JPH10326402A - Floppy disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the capacity of a floppy disk while keeping the inter changeability with a conventional floppy disk. SOLUTION: By a control part 12, the position of a head in a floppy disk drive is detected from the rotating angle of a rotary shaft of a center hub 17, and an access is made to a corresponding bank of a semiconductor storage element 13 based on this position of the head, then the write-in of the information received from the head to the bank and the transmission of the information read out from the bank to the head are executed. At the time of transmitting and receivingoperation of the bank information to and from the head in the floppy disk drive, the conversion of the magnetic information from the head into the bank information and the conversion of the bank information transmitting to the head into the magnetic information are executed by this control part 12 through the planer magnetic head 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floppy disk in a computer, and more particularly, to a large-capacity floppy disk.

[0002]

2. Description of the Related Art Conventionally, in order to increase the storage capacity of this kind of floppy disk, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Publication No. 1084, this has been realized by using a magnetic storage medium such as a magnetic tape as a storage medium.

In this case, the floppy disk having an increased storage capacity needs to be read and written by a floppy disk drive corresponding to the storage medium.

[0004]

In the above-mentioned conventional floppy disk, when the capacity is increased by using a technique such as high density, it is necessary to adopt a format different from the conventional format. There is a disadvantage that compatibility with the conventional one is lost.

That is, in the existing floppy disk drive, if the large-capacity floppy disk remains in the large-capacity format, it cannot be read or written.

Further, since the current floppy disk employs a magnetic recording system for its storage medium, there is also a problem that it is vulnerable to magnetic destruction.

It is an object of the present invention to increase the capacity of a conventional floppy disk drive without changing the format even with a conventional floppy disk drive and to increase the magnetic breakdown strength.

[0008]

The first invention is characterized in that a semiconductor storage element is used as a storage medium of a conventional floppy disk while maintaining compatibility with a conventional floppy disk.

Next, a second invention has a plurality of semiconductor memory elements having the same capacity as a conventional floppy disk controlled by a bank system, and determines the position of a head in a floppy disk drive from the rotation angle of the rotation axis of a center hub. A control unit for detecting and accessing the bank based on the position of the head, writing information received from the head to the bank, and transmitting information read from the bank to the head. .

The third invention is characterized in that the bank in the second invention can be arbitrarily selected in advance.

According to a fourth aspect of the present invention, in the second aspect, the control section converts the magnetic information from the head into the bank information when transmitting and receiving the bank information to and from the head in the floppy disk drive. The conversion of the bank information to be transmitted to the head into magnetic information is performed via a flat plate-type magnetic head provided in advance.

According to a fifth aspect of the present invention, the flat-type magnetic head according to the fourth aspect recognizes a write request to the bank and a read request from the bank based on a magnetic state of the head of the floppy disk drive. The result is notified to the control unit.

[Operation] A user sets a bank in a semiconductor memory device using a bank changeover switch. Data is read from and written to the set bank through a flat-plate type magnetic head. At this time, the read / write position in the bank is determined by detecting the rotation angle of the center hub by the rotation angle sensor and calculating the control based on the result.

If the user switches the bank switch, new data can be read and written, and the storage capacity can be increased while maintaining compatibility with the conventional floppy disk.

Further, since a semiconductor memory element is used as a medium for storing data, magnetic breakdown of data is less likely to occur.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings.

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

The semiconductor memory element 13 is a semiconductor memory device composed of a plurality of banks. One internal bank is capable of recording the same amount of information as that recorded on a conventional floppy disk using magnetism. This semiconductor storage element 13
Is controlled by the control unit 12 for writing and reading.

The bank changeover switch 11 is used by the user to select which bank in the semiconductor memory element 13 is to be accessed, and the selected state can be read out by the control unit 12.

The flat type magnetic head 15 reads the magnetic state of the head of the floppy disk drive, and when a write operation to the present floppy disk is detected, the control unit 1
2, a function of reading the magnetic signal on the head of the floppy disk drive at that time, transferring the result to the control unit 12, and controlling the non-write operation if not a write operation. It has a function of transmitting data to the unit 12 and converting data sent from the control unit 12 into magnetic information and transmitting the magnetic information to the head of the floppy disk drive.

The rotation angle sensor 16 is connected to the center hub 1.
7 has a function of reading a change in the angle of rotation of 7 and transmitting it to the control unit 12.

Based on the angle change information, the control unit 12
The function of calculating what information the head of the floppy disk drive is accessing, and if the floppy disk drive is not performing a write operation, the currently accessed bank is selected from the selected bank of the semiconductor memory device 13. A function of reading information and transferring the data to the flat-plate type magnetic head 15;
The data from the flat magnetic head 15 is transferred to the semiconductor storage device 1
3 has a function of writing the data to the currently accessed location in the selected bank.

Next, the operation of the embodiment of the present invention will be described with reference to FIG.

