JPH01319168A - Floppy disk device - Google Patents

Abstract

PURPOSE:To prevent a floppy disk device from being expensive by using a single head, which is provided to one floppy disk device, and magnetically executing the reading and writing of plural floppy disks without being exchanged. CONSTITUTION:For a floppy disk storing part 1, a drive name is detremined in advance in each floppy disk insertion. Then, when the instruction of electric or mechanical reading/writing and the drive name to execute the reading/writing are given from an external part to an interface circuit 6, a control circuit 7 selects the floppy disk. Further, a loading control circuit 10 gives an instruction to a floppy disk loading part 3 and a revolution control part 11 revolves a floppy disk revolving part 5. Then, a reading/writing head 4 executes reading/ writing operation by the instruction of a read circuit 8 or a write circuit 9. Thus, since one head is enough for reading/writing, the cost of the device can be decreased in comparison with the floppy disk device of the plural heads.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floppy disk device, and more particularly to a mechanism for reading and writing data from and to a plurality of floppy disks.

[Conventional technology]

Conventionally, this type of floppy disk device has a single magnetic head 4 as shown in FIG. 2, and this single magnetic head 4 corresponds to a single floppy disk 2. When using another floppy disk, the floppy disk is replaced.

[Problem to be solved by the invention]

Therefore, in the conventional floppy disk device described above, a single magnetic head can only read and write data on a single corresponding floppy disk, so it is difficult to read and write data on multiple floppy disks without human intervention. , it is necessary to have a plurality of magnetic heads, which has the disadvantage that the floppy disk device becomes expensive.

In contrast to the conventional floppy disk device described above, the present invention is an original floppy disk device that uses a single head provided in one floppy disk device to magnetically read and write multiple floppy disks without replacing them. It has a certain content.

[Means to solve the problem]

The floppy disk device of the present invention has a mechanism for storing a plurality of floppy disks, a means for selecting an arbitrary one from the plurality of floppy disks, and a single magnetic head for magnetically reading and writing. There is.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

In FIG. 1, one embodiment of the present invention includes a floppy disk storage section 1 that stores a plurality of floppy disks 2, a floppy disk loading section 3 that selects a floppy disk 2, and a floppy disk loading section 3 that stores data on the selected floppy disk. A read/write head 4 for reading and writing, a floppy disk rotating section 5 for rotating the floppy disk, an interface circuit 6 connected to an external device (not shown), a read circuit 8 and a write circuit connected to the read/write head 4. It has a circuit 9, a loading control circuit 10 that controls the floppy disk loading section 3, a rotation control circuit 11 that controls the floppy disk rotation section 5, and a control circuit 7 that controls each of these rotations. In the floppy disk storage section 1, drive names are predetermined as B, C, etc. each time a floppy disk is inserted, and the control circuit 7 electrically or mechanically instructs the interface circuit 6 to read and write. and the drive name for reading/writing is given, it corresponds to the specified drive name. It is inserted into the floppy disk insertion slot of the floppy disk storage section 1. Select floppy disk.

Further, the loading control circuit 10 instructs the floppy disk loading section 3 to move the floppy disk up and down in the floppy disk storage section 1 to bring the selected floppy disk to the same height as the floppy disk rotating section 5. Thereafter, the floppy disk is moved to the upper part of the floppy disk rotating section 5. Rotation control circuit 1
1 rotates the floppy disk rotating section 5, and the read/write head 4 performs read/write operations according to instructions from the read circuit 8 or the write circuit 9.

When a read/write instruction is given to another drive, if the previously selected floppy disk is currently mounted on the floppy disk rotating section 5, the floppy disk loading section 3 transfers the previously selected floppy disk to the previously selected floppy disk. The floppy disk is returned to the floppy disk storage section 1, instructions for reading and writing are given, and then the selected floppy disk is mounted on the rotating section 5, and the read/write head 4 performs reading and writing.

In another embodiment, a drive name is written in advance in a designated track and sector for each floppy disk (for example, in one sector of the O track), and when a read/write instruction and a drive name are specified, the floppy disk is stored. The floppy disk stored in the unit is brought to the floppy disk rotating unit, the drive name is read, and if it matches the specified drive name, a read/write operation is performed.

Other than this, since the drive name is determined for the floppy disk itself, it is possible to prevent mistakes such as accidentally inserting the floppy disk into the wrong floppy disk slot, and it is also possible to decide which drive to insert the floppy disk to be used. It has the advantage that it can be used freely without having to take this into consideration.

〔Effect of the invention〕

As explained above, the present invention eliminates the need to replace floppy disks when a single floppy disk device uses multiple floppy disks, and eliminates the possibility of scratches on the floppy disks caused by inserting and removing floppy disks. can be minimized.

In addition, each stored floppy disk can be associated with a drive name, so it can be used in the same way as multiple floppy disk devices, and only one read/write head is required. Another advantage is that it can reduce costs compared to multiple floppy disk devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a floppy disk device of the present invention. FIG. 2 is a block diagram showing a conventional floppy disk device. DESCRIPTION OF SYMBOLS 1... Floppy disk storage part, 2... Floppy disk, 3... Floppy disk loading part, 4... Read/write head, 5... Floppy disk rotating part 1.6... Interface circuit, 7・・・
・Control circuit, 8...Read circuit, 9...Write circuit, 10...Loading control circuit, 11...
・Rotation control circuit.

Claims (1)

[Claims] A mechanism for storing a floppy disk group consisting of a plurality of floppy disks, a selection means for selecting any one disk from the floppy disk group, and the selection means,
A floppy disk device characterized by having a single magnetic head for writing and reading data to and from a selected floppy disk.