JPS6316465A - Floppy disk device - Google Patents

Abstract

PURPOSE:To hold data stored in a memory means by writing the data to a floppy disk in response to an instruction given to an instructing means by a operator even before the data reach a prescribed quantity. CONSTITUTION:In case an electronic cash register (ECR) 2 has a trouble and the transfer of data is interrupted, the data less than 256 bytes are kept in a RAM4. In this case, an error message is displayed on a display device 9 to show that the transfer of data is interrupted. Thus an operator looks at said display and pushes a close switch 6. Then a CPU 12 writes the data stored in the RAM 4 to a floppy disk 5 by a head 15 and then writes the information showing the end of the data to the disk 5. Therefore those data transferred are all written to the disk 5 and therefore protected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a floppy disk device, and in particular, a method for recording data transmitted from a data processing device via a transmission line onto a floppy disk without processing instructions from the data processing device. The present invention relates to a floppy disk device that can perform

[Prior Art] Conventionally, transaction processing systems have been known that include a plurality of ECRs (electronic cash registers) and one floppy disk device.

In such conventional transaction processing systems, each EC
R's sales data is transmitted to a floppy disk device and stored on the floppy disk.

Here, the floppy disk device is provided with a control circuit including a data buffer, and each time a predetermined amount of data is stored in the data buffer, the data is written to the floppy disk. Furthermore, in response to an instruction to end data transmission from the data processing device, information indicating the end of the data is written on the floppy disk. After this writing process, the floppy disk can be removed or replaced.

[Problems to be solved by the invention] By the way, in the above-mentioned transaction processing system, the ECR
During data transmission from the floppy disk to the floppy disk, the ECR
If the floppy disk device fails, the data stored in the data buffer of the floppy disk device will not be written to the floppy disk until the ECR starts up again, resulting in a lack of data protection.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a floppy disk device capable of protecting data transmitted from a data processing device.

[Means for Solving the Problems] A floppy disk device of the present invention includes a storage means for temporarily storing data transmitted from a data processing device, and a floppy disk for storing data stored in the storage means. an instruction means for an operator to instruct what should be written; and each time a predetermined amount of data is stored in the storage means, the data stored in the storage means is written to a floppy disk, and according to the output of the instruction means; The apparatus further includes a write control means for controlling the data to be written to the floppy disk even if the data stored in the storage means does not reach a predetermined amount.

[Operation] In this invention, data transmitted from a data processing device is temporarily stored in a storage means, and each time a predetermined amount of data is stored in the storage means, the stored data is written to a floppy disk. At the same time, even if the data stored in the storage means does not reach a predetermined amount, the data is written to the floppy disk in response to an instruction given by the operator to the instruction means.

[Embodiment] FIG. 2 is a diagram showing a transaction processing system including a floppy disk device according to an embodiment of the present invention.

In FIG. 2, a plurality of ECRs 2 are connected to one floppy disk device 1. The floppy disk device 1 is a device for recording data, and uses a floppy disk having a diameter of, for example, 8 inches as a recording medium. The ECR 2 is used to register data related to products, such as product sales amount data and sales quantity data. The data registered in one of the ECRs 2 is transmitted to the floppy disk device 1 and stored therein.

FIG. 3 is a side view of the floppy disk device 1 shown in FIG. 2. In FIG. 3, a floppy disk device 1 is provided with a control board 3 to which a RAM 4 is attached, and a floppy disk 5 can be attached thereto. Further, the floppy disk device 1 is provided with a close switch 6. Here, the control board controls the operation of the floppy disk device 1. The RAM 4 as a storage means temporarily stores data transmitted from one of the ECRs 2 via the data transmission cable 7. A close switch 6 serving as an instruction means is used by the operator to instruct that the data stored in the RAM 4 should be written to the floppy disk 5.

