KR20180102441A - Generating image code - Google Patents

Abstract

The present invention provides a method for generating an image code representing variable data based on a shape capable of being recognized by a person. The image code generating method comprises the following steps: obtaining an image and data represented by the shape of the image; obtaining attribute information for representing the data as the shape of the image; generating a code word stream including at least one code word corresponding to the data based on the attribute information; and generating the image code in which at least one bitmap pattern corresponding to the at least one code word is placed in the shape of the image.

Description

Generating Image Code {GENERATING IMAGE CODE}

This specification relates to image code generation.

A barcode is a combination of patterns designed to be read by a computer. The barcode can be used to visually display information for identifying a product or information about the product and can be used in a printed form such as a product or a package of the product, So it is widely used. For example, the barcode may include a one-dimensional barcode combining black and white bars of different thicknesses, and a two-dimensional barcode of a plaid pattern. A two-dimensional barcode has more information than a one-dimensional barcode.

The present specification provides a method for generating image codes representing variable data based on a human perceptible shape.

An exemplary image code generation method includes: obtaining data represented as an image and a shape of the image; Obtaining attribute information for representing the data in the shape of the image; Generating a codeword stream including at least one codeword corresponding to the data based on the attribute information; And generating an image code in which at least one bitmap pattern corresponding to the at least one code word is arranged in the shape of the image.

The attribute information may include at least one of resolution information indicating resolution of the image and the image code, codeword information including at least one codeword representing data, bitmap pattern of a dot matrix mapped to the codeword The format information indicating the version of the image code, the version information indicating the version of the image code, and the format information indicating the format of the image code.

The generating of the codeword stream may include generating a bitstream including encoded data based on the attribute information, Generating a data stream to which an error code is added to the bitstream; Generating a symbol stream to which additional information is added to the data stream; And generating the codeword stream including at least one codeword based on the symbol stream.

The generating of the image code may include generating a pixel matrix including a bitmap pattern corresponding to the shape of the image based on the attribute information, wherein the pixel matrix corresponds to the shape of the image And at least one inactive pixel that does not correspond to the shape of the image.

In addition, the step of generating the image code may include assigning at least one code word included in the codeword stream to the at least one active pixel.

In addition, the step of generating the image code may comprise mapping the assigned at least one code word and the at least one dot matrix.

The generating of the image code may further include assigning at least one dot matrix that is mapped to the at least one codeword to at least one active pixel to which the at least one codeword is assigned based on the property information .

In addition, the dot matrix may include an NxM dot matrix (N, M is a natural number) including a bitmap pattern that identifies the codeword.

An exemplary image code generation apparatus includes: a communication unit for acquiring an image and data represented in a shape of the image; Acquiring attribute information for representing the data in the shape of the image, generating a codeword stream including at least one codeword corresponding to the data based on the attribute information, and transmitting the codeword stream to the at least one codeword A control unit for generating an image code in which at least one corresponding bitmap pattern is arranged in the shape of the image; And an output unit for printing the image code.

An exemplary image code recognition method includes recognizing an image code in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image; Obtaining attribute information for representing data from the image code in the shape of the image; Decoding a codeword stream including at least one codeword corresponding to the data based on the attribute information; And obtaining data represented in the shape of the image based on the codeword.

An exemplary image code recognition apparatus includes a recognition unit that recognizes an image code in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image; Obtaining attribute information for representing data from the image code in the shape of the image, decoding a codeword stream including at least one codeword corresponding to the data based on the attribute information, A control unit for acquiring data expressed in a shape of the image as a basis; And an output unit for displaying the data.

The techniques disclosed herein can provide a method of generating image codes of a human-recognizable shape.

In addition, the techniques disclosed herein can provide a method for generating image codes representing various kinds of variable data.

Further, the techniques disclosed in the present specification can provide a method of generating image codes containing variable data without sacrificing a separate space or aesthetics.

