JPH0135413B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a disk drive device (hereinafter referred to as a driver)
The present invention relates to a disk drive device which, when ejecting a jacket containing a disk, always keeps the rotational position of the disk constant relative to the jacket.

Conventionally, in this type of drive, to eject a disk, for example, a floppy disk, the rotation of the floppy disk is unconditionally stopped by operating an ejection key or an ejection lever attached to the driver, and the floppy disk is ejected. was being discharged.
For this reason, fingerprints, stains, scratches, etc. may adhere to the disk surface from the data window part of the floppy disk (a hole made in a part of the jacket, in which the disk is exposed).
When the central processing unit accesses the floppy disk, error information is generated, and floppy disks account for an extremely large proportion of errors.

Therefore, the present invention provides a method for eliminating such interference from the head window portion to the disk surface.
The position of the floppy disk jacket and the disk should always be kept constant, and the disk surface located in the head window should be placed in the area (gap between sectors) where there is no problem when the central processing unit reads and writes data on the floppy disk. According to the present invention, the occurrence of the above-mentioned error due to the disk is prevented in advance.

FIG. 1 is a sectional view and an electrical block diagram of a driver according to an embodiment of the present invention. Reference numeral 1 is a housing of the driver, and reference numeral 2 is a lid. By inserting a floppy disk and closing the lid 2, the driver can be accessed. Reference numeral 3 denotes a stopper for controlling the opening and closing of the lid 2. By releasing the stopper 3, the lid 2 opens around the shaft 2-1 and disk drive is stopped. 4 is collect. A spindle 5 is connected to a motor 6, and the collet 4 rotates the disk. 7 is a key for ejecting the floppy disk. 8 is a detection circuit that converts the press of the eject key 7 into an electrical signal, and the output signal KON becomes “1” level when the eject key 7 is pressed and becomes “0” when the floppy disk is ejected. “It becomes a level. 9 is
It is an LED. 10 is a phototransistor
In combination with LED 9, the index hole of the floppy disk (this is a hole provided at the radius r of the disk, and the radius of this hole 14-1 and the hole 15-1 of the jacket 15 are the same, so the index hole Hole 14-1 is hole 15- of jacket 15
When the light reaches point 1, the light reaches from 9 on the top of the jacket to 10 on the bottom. ) is a means of detecting
The output INX becomes "1" level only when an index hole is detected.

11 is an AND gate, which connects the KON and INX.
When both signals are at the "1" level, the output signal EJCT is at the "1" level.

12 is a motor and magnet control unit which stops the motor when the EJCT signal is at the "1" level and sets the output signal MAG to the "1" level.

Numeral 13 is a magnet, and when the MAG signal is "1", the magnet turns on, attracts the stopper 3, and opens the lid 2.

14 is a floppy disk, 14-1 is an index hole, 15 is a jacket for storing the floppy disk 14, and 15-1 is a hole in the jacket 15.

Next, the operation of the above configuration will be explained based on the flowchart shown in FIG. STEP 1 determines whether the floppy disk eject key 7 has been pressed, and then
2, the output signal KON of the ejection key detection circuit 8
becomes the “1” level. Next, in STEP 3, the position of the index hole is detected by the LED 9 and the phototransistor 10, and the output signal INX becomes "1" level during the index hole time. then
In STEP 4, the output EJCT of AND gate 11 is “1”
level, the process moves to STEP 5, where the motor and magnet control section 12 stops the disk drive motor 6, and further sets the MAG signal to the "1" level.
Turn on the magnet 13 and open the lid 2 via the stopper 3.

In STEP 6, each output signal KON and MAG are returned to the "0" level and the state is set to wait for insertion of a floppy disk.

As described above, by using the disk drive device according to the present invention, the positional relationship between the jacket of the ejected disk and the disk is always constant, so the disk surface located in the head window can be made into an unnecessary area for data processing. By doing so, it is possible to prevent errors that conventionally occur due to poor handling of disks.

Furthermore, if the desired position of the disk cannot be matched to the desired position of the jacket even if the index hole is detected and stopped immediately due to the influence of the inertia of each rotating member, the index hole is detected. After a predetermined period of time has elapsed, the EJECT signal is set to 1.
Of course, it may also be a level.

[Brief explanation of drawings]

FIG. 1 is a sectional view and electrical block diagram of a floppy disk drive device according to the present invention, and FIG. 2 is a diagram showing a control procedure. 1 is a housing, 2 is a lid, 3 is a stopper, 4 is a collect, 5 is a spindle, 6 is a floppy disk drive motor, 7 is an ejection key, 8 is an ejection key detection circuit, 9 is an LED, 10 is a phototransistor,
11 is an AND gate, 12 is a motor, a magnet,
Control circuit, 13...magnet, 14 is a floppy disk.

Claims (1)

[Claims] 1. A drive means for rotationally driving a disk housed in a jacket, a detection means for detecting the rotational position of the disk with respect to the jacket, an ejection means for ejecting the jacket, an ejection command means for instructing the ejection operation of the ejection means, and the ejection means. means for controlling the driving of the driving means when the detecting means detects a predetermined disk rotational position based on a command from the commanding means, stopping the disk at the predetermined rotational position and causing the ejecting means to eject the jacket; A disk drive device comprising: