JPH0528300A - Bar code scanner - Google Patents

Abstract

PURPOSE:To easily confirm the number of the references of the coincidence of read information in a barcode scanner ascertaining read information by confirming the plural times of the coincidence of read information read from a barcode. CONSTITUTION:The scanner is provided with the number of times storing means 8 previously and variably storing the number of the references, the number of times setting means 6 variably setting the number of the references set for the number of times storing means 8, and the number of times informing means 4, 6 informing the number of the references set by the number of times setting means 6 at the respective times of executing the reading operation of the bar code.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code scanner which confirms read information read from a bar code a plurality of times to confirm the read information.

[0002]

2. Description of the Related Art In some bar code scanners that optically read a bar code to obtain read information, it is necessary to confirm that the read information matches at least a preset number of times in order to prevent erroneous input. In such a bar code scanner, a bar code reading unit including a laser scanner and a light receiving element repeatedly optically reads a bar code to sequentially output a plurality of pieces of read information, and, for example, read information for a preset reference number. Is temporarily stored in the information storage means. Then, the read information for these reference numbers is compared to detect the presence or absence of a match, and when this match is detected, the read information is determined.

Alternatively, the first read information output by the bar code reading section is temporarily stored in the information storage means, and the read information stored is compared with the read information sequentially output by the bar code reading section. The presence or absence of the information is detected, and the read information is determined when the number of coincidence reaches a preset reference number. In such a bar code scanner, when the first and second read information do not match, both of these read information are temporarily stored in the information storage means and compared with the following read information to detect a match. The work is continued for the read information.

Further, in such a bar code scanner, for example, the number of coincidences of the read information is increased to improve the bar code reading accuracy, or the read information is matched to improve the bar code reading speed. Since it is sometimes desired to reduce the number of times, there is one provided with a number of times setting means for variably setting the reference number.

[0005]

In the above-mentioned bar code scanner, it is possible to prevent erroneous input by confirming the coincidence of the read information a plurality of times, and further to set the reference number of such information coincidence. By changing the number of times by the number-of-times setting means, it is possible to change the balance between the reading accuracy and the reading speed of the barcode scanner.

[0006] Here, such number of times setting means is realized by, for example, a dip switch or numerical information in a memory, but it is difficult for the user to easily check the reference number. There is a demand for the proposal of means for easily solving the above problem.

[0007]

A bar code reading section for optically reading a bar code repeatedly and sequentially outputting a plurality of pieces of read information is provided, and a number storage means for storing a predetermined reference number is provided, and a bar code reading section is provided. Is provided with coincidence detecting means for detecting the coincidence between the number of times of the same read information output by the user and the reference number stored in the number of times storing means, and the information confirming means for confirming the read information when the coincidence detecting means detects the coincidence. Is provided
The number of times setting means for variably setting the reference number set in the number-of-times storing means is provided, and the number of times the reference number set by the number setting means is notified each time the barcode reading operation is performed by the barcode reading unit. A notification means was provided.

[0008]

Since the reference number for confirming the agreement of the read information is notified each time the optical reading is performed, the user can easily confirm the reference number.

[0009]

Embodiments of the present invention will be described with reference to the drawings.
First, this bar code scanner 1 is called a stationary type or the like, and as illustrated in FIG. 2, a transparent window 3 and red and green colors are provided on the upper surface of a box-shaped main body housing 2 in appearance. LED (Light Emitting Diode) 4 and 5 are arranged side by side. The bar code scanner 1 is a CPU as a circuit, as illustrated in FIG.
(Central Processing Unit) 6, ROM (Read
Only Memory) 7, RAM (Rando
Decoder circuit 1 for m Acess Memory) 8 and light receiver 9
0, the drive circuit 11 for the LEDs 4 and 5, the drive circuit 13 and the control circuit 14 for the laser tube 12, and the drive circuit 16 and the control circuit 17 for the polygon motor 15 are connected.

Therefore, in this bar code scanner 1,
A polygon mirror directly connected to the polygon motor 15
(Not shown), the laser tube 12 and the light receiving portion 9
There is provided a bar code reading unit for repeatedly reading the bar code optically. Also, with this barcode scanner 1,
The circuit members 6 to 8 and the like realize a match detection unit that compares a plurality of pieces of read information and detects the presence or absence of a match, and an information determination unit that determines the read information when the match detection unit detects a match. There is. Further, in the bar code scanner 1, the number of times setting means for variably setting the reference number is provided by a DIP switch, a keyboard (not shown) or the like, and the reference number is notified each time the optical reading of the barcode is executed. The number-of-times notification means is provided by the members 4, 6 and the like.