1 is a diagram showing an exemplary image code.
2 is a diagram showing an exemplary image code generation method.
3 is a diagram illustrating a method of generating an exemplary codeword stream.
4 is a diagram illustrating a method of generating an exemplary image code.
5 is a diagram illustrating an exemplary image and pixel matrix.
FIG. 6 shows a table showing the relationship between an exemplary code word and a dot matrix.
7 is a diagram showing an exemplary image code.
8 is a diagram showing an exemplary image code including variable data.
9, there is shown an exemplary image code generation apparatus.
10 is a diagram showing an exemplary image code recognition method.
11 is a diagram showing an exemplary image code recognition apparatus.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the scope of the technology disclosed herein. Also, the technical terms used herein should be interpreted as being generally understood by those skilled in the art to which the presently disclosed subject matter belongs, unless the context clearly dictates otherwise in this specification, Should not be construed in a broader sense, or interpreted in an oversimplified sense. It is also to be understood that the technical terms used herein are erroneous technical terms that do not accurately represent the spirit of the technology disclosed herein, it is to be understood that the technical terms used herein may be understood by those of ordinary skill in the art to which this disclosure belongs And it should be understood. Also, the general terms used in the present specification should be interpreted in accordance with the predefined or prior context, and should not be construed as being excessively reduced in meaning.

As used herein, terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the description of the technology, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals denote like or similar elements, and redundant description thereof will be omitted.

Further, in the description of the technology disclosed in this specification, a detailed description of related arts will be omitted if it is determined that the gist of the technology disclosed in this specification may be obscured. It is to be noted that the attached drawings are only for the purpose of easily understanding the concept of the technology disclosed in the present specification, and should not be construed as limiting the spirit of the technology by the attached drawings.

1 is a diagram showing an exemplary image code.

Referring to Figures 1 (a), 1 (b), and 1 (c), an exemplary image code is shown.

Symbology may refer to a rule or scheme that defines how data is represented by bar codes and / or codes. The symbol may also refer to a specific entity in which specific data is expressed in code according to a rule. Hereinafter, the symbol may be used interchangeably with the image code and / or the two-dimensional code.

An exemplary technique may represent a code based on a human perceptible shape. A human perceptible shape may be, for example, a mark for indicating the origin of a product, such as a trademark, a logo, etc., a name of the product, a label for the product, A background image, and the like.

Exemplary techniques may provide a method of generating image codes of a shape that can be perceived by a person. For example, an exemplary technique can express data expressed in a two-dimensional pattern in the form of a human-recognizable " LC ". Although people do not know the specific contents of the data that the two-dimensional pattern means, they can perceive that it is data related to 'LC' based on the shape of the image code.

In addition, the exemplary techniques may provide image codes of the same shape that contain different variable data. When people perceive a visual figure, they have the characteristic of ignoring details and recognizing them in the form of patterns. For example, when recognizing the shape of the image code of Fig. 1 (a), Fig. 1 (b), and / or Fig. 1 (c), people recognize all three shapes in the form of the same 'LC' can do.

However, the actual three image codes have different detailed shapes and can contain different data, respectively. For example, the detailed shape 110 of the image code of Figure 1 (a), the detailed shape 120 of the image code of Figure 1 (b), and / or the detailed shape 130 of the image code of Figure 1 ) May have different shapes in detail.

Thus, the exemplary technique may include not only one data in one form of image code but also various kinds of variable data in one form of image code.

In addition, the exemplary techniques can provide a method for generating image codes containing variable data without sacrificing separate space or aesthetics. For example, an exemplary technique can generate a logo of a product as an image code and print it on the product. In this case, by using an image code according to an exemplary technique on the appearance of the product or the appearance of the package, it is possible to save a space that must be reserved for attaching or printing a separate bar code or the like.

Hereinafter, a method of generating an image code representing variable data in a shape of an image recognizable by a person will be described in detail.

2 is a diagram showing an exemplary image code generation method.

Referring to FIG. 2, the electronic device can acquire data expressed in the form of an image and / or an image using a communication unit, a user interface, and / or a control unit (S210).

For example, an image may include an image having a shape that an electronic device is intended to represent using data.

In addition, the data may include variable data that the electronic device includes within the shape of the image. For example, the data may include a country code, a manufacturer code, a product code, a verification code, a serial number, and / or product related information that may be printed on the product. In addition, the data can be variable and have various values for the shape of one image. Depending on the embodiment, the data may comprise at least one codeword corresponding to the variable data.