The control section 12 reads the state of the bank switch 11. Then, the bank of the semiconductor memory element 13 is switched based on the read value.

The flat-plate type magnetic head 15 reads the magnetic state of the head of the floppy disk drive, and notifies the controller 12 that a write operation is being performed when the magnetic field for writing to the present floppy disk is generated.

When the control unit 12 performs a write operation,
A center hub 1 which reads a write magnetic data signal of the head of the floppy disk drive from the flat-plate type magnetic head 15 and transmits the read value from the rotation angle sensor 16
Based on the rotation angle change information 7, the information which the head of the floppy disk drive accesses is calculated. Based on the calculation result, the data is written to a target location in the currently selected bank.

When the floppy disk drive performs a reading operation to the present floppy disk, the flat magnetic head 15 reads the magnetic state of the head of the floppy disk drive without writing magnetic force. It informs the control unit 12 that it is not a write operation.

Based on this information, the control unit 12 determines which information the head of the floppy disk drive is accessing from the rotation angle change information of the center hub 17 transmitted from the rotation angle sensor 16 in the same manner as at the time of writing. The data is read from the access location from the selected bank based on the calculation result, and the data is transferred to the flat-plate type magnetic head 15. Flat magnetic head 15
Converts the data received from the control unit 12 into magnetic information and transmits the magnetic information to the head of the floppy disk drive.

[0029]

【Example】

[1] Description of Configuration Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is an external view showing the external appearance of the floppy disk of the present invention.

The flat type magnetic head 02 is normally protected by a magnetic head protection shutter 03. When the floppy disk is inserted into the floppy disk drive, the magnetic head protection shutter 03 slides to expose the flat-plate type magnetic head 02. The bank changeover switch 01 is set manually in advance.

The external size is the same as that of the current floppy disk.

[2] Description of Operation Next, an embodiment of the present invention will be described with reference to FIG.

The user first selects the bank change switch 01
Use to select the bank to use.

The control unit 12 (FIG. 1) reads the state of the bank changeover switch 01 and switches the bank of the semiconductor memory element 13 (FIG. 1) based on the value. In the case of a write operation, a write magnetic data signal of the head of the floppy disk drive is read from the flat-plate type magnetic head 02, and data is written to an access location in the selected bank of the semiconductor memory element 13 (FIG. 1). It is.

In the case of a read operation, the data at the access location is read from the selected bank, the data is transferred to the flat-plate type magnetic head 02, converted into magnetic information, and transmitted to the head of the floppy disk drive.

The access location in the bank is determined by the control unit 12
(FIG. 1) is calculated from rotation angle change information of the center hub 04 transmitted from the rotation angle sensor 16 (FIG. 1).

Further, by changing the bank switch 01, new data can be read and written.

[0039]

As described above, according to the present invention, since the capacity of a floppy disk is realized by dividing a semiconductor memory element into a plurality of parts in the form of a bank, compatibility with a conventional floppy disk is maintained. There is an effect that it is possible to increase the capacity while keeping it.

Further, since a semiconductor storage element is used as a data recording medium, there is an effect that the danger of destroying recorded information due to magnetism can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a floppy disk according to the present invention.

FIG. 2 is an external view showing the external appearance of a floppy disk of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 01 Bank changeover switch 02 Flat magnetic head 03 Magnetic head protection shutter 04 Center hub 11 Bank changeover switch 12 Control part 13 Semiconductor memory element 14 Display part 15 Flat magnetic head 16 Rotation angle sensor 17 Center hub 18 Bank 1 19 Bank 2 20 Bank n-1 21 Bank n

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Fig 11B 27/00 A

Claims (5)

[Claims] 1. A floppy disk, characterized in that a semiconductor memory element is used as a storage medium of a conventional floppy disk while maintaining compatibility with a conventional floppy disk, and an object of the present invention is to increase a recording capacity and increase a magnetic breakdown resistance. disk. 2. A plurality of semiconductor memory elements having the same capacity as that of a conventional floppy disk controlled by a bank method. The position of a head in a floppy disk drive is detected from the rotation angle of a rotation axis of a center hub. A floppy disk, comprising: a control unit that accesses the bank based on the information and writes the information received from the head to the bank and transmits the information read from the bank to the head. 3. The floppy disk according to claim 2, wherein the bank can be arbitrarily selected in advance. 4. The control unit converts the magnetic information from the head into the bank information and transmits the magnetic information from the bank information to the head when transmitting and receiving the bank information to and from the head in the floppy disk drive. 3. The floppy disk according to claim 2, wherein the conversion is performed via a flat-plate type magnetic head provided in advance. 5. The flat-plate type magnetic head recognizes a write request to the bank and a read request from the bank based on the magnetic state of the head of the floppy disk drive, and notifies the control unit of the result. The floppy disk according to claim 4, wherein: