JPS6346676A - Flexible disk driving device - Google Patents

Abstract

PURPOSE:To store management information without decreasing a recording area by providing a magnetic stripe recording area on a jacket storing a flexible disk and being equipped with a magnetic stripe control mechanism to read and write the data of the magnetic stripe recording area. CONSTITUTION:When a flexible disk 5 is inserted, a magnetic stripe 11 stuck onto a jacket is read by a magnetic stripe reading/writing control mechanism 10 and a reading signal MRD is outputted to an external interface by an MSR reading writing circuit 12. On the other hand, when the flexible disk 5 is removed, a writing permitting signal inputted from an external interface and a writing data signal MWRD are converted to the writing signal by an MSR reading/writing circuit 12, sent to the magnetic stripe reading writing/control mechanism 10 and the data are written by the magnetic stripe reading/writing control mechanism 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flexible disk drive, and more particularly to a flexible disk drive equipped with a magnetic stripe control structure.

[Conventional technology]

Flexible disk drives are widely used in personal computers and other applications.

Conventional flexible disk drives include, for example, rY
As shown in the "D-380 Holding Manual", it is comprised of a drive motor, head actuator, read/write head, head load actuator, flexible disk, read circuit, write and protection circuit, control circuit, etc. The disk is divided into, for example, 77 tracks from 00 to 76, and data is recorded on these 1-racks. However, 00 of these is used as an index track.

In addition, 74 and 75 are used as replacements for defective trucks, and 76
are used as spare tracks, so there are a total of 73 tracks 01 to 73 for data storage. In addition, in order to store flexible disk management information such as the number of accesses, the number of times of insertion/extraction, and the manufacturing number/manufacturer name, one of the data tracks of the flexible disk must be allocated as a management area. The area becomes smaller. Furthermore, this management information can no longer be easily read out.

[Problem that the invention seeks to solve]

As such, the recording area of a flexible disk is managed by the system's operating system, and other related information is the media manufacturer,
For the manufacturing date, model name, reliability information such as the number of buses, the number of times media is inserted and removed, file protection information, and a spare file management table, it was necessary to sacrifice a track with a recording area to create an area.

Additionally, flexible disks often become scratched due to wear and dust, making it impossible to read data.
There were problems with recording important information.

An object of the present invention is to solve such conventional problems, to provide a flexible disk drive device that can store management information without reducing the recording area, can widen the substantial recording area, and is highly reliable. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, a flexible disk drive device of the present invention provides a magnetic stripe recording area on a jacket that accommodates a flexible disk, and also includes a magnetic stripe control mechanism that reads and writes data in the magnetic stripe recording area. It is characterized by having

C Effect] In the present invention, the magnetic stripe, which has a recording density about 50 times lower than that of a flexible disk, has a magnetic layer about 10 times thicker, and is highly reliable, is attached to either the left or right edge of the flexible disk jacket. A control mechanism for reading/writing the data is provided in the flexible disk drive. For example, a Hi magnetic stripe is pasted on the jacket in the insertion/removal direction of a flexible disk, and when the flexible disk is inserted, the magnetic stripe read/write control unit reads the recorded data on the magnetic stripe, and when the flexible disk is removed, the recorded data is written. Take control. This input section also functions as a disk movement guide mechanism when inserting and removing a flexible disk. This makes it possible to read/write data on the magnetic stripe.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an internal configuration diagram of a flexible disk drive device showing one embodiment of the present invention. As shown in FIG. 1, the flexible disk drive device includes a magnetic head mechanism 1 for reading and writing from a flexible disk 5, a stepping mechanism 2 for moving the head left and right. A spindle motor 3 that rotates the flexible disk 5, and a head load actuator unique 4 that moves the magnetic head 1 up and down.
The main components are a mechanical section, and an electronic circuit section that controls these components, such as a read circuit 6, a write circuit 7, a control circuit 8, and a motor control circuit 9.

The flexible disk 5 is inserted into the flexible disk drive from outside to the inside and is stopped at the position shown in FIG. In this embodiment, when the flexible disk 5 is inserted, the magnetic stripe 11 pasted on the jacket is
Reading is performed by the write control mechanism 10, and the MSR
The read/write circuit 12 outputs a read signal MRD to an external interface.