Further, the electronic apparatus can acquire attribute information for expressing the data in the shape of the image using the user interface and / or the control unit (S220).

The electronic device can receive the attribute information from the user via the user interface. Further, the electronic apparatus may directly generate attribution information using the control unit.

The attribute information may include at least one of resolution information, codeword information, dot matrix information, version information, and / or format information.

The resolution information may indicate the resolution of the image and image code. For example, the resolution information may include image resolution information indicating the resolution of the acquired image, and / or image code resolution information indicating the resolution of the generated image code. The electronic device may generate image code resolution information of an appropriate size based on the magnitude of the image resolution and / or the amount of data.

The codeword information may also include at least one codeword representing the data. For example, the codeword information may include numbers, letters, and / or symbols.

Also, the dot matrix information may include information on a bit map pattern of a dot matrix that is mapped to a codeword. The dot matrix information may also include information about the size and / or resolution of the dot matrix. For example, a pixel included in a pixel matrix may be assigned a codeword. Also, the assigned codeword may be mapped to a dot matrix. Also, a bitmap pattern may be assigned to the mapped dot matrix.

In addition, the version information can indicate the version of the image code. For example, the version information may include information on which mode to encode and to generate a codeword stream.

Further, the format information may indicate the format of the image code. For example, the format information may include specific parameters for encoding and / or generating a codeword stream based on the version information. The format information may also include information on the size and / or resolution of the dot matrix.

For example, version information and / or format information may include information related to error detection and / or error correction levels.

Further, the electronic device can generate a codeword stream including at least one codeword corresponding to the data based on the attribution information using the control unit (S230).

For example, the electronic device can generate a codeword stream by encoding data based on attribute information.

Specifically, the electronic device can generate the bit stream by encoding the data based on the attribute information. In addition, the electronic device can generate a data stream by adding an error code to the bitstream. The electronic device can also generate a symbol stream by adding additional information to the data stream. The electronic device may also generate a codeword stream that includes at least one codeword based on the symbol stream.

In addition, the electronic device may generate an image code in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of the image using the control unit (S240).

Electronic devices can visualize data in a form that can be perceived by humans.

For example, the electronic device may generate a pixel matrix that includes a bitmap pattern corresponding to the shape of the image based on the attribute information. The electronic device may also assign at least one codeword contained in the codeword stream to at least one active pixel. In addition, the electronic device may map at least one codeword and at least one dot matrix assigned thereto. The electronic device may also assign at least one dot matrix that is mapped to at least one codeword to at least one active pixel to which at least one codeword is assigned.

Further, the electronic apparatus can print the image code using the output unit.

3 is a diagram illustrating a method of generating an exemplary codeword stream.

Referring to Fig. 3, an electronic device can generate a codeword stream including at least one codeword corresponding to data, based on attribute information, using a control unit.

First, the electronic device can generate a bitstream including encoded data based on the attribute information using the control unit (S310).

The electronic device can generate the bit stream by encoding the data based on the attribute information. Further, the electronic device can change the data into a bit stream according to the mode. When the mode is changed, the electronic device can add a mode indicator to the bitstream. Further, the electronic device can add a terminator to the bit stream when the mode is changed.

Further, the electronic apparatus can generate a data stream to which an error code is added to the bitstream using the control unit (S320).

For example, the error code may include an error detection code and / or an error correction code.

The error code may also include at least one of a parity code, a Hamming code, a Bose-Chadhuri-Hocquenghem code, and / or a Reed-Solomon code. have.

The parity code is a code that can check only one bit error by adding a parity check bit of 1 bit in addition to the data bits to check the error of the code. The parity code can be transmitted by adding one bit of information indicating whether the number of '1's included in the bitstream is even or odd.

The Hamming code can detect the error itself and correct only one bit error or code that can be corrected. The Hamming code requires a lot of redundant bits for error detection and correction other than the data bits. In the Hamming code, bits in the order of 2 ⁿ are parity bits for error detection. The Hamming code can name the number of data bits excluding the total number of bits in the code and the number of error processing bits in the form of (whole, data). The Hamming code may include a 'Hamming (7, 4) code' using 3 bits of parity bits for 4 bits of data transmission.

