JPH0944589A - Bar code collection terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the bar code collection terminal device which can securely restore data having the same contents through easy operation even if the contents of a volatile memory are destroyed by some trouble. SOLUTION: This device is equipped with a RAM 11 which stores bar code data read by a bar code read means, a flash memory 12 which has a 1st storage area stored previously with a data recovery program and a 2nd storage area for storing the bar code data, a CPU 1 which stores the bar code data read by the bar code read means in the RAM 11 and also stores the data in the flash memory 12 as well, and a wired communication control part 9 which executes the data recovery program stored in the 1st storage area of the flash memory 12, when a recovery key 4 provided separately from ordinary input keys is operated, to output the bar code data stored in the 2nd storage area to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code collecting terminal device.

[0002]

2. Description of the Related Art Conventionally, there has been known a bar code collecting terminal device which optically reads a bar code printed on a product in a supermarket or the like and collects bar code data representing the price or type of the product. In such a bar code collecting terminal device, it is customary to store the bar code data read by the reading means in a volatile memory such as a RAM.

[0003]

However, in the above-mentioned conventional bar code collecting terminal device, since the bar code data is stored by using the volatile memory, the current is always kept in order to retain the contents of the memory. Had to keep running. Moreover, the contents of the memory may be destroyed by the impact when the device body is dropped by mistake.

Therefore, it is extremely difficult to recover the data when the power supply to the main body is cut off or the contents of the memory are destroyed. An object of the present invention is to ensure that even if the contents of the volatile memory are destroyed due to some kind of failure, the data of the same contents can be reliably recovered by a simple operation.

[0005]

The means of the present invention are as follows. The volatile memory stores the barcode data read by the barcode reading means. The non-volatile memory includes a first storage area in which a data recovery program is stored in advance and a second storage area for storing the barcode data.

The data duplication means stores the barcode data read by the barcode reading means in the volatile memory and also in the nonvolatile memory. The output unit executes the data recovery program stored in the first storage area of the non-volatile memory when a predetermined key provided separately from the normal input key is operated, and outputs the second storage. The bar code data stored in the area is output to the outside. The operation of the above-mentioned means of the present invention is as follows. The barcode data read by the reading means is stored in the volatile memory. At this time, the read barcode data has first and second storage areas, and data duplication is also performed in the second storage area of the non-volatile memory in which the data recovery program is stored in advance in the first storage area. Stored by means. And
When a predetermined key provided separately from the normal input key, that is, a recovery key is operated, the data recovery program stored in the first storage area of the nonvolatile memory is executed to execute the second recovery operation. The barcode data stored in the storage area is output to the outside, for example, to another barcode collecting terminal device.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a block diagram showing the configuration of a bar code collecting terminal device to which the present invention is applied. In FIG. 1, a CPU 1 that controls each part
Is a bar code reading unit 2 for reading a bar code printed on a product or the like, a key input unit 3 for issuing a predetermined instruction to the CPU 1 or inputting data, and contents of the RAM 11 due to some trouble. When destroyed, a recovery key 4 for instructing recovery of data having the same content, a RAM 11 as a volatile memory for storing the barcode data read by the barcode reading unit 2, and a flash as a nonvolatile memory A memory 12, a wireless transmission unit 6 for wirelessly transmitting data to the outside by the wireless communication control unit 5, an infrared transmission / reception unit 8 for transmitting / receiving infrared data by the infrared communication control unit 7, and a wired communication control unit. And a communication port 10 for wired data transmission / reception.

FIG. 2 is a diagram showing the configuration of the flash memory 12 described above. A main program area 121 for storing a main program for performing normal data processing and a data recovery program for executing data recovery processing. And a bar code data area 123 for storing bar code data.

The details of the barcode reading process will be described below with reference to the flowchart of FIG. First, the barcode printed on the product etc. is read by the barcode reading unit 2 (step S1), and the read barcode data is written in the RAM 11 (step S2). At the same time, the read bar code data is also written in the bar code data area 123 of the flash memory 12 (step S3). That is, the bar code data read by the bar code reading unit 2 is duplicated by the CPU 1 as a data duplicating means, and the data is RAM.
11 and the flash memory 12. Next, it is judged whether or not the reading is completed (step S4). If there is a bar code to be read, the process returns to step S1 and the bar code is read again. Then, when there are no more bar codes to be read, the bar code reading process ends.