On the other hand, when ejecting the flexible disk 5, the write permission signal MWR input from the external interface
G and write data signal MWRD to MSR read/
The write circuit iIg12 converts it into a write signal and sends it to the RA magnetic stripe read/write control mechanism 10, which causes the magnetic stripe read/write control mechanism 10 to write data. At this time, since the flexible disk 5 moves from the inside to the outside of the flexible disk drive, the magnetic stripe 11 moves in the opposite direction to that when it was inserted. Therefore, at the time of writing, the external interface control section is operated so that the write data is input with the bit string reversed when being read.

In this manner, in FIG. 1, information on the magnetic stripes provided on the jacket surface of the flexible disk 5 can be read and written during normal insertion and removal operations of the flexible disk 5.

FIG. 2 is a diagram showing recorded information on the magnetic stripe in FIG. 1. The information shown in FIG. 2 is written on the magnetic stripe in the same way as a general magnetic card. This information is information related to the management of magnetic stripe read/write data. On both the left and right ends of the recording width of the magnetic stripe, timing signals of approximately 5 mm width are written for information protection and timing of read/write operations.

In FIG. 2, an all-0 signal as a timing signal is followed by an 8-bit all-1 signal as a data start code within about 5 mm from the left side of the magnetic stripe.
After that, data from the first character to the 69th character in 8-bit units follows. This is followed by an 8-bit all-1 signal that is the end code of the data, then an error check code that is a horizontal parity check from the first character to the end code, and finally a timing signal approximately 5 mm from the right edge of the magnetic stripe. An all-O signal is placed.

When reading data from such a magnetic stripe, the external interface control unit detects 8 consecutive 1 bits, which are the start code, and then reads the subsequent data as 8 bits.
Each bit is read in sequence, and this operation continues until eight consecutive 1 bits, which are the termination code, are detected. When the end code is detected, the horizontal parity from the first character to the end code is calculated, and if the result is all 0, it is processed as normal. Moreover, if it is other than all O, it is processed as an error.

On the other hand, when writing data to a magnetic stripe, the magnetic stripe moves in the opposite direction to reading, so
Starting from the right side of the stripe, the timing signal, error check code, end code, 69th character, ... 1st character, start code, timing signal, and bit 8 (b8
) to bit 1 (bl).

Therefore, in the external interface section, the horizontal parity from the first character to the end code is calculated in advance before writing, and all write data is exchanged between upper and lower bits in units of 8 bits.

In this magnetic stripe area, in addition to the media manufacturer, manufacturing date, and model name, reliability information such as the number of passes, number of times media is inserted and removed, file protection information, file management information, etc. is written under the control of the system operating system. .

In this way, the target data can be written by preparing the write data in the external interface control section and sending it bit by bit to the magnetic stripe control section.

〔Effect of the invention〕

As explained above, since a new magnetic stripe storage section is provided on the flexible disk, management information such as the number of disk accesses, number of insertions and removals, serial number, etc. can be stored without reducing the recording area of the flexible disk.
The name of the manufacturer, etc. can be stored, and (b)
By using the magnetic stripe as an extension of the data area of a flexible disk, storage capacity can be increased; Since flexible disks can be read, there are advantages such as expanding the scope of use of flexible disks.

[Brief explanation of drawings]

FIG. 1 is an internal structural diagram of a flexible disk drive device showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram of information recorded in the magnetic stripe area in FIG. 1. 1: Head mechanism, 2 Varnish chipping control mechanism, 3 Varnish spindle motor, 4: Head load actuator, 5:
Flexible disk, 6: read circuit, 7: write circuit, 8: control circuit, 9: motor control circuit, 10: magnetic stripe read/write control mechanism, 11: magnetic stripe, 12: MSR read/write circuit.

Claims (1)

[Claims] 1. A flexible disk drive device, characterized in that a magnetic stripe recording area is provided on a jacket that accommodates a flexible disk, and a magnetic stripe control mechanism is provided for reading and writing data in the magnetic stripe recording area.