The BCH code is a cyclic code suitable for correcting any error.

The Reed-Solomon code is a non-binary cyclic code that can correct cluster-type errors. The Reed-Solomon code not only has excellent error correction capability but also can correct both random errors and burst errors occurring on the communication path.

Further, the electronic apparatus can generate a symbol stream to which the additional information is added to the data stream by using the control unit (S330).

The additional information may be information added to generate a symbol stream. For example, the side information may include padding information.

Further, the electronic device can generate a codeword stream including at least one codeword based on the symbol stream using the control unit (S340).

For example, a codeword may include numbers, letters, and / or symbols. The codeword stream may also include at least one codeword, such as {6, 4, 5, 1, 5, 1, 5, 3, 4}.

4 is a diagram illustrating a method of generating an exemplary image code.

Referring to FIG. 4, an electronic device can generate an image code in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image using a control unit.

First, the electronic device can generate a pixel matrix including a bitmap pattern corresponding to the shape of the image based on the attribute information using the control unit (S410).

For example, the size of the pixel matrix may be IxJ (I, J is a natural number). The electronic device may generate a pixel matrix of a suitable size based on the magnitude of the image resolution and / or the amount of data.

The pixel matrix may also include at least one active pixel corresponding to the shape of the image and at least one inactive pixel not corresponding to the shape of the image.

Further, the electronic device can use the control unit to allocate at least one codeword included in the codeword stream to at least one active pixel (S420).

For example, at least one active pixel may be assigned at least one code word corresponding to the data, and at least one inactive pixel may be assigned a value of '0'.

In addition, the electronic device may map at least one codeword and at least one dot matrix using the control unit (S430).

For example, one codeword assigned to an active pixel of a pixel matrix may be mapped to one dot matrix, which may associate a codeword with a dot matrix.

Further, the electronic device can use the control unit to allocate at least one dot matrix that is mapped to at least one code word to at least one active pixel to which at least one code word is assigned based on the property information (S440 ).

The electronic device can assign a dot matrix to the active pixels. That is, each active pixel may be populated with a dot matrix containing a bitmap pattern that identifies each codeword. As a result, the pixel matrix corresponding to the image can be represented by a finer dot matrix.

Also, since a dot matrix corresponding to variable data can be assigned to the pixel matrix of the same shape, the image code can represent various data.

For example, the size of the dot matrix may be N x M (N, M is a natural number).

5 is a diagram illustrating an exemplary image and pixel matrix.

Referring to Figure 5 (a), an exemplary image is shown.

For example, the image may be in the shape of a cross.

Referring to FIG. 5 (b), a pixel matrix including a bitmap pattern corresponding to the shape of an image is shown.

The electronic device may generate image code resolution information of an appropriate size based on the magnitude of the image resolution and / or the amount of data. For example, the image code resolution information may indicate 5 x 5 pixels and / or 10 x 10 dots. In this case, one pixel may include 2 x 2 dots.

The pixel matrix may include an active pixel 510 corresponding to a cross shape and / or an inactive pixel 520 not corresponding to a cross shape.

Referring to Fig. 5 (c), at least one pixel to which at least one codeword is assigned is shown.

At least one active pixel may be assigned at least one codeword contained in the codeword stream. Also, at least one inactive pixel may be assigned a value of '0' and / or 'null'.

FIG. 6 shows a table showing the relationship between an exemplary code word and a dot matrix.

Referring to FIG. 6, the codeword information may include '0', '1', '2', '3', '4', '5', and / or '6'.

In addition, the dot matrix information may include information on a bitmap pattern of a dot matrix that is mapped to each codeword. For example, the dot matrix may include at least one active dot 610 and / or at least one inactive dot 620. The bitmap pattern of the dot matrix may be represented by at least one active dot and / or at least one inactive dot.

 Also, the dot matrix information may include information on the size and / or resolution of the dot matrix. For example, the size of the dot matrix may be 2 x 2 dots.

