JPS60205780A - Method and device for data read - Google Patents

Abstract

PURPOSE:To detect easily the error of scanning due to manual operation of a bar code reader by arrangement of start and stop characters. CONSTITUTION:In the first line, a character (a) is arranged as the start character and a stop character (b) is arranged in the end of the line. In the second line, the character (b) is used as the start character and a character (c) is used as the stop character. Hereafter, characters (b), (c), and (d) are used as start and stop characters repeatedly similarly. One character 1a of the bar code is read when the bar code reader is scanned, and the control is advanced to the next step by YES because the character 1a is a control character, and a read flag is checked. In the next step, YES is attained because the first read character 1a coincides with the character (a) inputted first to a control register. If the second line is scanned erroneously, the first head character does not coincide with the character in the control register because the first character 2a of the second line is (b), and the control is advanced to ON, and an error is displayed on a display device 13 and an error tone is sounded by a buzzer 14 in a step S11.

Description

[Detailed Description of the Invention] This invention relates to a device, and in particular to a method and device for reading printed data consisting of a black and white pattern (hereinafter referred to as a barcode) using an optical reader (hereinafter referred to as a barcode reader). It is something.

The barcode has a black and white pattern, as shown in Figure 1.
], various O barcodes representing various characters and symbols have been standardized, but for example, NW-7
1mX (Narrow Wide -7 1-1ex
As shown in Table 1, each character consists of 7 elements (4 bars (Bl-B4) and 3 spaces between the heart bar (Bl-B4)).
It consists of 10 numeric characters, 6 alphabetic characters (A-P), and the start/stnob characters (a-d) as control characters. llii 3'A.

As described above, the data is divided into multiple blocks (lines) as shown in FIG. 1
9' It soaks away. Therefore, when reading a large amount of data, there is a possibility that the twins may accidentally jump out and be read out.

Conventionally, in order to prevent these errors, as shown in FIG. 2, the character next to the start character a of each frame is used as the character indicating the line number, and the actual data starts from the next character. Note that FIG. 2a shows a start character, which is actually represented by a bar code.

Also, the next number 1 and the 0 stop character a represented by the bar code often use the same character as the start character.

As mentioned above, conventionally, characters representing line numbers are included in the data, which increases the number of data characters by one or more extra characters, which not only increases the number of characters to read, but also increases the number of characters to compensate for the increased number of characters. The object of the present invention is to provide a method and apparatus for reading the order of data lines without error, without adding characters representing line numbers as in the prior art. For more details, please refer to the NW-7 HEX method.
To provide a method and an apparatus for reading the stonob characters by combining them since there are four characters from a to d without making any errors in the order.

Hereinafter, a detailed explanation will be given according to the embodiments shown in FIGS. 3 to 7.

FIG. 3 shows how data is arranged by barcodes of the present invention. In the first line, a is placed as the start character. Although a is indicated by a letter, it is actually displayed by a bar code. For convenience of explanation, it is represented by a. The next number 11 is a barcode and represents one character. The actual situation is as shown in Figure 1.

Next, at the end of one line, a stop character b is placed.

In the second line, the start character is b and the character character is C. On the third line, the start character is 01, the stop character is d1, and on the fourth line, the start character is d.

The stop character is a1 on the fifth line, the start character is a1, and the stop character is b, and on the sixth line, the start and stop characters are the same as in the second line. That is, the stop character of the current line and the start character of the next line are the same character, and the control characters a, bXC, and d are used repeatedly. The last line indicates the end of the data by the ODO code.

A line number readable by the operator is attached to the beginning of each line.

FIG. 4 is a block diagram of an apparatus for reading barcodes arranged as described above.

Reference numeral 11 denotes a barcode reader which allows an operator to manually scan a barcode. The output of the barcode reader 11 is input to a controller 12, which performs signal detection and error detection. A display 13 displays the number of lines read or errors. 14 is a buzzer that emits different sounds depending on whether it is read correctly or incorrectly.

The controller operates according to the flowchart shown in FIG. The initial state is set in steps Sl and S2. The reading flag becomes +71 when one start character is read, and 1-01 when a J start character is read. In step S2, the first character, in this case a, is entered into the control register. When the barcode reader is scanned, one character 1a of the barcode is read in step S3. Since 1a is a control character, the answer is YES in step S4, and the process goes to step S5. In step S5, the dL take flag is checked. In this case, the initial state is 1-0.'' From there, the answer is yes and the process goes to step S6. In step S6, the first character 1a read is the character 1a because the character 1a is read in step S2.
Since a is also a, they match, so the answer is yes. If you scan the second line by mistake, the first character 2a on the second line is [), so it doesn't match and goes to NO, SL, 1 to the error display z
ie I 31. , an error sound is emitted by the buzzer 14.

If YES in S6, it indicates that a 0 start character was read in which rlJ is set in the read flag in step S7. In step S8, the next character after a is entered into the control register. Then, the process returns to step S3.Next, the barcode reader 11 is scanned and character 1b is read.In step S4, the result is "No" because it is not a control character, and in step S9, the reading flag is set to 1-1.
Therefore, go to step 10 and input the read data lb into the text area in step 810.Step 83
-84-89-8IO is read repeatedly until one line ↓ is completed. Next, the character at the end of the data line ↓ is read in step S3. Since the stop character In is b, the answer is yes in step S4, and the read flag is checked in step S5. Since the read flag is "J", the result is NO, and in step 812, a check is made to see if it matches the character in the control register.