FIG. 4 is an external front view of the floppy disk device 1 shown in FIG. 2. In FIG. 4, the above-mentioned close switch 6 is located on the front panel surface of the floppy disk device 1.
In addition, a floppy disk insertion section 8, an indicator 9, a ready indicator lamp 10, and a power switch 11 are provided.

The floppy disk insertion section 8 is for inserting, for example, an 8-inch floppy disk 5. The display 9 is used to display the details of errors occurring within the floppy disk device 1. Ready indicator lamp 10
indicates that data can be written to or read from the floppy disk 5 inserted into the floppy disk insertion section 8. The power switch 11 is for switching the power of the floppy disk device 1 on and off.

FIG. 1 is a schematic block diagram showing the electrical configuration of a floppy disk device according to an embodiment of the present invention. In FIG. 1, the control board 3 includes the above-mentioned RAM 4 as well as a CPU 1.
2 and a ROM 13 are provided. Further, the floppy disk device 1 is provided with an FDD (floppy disk drive) 14 and a head 15. The head 15 writes data to the floppy disk 5 and reads data from the floppy disk 5. FDD1
Reference numeral 4 controls the position of the head 15 and the rotation of the floppy disk 5. CP as a write control means
U12 operates based on a program stored in ROM13, and ECR2 temporarily stores the transmitted data in RAM4. Then, each time the data stored in the RAM 4 reaches, for example, 256 bytes, the stored data is written onto the floppy disk 5 by the head 15.

Then, in response to the ECR2 instructing the end of data transmission after all the data has been transmitted, the CPU1
2 writes information indicating the end of the data onto the floppy disk 5 following the data.

By the way, if a failure occurs in ECR2 during data transmission and the data transmission is interrupted, RAM4
Data within 256 bytes will remain stored in the . At this time, an error message is displayed on the display 9 to the effect that the data transmission from the ECR 2 has been interrupted.

The operator presses the close switch 6 after seeing this display.

Then, the CPU 12 writes the data stored in the RAM 4 onto the floppy disk 5 using the head 15, and then writes information indicating the end of the data onto the floppy disk 5.
write to.

As a result, all the transmitted data is written to the floppy disk 5, so the data is protected.

Further, when the operator wishes to replace the floppy disk during data transmission from the ECR 2, the close switch 6 is pressed. By suppressing the close switch 6, the data stored in the RAM 4 is written to the floppy disk 5, as well as data end information. Floppy disks can be replaced.

[Effects of the Invention] As described above, according to the present invention, data transmitted from a data processing device is temporarily stored in a storage means, and each time a predetermined amount of data is stored in the storage means,
In addition to writing the stored data to the floppy disk, even if the data stored in the storage device does not reach a predetermined amount in response to an instruction from the operator using the instruction device, the data can be written to the floppy disk. Since the data is written to the storage means, the data stored in the storage means is protected.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram showing the electrical configuration of a floppy disk device according to an embodiment of the present invention. FIG. 2 is a diagram showing a transaction processing system including a floppy disk device according to an embodiment of the present invention. FIG. 3 is a side view and an inside view of a floppy disk device according to an embodiment of the present invention. FIG. 4 is an external front view of a floppy disk device according to an embodiment of the present invention. In the figure, 1 is a floppy disk device, 2 is an ECR
, 3 is a control board, 4 is a RAM, 5 is a floppy disk, 6 is a close switch, 7 is a data transmission cable, 8
is the floppy disk insertion part, 12 is the CPU, 13 is R
OM, 14 is a floppy disk drive, and 15 is a head.

Claims (1)

[Scope of Claims] A floppy disk device connectable to a data processing device that performs data processing, comprising: storage means for temporarily storing data transmitted from the data processing device; an instruction means for an operator to instruct that the stored data should be written to a floppy disk, and each time a predetermined amount of data is stored in the storage means, the data stored in the storage means is written to the floppy disk. write control means for controlling the data to be written to the floppy disk even if the data stored in the storage means does not reach the predetermined amount according to the output of the instruction means; A floppy disk device with.