JPH08263580A - Identification code mark - Google Patents

Abstract

PURPOSE: To obtain a dummy three-dimensional identification code mark which can greatly increase the amount of information that can be displayed in a small space by displaying unit figures with >=2 kinds of color tone or hue. CONSTITUTION: The shape of black unit figures 1 and 1' is the same with a conventional two-dimensional code, but 2 kinds of color tone are used. Even when 2 kinds of color, e.g. red and black are used, the same result is obtained, but this constitution greatly increases the number of kinds of information, represented in two-dimensional code from conventional 2 to the 4th power = 16 to 3 to the 4th power = 81 kinds of information. Thus, when the amount of information is equal, the discrimination code mark can greatly be decreased in the number of squares of the two-dimensional code, so the number of pixels of a camera required for the code may be small and the visual field is therefore made correspondingly large. When the same space is used, a very larger amount of information can be represented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an identification code mark capable of displaying a large amount of information in a small space.

[0002]

2. Description of the Related Art Conventionally, a one-dimensional identification code mark for recognizing an object, called a "bar code", and black and white rectangular figures a and b are shown in FIG. A "two-dimensional code" that is displayed in a checkered matrix in A is known, but the appearance of a more space-efficient identification code mark has been desired.

[0003]

Therefore, the present invention provides a pseudo three-dimensional identification code mark, that is, a code display element in both the height and height directions, which can dramatically improve the amount of information that can be displayed in a small space. It is an object to obtain an identification code mark that can display the same amount of information as it is arranged.

[0004]

SUMMARY OF THE INVENTION The present invention has been made by the recent image processing technology capable of discriminating shapes, color tones, and colors, respectively. In the two-dimensional code identification code mark arranged in a line, the identification code mark is characterized in that the unit figure is displayed in two or more kinds of color tones or colors.

A second aspect of the present invention is an identification code mark characterized in that several kinds of unit figures are arranged in a matrix to display an identification code, and the color tone or color of the unit figure is displayed in two or more kinds. Is.

Further, the third invention is characterized in that several kinds of unit figures are arranged in a matrix, and the color tone or color of the figures is displayed in two or more kinds to display an identification code. Is an identification code mark.

[0007]

According to the first to third inventions, like the three-dimensional code, the amount of information that can be displayed can be dramatically improved.

[0008]

EXAMPLE 1 FIG. 2 shows Example 1 of the present invention, in which the black unit figures 1 and 1'have the same shape as a conventional two-dimensional code, but two kinds of color tones. It should be noted that the same applies to two types of colors, for example, red and black, but with this configuration, the type of information displayed by the conventional two-dimensional code shown in FIG. 1 is 2 4 = 16 types. But,
3 to the fourth power = 81 types, which is a dramatic improvement.

FIG. 3 shows a second embodiment of the present invention, in which two types of unit figures are a circle 2 and a square 3, and 2
Colors (shades) or colors (red and black) of various types,
In this case, 5 4 = 625 types of information can be displayed.

[0010]

[Different Embodiments] In order to facilitate understanding, two embodiments having a simple structure have been exemplified above. However, by increasing the types of graphics, the types of colors, and the number of unit graphics arranged in a matrix, It is possible to obtain an identification code mark in which the amount of information that can be displayed is dramatically increased like a three-dimensional code.

[0011]

According to the structure of the present invention, the following effects can be obtained.

(1) The space for the identification code mark is extremely small.

(2) Conventionally, when recognizing a two-dimensional code, it was a problem that the field of view could not be taken large due to the problem of the number of pixels of the camera. However, the identification code mark according to the present invention has the same amount of information. Since the number of squares of the two-dimensional code can be extremely reduced, the number of camera pixels required for the code can be reduced, and the field of view can be increased accordingly.

(3) On the contrary, if the space is the same, a marked amount of information can be displayed.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a conventional two-dimensional code identification code mark.

FIG. 2 is a diagram showing a first embodiment of the present invention.

FIG. 3 is a diagram showing a second embodiment of the present invention.

[Explanation of symbols]

 1,1 'black square unit figure 2,2' circle unit figure 3,3 'black square unit figure

Claims (3)

[Claims] 1. A unit figure arranged in a matrix.
The dimensional identification code mark is characterized in that the unit figure is displayed in two or more kinds of color tones or colors. 2. An identification code mark in which several types of unit figures are arranged in a matrix to display an identification code. 3. An identification code mark characterized in that several kinds of unit figures are arranged in a matrix, and the color tone or color of the figures is displayed in two or more kinds to display an identification code.