Since b was entered in the control register at step s8, it becomes ``yes'' and goes to step SI3.
. In step S1:3, to indicate that one line of 12-night has been read, "Io" is entered in the 1θ° reading flag.

At step 814, "Φ1" is displayed on the display 13 to indicate that one line has been read correctly, and a sound is generated by the buzzer 14 to indicate that the line has been read correctly. In step 815, it is checked whether the needle is dry or not, and since the answer is NO, the process returns to step S3.

In step 812, if the next line winter is read by scanning the barcode reader 11 incorrectly, the stop character of the line winter is C, so it will match f, and the result will be step 8
An error is displayed in step 11.

Next, in step S3, the next line winter is read, and the data is read in the same manner as described above. If line 3 is +i7e by mistake, the start character at the line point is C because the control register nihab is entered in step S6, so the result is NO, and an error is displayed in step Sll.

As described above, the data lines are read one after another, and finally the end line r ODOJ is read, a judgment is made in step S15, all data reading is finished in step 816, and the end is displayed on the display 13. .

By adding a readable character 1d to the beginning of each data line, the operator can always check whether the data is being read correctly or not if it matches the display on the display 13ρ.

Start and stop characters are a, bX, and c.

Regarding the four lines d, if there are no errors in four lines even if these are used repeatedly, line errors can be detected, and there will be no errors in more than four lines.

Other embodiments will be described in FIGS. 6 and 7. 6th
As shown in the figure, start and stop characters are 1st and 7th is the same sentence? a is used, and in the next line, bf: is used. Similarly, the 3rd line repeats C14th line I''id, and the 5th line repeats a.

With the above configuration, the controller 12 becomes a flowchart as shown in FIG. The operation is the same as in the flowchart of FIG. 5, but the position of step S8 is different, and the next start and start character are inserted at the end of the line. (2) Start reading the line 1. Set the sI/knob character to a and set it to the initial state in steps S1 and S2. The data is read in step S3. The first character is a control character and the 6-digit C capture flag is lOj, so step S4 and S5 are yes-r.
Compare with ``t'' in trolllensk and match J-ru to yc
In step S7, take b" and put [l-1 in the flag. Hold the knob S3 until the stop character is read.
-84-89- Repeat the SIO loop. When the stop character is read, it is compared in step 812 and ye
s, steps 813 and S14 are performed, and the next start and stop character b is entered in the control register in step S8.

Then read the next line. The start and stop characters for the next line are b, so if you scan the next line correctly, it will be read correctly, but if you read another line by mistake, for example the third line, the start and stop characters are C. The error can be discovered in step S6.

As explained above, according to the present invention, errors in manual scanning can be easily detected by the arrangement of start and stop characters.

[Brief explanation of the drawing]

FIG. 1 shows a barcode arrangement, FIG. 2 shows an example of a conventional barcode arrangement, and FIG. 3 shows an example of a barcode arrangement according to the present invention. FIG. 4 is a control block diagram of the barcode reader of the present invention. Fig. 5 shows the barcode reader control flowchart 1.
FIG. 6 shows an example of a barcode arrangement, which is an embodiment of the Kinoe specification, and FIG. 7 shows a barcode reader control flowchart 1, which is another embodiment. 11... Barcode reader 12... Controller 13... Display 14...
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Claims (1)

[Claims] 1) A method for reading data consisting of a plurality of blocks, in which a plurality of types of control characters representing the start and stop of data are arranged at the beginning and end of each block, and the control characters are arranged in accordance with the order of the blocks. 1. A data reading method, characterized in that an error in the reading order of a data block group is detected by establishing a certain relationship according to the control character. 2) By placing control characters representing the start and stop of data at the beginning and end of each block, making each of them a start and stop character, and making the start character of the block match the stop character of the block before the block. 2. The data reading method according to claim 1, further comprising detecting an error in the reading order of data processing groups. 3) The control characters representing the start and stop of data are the same at the beginning and end of one block, and the same start and stop characters in the next order are placed in the next program of the block. A data reading method according to claim 1, characterized in that: 4) The data reading method according to claim 1, wherein the data consisting of a plurality of blocks consists of a pattern such as black and white, and the data is read by an optical reader that is manually scanned. 5) In a device that reads data consisting of a plurality of blocks, a plurality of control characters representing the start and stop of data are placed at the beginning and end of each block,
A data reading device characterized in that the control character afterter has a certain relationship according to the order of lines, and the control galactor detects an error in the reading order of data blocks. 6) The data reading device according to claim 5, wherein the data consisting of a plurality of blocks consists of a pattern such as black and white, and the data is read by an optical reader that is manually scanned. If the groups are read in the correct order, IF regular reading day 1 spray or sound ~
5. The nota reading device according to claim 5, which displays the error by a display or voice when the error is read. 8) Each block has a stamp, t&, indicating the order of each block.
A data reading device according to claim 5 of the patent, in which characters such as i'J' are printed and, if correctly read by a reader, the number of the block is displayed.