JPH05217011A - System for converting bar code into data - Google Patents

Abstract

PURPOSE:To easily execute a computer program processing by converting the bars and spaces of a bar code into the ON/OFF of dots and expressing the ON/OFF of each dot correspondingly to one bit. CONSTITUTION:The bars and spaces of each bar code are expressed by the ON/OFF of respective dots correspondingly to one dot of one dot computer data. In the case of CODE39 e.g. a bar code of asterisks '*' is expressed (A) by the ON/OFF of dots in a dot matrix of 160X40 asterisks, data (B) are obtained by expressing each dot in a horizontal row correspondingly to one bit and the character code data (C) of 5 bytes are obtained by displaying the data (B) by a hexadecimal expression. Thus each bar code in the CODE39 corresponding to each unit character or each unit code is converted into 5-byte character code data. A real bar code is formed (inverse transformation) by using a converted character code.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bar code data conversion system, and more particularly to a bar code data conversion system for converting a bar code into computer processable data.

[0002]

2. Description of the Related Art In the case of a business application in which a bar code is processed by a computer and printed, the bar code is not considered as image data and is printed using a font like a general character of a printer. More specifically, depending on the printer model, a barcode is registered as an external character, or printing is performed by using a barcode generator of Blinter.

The method using external characters cannot be used in a device with a small number of characters that can be registered. For example, when a bar code is output from a general-purpose computer that transmits a facsimile, only 8 external characters can be registered with this device. This external method cannot be used, and the barcode generator method cannot be used unless the device has the function.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bar code data conversion system in which a bar code can be converted into data of a predetermined byte / character and a bar code can be created from this data by a program. is there.

[0005]

The bar code data conversion system according to the present invention is a bar code bar (black part) and space (white part) assigned to each unit character and each unit symbol.
It is characterized by including means for substituting on and off of dots and means for making on and off of each dot after the substitution correspond to one bit of the computer.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, the bar (black portion) and the space (white portion) of the bar code are represented by dot on / off,
1 dot Corresponds to 1 dot of computer data.

For example, in the case of CODE39, the bar code pattern is composed of nine large and small bars or spaces, and three of them are always thick bars or spaces. That is, there are four types of bars, that is, a thin bar, a thick bar, a thin space, and a thick space, each of which is represented by the following dot pattern.

Thin bar → 11 thick bar → 1111111 thin space → 000 thick space → 00000000 All the bar codes can be represented by a combination of these four kinds of bits.

A specific example will be described with reference to FIG. In (A), the case of * (asterisk) is shown as an example of the bar code, which is expressed by on / off of dots by a 160 × 40 dot matrix, and each dot in one horizontal row is set to one bit If expressed in correspondence, the data shown in (B) can be obtained. Further, when the data of (B) is divided into 4 bits and displayed in hexadecimal, it becomes the character code data of 5 bytes as shown in (C).

In this way, the COD corresponding to each unit character and each unit symbol (hereinafter, these are referred to as a character)
When each barcode of E39 is converted into 5-byte character code data, it becomes as shown in FIG.

A case where an actual bar code is created (reverse conversion) using the conversion character code shown in FIG. 2 will be described with reference to FIG. In this example, any 7
It shows how to create a barcode for a digit character.

As shown in FIG. 3A, for example, 123456.
7-digit character string of 7 (Before and after the data
Character code) is as shown in (B). Here, the * at the beginning will be described. First, the 5-byte character code corresponding to * is divided into 8-bits (1 byte) as shown in (C), and the bytes are horizontally reversed.

The reason for this left-right inversion is that, when a bit string is serially processed, it is generally divided into character units (8-bit units) and read from the low-order bits respectively. However, if the serial processing can be performed without performing the horizontal inversion processing, this inversion processing is not necessary.

The above processing is performed for all 9 characters to obtain horizontal data. After that, this horizontal data is
Generates iteratively to generate vertical data.

Many devices for outputting an image using the data thus obtained can generally handle only MH-compressed or MR-compressed data. Therefore, data compression is performed by a program (MMIPF) having an image data editing and compression function. I do. However, this program processing is unnecessary if the device can handle uncompressed data.

When the dot density is set to 200 dpi, it is approximately vertical 2
A bar code of cm × width 4.5 cm is obtained as shown in FIGS.

[0018]

According to the present invention, the bar and space of the bar code respectively assigned to each character are converted into dot on / off, and each dot on / off after this replacement is converted into 1 bit. Since the configuration is expressed in correspondence with, there is an effect that computer program processing becomes easy.

Further, since the data expressed in bits can be used as the code data of a predetermined byte / character,
Bar codes can be written in the program, and bar codes can be easily generated by the program. Therefore, the program for generating the barcode can be ported as a medium, and the barcode can be output regardless of the model of the output device.

[Brief description of drawings]

FIG. 1A is a diagram in which a * bar code is represented by dot on / off; FIG. 1B is a diagram in which each dot on / off is represented by bit on / off in FIG. ) Is a diagram showing the bit data of (B) as a hexadecimal character code.

FIG. 2 is a diagram showing a bar code of each character by a hexadecimal character code.

FIG. 3 is a diagram illustrating a process of converting a 9-digit character string represented by a character code into an actual barcode.

Claims (2)

[Claims] 1. A means for replacing a bar (black part) and a space (white part) of a bar code respectively assigned to each unit character and each unit symbol with dot on / off, and means for replacing each dot after this replacement. A system for converting a bar code into a data, including means for associating ON / OFF with one bit of a computer. 2. The bar code data conversion system according to claim 1, wherein a bit string in which each dot is turned on and off is divided into predetermined bits and expressed in a plurality of bytes as a byte unit.