7 is a diagram showing an exemplary image code.

Referring to Fig. 7, an exemplary image code 710 is in the shape of a cross. In addition, at least one bitmap pattern corresponding to the data is filled in the shape of the cross.

The codeword of the data represented in the shape of the cross may be {6, 4, 5, 1, 5, 1, 5, 3, 4}. In this case, people see the image code and do not know the specific details of the data. However, since the shape of the image code is a shape of a cross, people can see that the image code includes data related to the cross.

8 is a diagram showing an exemplary image code including variable data.

Referring to Figs. 8 (a) to 8 (d), an image code having the same shape as the whole is shown. For example, the image code may be in the form of a cross as a whole.

However, the detailed shape of each image code may be different. That is, each image code may include a bitmap pattern corresponding to different data. That is, the image code may contain variable and variable data for the same shape.

9, there is shown an exemplary image code generation apparatus.

Referring to FIG. 9, an exemplary image code generation apparatus 900 includes a communication unit 910. And may include at least one of a user input unit 920, a control unit 930, and / or an output unit 940. The specific contents of the image code generation apparatus 900 may include all of the above-described image code generation methods.

The communication unit 910 may receive an image, data represented in the form of an image, and / or additional information through a communication network. The communication network may include both a wired network and / or a wireless network.

For example, the communication unit 910 may include one or more components that allow communication between the electronic device 900 and an external device or between the electronic device 900 and the server. For example, the communication unit 910 may include a local communication unit, a mobile communication unit, and a broadcast receiving unit.

The user input 920 may receive an image from the user, data represented in the shape of the image, and / or additional information. Also, the user input unit 920 may receive attribute information for displaying data in the form of an image from a user.

For example, the user input unit 920 may include a keyboard, a mouse, a dome switch, a touch pad (contact type capacitance type, pressure type resistive film type, infrared ray detection type, surface ultrasonic wave conduction type, , Piezo effect method, etc.), a jog wheel, a jog switch, and the like, but is not limited thereto.

The control unit 930 may include a data analyzer that obtains data represented in the form of images and images, and obtains attribute information for representing the data in the form of images.

The control unit 930 may generate a codeword stream including at least one codeword corresponding to the data based on the attribute information. For example, the control unit 930 may include a data encoder for generating a bitstream including data encoded based on the attribute information, an error recovery encoder for generating a data stream to which an error code is added to the bitstream, A codeword stream encoder that generates a codeword stream containing at least one codeword based on the symbol stream, and a codeword stream encoder that generates a codeword stream based on the symbol stream.

In addition, the control unit 930 may include a visualizer for generating image codes in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image.

The output unit 940 can print the image code. Also, the output unit 940 can display the image.

For example, output 940 may include a bar code printer, an image code printer, and / or a display.

10 is a diagram showing an exemplary image code recognition method.

Referring to FIG. 10, the exemplary image code recognition method may perform all the inverse processes of the image code generation method described above.

First, the electronic device can recognize an image code in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image using the recognition unit (S1010).

In addition, the electronic device can acquire attribute information for representing data from the image code in the shape of the image using the control unit (S1020).

Further, the electronic apparatus can decode a codeword stream including at least one codeword corresponding to the data based on the attribution information using the control unit (S1030).

For example, the electronic device may decode a codeword stream comprising at least one codeword to obtain a symbol stream. In addition, the electronic device can decode the symbol stream to obtain a data stream and additional information. The electronic device can also decode the data stream to obtain a bitstream and an error code. In addition, the electronic device can decode the bit stream to obtain codewords corresponding to data and / or data represented in the form of an image.

Further, the electronic apparatus can acquire data expressed in the shape of the image based on the codeword using the control unit (S1040).

Further, the electronic apparatus can display data using the output unit.

11 is a diagram showing an exemplary image code recognition apparatus.

Referring to FIG. 11, an exemplary image code recognition apparatus may include all of the above-described image code generation methods. Further, the image code recognition apparatus can perform all of the inverse processes of the above-described image code generation apparatus and / or image code generation method.

Exemplary electronic device 1100 may include at least one of recognition portion 1110, control portion 1120, and / or output portion 1130.