As shown in FIG. 3, the RAM 8 is provided with a storage area 18 for bar code data as read information and a storage area 19 for setting data for a reference number.

In the bar code scanner 1 having such a structure, the reference number for confirming the matching of the read information is variably set by operating the dip switch or the keyboard. Every time the barcode reading operation is executed, the number of times the LED 4 emits light is notified.

More specifically, as shown in the flow chart of FIG. 4, the main body power source of this bar code scanner 1
When (not shown) is turned on, initialization is executed to confirm normal startup, and the setting state of the DIP switch is read and stored in the storage area 19 of the RAM 8 as a reference number. At this time, with this barcode scanner 1,
If desired, the reference number can be input by operating the keyboard, and the reference number thus input is overwritten on the storage area 19 of the RAM 8. So this R
The reference number T in the storage area 19 of the AM8 is loaded and registered, and when this is completed, the buzzer is sounded and the red LED 4 is turned on, and the storage area 18 of the RAM8 is cleared to wait for the barcode reading operation. Will be done.

When the above-mentioned initial setting is completed, the emitted light of the laser tube 12 of the bar code scanner 1 is reflected by the reflecting surface of the rotating polygon mirror, and the read light is repeatedly emitted from the light transmitting window 3. It will be in a state of being. Therefore, when a bar code (not shown) is positioned on the transparent window 3, the light information repeatedly reflected by the bar code is repeatedly read by the light receiving section 9 and photoelectrically converted. Then, each of these electric signals is diffracted by the decoder circuit 10 to become read information, and these read information are sequentially temporarily stored in the storage area 18 of the RAM 8. Therefore, when the number N of pieces of read information stored reaches the reference number T, these pieces of read information are compared by the match detection means and the presence or absence of a match is detected.

When this coincidence is detected, the buzzer is sounded, the red LED 4 is turned off, and the green LED 5 is controlled to drive and blinks T times which is a reference number. When a match of the read information is detected as described above, the information determining means determines the read information and outputs it to the information processing circuit described below.

By doing so, the reference number for confirming the matching of the read information is notified each time the optical reading is performed, by the number of blinks of the green LED 5 indicating the completion of the reading operation. It is possible to easily check, and it is possible to easily manage the setting state of the device and change the reference number.

In this bar code scanner 1, if the coincidence detecting means does not detect the coincidence of the read information, RA is used.
The storage area 18 of M8 is cleared and the optical reading of the bar code is again waited.

Further, in the bar code scanner 1 of the present embodiment, the reference number is notified by blinking the green LED 5 which is conventionally used for notifying the completion of the reading operation, but the present invention is described above. It is not limited to the structure, and it is also possible to notify the reference number by blinking a dedicated LED, an intermittent sound of a buzzer, or the like.
It can also be applied to a barcode scanner 21 or the like provided with a bicolor LED 20 of red and green.

[0019]

As described above, the present invention is provided with a bar code reading section for optically reading a bar code repeatedly and sequentially outputting a plurality of pieces of read information, and a number-of-times storing means for storing a predetermined reference number, A coincidence detecting unit is provided for detecting the coincidence between the number of times of the same read information output by the barcode reading unit and the reference number stored in the number-of-times storing unit. When the coincidence detecting unit detects a match, the read information is confirmed. And a number setting means for variably setting the reference number set in the number storage means. The reference number set by the number setting means is read by the bar code reading section. By providing the number-of-times notifying means for notifying each time of execution of the above, since the reference number for determining the coincidence of the optical reading is notified at every execution of the optical reading by the number-of-times notifying means, the user simply confirms the reference number. thing Can, those having the effect of such and change management and reference number of the setting state of the device can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view.

FIG. 3 is a structural diagram showing recorded information in a RAM.

FIG. 4 is a flowchart.

FIG. 5 is a perspective view showing a modified example.

[Explanation of symbols]

1, 21 Bar code scanner 4, 6, 20 Number of times informing means 6 Matching detecting means and information confirming means and number of times setting means 8 Number of times storing means 9, 12 Bar code reading section

Claims (1)

Claim: What is claimed is: 1. A bar code reading section for optically reading a bar code repeatedly to sequentially output a plurality of pieces of read information, a number storage means for storing a predetermined reference number, and the bar code reading section. Coincidence detecting means for detecting the coincidence between the number of times of the same read information output by the unit and the reference number stored in the number of times storing means, and information for fixing the read information when the coincidence detecting means detects a coincidence Establishing means, number-of-times setting means for variably setting the reference number set in the number-of-times storage means, and execution of a bar code reading operation by the bar-code reading section with the reference number set by the number-of-times setting means. A bar code scanner, comprising: a number-of-times informing means for informing each time.