JPH0351808Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a data recording device, in which a magnetic recording medium, such as a floppy disk, on which data has been recorded but has not yet been processed, is used to record new data. The present invention relates to a magnetic recording device that prevents recorded data from being destroyed.

In floppy disk devices used in POS (Point Of Sales) devices, etc., data is continuously recorded on the disk, and the disk is removed when the disk capacity becomes full or when recording of the specified data is finished. When the time comes, a disk exchange operation is performed to replace the disk with a new one. The floppy disks on which data has been recorded in this manner are sent, for example, in multiples to a calculation center, where data processing such as issuing of bills is performed. In this case, it is possible to mistakenly insert a new disk on which data has already been recorded, and due to such an error, the recorded data will be destroyed without being processed by the calculation center. Sometimes.

Therefore, in the past, operators had to take great care to ensure that the recorded floppy disk was not reinserted into the floppy disk device before data processing, or, for example, had to physically modify the floppy disk to write data. It was protected.

However, with the above-mentioned conventional devices, the operator's attentiveness is limited, so sufficient effects cannot be achieved, and it is time-consuming and physically difficult to physically process the floppy disk to apply write protection. There was an inconvenience in that it was quite difficult to reuse a floppy disk that had been processed in a similar manner after data processing.

The present invention is a data recording device that uses a replaceable data recording medium, without requiring write protection by physically modifying the data recording medium, and requiring extremely careful attention from the operator. The purpose is to protect recorded data by preventing data from being re-recorded on a recorded but unprocessed data recording medium.

According to the present invention, there is provided a storage means for storing an identification code unique to the attached data recording medium, a detecting means for detecting that the data recording medium has been replaced, and an output from the storing means based on the output of the detecting means. The present invention is equipped with a comparison means for comparing the stored identification code and the identification code of the newly installed data recording medium, and an alarm means for issuing an alarm based on the comparison means determining a match.
An alarm is automatically triggered when an operator inserts a recorded but unprocessed data storage medium. Therefore, the operator knows that a recorded data recording medium has been inserted by mistake, and that it is necessary to replace the medium again before the data is rewritten. This allows you to easily protect your data.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows the system configuration of a floppy disk device according to an embodiment of the present invention. In the figure, 1 is a processor, 2 is a program section that is composed of ROM (read-only memory) and stores processing programs, and 3 is a memory that is provided with various work areas and flags and is composed of RAM (random access memory). 4 is a floppy disk mechanism, 5 is an operation section including a keyboard, etc., and 6 and 7 are a display section and a buzzer for generating an alarm, respectively.

FIG. 2 shows a schematic structure of a volume label provided at a predetermined position on a floppy disk, such as track 00, side 00, and sector 07. For example, the 5th to 10th digits contain an identification code unique to the disk. The volume ID is memorized.

Further, FIG. 3 shows various areas provided in the memory section, and shows an area KOSU for storing volume ID buffers 1 to N, that is, BUF1 to BUFN, and the number of volume ID buffers. Volume ID buffers 1 to N are considered first-in first-out memories,
Based on the number of buffers stored in the area KOSU, when writing data immediately after replacing a floppy disk, if the currently installed floppy disk is determined to be usable according to the processing procedure described below, the volume ID of the disk is set to volume. ID
Written to buffer 1 (BUF1). Therefore,
The volume ID buffers 1 to N can store the volume IDs of disks that have been replaced up to N times at most. This maximum storage number is determined by the contents of the area KOSU. That is, the area KOSU defines the number of buffers actually used even when the memory section physically has N volume ID buffers. Therefore, the maximum number set in this area KOSU is N.

FIG. 4 shows a processing procedure when a floppy disk is replaced in the floppy disk device having the above-described configuration. First, a sensor (not shown) detects that the door for inserting and ejecting the floppy disk in the floppy disk mechanism is opened and then closed, and the disk is replaced based on this. to decide. next,
Assuming that the number of buffers M is stored in the area KOSU, the volume ID buffers 1 to M
Compare and search the volume ID registered in and the volume ID of the newly inserted disk.
As a result of this search, if the volume ID of the newly inserted disk matches one of the volume IDs of volume ID buffers 1 to M, it is determined that the disk has recorded data and has not yet been processed.
The newly inserted disk is rendered unusable, and a display to that effect is displayed on the display, and an error alarm is issued by, for example, operating a buzzer. In contrast, the volume ID of the newly inserted disk is
Any volume ID from ID buffer 1 to M
If they do not match, the disk is regarded as a processed disk and is displayed as usable.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing the system configuration of a floppy disk device according to an embodiment of the present invention, FIG. 2 is a format diagram showing the configuration of a volume label provided on a floppy disk, and FIG. 1 is a format diagram showing each area of the memory section in the apparatus shown in FIG. 1, and FIG. 4 is a flowchart showing the processing procedure when replacing a disk in the apparatus shown in FIG. 1...Processor, 2...Program section, 3...
Memory section, 4... Floppy disk mechanism section, 5
...Operation unit, 6...Display section, 7...Buzzer,
BUF1, BUF2..., BUFN...Volume ID
Batsuhua, KOSU...Volume ID Batsufua number storage area.

Claims (1)

[Claims for Utility Model Registration] (1) Data recording means for performing data recording processing on a data recording medium from when the data recording medium is installed in the device until it is removed; and storage means for storing and sequentially accumulating an identification code unique to each data recording medium stored in each of the plurality of data recording media during each data recording process on each data recording medium; a detection means that outputs a detection signal to that effect when attached to the storage means; and upon receiving the detection signal from the detection means, the new information is added to the identification codes of the plurality of data recording media stored in the storage means; A determination means for determining whether or not there is an identification code that matches the identification code of the attached data recording medium, and an alarm means for outputting an alarm when the determination means determines that there is a match. A data recording device characterized by: (2) The data recording medium according to claim 1, wherein the data recording medium is a data-writable magnetic recording medium, and the storage means stores an identification code written therein. Device.