The recognition unit 1110 can recognize image codes in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image.

The control unit 1120 obtains the attribute information for representing the data from the image code in the shape of the image, decodes the codeword stream including at least one codeword corresponding to the data based on the attribute information, It is possible to acquire data expressed in the shape of the image as a basis.

For example, the control unit 1120 may include a codeword stream decoder for decoding a codeword stream including at least one codeword to obtain a symbol stream, an additional information decoder for decoding the symbol stream to obtain a data stream and additional information, At least one of an error recovery decoder that decodes the data stream to obtain a bitstream and an error code, and / or a data decoder that decodes the bitstream to obtain a codeword corresponding to data and / or data represented in the shape of the image .

Output unit 1130 can display data.

In the foregoing, preferred embodiments of the present invention have been described with reference to the accompanying drawings. Herein, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and should be construed as meaning and concept consistent with the technical idea of the present technology.

The scope of the present technology is not limited to the embodiments disclosed in the present specification, and the present invention may be modified, changed, or improved in various forms within the scope of the present invention.

900: Image code generating device 910:
920: user input unit 930:
940:

Claims (11)

Obtaining data representing the image and the shape of the image;
Obtaining attribute information for representing the data in the shape of the image;
Generating a codeword stream including at least one codeword corresponding to the data based on the attribute information; And
Generating an image code in which at least one bitmap pattern corresponding to the at least one code word is arranged in the shape of the image
/ RTI > The method according to claim 1,
Wherein,
A dot matrix including information on resolution of the image and resolution of the image code, codeword information including at least one codeword representing data, information about a bitmap pattern of a dot matrix mapped to the codeword, Information indicating a version of the image code, version information indicating a version of the image code, and format information indicating a format of the image code. The method according to claim 1,
Wherein the step of generating the codeword stream comprises:
Generating a bitstream including encoded data based on the attribute information;
Generating a data stream to which an error code is added to the bitstream;
Generating a symbol stream to which additional information is added to the data stream; And
And generating the codeword stream including at least one codeword based on the symbol stream. 3. The method of claim 2,
Wherein the generating the image code comprises:
Generating a pixel matrix including a bitmap pattern corresponding to the shape of the image based on the attribute information,
Wherein the pixel matrix comprises at least one active pixel corresponding to the shape of the image and at least one inactive pixel not corresponding to the shape of the image. 5. The method of claim 4,
Wherein the generating the image code comprises:
And allocating at least one codeword included in the codeword stream to the at least one active pixel. 6. The method of claim 5,
Wherein the generating the image code comprises:
And mapping at least one codeword and at least one dot matrix to the assigned codeword. The method according to claim 6,
Wherein the generating the image code comprises:
And assigning at least one dot matrix that is mapped to the at least one code word to at least one active pixel to which the at least one code word is assigned based on the property information. 8. The method of claim 7,
Wherein the dot matrix comprises:
And an NxM dot matrix (N, M is a natural number) including a bitmap pattern identifying the codeword. A communication unit for acquiring an image and data represented by the shape of the image;
Acquiring attribute information for representing the data in the shape of the image, generating a codeword stream including at least one codeword corresponding to the data based on the attribute information, and transmitting the codeword stream to the at least one codeword A control unit for generating an image code in which at least one corresponding bitmap pattern is arranged in the shape of the image; And
An output unit for printing the image code
And an image code generator for generating the image code. Recognizing an image code in which at least one bitmap pattern corresponding to at least one codeword is arranged in the shape of an image;
Obtaining attribute information for representing data from the image code in the shape of the image;
Decoding a codeword stream including at least one codeword corresponding to the data based on the attribute information; And
Obtaining data represented in the shape of the image based on the codeword
Wherein the image code recognition method comprises the steps of: A recognition unit for recognizing image codes in which at least one bitmap pattern corresponding to at least one code word is arranged in the shape of an image;
Obtaining attribute information for representing data from the image code in the shape of the image, decoding a codeword stream including at least one codeword corresponding to the data based on the attribute information, A control unit for acquiring data expressed in a shape of the image as a basis; And
An output unit
And the image code recognition device.

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