The reset process will be described in detail below with reference to the flowchart of FIG. First, the processing when the power is turned on or the reset key is operated will be described. In this case, check if the power supply is normal,
The power supplied to the circuit of each part is turned on (step S
10, S11). Next, after the reset of the CPU 1 is released (step S12), the CPU jumps to the head address of the main program stored in the main program area 121 of the flash memory 12 and performs initialization processing (steps S13 and S14).

Next, in step S15, it is determined whether or not the recovery key 4 has been operated. In this case, the determination is NO and the process proceeds to step S17 to execute the main program.

Next, the processing when the recovery key 4 is operated to instruct the recovery of data will be described. In this case as well, steps S10 to S14 are executed as described above, but this time the determination in step S15 is YES and the process proceeds to step S16 and the data recovery program is executed.

FIG. 5 is a flow chart showing the processing contents of such a data recovery program. First, the barcode data stored in the flash memory 12 is read for each predetermined unit (step S20). Next, the read barcode data is output to the wired communication control unit 9.
Then, under the control of the wired communication control unit 9, the barcode data is transferred from the barcode collection terminal device 101 to another barcode collection terminal device 102 through the cable 100 from the communication port 10 as shown in FIG. (Step S
21). It is determined whether the data to be transmitted next is the end (step S22), and if not, the step S20.
Return to and read the barcode data again. Then, when there is no bar code data to be read, a communication end command is output to notify the other bar code collecting terminal device 102 of the end of communication (step S23).

Next, details of the data receiving process when the barcode data is received from another barcode collecting terminal device 102 will be described with reference to the flowchart of FIG. First, the wired communication control unit 9 of the barcode collection terminal device 101 is set to a data receivable state (step S30).
Next, from the other bar code collecting terminal device 102 to the cable 1
The barcode data is received via 00 (step S3
1) Write the received barcode data in the RAM 11 (step S32). Next, it is determined whether or not the received data is completed (step S33), and if there is data to be received, the process returns to step S31 and data reception is continued. Then, when there is no more data to be received, the data reception process ends.

According to the above-described embodiment, the read bar code data is automatically written into the flash memory 12 at the same timing as when the read bar code data is written into the RAM 11. Can be implemented. Further, data recovery can be easily and surely performed only by operating the recovery key 4.

In the above-described embodiment, the data 2
The duplication timing is fixed at the time of writing the barcode data, but as a modification, the data duplication timing may be controlled by the user. This makes it possible to control the timing of data duplication at the application level.

[0017]

According to the present invention, even if the contents of the volatile memory are destroyed due to some kind of failure, the data of the same contents can be reliably recovered by a simple operation.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a barcode collection terminal device to which the present invention is applied.

FIG. 2 is a diagram showing a configuration of a flash memory.

FIG. 3 is a flowchart for explaining details of a barcode reading process.

FIG. 4 is a flowchart for explaining details of reset processing.

FIG. 5 is a flowchart for explaining details of data recovery processing.

FIG. 6 is a flowchart for explaining details of data reception processing.

FIG. 7 is a diagram showing a connection state between the barcode collecting terminal device and another barcode collecting terminal device at the time of data recovery.

[Explanation of symbols]

1 ... CPU, 2 ... Bar code reading unit, 3 ... Key input unit, 4 ... Recovery key, 5 ... Wireless communication control unit, 6 ... Wireless transmission unit, 7 ... Infrared communication control unit, 8 ... Infrared transmission / reception unit,
9 ... Wired communication control unit, 10 ... Communication port, 11 ... RA
M, 12 ... Flash memory. 121 ... Main program area, 122 ... Data recovery program area, 12
3 ... Bar code data area.

Claims (1)

[Claims] 1. A volatile memory for storing the bar code data read by the bar code reading means, a first storage area in which a data recovery program is stored in advance, and a bar code data for storing the bar code data. A nonvolatile memory having a second storage area; a data duplication unit that stores the barcode data read by the barcode reading unit in the volatile memory and also in the nonvolatile memory; When a predetermined key provided separately from the input key is operated, the data recovery program stored in the first storage area of the nonvolatile memory is executed to
An output unit for outputting the barcode data stored in the storage area of the above to the outside, and a barcode collection terminal device.