a thing in a natural world or a geometrical image as the unit image. Display device. 20. The two-dimensional code display device according to claim 18, wherein the control device displays the plurality of time-division screens in a predetermined order so that the displayed unit image is displaced. A two-dimensional code display device characterized by being controlled to be visible. 21. The two-dimensional code display device according to claim 20, wherein when the control device displays the plurality of time-division screens in the predetermined order, each of the time-division screens is displayed in the plurality of time-division screens. A two-dimensional code display device, wherein the plurality of unit images to be displayed are controlled so that the displacement amount and the displacement direction are nonuniform in at least one direction. 22. The control device, when displaying a two-dimensional code having the position detection pattern, displays the position detection pattern using the image vanishing grid intersection. 2 in any one of
Dimension code display device. 23. The control device, in the display screen,
23. A still image for position reference set in a predetermined positional relationship with the grid intersection is displayed.
The two-dimensional code display device according to any one of 1. 24. The two-dimensional code display device according to claim 23, wherein the control device displays a line segment for displaying the arrangement direction of the lattice intersections in the position reference still image. Two-dimensional code display device. 25. The method according to any one of claims 1 to 3.
A method of reading a two-dimensional code displayed by a two-dimensional code display method or a two-dimensional code displayed by the two-dimensional code display device according to any one of claims 13 to 15 by an optical reading means, The steps of reading and temporarily storing the two-dimensional code screen displayed on the device, detecting the characteristics of the unit image in the stored two-dimensional code screen, and comparing the detected characteristics of the unit image with sample data are compared. Specifying the logical value of the binary signal corresponding to the unit image, and the array of the unit images in the stored two-dimensional code screen according to the specified logical value of the binary signal, the data consisting of a combination of binary signals. A method for reading a two-dimensional code, comprising the steps of: converting into a two-dimensional code of the array. 26. The two-dimensional code displayed by the two-dimensional code display method according to claim 4 or 5 or the two-dimensional code displayed by the two-dimensional code display device according to claim 16 or 17 is optically. In a method of reading by a different reading means, a step of reading a plurality of time-division screens displayed on the display device, a step of detecting characteristics of a unit image in each time-division screen, and a detection for each time-division screen Comparing the characteristics of the unit image with the sample data to identify the logical value of the binary signal assigned to each grid intersection, and the binary signal identified for each of the plurality of time division screens in each time division screen. By performing a logical operation for each of the same grid intersections, the array of unit images in the two-dimensional code display screen before time division is used as a data consisting of a combination of binary signals. 2-dimensional code reading method characterized by performing the steps of: converting the two-dimensional code array. 27. A two-dimensional code displayed by the two-dimensional code display method according to claim 6.
Alternatively, in the method for reading the two-dimensional code displayed by the two-dimensional code display device according to any one of claims 18 to 22 by an optical reading means, a plurality of time-division screens displayed on the display device are displayed. A step of reading, a step of creating a composite image by superimposing the read time-division screens, a step of specifying the center position of an area in which the unit image is not displayed in the composite image, and a specified center position The step of specifying the position of the grid intersection in the composite image based on the above, and the logical value of the binary signal assigned to the grid intersection based on the presence or absence of the unit image displayed at the specified position of the grid intersection. And a two-dimensional code of a data array composed of a combination of binary signals is reproduced based on the determination result for each lattice intersection. 2-dimensional code reading method characterized by performing the steps, a. 28. The two-dimensional code displayed by the two-dimensional code display method according to claim 11 or 12 or the two-dimensional code displayed by the two-dimensional code display device according to claim 23 or 24 is optically. A method of reading by a different reading means, a step of reading a plurality of time-division screens displayed on the display device, a step of creating a composite image by superimposing the read time-division screens, The step of specifying the position of the grid intersection in the composite image based on the position reference still image displayed in, and the grid intersection based on the presence or absence of the unit image displayed at the specified position of the grid intersection The logical value of the binary signal assigned to is determined, and the combination of binary signals is determined based on the determination result for each lattice intersection. 2-dimensional code reading method characterized by performing the steps of reproducing the two-dimensional code data sequence, the. 29. The method according to any one of claims 1 to 3.
A device for reading a two-dimensional code displayed by a two-dimensional code display method or a two-dimensional code displayed by the two-dimensional code display device according to any one of claims 13 to 15, wherein the two-dimensional code is optically read. A reading unit for reading; and a control unit for analyzing read data of the reading unit, the control unit reading and temporarily storing a two-dimensional code screen displayed on the display device; The step of detecting the characteristic of the unit image in the two-dimensional code screen, and the step of comparing the detected characteristic of the unit image with the sample data to specify the logical value of the binary signal corresponding to the unit image. According to the logical value of the binary signal, the array of the unit images in the stored two-dimensional code screen is a two-dimensional data array composed of a combination of binary signals. A two-dimensional code reading device, which comprises the steps of: converting into a code; 30. A device for reading a two-dimensional code displayed by the two-dimensional code display method according to claim 4 or 5, or a two-dimensional code displayed by the two-dimensional code display device according to claim 16 or 17. In the above, a reading means for optically reading the two-dimensional code and a control means for analyzing read data of the reading means are provided, and the control means comprises a plurality of time-division screens displayed on the display device. , A step of detecting the features of the unit image in each time-division screen, a comparison of the features of the unit image detected for each time-division screen with sample data, and a binary signal assigned to each lattice intersection. Specifying the logical value of each of the plurality of time-division screens, and the logical operation for each of the same lattice intersections in each time-division screen for the binary signal specified A two-dimensional code characterized by executing a step of converting the array of unit images in the two-dimensional code display screen before time division into a two-dimensional code of a data array composed of a combination of binary signals. Reader. 31. A two-dimensional code displayed by the two-dimensional code display method according to claim 6.
Alternatively, in a device for reading a two-dimensional code displayed by the two-dimensional code display device according to any one of claims 16 to 22, a reading unit that optically reads the two-dimensional code and read data of the reading unit is provided. And a control unit for analyzing, wherein the control unit reads a plurality of time-division screens displayed on the display device, and creates a composite image by superimposing the read time-division screens. A step of specifying a center position of an area in which the unit image is not displayed in the composite image; a step of specifying a position of a grid intersection point in the composite image based on the specified center position; The logical value of the binary signal assigned to the lattice intersection is determined based on the presence / absence of a unit image displayed at the position of the lattice intersection. Together, the two-dimensional code reading device comprising the steps of reproducing the two-dimensional code, to the execution of the data sequence consisting of the combination of the binary signal based on the determination result for each grid intersection. 32. A device for reading a two-dimensional code displayed by the two-dimensional code display method according to claim 11 or 12, or a two-dimensional code displayed by the two-dimensional code display device according to claim 23 or 24. In the above, a reading means for optically reading the two-dimensional code and a control means for analyzing read data of the reading means are provided, and the control means comprises a plurality of time-division screens displayed on the display device. And a step of creating a composite image in which the read time-division screens are composited in an overlapping manner, and a grid intersection point in the composite image based on the position reference still image displayed in the composite image. Based on the step of specifying the position and the presence or absence of the unit image displayed at the position of the specified grid intersection, the grid intersection is assigned. Discriminating a logical value of the binary signal obtained, and reproducing a two-dimensional code of a data array composed of a combination of the binary signals based on the discrimination result for each lattice intersection. A two-dimensional code reading device.